API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

De 93,498 opiniones, los clientes califican nuestro API Developers 4.9 de un total de 5 estrellas.
Contratar a API Developers

API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

De 93,498 opiniones, los clientes califican nuestro API Developers 4.9 de un total de 5 estrellas.
Contratar a API Developers

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    170 trabajos encontrados

    Buscamos un especialista técnico independiente y certificado en AuraQuantic (anteriormente AuraPortal) para colaborar de manera externa en el diseño, modelado, integración y automatización de nuestros flujos de procesos empresariales. Modalidad: 100% Remoto (Freelance / Contract) Tipo de Contrato: Por entregables Duración estimada: 3 meses Presupuesto/Tarifa: A convenir según experiencia Responsabilidades: Diseño, configuración y orquestación de los procesos en AuraQuantic, asegurando la correcta implementación de los flujos requeridos. Adicionalmente, será responsable del diseño, desarrollo y optimización de la base de datos SQL Server 2019, mediante procedimientos almacenados que garanticen integ...

    $4075 Average bid
    $4075 Oferta promedio
    40 ofertas

    Necesito desarrollar una aplicación web enfocada exclusivamente en la gestión de documentos y archivos. El objetivo es que yo (y el resto del equipo) podamos cargar, organizar y consultar todo nuestro material digital desde un único lugar, sin depender de servicios de terceros. Funcionamiento esperado La plataforma debe permitir: • Subir archivos de distintos formatos (PDF, Word, imágenes sueltas, comprimidos, etc.) mediante arrastrar-y-soltar o selector tradicional. • Guardar cada documento con metadatos básicos: título, descripción breve, etiquetas y fecha. • Buscar y filtrar por cualquiera de esos metadatos o por nombre de archivo. • Previsualizar los tipos más comunes directamente en el navegador. • Gesti...

    $20 / hr Average bid
    $20 / hr Oferta promedio
    130 ofertas

    Necesito una aplicación web que centralice el inventario de mi negocio y me permita operar desde cualquier navegador. El núcleo del proyecto es un módulo de gestión de stock capaz de: • Mostrar existencias en tiempo real y bloquearlas mientras se procesan movimientos. • Registrar automáticamente un historial completo de entradas y salidas, con fecha, usuario y referencia. • Generar alertas de reabastecimiento configurables (por cantidad o por rango de fechas) enviadas por e-mail y, si es viable, por notificación interna. Quiero controlar el acceso mediante un sistema de roles y permisos: administradores con control total, responsables de almacén con acceso limitado a movimientos y usuarios de sólo consulta. No he ...

    $20 / hr Average bid
    $20 / hr Oferta promedio
    119 ofertas

    # وثيقة تحليل مشروع منصة بيع المنتجات الرقمية ومتاجر الوكلاء (White Label SaaS) ## نبذة عن المشروع المشروع عبارة عن منصة SaaS متخصصة في بيع المنتجات الرقمية، مثل شحن الألعاب، بطاقات الهدايا، الاشتراكات الرقمية، والخدمات الإلكترونية. لا تقتصر المنصة على البيع المباشر فقط، بل تتيح لأي وكيل إنشاء متجر إلكتروني مستقل يعمل تحت المنصة (White Label Store)، بحيث يمتلك الوكيل متجرًا يحمل اسمه وشعاره وألوانه ودومينه الخاص، بينما تتم جميع عمليات الدفع، إدارة الطلبات، تنفيذ العمليات، وإدارة المزودين من خلال المنصة الرئيسية. الهدف هو إنشاء نظام مركزي قادر على إدارة آلاف المنتجات وآلاف الوكلاء وآلاف المتاجر من لوحة تحكم واحدة. --- # فكرة العمل يوجد في النظام أربعة أطراف رئيسية: 1. المنصة (Platform Owner) 2. المزودون (Suppliers) 3. الوكلاء (Agents) 4. العملاء النهائيون (Customers) --- # آلية ال...

    $931 Average bid
    $931 Oferta promedio
    99 ofertas

    FILTRO HUMANO OBLIGATORIO: Para confirmar que eres un desarrollador real y que has leído esto con atención, escribe la palabra "PINEAPPLE" en mayúsculas al principio de tu propuesta. Si no lo haces, serás descartado de inmediato por los filtros automáticos. Estoy buscando un desarrollador práctico con experiencia en la API de generación de imágenes de OpenAI (específicamente gpt-image-2) para corregir y optimizar un módulo crítico de mi SaaS llamado "Estudio IA" (dentro de la sección "Droppage"). El problema actual: Nuestro sistema genera bloques de imágenes para armar landing pages de 10 secciones consecutivas (Hero, Oferta, Antes/Después, Beneficios, Tabla Com...

    $158 Average bid
    $158 Oferta promedio
    55 ofertas

    Cuento con todo el flujo conversacional en portugués, los textos finales y ejemplos de cada mensaje que el bot debe responder. Necesito que, en un plazo máximo de 5 días, implementes ese recorrido dentro de GoHighLevel y lo dejes funcionando en el canal de WhatsApp. Detalles clave del encargo: • Personalización moderada: las respuestas seguirán la lógica que ya definí, sin ramificaciones extra. • Tono formal: todas las interacciones deben mantener un estilo profesional. • Idioma único: el bot hablará exclusivamente en portugués. Tu trabajo será: 1. Configurar el flujo completo en GoHighLevel, usando mis mensajes tal cual. 2. Integrar la API de WhatsApp para que envíe respuestas autom&...

    $7 / hr Average bid
    $7 / hr Oferta promedio
    50 ofertas

    # وثيقة تحليل مشروع منصة بيع المنتجات الرقمية ومتاجر الوكلاء (White Label SaaS) ## نبذة عن المشروع المشروع عبارة عن منصة SaaS متخصصة في بيع المنتجات الرقمية، مثل شحن الألعاب، بطاقات الهدايا، الاشتراكات الرقمية، والخدمات الإلكترونية. لا تقتصر المنصة على البيع المباشر فقط، بل تتيح لأي وكيل إنشاء متجر إلكتروني مستقل يعمل تحت المنصة (White Label Store)، بحيث يمتلك الوكيل متجرًا يحمل اسمه وشعاره وألوانه ودومينه الخاص، بينما تتم جميع عمليات الدفع، إدارة الطلبات، تنفيذ العمليات، وإدارة المزودين من خلال المنصة الرئيسية. الهدف هو إنشاء نظام مركزي قادر على إدارة آلاف المنتجات وآلاف الوكلاء وآلاف المتاجر من لوحة تحكم واحدة. --- # فكرة العمل يوجد في النظام أربعة أطراف رئيسية: 1. المنصة (Platform Owner) 2. المزودون (Suppliers) 3. الوكلاء (Agents) 4. العملاء النهائيون (Customers) --- # آلية ال...

    $989 Average bid
    $989 Oferta promedio
    86 ofertas

    Tôi muốn xây dựng một phần mềm mới và đặt yếu tố bảo mật lên hàng đầu. Phiên bản đầu tiên chỉ cần tập trung vào lõi chức năng và hệ thống phòng thủ an toàn để chứng minh khái niệm. Những gì tôi mong đợi: • Kiến trúc và mã nguồn rõ ràng, dễ bảo trì. • Cơ chế bảo mật cao: xác thực, phân quyền, mã hóa dữ liệu nhạy cảm. • Tài liệu thiết lập môi trường, hướng dẫn triển khai và tài liệu kỹ thuật mô tả các lớp bảo mật đã tích hợp. • Gói kiểm thử đơn giản (unit test hoặc script kiểm tra lỗ hổng phổ biến) để tôi tự chạy và x&aacut...

    $2 - $8 / hr
    $2 - $8 / hr
    0 ofertas
    AI Legal Platform
    6 días left

    I’m building an AI-powered legal platform whose core purpose is document review and analysis. The system must ingest contracts and other legal papers, understand their structure, then surface the clauses, obligations, dates, and potential red-flags in a way that saves hours of manual reading.

    $27 / hr Average bid
    $27 / hr Oferta promedio
    91 ofertas

    I want the official WhatsApp Business API fully configured so my team can offer real-time customer support from a standalone application. The goal is clear: customers should be able to message us on WhatsApp and instantly receive an automated greeting, be routed to a live agent when needed, and have every conversation stored for easy tracking and follow-up. Key elements • Automated responses that fire immediately after a message is received (welcome, office hours, basic FAQs). • Live chat hand-off so agents can jump into the same thread without losing context. • Conversation and customer-query tracking, including tags or status flags we can export for reporting. Because I am not connecting this to an existing CRM or e-commerce platform, the project must include a l...

    $74 Average bid
    $74 Oferta promedio
    36 ofertas

    I’m building a complete e-commerce presence that includes both a public-facing website and a companion web application. The goal is a fast, secure and fully responsive experience that works flawlessly across modern browsers and devices, scales easily as traffic grows, and integrates smoothly with payment gateways, inventory services and any other APIs we decide to plug in later. Here’s what I need from you: • Design and develop the front end with clean HTML, CSS and JavaScript, leveraging a modern framework—React, Angular or Vue.js are all on the table, so feel free to pick the one that best fits the architecture you outline. • Build out a solid back end, set up the database layer, and wire up the required API endpoints. • Optimise for performance (Co...

    $443 Average bid
    $443 Oferta promedio
    99 ofertas

    Title: Established Indian Web Development Company Required for Long-Term PHP Partnership We are an established German web and digital production company looking for a professional and experienced web development company based in India for a long-term partnership. We already work with a team of five people, but due to our growing workload and increasingly complex projects, we need additional development capacity. We are not looking for an individual freelancer or a small team of a few developers. We are specifically looking for a larger, well-organised company with sufficient senior-level expertise, internal project management and the capacity to provide continuity. The work will include: • Developing complete websites and web applications • Maintaining, improving and extendin...

    $137 Average bid
    $137 Oferta promedio
    90 ofertas

    DESENVOLVIMENTO DE PLATAFORMA AGRITECH - MARKETPLACE DE PRODUTOS FRESCOS SOBRE O PROJETO: Estamos desenvolvendo uma plataforma inovadora de escoamento rápido de frutas e legumes frescos das províncias para a capital (Angola/Luanda). O modelo opera com pré-venda e distribuição imediata (cross-docking), conectando grossistas/fretistas a consumidores finais e pequenos negócios. O QUE PRECISAMOS: 1. APLICAÇÃO MÓVEL PARA CLIENTES (iOS/Android) Cadastro e autenticação de usuários Catálogo de produtos com fotos em tempo real Sistema de pré-venda com data de entrega prevista Carrinho de compras e checkout Múltiplas formas de pagamento (referência Multicaixa, transferência, pagamento...

    $252 Average bid
    $252 Oferta promedio
    31 ofertas

    Audio Streaming Platform Development (Web, Android, iOS & Admin Panel) We are looking for an experienced development team to build a modern audio streaming platform for Web, Android, and iOS, along with a comprehensive Admin Panel as detailed in the attached PDF. The application should provide a premium user experience for discovering, streaming, and managing audio content while following an original UI/UX design and branding. The product must not copy or reproduce any third-party application's proprietary design, assets, or intellectual property. User App Features User registration & secure authentication Audio streaming with adaptive quality Search, categories, and personalized recommendations User subscriptions for premium content Offline downloads with subscription/lice...

    $612 Average bid
    $612 Oferta promedio
    22 ofertas

    I’m building a new e-commerce website and the first milestone is a smooth, reliable shopping-cart experience. I need a full-stack developer who can take the project from a blank repo to a live site: setting up the front end, wiring it to a secure back end, connecting the cart logic, and deploying everything on a hosting platform of your choice. For this initial phase the only feature in scope is the cart itself—product listings, add-to-cart, update quantities, remove items, and a persistent cart across sessions. Payment gateway integration and user accounts will come in a later sprint, so keep the architecture flexible enough to bolt those on without rewrites. Deliverable: • A responsive e-commerce site with functional shopping cart, pushed to a Git repository and deploy...

    $419 Average bid
    $419 Oferta promedio
    157 ofertas
    Custom E-commerce Payment Gateway
    6 días left
    Verificado

    I need a seasoned developer to build a payment gateway entirely from scratch something like . The core engine must process real-time sales, captures, refunds, and voids while meeting strict PCI-DSS requirements and passing 3-D Secure 2.0 checks. Connections to be established: Cybersource, Mastercard Payment Gateway Services, and several domestic bank APIs (full specs will be shared after NDA). All routing, tokenisation, and risk responses should be abstracted behind a clean REST/JSON interface so the storefront can call a single, unified endpoint regardless of the underlying acquirer. Multi-currency support is essential; settlements will initially run in USD, EUR, and AED, with room to add more. Please architect currency tables, FX mark-ups, and reconciliation reports accordingly. ...

    $133 Average bid
    $133 Oferta promedio
    107 ofertas

    # Development of a WooCommerce Plugin with Multi Store Shopify Integration, Secure Routing, and Correct Order Tracking ## Project Description I am looking for a developer experienced in WordPress, WooCommerce, PHP, JavaScript, Shopify Admin API, webhooks, and web application architecture to rebuild from scratch an integration system between a main WooCommerce store and multiple Shopify stores. The current system already has a functional flow, but it presents serious security, tracking, data integrity, and product identification failures in the orders. For this reason, I am not looking only for specific fixes. The objective is to develop a new solution that is documented, secure, testable, and ready for production. The system must camouflage the traffic origin because Shopify must not h...

    $489 Average bid
    $489 Oferta promedio
    149 ofertas

    The task is to create a complete, server-based file-sharing application from scratch. I want a standalone file server that handles uploads, downloads, permission management, and performance optimisation in a single, well-architected solution. Scope • Design the overall architecture (front-end, back-end, storage layer). • Develop the core file-handling APIs and the web interface. • Implement granular user and group permissions. • Optimise transfer speed, concurrency handling, and storage efficiency. • Containerise and script deployment so the server spins up smoothly on a fresh Linux instance. • Provide concise documentation covering build steps, configuration, and maintenance. Tech stack is flexible: Node.js with Express, or Python with FastAPI, ...

    $76 Average bid
    $76 Oferta promedio
    30 ofertas

    I'm looking for an experienced developer to create a secure login system using Angular, Spring Boot, Spring Security, and MySQL. Key Requirements: - Login with email and WhatsApp OTP - Admin and user role management Ideal Skills and Experience: - Proficiency in Angular, Spring Boot, Spring Security, MySQL - Experience with OTP integration and role-based access control - Strong background in secure application development Please provide relevant work samples and a breakdown of your approach.

    $24 Average bid
    $24 Oferta promedio
    18 ofertas
    Deploy Node.js App to Firebase
    6 días left
    Verificado

    I have a fully written internal work-product web application whose backend is pure JavaScript running on Node.js. The code is ready but still lives only on my local machine. I now need it: • Checked into Google Antigravity with a clean commit history • Deployed to Firebase Hosting (or a comparable platform if you can explain the advantage) • Wired so every existing route, API call and environment variable behaves exactly as it does locally • Documented with a short, step-by-step read-me so I can repeat the deployment myself later Acceptance criteria 1. The site loads over HTTPS from the chosen host. 2. All current internal workflows operate without new errors. 3. Source appears in Google Antigravity, properly structured. Front-end was “vibe coded&rd...

    $29 Average bid
    $29 Oferta promedio
    139 ofertas

    Antigravity is already installed and my Ollama daemon is serving four-five local LLMs flawlessly. Antigravity’s agents talk to those models entirely offline. We will hop on AnyDesk or Zoom—my preferred interface for this job—and you’ll: • Point Antigravity to the localhost endpoints exposed by Ollama • Verify bidirectional communication with at least one sample prompt/response per model • Leave me with the edited config files or environment variables and a quick note of the steps taken No other integrations are required—just Antigravity ↔ Ollama. Once we can pull responses from the local models without touching the cloud, the task is complete.

    $68 Average bid
    $68 Oferta promedio
    9 ofertas

    I have a working proof-of-concept at that already accepts messages and returns AI-generated answers. Now I want to tighten the scope so that the bot focuses exclusively on customer support questions and delivers fixed, brand-approved replies rather than free-form text. Here’s what I need from you: • Wire the existing interface to a response engine that looks up and serves a predefined answer for every recognised query. • Keep fallback logic minimal: if an incoming message is outside the catalogue, simply surface a polite “let me transfer you” hand-off flag (no live routing required right now). • I will supply the complete list of Q&A pairs as soon as the project starts; structure it in whatever format is most convenient for you (CSV, JSON or a li...

    $76 Average bid
    $76 Oferta promedio
    40 ofertas
    Reddit & News Reply MVP
    6 días left
    Verificado

    I need a lean MVP that automatically hunts for conversations where my web app can be mentioned in a helpful, brand-building way. The workflow is straightforward: 1. Crawler • Scan Reddit plus Google News (blogs and articles surfaced). • Harvest threads and comments. 2. AI Scoring • Rank each conversation primarily on its relevance to the app and the overall popularity of the post or thread. • Ignore low-signal chatter; keep only high-potential mentions. 3. Drafting Replies • Use an LLM to generate a concise, promotional reply that feels organic and value-adding, not spammy. 4. Dashboard Review • Queue the top-scoring replies in a simple web dashboard. • I must be able to edit any draft before it goes live and q...

    $449 Average bid
    $449 Oferta promedio
    231 ofertas

    Project Name: I am looking for an experienced Full Stack Developer to build Phase 1 (MVP) of , an enterprise-grade e-commerce platform. The project includes: • Customer Website • Admin Panel • Shopkeeper Panel • Salesman Panel • Product Management • Category Management • Brand Management • Inventory Management • User Registration & Login • Order Management • Responsive Design • React Frontend • Node.js Backend • PostgreSQL Database • REST API • Role-Based Access Control • Live Chat Support • User Reviews & Ratings • Multi-Language Support • Razorpay / PhonePe / Cashfree Payment Gateway Integration • Shipping Service Integration The code must be clean, secure, scalable, well...

    $522 Average bid
    $522 Oferta promedio
    75 ofertas

    I need a single, scalable platform that can provision a complete white-label solution for every retailer I onboard. When a new store registers, the system must automatically create: • A customer-facing Android and iOS app published under that store’s own name, logo and colour palette • A private customer database that is fully isolated from other tenants • A browser-based admin panel where the store’s staff can handle inventory, billing & invoicing, CRM tasks, offers with push notifications, and real-time sales reports Behind the scenes everything runs on a true multi-tenant architecture, yet from the retailer’s point of view it feels like a stand-alone system. Performance, security and the ability to scale to thousands of tenants are non-negotiab...

    $259 Average bid
    $259 Oferta promedio
    45 ofertas

    I am building an online hub to manage and showcase mixed-use properties. The platform must let visitors: • run fast, filterable property searches • open rich property-detail pages with photo galleries and floor plans • review up-to-date agent profiles, including contact widgets • step through high-quality virtual tours that play smoothly on desktop and mobile A secure backend for uploading listings, photos, 360° media and agent information is also required so my team can keep content current without touching code. Deliverable: a fully deployed, responsive web application (or tightly integrated CMS) that covers the four features above, performs well on modern browsers, and is ready for real-world data. Source code, basic documentation and a brief walkthrough...

    $10 / hr Average bid
    $10 / hr Oferta promedio
    56 ofertas

    Senior AI Engineer / Full-Stack Developer Required – AI SaaS Platform We are seeking an experienced AI engineer or full-stack developer to design and build a scalable, enterprise-grade SaaS platform that combines AI automation, CRM, communication tools, and business workflow management. This is a long-term retained engagement rather than a one-off development project. We are looking for a technical partner who can help architect the platform, recommend the most suitable technology stack, and continue developing and enhancing the product over time. Core Requirements The platform will include AI-powered features such as: * AI sales and workflow automation * CRM and customer management * AI-generated emails and follow-up sequences * Call transcription, summaries and task generation...

    $86 Average bid
    $86 Oferta promedio
    114 ofertas

    I have a live application whose core runs on PHP while several service layers are written in Node.js. Everything works—until the JSON we pass between layers silently shifts and breaks the backend. Right now I only need bug fixes; no new features or tuning, just rock-solid stability. Here’s what I’m dealing with: • backend endpoints intermittently return malformed or incomplete JSON • downstream PHP code then throws errors or stops responding altogether Your job is to trace where the JSON structure changes, correct the offending Node or PHP handlers, and make sure the same schema is respected throughout every call. Once the patch is in place I’ll want the updated code committed to Git and a brief note of what was changed so I can follow along. Aut...

    $66 Average bid
    $66 Oferta promedio
    72 ofertas
    AI Agent Infrastructure Build
    6 días left
    Verificado

    I’m rolling out a full-funnel campaign that will be driven almost entirely by autonomous AI. To make that possible, I need a partner who can both execute the campaign itself and architect the underlying agentic infrastructure that powers it. Here’s the scope in plain terms: • Build, configure, and orchestrate a network of Super Agents and Specialized Agents that can collaborate seamlessly. • Design the toolkit they rely on—prompt libraries, action chains, API connectors, memory stores, and monitoring dashboards. • Stand up the infrastructure (think LangChain, AutoGPT-style frameworks, vector databases, robust communication layers) so that new agents can be spun up, managed, and retired with minimal friction. • Once the framework is live, run th...

    $484 Average bid
    $484 Oferta promedio
    164 ofertas

    I already have a partially-built web app running on React for the front end, for the API layer, and Firebase for authentication, data, and hosting. The skeleton is there, but many screens are still placeholders and several workflows are unfinished. I’m looking for a developer who can take this codebase, finish every remaining module, tighten the architecture, and deliver a production-ready release. Here’s the kind of help I need: • Audit the current repository, then map out what’s missing. • Finish all remaining UI screens and the matching Express endpoints. • Connect each screen to Firebase services—Auth, Firestore, Storage, Cloud Functions, and if useful, Messaging for real-time updates. • Set up clean error handling, secure Firestore...

    $538 Average bid
    $538 Oferta promedio
    103 ofertas

    Title: SurveyJS Form, Configurable Rules Engine & Compliance Dashboard – Pilot Project v2 *** Please completely read the description as it has been updated Project Description I’m looking for an experienced developer to help digitize and automate a complex compliance/reporting form based on reporting guidance. The goal is to replace manually reviewed forms and manual Excel summaries with a SurveyJS‑based solution, a configurable rules engine, and a reporting/dashboard layer. The work will start with a small paid pilot task so you can demonstrate your ability before we expand to the full project. What I need The final solution should: - Build the full questionnaire in SurveyJS (JSON) based on an existing annotated PDF form and instructions. - Implement completeness and ...

    $128 Average bid
    $128 Oferta promedio
    148 ofertas

    We are looking for an experienced developer to build a functional prototype of an automated quotation system for a moving service business. The goal is to evaluate the developer’s technical ability, design quality, and understanding of the workflow before proceeding with the full-scale system development. The technology stack is flexible. We are open to using whichever programming language or framework is most suitable for the developer, as the main focus is the final user experience, design quality, and functionality. This initial project represents only a small portion of the complete future system. If the prototype meets expectations, there will be opportunities for continued development and expansion. Prototype Features Required: Step 1: Customer Contact Form Create a custom...

    $469 Average bid
    $469 Oferta promedio
    147 ofertas
    Intégration API Stock Site
    5 días left
    Verificado

    Je souhaite connecter sur mon site l’API privée de mon client afin que mes visiteurs voient, en temps réel, les niveaux de stock disponibles pour chaque produit. Voici le cadre : • Type d’API : service de données tierces, fourni directement par mon client. • Objectif : afficher clairement les informations de stock aux clients (quantité restante, indisponibilité, délais de réapprovisionnement). Ce dont j’ai besoin : 1. Installer la clé et les identifiants d’accès sécurisés sur mon hébergement. 2. Développer les appels API (GET principalement) et gérer les réponses JSON ou XML. 3. Mettre en cache intelligent pour éviter de dép...

    $178 Average bid
    $178 Oferta promedio
    107 ofertas

    I need a seamless, real-time bridge between our Shopify storefront and our in-house ERP, ACME. Whenever new inventory lands in the warehouse, a sale reduces available quantity, or a manual adjustment/return is logged in ACME, the exact stock level must instantly reflect on every Shopify product page without delay. Your job is to design, build, and deploy this two-way integration. My team can expose or consume REST/GraphQL endpoints on the ACME side, and I can generate API credentials in Shopify. Webhooks, polling safeguards, or a lightweight middleware layer are all acceptable—as long as every trigger above updates Shopify in real time and survives high-volume traffic. Deliverables • Production-ready integration code (language/tool of your choice) • Deployment or setu...

    $277 Average bid
    $277 Oferta promedio
    71 ofertas

    I already have a Windows-based .exe that simply wraps a Spring Boot jar; that jar contains virtually all of the middleware logic connecting my local system with an external service. What I need now is a developer who can transform that single-file setup into a fully-fledged, scalable server running in the cloud. Point to me note - i want that spring boot server working as it is same no chnages only chances main sevrer inside it and make sure jar works with that server same to same as they work with orignal ones You’ll receive: • the original Spring Boot jar (inside the exe) • my full assistance and domain knowledge whenever you need it Scope 1. Unpack or otherwise extract the jar so the project can be built, tested and version-controlled normally. 2. Refactor or re...

    $84 Average bid
    $84 Oferta promedio
    21 ofertas

    Founding Engineering Team Needed for Production-Grade Food Delivery Platform Project Overview I'm looking to assemble a small, highly skilled engineering team to build a production-ready food delivery platform from the ground up. This is a long-term project, not a simple prototype. The goal is to create a scalable application that can grow into a commercial product. Important: The technology stack has not been finalized yet. One of the first phases of the project will be collaborating on architecture and selecting the most suitable technologies based on scalability, maintainability, performance, and long-term goals. I'm looking for professionals who can contribute to both implementation and technical decision-making. Roles Required Mobile Application Developer(s) Responsi...

    $1131 Average bid
    $1131 Oferta promedio
    135 ofertas

    **Project Title:** Betting Platform Development (Similar to Word777) **Project Description:** I am looking for an experienced full-stack developer or development team to build a betting platform similar in functionality and user experience to an existing betting website (reference will be shared privately). **Project Requirements:** * Modern, responsive UI for desktop and mobile. * Secure user registration and login system. * User wallet with deposit and withdrawal management. * Betting functionality with real-time odds and live updates. * Admin panel to manage users, transactions, betting markets, and reports. * User dashboard with betting history, transaction history, and account management. * Secure payment gateway integration (as per supported regions). * Notifications and activity...

    $272 / hr Average bid
    $272 / hr Oferta promedio
    18 ofertas

    I already have an AWS Health Imaging (AHI) datastore up and populated with DICOM studies. What’s missing is a clean, browser-based way to view those images. I want an OHIF viewer instance—hosted in my AWS account—that pulls directly from AHI and streams the images with no loss of performance or security. Key objectives • Deploy or configure OHIF (latest stable) inside AWS—an S3 + CloudFront static site or an EC2/Docker setup is fine as long as it scales and stays cost-effective. • Wire the viewer to AHI using the official APIs so that studies, series, and instances load seamlessly. No intermediary PACS; the images must come straight from the AHI datastore. • Handle IAM roles, tokens, and signed URL logic so access remains private yet friction-f...

    $28 Average bid
    $28 Oferta promedio
    22 ofertas

    Senior Kong API Gateway / AI Platform Security Architect (Contract) Overview: Seeking a hands-on Senior Kong API Gateway and Cloud Security Architect to help evaluate, design, and implement secure gateway solutions supporting both enterprise APIs and emerging AI/LLM platforms. This role partners with platform, cloud, and security teams to embed governance, security controls, and architectural best practices into modern gateway deployments. Strong API gateway experience is the priority; AI experience is a plus. Responsibilities: * Design and implement enterprise API and AI gateway architectures. * Collaborate with platform, cloud, and security teams to define secure, scalable solutions. * Establish security guardrails, governance, and architectural standards. * Provide guidance for AI/LLM...

    $10 / hr Average bid
    $10 / hr Oferta promedio
    73 ofertas
    Kirana App & Web Suite
    5 días left
    Verificado

    I want to take my neighbourhood kirana store fully digital with a two-part solution: a customer-facing Android app and a browser-based back office, both controlled through tiered roles (admin and super-admin). Android app Customers must be able to browse the entire catalogue through a fast product listing and search module, place and manage their orders inside the app, then leave customer reviews once an order is delivered. The flow should feel as smooth as any modern e-commerce experience. Web application Internally, the web portal will let us update stock in real time, handle individual customer accounts with their complete order history, and review sales analytics to spot trends and slow-moving items. Admin & super-admin roles Store admins need dashboards for user managemen...

    $330 Average bid
    $330 Oferta promedio
    117 ofertas
    Claude Workflow Automation Setup
    5 días left
    Verificado

    I need Claude configured for a business-grade workflow automation stack. The goal is to let the model take over three routine areas: • Scheduling & reminders – Claude should watch a shared Google Workspace calendar, propose meeting times, and nudge attendees by email or Slack when action is needed. • Data entry & reporting – incoming form submissions and CSV uploads must be parsed, cleaned, and pushed into our PostgreSQL database, with weekly summary reports drafted in Google Docs. • Email & communication processes – routine enquiries should trigger Claude to draft context-aware replies, tag conversations in our CRM, and escalate anything outside predefined rules. I already have API access to Anthropic, Google Workspace, Zapier and our...

    $20 / hr Average bid
    $20 / hr Oferta promedio
    167 ofertas

    I have my website like blinkit but problem is when customer open website customer location should auto dictate without google map api and need to build deliver app also like blinkit. My website is :-

    $116 Average bid
    $116 Oferta promedio
    32 ofertas

    I have a fully-working Android application that currently runs only in offline mode. I now need it moved online so users can access live data through a dedicated server. No new features or UI changes are required—the goal is a straight deployment that preserves all existing functionality. You will handle everything from configuring the server environment, setting up any required APIs or databases, to packaging and releasing an online-ready APK. Once complete, the app should connect seamlessly to the server, sync data in real time, and perform exactly as it does offline. Please outline the approach you would take, the tools you’ll use (Android Studio, backend framework, hosting stack, etc.), and an estimated turnaround time. Successful delivery is the live server running and t...

    $85 Average bid
    $85 Oferta promedio
    38 ofertas

    Preciso de um aplicativo de entrega de gás que cubra todo o fluxo de compra, do cadastro ao recebimento do botijão na porta do cliente. O escopo inclui: • Cadastro e login de usuários – autenticação simples e segura. • Sistema de pedidos – seleção de produtos, carrinho e confirmação. • Pagamento integrado via Pix, com retorno de status automático. • Rastreamento em tempo real do pedido no mapa, exibindo posição do entregador. • Painel administrativo na web para gerenciar produtos, preços, estoque, pedidos e entregadores. Entrego o design básico e a lógica de negócio; espero que você desenvolva o app (Android + iOS) e o painel a...

    $19 / hr Average bid
    $19 / hr Oferta promedio
    69 ofertas

    Title: SurveyJS Form, Configurable Rules Engine & Compliance Dashboard – Pilot Project Project Description I’m looking for an experienced developer to help digitize and automate a complex compliance/reporting form based on reporting guidance. The goal is to replace manually reviewed forms and manual Excel summaries with a SurveyJS‑based solution, a configurable rules engine, and a reporting/dashboard layer. The work will start with a small paid pilot task so you can demonstrate your ability before we expand to the full project. What I need The final solution should: - Build the full questionnaire in SurveyJS (JSON) based on an existing annotated PDF form and instructions. - Implement completeness and consistency rules (required fields, conditional questions, required upl...

    $130 Average bid
    $130 Oferta promedio
    117 ofertas

    Preciso de um aplicativo de entrega de gás que cubra todo o fluxo de compra, do cadastro ao recebimento do botijão na porta do cliente. O escopo inclui: • Cadastro e login de usuários – autenticação simples e segura. • Sistema de pedidos – seleção de produtos, carrinho e confirmação. • Pagamento integrado via Pix, com retorno de status automático. • Rastreamento em tempo real do pedido no mapa, exibindo posição do entregador. • Painel administrativo na web para gerenciar produtos, preços, estoque, pedidos e entregadores. Entrego o design básico e a lógica de negócio; espero que você desenvolva o app (Android + iOS) e o painel a...

    $19 / hr Average bid
    $19 / hr Oferta promedio
    90 ofertas

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