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Testing and quality assurance is one of the best ways to discover errors and bugs in platforms, so that they are presented to the world fully optimized.
Testing engineers truly understand the processes and policies of quality assurance inside out, and can ensure that everything is intact so that the right feedback is relayed to the company, so the best possible platform can be offered to users. Get a free quote today from Freelancer.com.
Publica tu proyecto gratis y conéctate con Testing Engineers profesionales listos para comenzar hoy. Compara ofertas, calificaciones y portafolios y solo paga cuando estés satisfecho con el trabajo.
~60 seg
a la primera oferta
55+
ofertas por proyecto
252+
Testing Engineers en línea
Sin pagos adelantados: paga únicamente cuando estés satisfecho con el trabajo entregado
7,6
7,6
99%
Saldan, Argentina
$15 USD por hora
✅ Audio Engineering ✅ Music production ✅ Composing ✅ FL Studio, Studio One and Ableton ✅ Soundtracks, orchestral or instrumental music, beatmaking. ✅ Multinstrumentalist. ✅ Music teacher ✅ Mixing and Mastering ✅ Audio restoration and enhancement 👇👇👇 Listen to all my work in the portfolio 👇👇👇
8,4
8,4
95%
Buenos Aires, Argentina
$35 USD por hora
"If human thinking fails, try anthropoid thinking. Fresh approach helps remove the obstacle." There used to be an ape-man in the photo: MoonWatcher. His bio takes us way back in time. I like to think of MoonWatcher as my oldest known ancestor. Had he lived in our times, he'd be well versed in the following: ● Database systems: • Airtable: database design, automation and scripting. • MS-Access, a sentimental favorite, handy and versatile like the ancient bone-made tools. • other databases: MS-SQLserver • MySQL • PL/SQL • DB2 SQL/400. • lastly a set of forgotten, prehistoric tools: dBase, Borland, Paradox, FoxPro. ● Programming languages (in alphabetical order): • C# • Cobol, all its reincarnations • IBM AS/400-iSeries, its languages: RPG, Cobol, CL, SQL/400, Query/400. • Javascript • SAP Datasphere, SAP Analytics Cloud • Visual Basic, all its reincarnations As you've read up to this point, you may feel intrigued by MoonWatcher's origins and developments. Read the first chapters in Arthur Clarke's "2001, A Space Odyssey". The anthropoid's fears and amazements, his early attempts at understanding the world, are magistrally depicted.
7,2
7,2
99%
Cordoba, Argentina
$19 USD por hora
BIO: Graphic designer & programmer, more than 10 years of experience in Web designs (HTML+CSS+PHP) and layout of web pages. http://www.nicolasnordio.com.ar/ Area of Expertise: Photoshop, Ilustrator, WordPress, HTML, CSS, JQuery. PHP, JQuery.
6,4
6,4
98%
Villa María, Argentina
$45 USD por hora
Top Rated Full-Stack Developer with 10+ years of experience building web and mobile applications. 110+ completed projects on Freelance. I specialize in three stacks where I deliver the most value: - Backend & APIs with PHP (Laravel, Symfony, CodeIgniter) - clean, scalable, well-documented code. - Frontend & SPAs with Angular - dashboards, admin panels, and complex business applications. - Cross-platform mobile apps with Ionic, Flutter and React Native - iOS and Android, with Firebase, push notifications, and social login. What clients tell me they value most: - I ship on time and communicate clearly. No surprises, no excuses. - I think like a systems analyst, not just a coder - I ask the right questions before writing code, which saves you time and money. - I write maintainable code your next developer won't curse at. - Bilingual: fluent in English and Spanish, so communication is never a bottleneck. I also work with Node.js (Express, REST APIs, JWT), WordPress (custom themes and plugins), C#/.NET, and databases like MySQL, PostgreSQL, SQL Server, MongoDB, and Firebase. Whether you need a new app built from scratch, an existing system improved, or a developer who can take ownership of a project end-to-end - I can help. Send me a message with a few details about your project and I'll reply within a few hours with honest feedback on scope, timeline, and how I'd approach it.
6,3
6,3
100%
Buenos Aires, Argentina
$25 USD por hora
More than 10 years of experience developing all kind of websites. All the work is done by myself, no outsourcing. Main skills: PHP - (object oriented, expertise in multiple frameworks) MySQL - (highly experienced in database optimization and complex multiple-joined queries) JavaScript - (AJAX, JQuery framework) HTML5, XHTML Css3 Facebook Applications Social Networks Integration User Interface Design English / Spanish translations
7,4
7,4
100%
Santos Lugares, Argentina
$30 USD por hora
Brindamos soluciones de software que ayuden a nuestros clientes a alcanzar el éxito en sus negocios, mejorando su productividad, su rentabilidad y su capacidad de competir en el mercado.
4,0
4,0
89%
Ciudad de Buenos Aires, Argentina
$20 USD por hora
## BIO Certified Project Manager Professional® (2009) and Certified Scrum Master (2011) with 15 years managing projects and business development. Wide experience on Program Management for several industries (Search Engines, Oil & Gas, Health Care, Life Sciences, and Energy) Translation Services EN-SPA Project Manager Senior in IT Consulting Area. MSSQL DBA Senior - SQL Book Author: https://www.casadellibro.com/libro-sql-server/9789875263352/1122965 SQL Server 2000 / 2005 Author Microsoft MCP / MCAD / MCSD ## Area of Expertise SQL SERVER MySQL VBA VISUAL BASIC 6.0 Python OFFICE - Expert with Excel automation ACCESS PMI CMMI Digital Marketing - SEO Audits
4,7
4,7
90%
Buenos Aires, Argentina
$35 USD por hora
## BIO Hello, My name is Guillermo im from Argentina and I am +10 years sys / network admin ## Area of Expertise My main expertise area is all related about a LAMP stack web hosting enviorment and its security, currently I manage and support more than 40000 domains. Migration specialist. Server master, performance, security and application tuning. Don't hesitate to contact me, any question is welcome ! Thanks, Guillermo.
4,9
4,9
95%
MENDOZA, Argentina
$40 USD por hora
SaaS & eCommerce Engineer specializing in scalable web platforms, WooCommerce and Shopify solutions, automation workflows, and SEO-driven growth strategies for businesses. I build and optimize high-performance digital products using WordPress, WooCommerce, Shopify, Laravel, Node.js, and React. My focus is creating reliable SaaS integrations, custom eCommerce solutions, and maintainable systems that improve business operations, user experience, and online visibility. Recent work includes: • SaaS platform development and third-party API integrations • WooCommerce and Shopify store development and optimization • Custom plugins, extensions, and automation workflows • Technical SEO, website performance optimization, and search visibility improvements • Admin dashboards and scalable backend systems • Conversion-focused website improvements I combine engineering expertise with SEO knowledge to build websites and applications that are fast, secure, easy to manage, and designed to support long-term business growth. Available for SaaS development, eCommerce projects, SEO improvements, and ongoing technical partnerships.
A Testing / QA Specialist is a quality assurance professional who plans, executes, and documents tests on software to identify defects, verify functionality, and ensure products meet technical and user requirements before release. Hiring a freelance QA specialist gives you an objective expert who validates that your application performs reliably across devices, browsers, and real-world conditions, protecting your reputation and reducing costly post-launch fixes.
A QA specialist is responsible for verifying that software behaves as intended, catches edge cases before users do, and complies with the acceptance criteria defined for each feature. They translate product requirements into structured test plans, execute manual and automated checks, log defects with reproducible steps, and confirm fixes through regression testing.
The commercial value is direct. Releases ship with fewer critical bugs, support tickets drop, conversion-killing flows are caught before launch, and engineering teams spend less time firefighting production issues. For startups and product teams without an in-house QA function, a freelance quality assurance engineer adds a disciplined testing layer on demand.
Quality assurance work spans multiple disciplines. A skilled QA tester typically handles:
An experienced QA engineer is fluent in the tooling that modern software teams expect. Common platforms and frameworks include:
Methodologies typically include Agile and Scrum-based testing, shift-left testing, risk-based testing, exploratory testing, and the test pyramid approach to balance unit, integration, and end-to-end coverage.
QA testing is essential across nearly every software-driven sector. Freelance QA specialists on Freelancer.com support:
Strong QA freelancers show a mix of analytical thinking, technical fluency, and clear documentation habits. Look for:
Sample interview questions you can use directly:
Freelancer.com gives you access to a global pool of QA engineers, automation testers, and software quality assurance consultants spanning every major framework, language, and industry vertical. You can compare profiles, portfolios, certifications, and verified reviews in one place, then run a competitive bidding process where freelancers tailor proposals to your specific testing needs.
Whether you need a one-time regression sweep before a release or an ongoing automation engineer embedded with your dev team, Freelancer.com lets you scale QA capacity up or down without long hiring cycles. Clients set their own budgets, receive competitive bids, and use Milestone Payments to release funds only when testing deliverables meet expectations.
Hiring a QA specialist works best when you treat the brief as a testing scope document. The clearer you are about what needs to be tested, on which platforms, and to what depth, the more accurately freelancers can scope their bids. Below are the three steps to follow.
Your project post is the single biggest determinant of bid quality. A well-defined QA brief filters for testers whose tooling, domain experience, and methodology genuinely match your release. Head to the
Bids are short proposals, not just price quotes. They reveal how each QA freelancer interprets your brief, what testing approach they propose, and whether their suggested timeline is realistic. Read each proposal carefully and shortlist candidates whose understanding of the work matches your scope.
The final decision combines proposal quality with profile evidence. Look at portfolios, ratings, written reviews, and verified credentials, weighing consistency across past QA work rather than a single highlight. For testing roles, documentation quality is a strong proxy for on-the-job rigor.
A QA tester typically focuses on manual test execution, exploratory testing, and bug reporting. A QA engineer adds technical depth, building automation frameworks, writing test scripts, and integrating tests into CI/CD pipelines. Many freelancers cover both roles, but make sure the candidate matches the level of automation your project needs.
For most small and mid-sized projects, a single freelance QA specialist is sufficient and more cost-effective than an agency. Agencies make sense when you need parallel testing across many platforms, dedicated performance labs, or formal compliance audits. You can also hire multiple freelancers on Freelancer.com to form a small testing team for larger releases.
Timelines vary by scope. A focused regression pass on a small web app might take a few days, while building a full automation suite from scratch can take several weeks. Define the test scope, environments, and acceptance criteria up front so freelancers can give realistic timelines in their bids.
Yes. Many clients hire QA freelancers for single engagements such as pre-launch testing, a security review, or building an initial automation framework. Others retain testers on an ongoing sprint-by-sprint basis. Both arrangements are common on Freelancer.com.
Provide product requirements or user stories, access to staging environments, test accounts, supported browsers and devices, and any existing test cases or bug history. The more context you share, the faster the freelancer can design useful coverage and surface real defects.
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