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Freelance Testing Developer - Alok Agarwal
Freelance Testing Developer5.0 (489 reviews)
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I have a great passion for solving problems and can help people with various programming languages, databases, information systems, software related projects.

TestingHTML/CSSPHPJavaCNode.jsHaskellMongoDBWordPressFlaskDatabaseRQtOpenCVSeleniumJenkinsArduinoSalesforceDartOCamlJMeterRaspberry PiWooCommerceJiraVerilogFirebaseShopifyServer AdministrationReactGoogle Cloud PlatformMATLABNixKotlinTableauServiceNowOdooSplunkGameMakerBizTalk ServerApache KafkaReact NativeDeep LearningBlockchainQlik SenseMuleSoftPower BIGoogle Data StudioNext.jsSnowflakeAirflowVB.NETRobloxFlutterGoogle Apps ScriptAppSheetGolangGodot EngineLoadRunnerMicrosoft Dynamics CRMDiscordUiPathCypressDatabricksGoogle apisVue.jsFastapiPlaywrightSupabaseMicrosoft Power PlatformFlutterFlowPythonC#C++SQLLinuxEclipseExcelVisual StudioAPIGoogle MapsMicrosoft AccessJava EEExcel VBAPowerShellSharePointUbuntuAzureGitHubLuaphpMyAdminResponsive DesignTypeScriptMaven 3YAMLJUnit 4AnsibleUI designWeb DevelopmentDockerApexETLData VisualizationSpring BootFlowJavaScriptResponsive LayoutGame DesignRustApache SparkRStudioKubernetesSwaggerJSON APIQlikViewAzure SQLPower QueryReduxEmbedded SystemsAWS DynamoDBGDScriptPostmanTerraformTest AutomationTensorFlowKerasAWS Lambda.NET CoreSolidityDAXNixOS.NETLinux System AdministrationWeb3Data modelingSalesforce Marketing CloudASP.NET CoreASP.NETMobile App DevelopmentPyTorchSalesforce lightningSharepoint 2016Salesforce AdministrationRTOSAzure FunctionsTailwind cssMicrosoft SharePointDiscord BotAws glueAzure Blob StorageLightning Web ComponentsAzure Data FactoryAzure logic appsExcel solver DeFiDataverseSolanaPhp8Apache HTTP ServerAWSLangchainGenerative AILuauPower AppsPower AutomateRust programming +159
Freelance Testing Developer - Jignesh Patel
Freelance Testing Developer5.0 (59 reviews)

Tech Lead and Mentor with ten years of experience in various domains and tech stacks following the industry's best practices, architecture, testing, code reviews, debugging, profiling, and CI/CD pipelines. **I have something special for you - let's discover:** - Student discount is applied automatically. - Displayed rate is not pocket friendly - no worries - I have something special for you. <br/> **Highlights:** - Mentoring is one of my passions, and I have helped numerous mentees on their journey to become successful developers in various fields such as web, native mobile, and cross-platform development. - I have helped many developers to fix critical bugs and implement complex features on the platform. - Proficient in working with teams on software development life cycle(SDLC) from requirement gathering or planning, defining, designing technical architecture, building or developing, testing, deploying, and maintaining applications - Well verse with development process/tools like Github Actions, CircleCI, CodeMagic, Fastlane, Jenkins, BuddyBuild, Git workflow, Github workflow, Agile PM tools, Continuous integration, and continuous deployment(CI & CD), Test/Domain-driven development with keeping healthy test code coverage, etc. - Proficient in creating and working with different kinds of APIs - REST / GraphQL - Proficient in working with databases SQL and NoSQL - Proficient in object-oriented design, data structures, problem-solving, complexity analysis, and debugging. - Proficient in writing efficient, maintainable, reusable, testable code that preserves privacy and security. - Proficient with different platform/services integrations - Right knowledge of toolset and libraries for effective and productive work.

Freelance Testing Developer - Rengaraj
Freelance Testing Developer5.0 (2 reviews)

I have experience in Python for more than 10+ years. I have been using Python in Embedded systems. I have experience in Making Test setup for various Embedded device for automation testing.

Freelance Testing Developer - Lyle Poisson
Freelance Testing Developer

Senior data engineer specializing in financial data infrastructure, large-scale pipeline architecture, and cloud data systems on AWS/GCP/Snowflake. I build and fix data pipelines that handle real stakes — regulatory reporting, trading infrastructure, high-volume financial data — and I have a track record of measurable improvements: full data loads from 3 weeks to 6 hours, ingest times from 45 minutes to 3, query runtimes improved 500%. Recent work: 🏦 Lead data engineer at MSRB (US federal regulator, $4T municipal bond market): 30 ETL pipelines supporting $9B+ in daily trades, pricing data availability increased 800% across 2.7M securities 📦 Data infrastructure at Trafigura: serverless pipelines processing ~500GB of multi-domain financial, industrial, and geopolitical data 📑 Greenfield SEC filing pipeline: 20 years of filings across 4,000+ companies, structured for LLM querying ⚙️ DataPraxis: container-based ingestion platform (GCE/Docker/Kubernetes) reducing ingest time from 45 minutes to 3 🌍 Catalist: Productionizing machine learning models at 1,000,000x scale and implemented Cloudera colocation -> BigQuery transtion MS Applied Mathematics & Statistics, Johns Hopkins University.

Freelance Testing Developer - Aldo Sorbara
Freelance Testing Developer5.0 (61 reviews)

I'm a senior fullstack JS developer. I am a team player and I love to learn new things and share my experience. I have been working as a developer since 2009, mostly as a front-end. Some of the things that I've made: * Static webpages (freelance). * Working as a support and developer engineer working closely with Customer Support team. * Developing a new CRM to replace Salesforce in MercadoLibre (biggest e-commerce latam company) * Developing a new UI Library in Wenance to share components between company apps. I have +10 years of experience in HTML/CSS, Js, React and nodeJS

Freelance Testing Developer - Nicolas Pohle
Freelance Testing Developer5.0 (10 reviews)

As a Sr. Test Automation Engineer and Technical Lead with about 10 years of experience in the IT space, I have a deep understanding of Claude Code, AI Agent Platforms, AI Harnesses, Quality Assurance, Back-End Programming, and Continuous Testing. With my expertise in designing and implementing sophisticated testing frameworks, I am skilled in both manual and automated testing and have a keen eye for identifying areas for improvement and optimization. Above all, I am passionate about empowering individuals to succeed and creating a culture of excellence and innovation, where Continuous Testing is integrated into every stage of the agile software development life cycle. I've been lucky enough to work for several enterprise-level clients in a wide diversity of domains, including entertainment, banking, finance, and e-commerce. Top quality is always expected, and keeping up with trends is a must.

Freelance Testing Developer - Sam
Freelance Testing Developer

I have 10 years of experience as an engineer, the last 5 as an embedded software engineer working on various IoT products. I'm curious and motivated and possess strong analytical and problem-solving skills. I love to discuss ideas with my teammates to find the best solution to a problem. I also have an eye for detail and a sensibility for aesthetics and have recently taken on work as a product manager. I'm honest, kind and patient. Looking forward to being your mentor!

Freelance Testing Developer - Chris Thorne
Freelance Testing Developer5.0 (168 reviews)

Hi, I'm Chris, a software engineer based in London working primarily with web technologies. As an experienced professional with a computer science background, I can help you learn or improve in many areas of software development and am happy to tailor sessions to your needs. In terms of topics we can dive really deep into, my professional toolset nowadays is primarily: - Python - Django - JavaScript - React - Next.js - PostgreSQL - Docker - AWS (qualified Solutions Architect) - Azure I also conduct technical interviews and would be happy to work through some interview-style questions if that's something you need to prepare for. I have around 10 years of professional experience but my interest in programming goes back 17 years when I first started learning Lua scripting as a hobby with a mentor of my own. I strongly believe that anyone can learn to code if they set their mind to it with access to the right support for the questions we all have when learning something new. In the past, I've also done some open-source work and notably managed to contribute a bug fix to CPython in one of the language codec modules. This is something I'd love to do more of or guide others in doing. If you're looking for a patient mentor with a wide range of experience who can break things down into plain English terms, don't hesitate to get in touch! ---- **Links:** - LinkedIn: https://www.linkedin.com/in/libcthorne/ - GitHub: https://github.com/libcthorne/

Freelance Testing Developer - Mati Dastugue
Freelance Testing Developer5.0 (19 reviews)

Experienced Web Developer adept in all stages of advanced web development. Knowledgeable in user interface, testing, and debugging processes. Bringing forth expertise in design, installation, testing and maintenance of web systems. Equipped with a diverse and promising skill-set. Proficient in an assortment of technologies, including Javascript, ReactJS, NodeJS, HTML5 and CSS. Able to effectively self-manage during independent projects, as well as collaborate in a team setting.

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Frequently asked questions

How long do Testing projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Testing project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Testing request on Codementor, check out our article.

How much does it cost to hire a freelance Testing developer?

We don’t charge anything when you post a freelance hiring request for Testing developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What makes Codementor Testing developers different?

We do a comprehensive technical and communications screen of all Testing developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Testing developers’ user satisfaction rates.

What happens if I’m not happy with the freelancer’s work?

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