Hire Top Freelance Testing DevelopersFind top freelance Testing developers quickly and easily on Codementor. Work with our vetted developers who have the proven skills and experience to get the job done. Get help with projects by-the-hour or long-term. Hire a trusted Testing freelancer on Codementor today.
Seasoned Web Developer and Blockchain enthusiast with a proven track record in the IT and services industry. Expertise in Research, PHP, HTML, JavaScript, and Blockchain development, including Smart Contracts. Skilled in automation, application testing, and cybersecurity analysis for web and mobile apps.
I have a great passion for solving problems and can help people with various programming languages, databases, information systems, software related projects.
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.
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.
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.
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
### [Escuela.dev](https://escuela.dev/en) Learn how to code in Malaga, Madrid or online. Perfect for aspiring developers or career changers. Book a free trial lesson <https://escuela.dev/en/free-class/> ## Generative AI skills: - Text generation (OpenAI, Anthropic, Groq, Amazon Bedrock, Google Gemini models) and offline models such as LLaMA - LangChain, Autogen, CrewAI - DALLE and Stable Diffusion for image generation 🤖 - MongoDB Vector Database for RAG (Retrieval-Augmented Generation) models. ## Software Development skills: - JavaScript and TypeScript (React, React Native, Next.js, Astro) 📱 - NodeJS, GraphQL, REST APIs (Express, Fastify, Mongoose) 🚀 - Web development (SCSS, CSS, HTML) 🌐 - Testing (Jest, Vitest, Playwright) - Python 3 (Flask, FastAPI) 🐍 - MongoDB, PostgreSQL and Redis ## DevOps and SysAdmin skills: - Linux (Ubuntu, Debian and Bash) 🐧 - Virtualization (Docker) 📦 - Amazon AWS, Google Cloud, DigitalOcean, MongoDB Atlas, Vercel ☁️ - Cloud Functions (AWS Lambda, Vercel Edge) 🐑 - Monitoring and Backup (New Relic, Sentry, Coralogix) - Continuous Deployment (CD) and Continuous Integration (CI) (GitHub Actions, Jenkins) 🚀 Open source enthusiast: ❤️ https://github.com/gianpaj ⬅️ Click on the **Let's Chat** button to discuss your goals.
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.
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.
I am a seasoned software developer with years of experience in designing, developing, and deliveringhigh-quality web and enterprise solutions. My capacities span a wide range of technologies including; cloud computing, microservices, enterprise solutions development, server systems, messaging systems, database systems, containerization, CI/CD, data engineering andenterprise development. * 15+ years experience in designing, developing and managing web and enterprise applications as a senior full stack developer in various domains. * Extensive work experience involvement in all phases of Software Development Life Cycle (SDLC) starting with project initiation, requirement gathering, requirement analysis, functional design, systems design, coding and implementation of multi tier enterprise solutions using Agile and SCRUM methodology. * Extensive experience in Java, Jakarta EE technologies such as JDBC, JSP, Servlets, Spring Framework (Spring Boot, Spring IOC, Spring AOP, Spring MVC, Spring Cloud, Spring Security, Spring Data JPA, Spring Cache, Hibernate, activeMQ etc). * Extensive experience in the implementation of Event Driven, RESTful APIs and Microservices using spring boot and spring cloud. * Experienced in developing UI or frontend based applications with JSP, EL and React.js. * Extensive use of Docker containers to dockerize applications into images for CI/CD applications pipeline setup, to run tests in sandboxed environments for consistent test runs, on local and continuous integration to staging and production environments.
We'll share your request with freelancers with relevant Testing skills and expertise.
Use our messaging feature to instantly chat with freelance Testing developers around the world.
Choose the best freelance Testing developer that meets your needs.
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.
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.
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.
For more answers to frequently asked questions, see here.