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Top freelance UI Testing developers available to hire
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 love breaking down complex problems into small, understandable pieces. I want you to leave our sessions feeling more capable than before we met, so that you can confidently move forward knowing that if you encounter a similar problem again, that you're prepared and ready to tackle it yourself.
With over 13 years of corporate experience, including 5 years working extensively with React and TypeScript, I bring a wealth of practical knowledge to our sessions. Recently, I left the corporate world to pursue my passion for developing a Crypto Video game full-time.
In my free time, I’m dedicated to helping others enter the tech industry by demystifying the often intimidating barriers it presents. My goal is to empower you to overcome any obstacles you encounter, giving you the tools and confidence to solve similar problems independently in the future.
I'm excited about the opportunity to work with you and help you achieve your goals in the tech industry.
Looking forward to our journey together!
Is your AI-powered MVP built on a fragile 'vibe-coded' foundation? Are you struggling to scale a prototype that was built with lightning speed but is now plagued by bugs, security holes, and technical debt?
I transform brittle AI prototypes into robust, **production-ready applications**. As a senior AI engineer specializing in the **Node.js** and **React** ecosystem, I bridge the gap between rapid, AI-assisted development and the disciplined engineering required for scalable, secure software.
But robust software is only half the battle. The other half is making it *work for your business*. I design and implement **intelligent automation workflows** that connect your apps, eliminate manual tasks, and free up your team to focus on high-impact work.
Whether you need to rescue a failing project, automate a core business process, or build a scalable MVP from the ground up, I provide the expert oversight to ensure your AI initiatives deliver real, measurable value.
**My Core Services:**
* **🤖 AI Code Rescue & Remediation:** I conduct deep **AI code audits** to debug, refactor, and secure fragile codebases (especially those built with LangChain.js). I turn unmaintainable prototypes into stable, scalable assets ready for real users.
* **⚙️ Intelligent Workflow Automation & Integration:** I design and build digital assembly lines for your business. I offer a full spectrum of automation solutions:
* **Rapid Integration:** Using **Zapier, Make.com & n8n** to connect your existing tools and solve immediate process bottlenecks.
* **Custom API Development:** Building custom **Node.js** APIs and webhooks to connect proprietary systems or handle complex logic that no-code tools can't.
* **AI-Powered Decisions:** Infusing your workflows with intelligence using the **OpenAI API** to triage support tickets, qualify sales leads, or generate content automatically.
* **🚀 Custom AI Solution Development:** I architect and build bespoke AI solutions from scratch, from **Custom GPTs** and intelligent **AI Agents** to complex RAG (Retrieval-Augmented Generation) pipelines that leverage your private data.
* **👨🏫 AI Engineer & Career Mentorship:** I provide 1-on-1 coaching to help developers navigate the AI landscape, master tools like LangChain.js, and build a successful career in AI engineering and automation.
**My Tech Stack:**
* **Languages:** Node.js, TypeScript, JavaScript
* **Frameworks:** React, Next.js, Express.js, NestJS
* **AI / LLM:** LangChain.js, OpenAI API, LlamaIndex, Vector Databases (Pinecone, Qdrant)
* **Automation Platforms:** Zapier, Make.com, n8n
Ready to move past the prototype phase and build a real business? **Send me a message with your project details or book a session to get started.**
---
### Service Packages
* **Package 1: AI Code Audit & Production-Ready Roadmap**
* **Description:** Have an AI-generated MVP that feels unstable? I'll perform a comprehensive review of your codebase. You'll receive a detailed report identifying security vulnerabilities, performance bottlenecks, and a concrete, actionable roadmap to make your application **production-ready**. This is the perfect first step to de-risk your project.
* **Package 2: Intelligent Automation Workflow**
* **Description:** Let's put a core business process on autopilot. We'll map out a high-impact workflow and I'll build a robust automation to solve it. Ideal for **automating lead qualification**, **triaging customer support tickets**, or **streamlining content pipelines** using the best tool for the job—Zapier, Make, or custom Node.js scripts.
* **Package 3: Scalable AI MVP Development**
* **Description:** Need to build an MVP the *right* way? I'll architect and develop a **scalable MVP** from day one, using professional, spec-driven development practices. We'll build a strong foundation with clean, documented code and a modern stack (Node.js, React) to avoid the technical debt that plagues "vibe-coded" projects.
I am a highly skilled **Senior Software Engineer** with over **20 years** of experience in designing, developing, and managing small to large-scale applications using **C# and .NET (Standard & Core)** frameworks. I am proficient in both backend and frontend development, and I deliver high-quality solutions following best practices in design patterns, architecture, and testing.
**Top focus on providing AI solutions integration to .net applications for multiple clients.**
My recent expertise includes Blazor, Radzen, Oqtane, ABP.io, ASP.NET Zero, ASP.NET Boilerplate, and cloud platforms like Azure and AWS, with strong experience in CI/CD pipelines, task management, and Agile/Scrum methodologies.
I am experienced in unit and integration testing using xUnit, NUnit, Moq, BUnit, and performance/load testing with BlazeMeter and JMeter.
**Key Expertise**
- C# / .NET Development (20+ Years): ASP.NET MVC, ASP.NET Core, WebAPI, Standard & Core Frameworks, Design Patterns.
- Frontend & UI Technologies: Blazor (Server & WebAssembly), Radzen, Oqtane, Angular, React.js, TypeScript, JavaScript, jQuery, HTML5, CSS3, Bootstrap.
- ASP.NET Zero & Boilerplate Solutions (9+ Years): Enterprise-grade SaaS applications, multi-tenant systems, modular architecture.
- Database & Data Management (15+ Years): SQL Server, Oracle, MongoDB, SQL Azure, Stored Procedures, T-SQL, MDX, SSRS, Telerik and most of latest toolkits. Vector DBs.
- Cloud & DevOps (12+ Years): Azure, AWS, Azure Functions, Azure API, CI/CD pipelines, GitHub, BitBucket, TFS, SVN, Jira, Trello.
- Testing & Performance: Unit testing (xUnit, NUnit, Moq, BUnit), Load & performance testing (Blazemeter, JMeter).
- Software Design & Architecture: SOLID principles, SOA, TDD, Code First & DB First, scalable and maintainable enterprise solutions.
- Agile & Project Management: Scrum, CMMI, Basecamp, Microsoft Teams, Whimsical.
**Professional Highlights**
Provided complex, enterprise-level solutions for top global companies including:
The New York Times, Walmart, Knowledge Shop Pty Ltd, Easton Investments Ltd, Merit Wealth Pty Ltd, Beam, Live Help, Decisions, DigitalRep, Matrix Protection.
Extensive experience in full lifecycle development, from requirement analysis and architecture to deployment and maintenance.
Strong problem-solving and leadership skills, mentoring teams and ensuring high-quality deliverables.
Regards,
**Qaiser Mehmood**
`Typescript (Javascript), Python (Django)`, `PHP (Laravel, Wordpress)`, `Flutter (Dart) and` `3X Certified Salesforce Consultant` `(Dart)` with 5+ years dedicated expertise in end-to-end application development. Proficient in harnessing Python frameworks including Django, Flask, Pandas, Tensorflow, and Microservices. Skilled in AWS, GCP, Heroku Cloud platforms, combined with frontend expertise in NextJs, React.js. Well-versed with databases like MySQL, PostgreSQL, MySQL, and MongoDB. Utilizes robust communication and collaboration capabilities to ensure projects resonate with client goals efficiently and sustainably.
`**Key Strengths & Qualifications:**`
* **Full Stack Expertise:** Proficient in frontend and backend development, with a focus on creating seamless user experience and scalable server-side applications.
* **Backend Mastery:** Extensive experience in Python language programming, enabling the development of efficient and maintainable backend systems, Restful APIs, and microservices using Django, Flask, TensorFlow, LLAMA and Numpy.
* **Frontend Proficiency:** Skilled in modern frontend technologies, including JavaScript ES6, React, Angular and Vue, allowing for the creation of responsive and user-friendly interfaces.
* **Database Management:** Experienced in designing and optimizing databases on PostgreSQL & Oracle, to ensure data integrity and high-performance data retrieval.
* **Cloud Expertise:** Proficient in deploying applications on major cloud platforms such as AWS, Azure, and GCP, with knowledge of containerization (Docker, Kubernetes).
I'm well-versed in a broad range of AWS services, including EC2, S3, Lambda, and VPC. My responsibilities have encompassed designing scalable architectures, implementing security best practices with IAM, and optimizing cost and performance across cloud resources.
I have hands-on experience deploying and managing containerized applications using Docker and Kubernetes. This includes setting up Kubernetes clusters. My work ensures high availability and scalability of microservices architectures.
I am a highly skilled software engineer with 5 years of experience, proficient in transforming wireframes into MVPs, architecting scalable microservices, and developing single-page applications. My technical expertise includes backend technologies like FastAPI and Flask, frontend proficiency in React and Vue, testing excellence, and database management. Key strengths include problem-solving, attention to detail, and thriving in collaborative environments. I excel in team management, fostering growth and productivity, and mentoring team members. Currently seeking a full-time role to leverage my skills and contribute to an innovative organization, with a focus on leadership growth and professional advancement.
I design and build complete digital products, from strategy through deployment.
Not just mockups: working software, shipped fast. I led the product redesign of Spreaker, which won Microsoft BizSpark Most Promising Startup, grew to millions of users, and was acquired by iHeartMedia.
Recent work includes Shopify e-commerce stores, SaaS MVPs, and native macOS apps shipped end-to-end. 20 years combining product design with full-stack development (React, Next.js, React Native, Swift, Electron, Shopify).
I am an adept **Full Stack Software Engineer and Architect** and with a wealth of experience in frontend, backend, and Data Structures and Algorithms (DSA) solution development. My expertise spans **clean architecture, TDD(test driven development), code reviews, debugging, and profiling**, enabling the delivery of high-quality solutions within constrained short timeframes.
I have worked and collaborated with numerous prominent global blue chip corporations, startups, and international clients. Additionally, have made substantial contributions to Pluralsight and Stack Overflow, boasting a reputation exceeding 37k+ and ranking within the top 0.30% of users on the latter platform.
Motto: Full refund in case of no help.
Discounts:
- Student discount is applied automatically.
• Senior software engineer, have worked as a Subject Matter Expert and lead with the primary role to develop features, solve complex bugs, architecture refinements, feature integration, and development.
• I intent to deliver a top-quality experience by delivering the most optimal solutions and guidance to enlighten the learners.
• I have helped many developers to fix critical bugs and implement complex features on the Codementor platform.
• Teaching is one of passing and I have helped numerous mentees on their journey to become successful developers in various fields such as web, native mobile, and big data.
• I have expertise in curating and simplifying the content to deliver the best experience with different analogies.
• I am deft at feature implementation, debugging, and refactoring.
If you have any questions, Feel free to reach out, looking forward to meeting you.
- I am expert in Test automation. I have created regression pack using various technologies like: **restassured**, okhttpclient, restTemplate, selenium, page object model using page factory, cucumber, extent report)
- I have delivered many selenium/API automation project successfully .
- I have 12 year experience in API/frontend automation. ( started working from soap request and qtp ;) )
- I can **integrate regression pack** with Jenkins and schedule it.
- I can build a stable automation suite, which will simplify onboarding of new APIs/Pages.
- I can also do performance testing using open source tool Jmeter
- UI and API Development using Python, **Flask Framework**:
- Developed an internal utility for data analysis of Jira
- This includes libraries like request, Flask-Login, Flask-Form, Flask bootstrap.
- Also experienced in developing APIs using Flask-RESTful
How to hire a freelance UI Testing developer on Codementor
STEP 1
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STEP 2
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STEP 3
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Frequently asked questions
How long do UI 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 UI 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 UI Testing request on Codementor, check out our article.
How much does it cost to hire a freelance UI Testing developer?
We don’t charge anything when you post a freelance hiring request for UI 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 UI Testing developers different?
We do a comprehensive technical and communications screen of all UI 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 UI Testing developers’ user satisfaction rates.
What happens if I’m not happy with the freelancer’s work?
As a platform, we strive to ensure you’re always happy with your UI Testing project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.
For more answers to frequently asked questions, see here.