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Top freelance Performance Testing developers available to hire
I’m Michael Ayoub, a Solution Architect and Innovation Leader with over 15 years of experience delivering complex, scalable, and secure technology solutions across fintech, banking, aviation, and enterprise platforms. I specialize in digital transformation, payment systems, enterprise architecture (TOGAF), and product development, with hands-on leadership across B2B, B2C, and microfinance ecosystems. Having held senior roles in companies like Sharjah Airport, Banque Misr, Fawry, and CashCall, I bridge business goals with cutting-edge technology, driving innovation, operational efficiency, and regulatory compliance. Passionate about aligning IT strategy with business value, I thrive in dynamic, cross-functional environments and continuously explore emerging tech to fuel growth and competitive advantage.
I define the architecture. For 21 years, I've been the person CTOs and lead developers call when systems fail under load, migrations are at risk or AI integration needs to work right the first time.
With expertise in .NET, Python, Blazor, ASP.NET Core, SQL and agentic AI architecture (LLMs, reasoning engines, Semantic Kernel, LangGraph, tool-calling agents), I design systems where performance, reliability, and intelligent automation aren't optional—they're the baseline.
I deliver AI in production, not prototypes. I’ve architected and deployed AI-powered systems across financial platforms, education and exam automation, and real estate market intelligence, including enterprise-grade solutions for organizations such as The New York Times, Project Management Institute (PMI), Walmart, Merit Wealth, Namfus and BlueberryCMS.
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**Here's where I'm most useful to you:**
- **The AI Integration Trap** — You've been asked to add AI to your existing .NET system but don't know whether to use *Semantic Kernel*, raw OpenAI APIs, or a Python sidecar. I've made that decision dozens of times. I'll make it faster and safer for you.
- **The Blazor Bottleneck** — Your Blazor app is slow, state management is tangled, and you're unsure if you chose *Server or WASM* incorrectly. I can diagnose what went wrong and map a clean path forward — often in a single session.
- **The Legacy Modernization Cliff** — You have a 10-year-old .NET system that needs AI or modern tooling but wasn't designed for it. I specialize in *incremental refactoring paths* that don't require a full rewrite and don't break what's already working.
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**What I Do Best:**
- **Software Architecture & System Design** — scalable, maintainable systems from greenfield to enterprise
- **AI Agent Development** — production-grade agents with Semantic Kernel, LangGraph & AutoGen — *not demos*
- **Blazor & ASP.NET Core** — Server, WASM, hybrid — full-cycle development and performance tuning
- **Python & AI Automation** — RAG pipelines, workflow automation, voice AI, LLM integrations, chatbots
- **Legacy .NET Modernization** — refactoring strategy, migration paths, incremental upgrades
- **Architecture Audits** — identifying structural risk before it becomes a production incident, not after
- **Debugging Complex Systems** — when the stack trace doesn't tell the whole story
**If any of this sounds like your current situation — DM me. I respond to every message.**
I am a software professional with 17 years of experience, having worked with big names like Microsoft and Google.
In my spare time, I love to share my knowledge with others. I am passionate about **helping people fix their code to remove bugs** and make it more human-readable and hence easier to maintain.
I am a **seasoned interviewer** as well, and love to help people prepare for tech interviews.
I am passionate about **Maths** as well and love to solve Maths problems and help others understand Maths better.
Hello! If you need help with game development, I'm here to help you find (and learn) effective techniques and solutions for your projects.
As a mentor, I can help you with **Technical Guidance** (assistance with coding, debugging, optimization), **Design Insights** (feedback on mechanics, level design, UI), **Asset Advice** (guidance on using time-saving assets/tools), and **QA** (thorough testing and bug tracking), among other topics.
I can answer questions on topics such as **Development Challenges** ("How can I optimize my game for better performance?"), **Design Decisions** ("How to improve the game UX?", "What mechanics can make my gameplay more engaging?"), and **Troubleshooting** ("Why is my game crashing on startup?", "Why is my game build failing?", "How do I fix this bug in my C# code?"), among other topics.
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Game and Software developer since 2010. I have 10+ years of experience with Unity, C#, and Game Design. I also have experience with Unreal Engine, Level Design, 3D Modeling, and Mobile Development.
I developed games for PC and Android. My background includes working on:
● SAK'D (2D metroidvania game, demo released on Steam)
● NekoSuki! ~ Kitty Love Adventure (action-adventure game, in development)
● Time Master (puzzle-platformer game, released on Steam)
● Baneville (an educational game for Brazilian schools)
I have knowledge and experience with:
● Unity, C#, async-await (UniTask), advanced programming concepts
● Unreal Engine 5, Blueprints, C++
● Godot Engine, RPG Maker, GameMaker, Ren'Py
● Game Design, Level Design, UI Programming, Game Optimization, QA
● Unity Addressables, Timeline
● Third-party assets and plugins: Platformer Project, Corgi Engine, ORK RPG Framework, Game Kit Controller, World Streamer 2, DoozyUI, RealtimeCSG, Rewired, Animancer, RealToon, Dialogue System for Unity, MicroSplat, MicroVerse, etc.
● Blender, VRoid Studio (3D Modeling, Rigging, Skinning, Animation)
● Photoshop, Krita, GIMP (Texturing, Image editing)
● Wwise Audio Middleware
● Generative AI: Stable Diffusion, ComfyUI, SwarmUI, NovelAI
● Mobile Development: Android (native), iOS (native), Flutter, Xamarin, Xamarin.Forms
● Kotlin, Swift, Dart, Java, Python
Hi! I'm Experienced Full-Stack Web Developer (Angular, React, Javascript, NodeJs), Use my powers to turn your dreams into reality. I learned to program making websites from scratch with HTML, CSS, Javascript, React, Redux, Angular, NodeJs, Express and MongoDB.
MERN stack (MongoDB, Express, ReactJS, and NodeJS).
MEAN stack (MongoDB, Express, AngularJs, and NodeJS).
Wordpress (Custom Themes, Modifications, Performance... )
This means that you can ask me for help on anything related to Javascript, HTML, CSS (and SCSS/Sass of course), responsive/mobile websites, usability an so on.
With 9 years of experience developing software, I always advocate for the best available solutions and the cleanest code. I also love to explain how and why the code works so you can also learn more from it.
- 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
👋 Hi, I’m Vivek—a Senior Python Backend & Automation Engineer with 6+ years of experience helping clients build, debug, and optmize backend systems, APIs, and data workflows.
I help clients:
🚀 Python backend development (Django, FastAPI) from scratch to deployment).
🧠 Automate business workflows using Python, Pandas, NumPy, SQL, and Excel.
🌐 REST/GraphQL API design, integration & debugging
⚙️ ETL pipelines, data processing & workflow automation (Pandas, SQL)
🧪 Unit testing, performance tuning & production issue fixing
👨🏫 Code reviews, mentoring & problem-solving support
I am an ex Amazon now working on a elite hedge fund; graduated with a Master of Computer Science.
I have professional experience in **multiple programming languages** and have designed multitude of application from ground up. I have a lot of experience in designing **scalable distributed systems**.
I enjoy providing **thorough code reviews**. I am very keen to find design and coding bugs.
I have done lot of technical interviews and has hands on experience in the recruitment process. I have a good track record **training people for technical interviews**.
Thrived in start-up environments and teams that do battle daily for product and customer success. I have successfully designed and built systems in various landscapes, industries, and infrastructures.
Hi, I am Adeyinka but you can call me Yinka for short. I double as a Software Developer and a QA Automation Engineer. I have worked with Andela in Lagos Nigeria for 7+ years and have about 8 years of overall professional experience.
I am seeking a position as a QA Automation Engineer with opportunities for problem-solving, planning, and organizing within a dynamic organization, enabling continuous self-improvement and career growth.
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Frequently asked questions
How long do Performance 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 Performance 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 Performance Testing request on Codementor, check out our article.
How much does it cost to hire a freelance Performance Testing developer?
We don’t charge anything when you post a freelance hiring request for Performance 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 Performance Testing developers different?
We do a comprehensive technical and communications screen of all Performance 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 Performance 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 Performance 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.
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