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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!
Microsoft AI Certified and Innovative Applications Architect with 8+ years of IT experience and extensive knowledge on Designing, Architecting, Developing, Deploying and Testing well versed technical solutions using C++, C#, [ASP.NET](http://asp.net/), .NET Core, .NET 5/6/7/8, Angular, Angular JS, JavaScript, JQuery, HTML5, CSS3, SASS, IONIC 5, T-SQL.
Hello, I'm a Lead Frontend Engineer with 5+ years of experience scaling React apps and leading engineering teams. My strengths are in TypeScript, Next.js, architecture, and performance. I want to mentor to share the best practices I've learned and help you solve real-world coding challenges.
I am a Senior Software Engineer with over 14 years of experience specializing in C#, JavaScript, and cloud technologies such as Microsoft Azure and AWS. I led the backend development of a high-traffic banking application at Kuda Bank, increasing the team's productivity by 35% and delivering new features with a quick turnaround. My work at Union Bank improved the alignment between technical decisions and business goals, enhancing efficiency by 30%. I continually expand my skills to deliver exceptional results in fintech, banking, and enterprise software development.
Engineering leader and hands-on CTO with 13+ years of experience building SaaS platforms and the engineering teams behind them. Author of React - The Road To Enterprise and Vue - The Road To Enterprise. Speaker at React Summit, React Advanced London, and Vue Amsterdam.
I'm currently contracting as Engineering Lead at Kaya AI, an AI-powered construction supply chain platform, where I lead 12 engineers and client-facing leads and own the product and client roadmaps. I made a core product that stalled on large data sets respond in under a second (key actions from 10+ seconds, data loading, search and filtering from ~15-20 seconds to ~1 second), cut data loading for non-English users from 30+ seconds to under one, and built a shared library of AI development workflows (spec review, multi-agent implementation and PR review, ticket creation) that 17 engineers adopted within two months, raising per-engineer delivery throughput by ~25%. I also shipped Amber Insights, an AI risk-analysis feature for clients, and designed an enterprise-grade, policy-based permissions system.
Before that I contracted as CTO for IQONICS in the energy sector. I built the engineering function from zero, consolidated three separate codebases into a single multi-tenant white-label platform (tenant-isolated data, custom domain routing, and an RBAC permissions system built from scratch), found and fixed SQL injection and path traversal vulnerabilities in production, moved PDF generation that blocked the whole server for 60+ seconds onto background workers, and halved feature delivery time with AI-assisted development.
I still work hands-on across the full stack, but what I bring beyond it is the ability to make hard architectural calls, turn business needs into a plan a team can deliver, and follow through on it in production.
Credentials
I'm the author of "React - The Road To Enterprise" and "Vue - The Road To Enterprise," covering advanced patterns, scalability, and best practices for building production-grade applications (https://theroadtoenterprise.com/)
I've spoken at and led workshops at major international conferences including:
• React Summit — Composition vs Configuration: How to Build Flexible, Resilient and Future-proof Components (https://portal.gitnation.org/contents/composition-vs-configuration-how-to-build-flexible-resilient-and-future-proof-components)
• React Advanced London — Advanced Patterns for API Management in Large-Scale React Applications (https://portal.gitnation.org/contents/advanced-patterns-for-api-management-in-large-scale-react-applications)
• Vue Amsterdam — Vue Experts Panel & The Case Study of Findlay Web Tech (https://www.youtube.com/live/El8Jw2CFj7g?si=EUVzHQgAbtPNUAwq&t=5507)
• React Wednesdays — Best Practices for Testing React Apps (https://www.telerik.com/react-wednesdays/react-wednesdays-best-practices-for-testing-react-apps)
• GDG React Workshop — How to Handle APIs in React Applications
I've also written 50+ in-depth technical articles for the Telerik/Progress blog. I hold an MSc in Advanced Computer Science (Distinction) from the University of Exeter and a First-Class BSc in Web Design & Development from Northumbria University.
Technical Stack
• Leadership: Team leadership, hiring, product and client roadmaps, PRDs and technical specs, QA process, engineering standards
• AI: Claude Code, Cursor, multi-agent development workflows, LLM integration, AI-assisted code review
• Frontend: React, Next.js, Vue, Nuxt, React Native, TypeScript, TanStack
• Backend: Node.js, Express, Fastify, Python, FastAPI, PHP
• Databases: PostgreSQL, MySQL, MongoDB, Firebase, Supabase
• Infrastructure: AWS (incl. Lambda), Kubernetes, Docker, Celery, BullMQ, GitHub Actions, Datadog, PostHog, VPS
• Testing: Playwright, Vitest, Cypress, E2E & API test automation
• Security: Penetration testing, RBAC and policy-based permissions design, SQL injection & path traversal remediation
Who I Work With
Open to remote full-time and part-time contract roles as CTO, Head of Engineering, Engineering Lead, or Tech Lead, as well as senior full-stack engagements. Also available for architectural consulting, technical due diligence, and mentoring.
I'm Matei, a full-stack developer with over 10 years of experience, specializing in JavaScript, React, and Node.js. I help developers at all levels overcome challenges, from debugging complex issues to understanding core concepts. My approach is patient and tailored to your needs, ensuring you gain confidence and clarity in your coding journey.
Format:
- regular (long term) or one-time
- for any level (beginner/intermediate/advanced)
- personalized take-home tasks & resources
- 45-90min sessions, up to 6hrs/day on request
Availability:
- 4:00-18:00 UTC on workdays
- irregular on weekends
- last minute or late night sessions on request (email matei@copot.eu)
Technologies:
- JavaScript: ESNext, NodeJS/Deno, TypeScript, React, Vue, NodeMCU, & more
- Front-end Web Dev: HTML5, CSS3, responsive design, PWAs, SPAs, & more
- Back-end Web Dev: Express/NextJS APIs, Python, AWS, Docker, SQL, PHP, & more
- App Dev: Mac/Linux & Android, Electron, Expo, Python, Stripe, UX, & more
- others: always curious about other technologies, e.g. haskell, ruby, WASM, WebGL...
= Why me?
I'm typically paid €100/hr by top companies, so the lower rate here means you're getting top-tier expertise at an accessible price. I enjoy mentoring because it brings variety and a more collaborative and relaxed dynamic.
I have a proven track record of guiding learners from zero experience to landing high-paying jobs. My teaching adapts to your pace and goals: you'll always get honest, actionable advice, including what's realistic and what's not.
If you're serious about growing your skills or career in tech, I'd be glad to support your journey.
Hi,
I’m a front-end developer with 14+ years of experience, specializing in large-scale websites, complex front-end architectures, and advanced yet performant animations.
My work focuses on:
* high-performance, SEO-friendly front ends
* animation systems that enhance UX without hurting speed
* maintainable codebases that scale to hundreds of pages and long-term teams
---
## Selected Projects & Contributions
**payall.com**
*Role:* Front-end development, animation, performance
*Stack:* Next.js, Contentful
* Built a highly animated marketing site with a strong focus on performance and responsiveness
**mirakl.com**
*Role:* Front-end development
*Stack:* Gatsby, headless CMS
* Clean, restrained animation work on a large enterprise website
**ravio.com**
*Role:* Front-end development (site + web app)
*Stack:* Next.js
* Implemented subtle, UX-driven animations across both marketing and product surfaces
**[pov.camera](https://pov.camera)**
*Role:* Front-end development, architecture, performance
*Stack:* Nuxt, Vue 3
* Pixel-perfect, SEO-optimized site and multiple Vue 3 web applications
* Heavy focus on subtle, GPU-friendly animations
**majority.com**
*Role:* Front-end development
*Stack:* Nuxt
* Built a simple, fast UI on top of a very complex underlying infrastructure
**nexford.edu**
*Role:* Front-end development, integrations
*Stack:* Gatsby, Contentful, HubSpot
* Implemented advanced HubSpot integrations across a large content-driven site
**[language.work](language.work)**
*Role:* Front-end development, performance optimization
*Stack:* Next.js, headless CMS
* Performance-first build for a content-heavy platform
**thebcms.com**
*Role:* Front-end development, architecture
*Stack:* Next.js, headless CMS
* Clean, maintainable codebase with subtle motion and strong DX
**videotoflip.com**
*Role:* Full-stack (front end + backend architecture)
*Stack:* Next.js, Tailwind, Node.js, FFmpeg
* Built a video-processing pipeline with FFmpeg and a fast, conversion-focused frontend
**pinkerton.com**
*Role:* Front-end development, custom features
*Stack:* Gatsby, custom headless CMS
* 800+ pages, complex content modeling, and extensive custom functionality
**[okbye.momcilo.com](okbye.momcilo.com)**
*Role:* Design & development
*Stack:* TypeScript, HTML, SCSS (no frameworks)
* Built from scratch to maximize control, performance, and animation precision
**natuera.com**
*Role:* Front-end development, animation, performance
*Stack:* Nuxt, headless Shopify
* Heavy animation work combined with aggressive speed optimizations
---
## Clients
I’ve worked with teams at **NASA, Coca-Cola, HBO, Pornhub, Gucci, Warner Bros**, and others.
---
## Teaching & Workshops
Alongside client work, I teach creative programming and run workshops internationally, focusing on:
* animation systems
* creative front-end engineering
* performance-conscious visual design
---
If you’re looking for someone who can handle complex front-end problems while keeping things fast, clean, and maintainable, I’m happy to help.
Best,
Mo
I'm a front-end developer with over 14 years of experience, including managing a team and company-wide recruitment and training programs for web developers. I specialize in frontend architecture design and Next.js implementation.
I'm very proficient at debugging code, as well as finding a way to explain complex problems in simple terms.
Hello! I specialize in responsive, inclusive user interfaces using semantic HTML, CSS focused on the cascade, and component-based Javascript. I incorporate thoughtful user experiences with the following principles: accessibility, progressive enhancement, SEO and fast performance. I enjoy working closely with designers to create systematic, component based designs, define design patterns, and produce style guides. I am regularly working to improve my experience, whether on the full-stack of technology or the front-end.
I am a full-stack software engineer with over seven years of experience building and managing web applications. Passionate about solving real-world challenges through code, I specialize in developing scalable, efficient, and user-friendly solutions. My expertise spans multiple technologies, and I am committed to continuous learning to stay ahead in the ever-evolving tech landscape.
Technical Expertise
Frontend Development
Proficient in HTML, CSS, JavaScript, TypeScript, and modern frameworks such as React.js, Redux, Next.js, and React Native. Experienced with UI libraries like Bootstrap, Material UI, Tailwind CSS, Semantic UI, and Styled Components.
Backend Development
Skilled in Node.js, NestJS, Express.js, Python, and Django, designing and implementing powerful backend systems that ensure performance and scalability.
Mobile Development
Experienced in React Native and Expo, crafting responsive and intuitive mobile applications.
Databases
Proficient in MongoDB, MySQL, PostgreSQL, and GridDB, ensuring efficient and well-structured data storage solutions.
CMS & No-Code Solutions
Capable of developing and customizing web solutions using WordPress and Wix.
APIs & Development Tools
Well-versed in RESTful APIs, GraphQL, authentication (JWT, Passport.js), file handling (Multer, Cloudinary), email services (Nodemailer), testing (Jest), version control (Git, GitHub), and payment gateway integration (Paystack API).
Technical Writing Experience
Beyond software development, I have over six years of general writing experience, including three years focused on technical content creation. I have collaborated with tech companies such as Cloudinary and Bunzz, producing clear and engaging content on topics like blockchain, video streaming, and software development. My expertise includes writing API documentation, user guides, FAQs, knowledge base articles, and technical blogs, ensuring complex concepts are accessible to diverse audiences.
Work Ethic & Collaboration
I am a detail-oriented, responsible, and reliable professional with excellent communication and time management skills. I thrive in collaborative environments and am always open to learning and adapting to new challenges.
Let’s Connect
If you're looking for a skilled full-stack developer or an experienced technical writer, I’d love to collaborate. Feel free to reach out for a discussion—I’m available for chat or video calls and respond promptly to inquiries.
Looking forward to building exceptional solutions together!
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Frequently asked questions
How long do SCSS 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 SCSS 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 SCSS request on Codementor, check out our article.
How much does it cost to hire a freelance SCSS developer?
We don’t charge anything when you post a freelance hiring request for SCSS 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 SCSS developers different?
We do a comprehensive technical and communications screen of all SCSS 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 SCSS 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 SCSS 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.