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Always learning and always yearning, I sincerely believe that we can achieve greater heights by collaborating on our problems. I love to be involved with technical communities in different capacities and enjoy solving issues. I have had more than 50 mentoring sessions on HackHands ( http://www.hackhands.com/hiren ). Currently I run my own business, which is into mobile apps and websites.
**Experienced Full Stack Developer Architecting Scalable Solutions** With over **20 years** of experience in software development, I have built and led innovative web applications across multiple industries, including **SaaS**, **e-commerce, real estate, telecommunications, and temporary accommodation rental**. My expertise spans **frontend and backend development**, software architecture, and leadership roles such as team lead, project manager, and founder. I specialize in **PHP, NodeJS, ReactJS, NextJS, VueJS, NuxtJS**, and database management with **MySQL, PostgreSQL, MongoDB, MariaDB, SQL Server, and Oracle**. I also have **deep expertise** in cloud computing (**AWS, Docker**) and system scalability. Holding a **college degree in System Analysis**, I thrive in **fast-paced environments**, solving complex technical challenges, optimizing performance, and mentoring teams to deliver high-impact solutions. Technologies summary: **AWS, Docker, Javascript, Typescript, NodeJS, ReactJS, NextJS, VueJS, NuxtJS, CSS, HTML5, PHP, Laravel, CodeIgniter, MongoDB, MariaDB, MySQL, SQL Server, PostgreSQL, Oracle**.
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.
Most of my work for customers is around solving complex business problems through people and technology. Expertise in Front-end user interfaces, interactions through back-end APIs and servers, middleware, data storage and integration Strong experience in ASP.NET Core development.
I am a software engineering leader with over 10 years of experience building and scaling full-stack web and mobile applications. I have worked across backend, frontend, mobile, cloud, and DevOps, progressing from software engineer to CTO-level roles. My experience includes Python, Django, NodeJS, React.js React Native, Vue.js, Ruby on Rails, Java EE, Asp.NET, Elixir, and Wordpress, along with databases like Elasticsearch and Cassandra. I have designed and deployed scalable systems on AWS using Docker, CI/CD pipelines, and modern DevOps architecture. I enjoy leading teams, designing system architecture, and delivering reliable, production-ready software solutions for complex business needs.
I started my career as a web developer 16 years ago. I like challenges where I can use my skills to develop outstanding web applications in look, performance, and efficiency. I am specialized in Front-End and back-end web technologies. For more details about technologies I know, see the expertise section below. I can help you with: • New projects or features • Front-End/Back-End development • Mentoring • UX/UI Design • Bug fixes and issue resolving If I missed something you need help with, please drop me a message and I will look for a solution.
Superb C++, Haskell, Scala, FP, and OO design chops. Expert at designing compilers, type systems, frameworks, and embedded programming languages. Strong background in pure mathematics, computer science, functional programming, and category theory.
Experienced Software Engineer specializing in distributed systems and scalable architectures. Skilled in React, Next.js, TypeScript, Golang, and backend scheduling systems. Passionate about backend performance optimization and open-source contributions, with contributions to dicedb and open-feature/flagd.
Senior Software Engineer with 8 years of experience building backend applications and enterprise software. Experienced in Java, Spring Boot, Microservices, REST APIs, System Design, and Distributed Systems. Worked on scalable applications, performance optimization, production support, and software architecture. Currently working at Microsoft, contributing to the WPF framework and leading initiatives around modernization, automation, accessibility, and performance improvements. Previously worked at Siemens Healthineers building backend services and APIs for medical imaging systems. Skilled in designing reliable, scalable, and maintainable software solutions while collaborating with cross-functional teams. Core expertise: • Distributed Systems & Microservices • System Design (HLD + LLD) • Java, Spring Boot, C#, .NET, [ASP.NET](http://asp.net/) • REST APIs & Backend Engineering • Performance Optimization & Scalability • Concurrency, Reliability, and Production Debugging • CI/CD and Release Engineering Conducted 50+ design/code reviews and contributed to engineering best practices across teams.
I'm a fractional CTO and tech lead based in Munich with over 15 years of experience across the full stack. I started as a self-taught coder writing mIRC scripts and freelance tools, then moved through agencies and product teams in Belgium and Portugal before becoming CTO of BEPRO Network, where I built the technical foundation for a Web3 platform and stayed on through its acquisition by TAIKAI. As CTO, I led the product lifecycle end to end, from roadmap and architecture decisions to mentoring engineers and running agile delivery across a distributed team. I care about clear communication with founders and stakeholders just as much as the technical work itself. Today I split my time between fractional CTO engagements and hands on development. Recent projects include diagnosing and fixing critical performance issues for a SaaS product (cutting load times from 5 seconds to under 1 second), leading Stripe payment integration, and rescuing a stalled early stage MVP and shipping it to production. I also build custom Claude AI skills and internal AI tooling, and I'm currently working across .NET, TypeScript, Terraform and GCP. What I bring: strong full stack engineering (TypeScript, Node.js, React, .NET), cloud architecture (GCP, AWS), hands on team leadership, and the ability to move between strategic planning and writing code myself. I'm comfortable owning a technical roadmap or just shipping features, depending on what the project needs. Available now for fractional CTO roles and hands on contract work, remote first.
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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 Optimization 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 Optimization request on Codementor, check out our article.
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We do a comprehensive technical and communications screen of all Performance Optimization 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 Optimization developers’ user satisfaction rates.
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