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Hey there! I’m a Full Stack Developer with 5 years of experience, including over a year as a sub-team lead at Hemmersbach. I love building cool, user-friendly web apps and working with React, TypeScript, and Redux on the frontend, while also diving into Node.js (Express), and MongoDB on the backend. I’ve had the chance to mentor teammates, plan sprints, and handle code reviews, making sure everything runs smoothly in an Agile setup. Problem-solving and collaboration are what keep me going, and I’m always eager to learn new tech and improve my skills. Besides my full-time work, I’m also developing a mobile app with some friends. I’ve taken full ownership of the backend, building it with Express.js, MongoDB, and Mongoose, while collaborating on the React Native (Expo) frontend. It’s been an exciting challenge that has pushed me to refine my backend skills and work in a small, motivated team. 🔹 Tech stack: React, React Native (Expo), TypeScript, JavaScript, Redux, Material-UI, SCSS/SASS, CSS, Node.js, Express, MongoDB (Mongoose), Laravel (PHP) 🔹 How I Work: Agile/Scrum, Git, clean code, teamwork, and a bit of coffee ☕ 🔹 Languages I Speak: Polish (native), English (C1)…Hey there! I’m a Full Stack Developer with 5 years of experience, including over a year as a sub-team lead at Hemmersbach. I love building cool, user-friendly web apps and working with React, TypeScript, and Redux on the frontend, while also diving into Node.js (Express), and MongoDB on the backend. I’ve had the chance to mentor teammates, plan sprints, and handle code reviews, making sure everything runs smoothly in an Agile setup. Problem-solving and collaboration are what keep me going, and I’m always eager to learn new tech and improve my skills. Besides my full-time work, I’m also developing a mobile app with some friends. I’ve taken full ownership of the backend, building it with Express.js, MongoDB, and Mongoose, while collaborating on the React Native (Expo) frontend. It’s been an exciting challenge that has pushed me to refine my backend skills and work in a small, motivated team. 🔹 Tech stack: React, React Native (Expo), TypeScript, JavaScript, Redux, Material-UI, SCSS/SASS, CSS, Node.js, Express, MongoDB (Mongoose), Laravel (PHP) 🔹 How I Work: Agile/Scrum, Git, clean code, teamwork, and a bit of coffee ☕ 🔹 Languages I Speak: Polish (native), English (C1)

Konrad Wnuk

Full Stack Developer, Front-End Developer, Web Developer, +1

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Hey there! I’m a Full Stack Developer with 5 years of experience, including over a year as a sub-team lead at Hemmersbach. I love building cool, user-friendly web apps and working with React, TypeScript, and Redux on the frontend, while also diving into Node.js (Express), and MongoDB on the backend. I’ve had the chance to mentor teammates, plan sprints, and handle code reviews, making sure everything runs smoothly in an Agile setup. Problem-solving and collaboration are what keep me going, and I’m always eager to learn new tech and improve my skills. Besides my full-time work, I’m also developing a mobile app with some friends. I’ve taken full ownership of the backend, building it with Express.js, MongoDB, and Mongoose, while collaborating on the React Native (Expo) frontend. It’s been an exciting challenge that has pushed me to refine my backend skills and work in a small, motivated team. 🔹 Tech stack: React, React Native (Expo), TypeScript, JavaScript, Redux, Material-UI, SCSS/SASS, CSS, Node.js, Express, MongoDB (Mongoose), Laravel (PHP) 🔹 How I Work: Agile/Scrum, Git, clean code, teamwork, and a bit of coffee ☕ 🔹 Languages I Speak: Polish (native), English (C1)…Hey there! I’m a Full Stack Developer with 5 years of experience, including over a year as a sub-team lead at Hemmersbach. I love building cool, user-friendly web apps and working with React, TypeScript, and Redux on the frontend, while also diving into Node.js (Express), and MongoDB on the backend. I’ve had the chance to mentor teammates, plan sprints, and handle code reviews, making sure everything runs smoothly in an Agile setup. Problem-solving and collaboration are what keep me going, and I’m always eager to learn new tech and improve my skills. Besides my full-time work, I’m also developing a mobile app with some friends. I’ve taken full ownership of the backend, building it with Express.js, MongoDB, and Mongoose, while collaborating on the React Native (Expo) frontend. It’s been an exciting challenge that has pushed me to refine my backend skills and work in a small, motivated team. 🔹 Tech stack: React, React Native (Expo), TypeScript, JavaScript, Redux, Material-UI, SCSS/SASS, CSS, Node.js, Express, MongoDB (Mongoose), Laravel (PHP) 🔹 How I Work: Agile/Scrum, Git, clean code, teamwork, and a bit of coffee ☕ 🔹 Languages I Speak: Polish (native), English (C1)

Available to hire

Hey there! I’m a Full Stack Developer with 5 years of experience, including over a year as a sub-team lead at Hemmersbach. I love building cool, user-friendly web apps and working with React, TypeScript, and Redux on the frontend, while also diving into Node.js (Express), and MongoDB on the backend.

I’ve had the chance to mentor teammates, plan sprints, and handle code reviews, making sure everything runs smoothly in an Agile setup. Problem-solving and collaboration are what keep me going, and I’m always eager to learn new tech and improve my skills.

Besides my full-time work, I’m also developing a mobile app with some friends. I’ve taken full ownership of the backend, building it with Express.js, MongoDB, and Mongoose, while collaborating on the React Native (Expo) frontend. It’s been an exciting challenge that has pushed me to refine my backend skills and work in a small, motivated team.

🔹 Tech stack: React, React Native (Expo), TypeScript, JavaScript, Redux, Material-UI, SCSS/SASS, CSS, Node.js, Express, MongoDB (Mongoose), Laravel (PHP)
🔹 How I Work: Agile/Scrum, Git, clean code, teamwork, and a bit of coffee ☕
🔹 Languages I Speak: Polish (native), English (C1)

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Polish

Fluent

English

Advanced

Work Experience

Full-Stack Developer at Hashcode Studio

November 1, 2024 - Present

Engineered the complete backend for Catch Me — a social scheduling mobile app for students — from initial setup through endpoint security and testing, using Node.js, Express.js, MongoDB, and Mongoose; built client-facing responsive frontend with Next.js (SSR) and SEO best practices; implemented RESTful APIs for friend management, events, and schedule visibility; developed a custom calendar file parser enabling import of university timetables; maintained core features across a 5-person team and ensured code quality and security.

Software Developer & Sub-Team Lead at Hemmersbach

May 20, 2022 - Present

Led a sub-team of 7 developers, balancing hands-on full-stack development with technical oversight and mentorship; built and maintained complex features for an enterprise IT service delivery platform used across 190+ countries using React, TypeScript, and Redux Toolkit; developed backend features and REST APIs using Laravel (PHP) with PHPUnit test coverage; defined frontend architecture strategy and guided implementation of complex UI features; conducted code reviews, enforced quality standards, and reduced bugs by adopting new technologies.