Dawid (Marian) Kuczek
Full Stack Developer
Erfahrungen
Juli 2024 - Bis heute
1 Jahr 1 MonateFull Stack Developer
Taskcards
- Cross-platform digital learning app used by educators in Germany and Canada. Re-architected from a monolithic Vue 2 + Express stack to a modern microservices-based architecture built with React (Next.js) and NestJS, connected via tRPC for type-safe API calls. Integrated with the headless CMS Payload to manage dynamic educational content and streamline course creation. Introduced new features through prototype iterations and ensured full accessibility compliance with German BITV 2.0.
Jan. 2022 - Feb. 2025
2 Jahren 2 MonatenTeamleader / Full Stack Developer
Synlab Health For You
- Greenfield healthcare project: B2C platform for blood test booking, lab visit scheduling, doctor result view with AI opinions. Technologies: .NET Core with C#, React (Next.js), Sitecore headless CMS with JSS and OrderCloud.
- (From 07.2024 part-time for maintenance only).
Apr. 2022 - Jan. 2023
10 MonatenFull Stack Developer
Lotto Hessen
- Led the migration from Freemarker templates to a React.js-based architecture, resulting in a modernized UI and improved performance across multiple lottery games. Improved components and page structures in headless Imperia CMS. Enhanced the purchase flow and accessibility for users with disabilities.
Feb. 2022 - Bis heute
3 Jahren 6 Monaten Opole, Polen
Full Stack Developer
Haajt Dawid Kuczek
- Contract - Full Stack Developer– eLearning sector (Taskcards): Migration of a legacy project, design relaunch, and implementation of a modern tech stack. The application serves as a digital educational board used primarily by schools.
- Development using Node.js (NestJS) + tRPC (Backend) and React (Next.js) (Frontend).
- Implementation of new design from Figma using TailwindCSS, SVG, and shadcn/ui.
- AI-assisted unit test generation accelerated test development by ~35%.
- Strong focus on accessibility (WCAG) and compliance with German digital accessibility standards (BITV 2.0).
- Writing unit, integration, and E2E tests using Jest and Selenium.
- Git (GitLab) workflows: cherry-picking, rebase, MR reviews.
- Contract – Full Stack Developer - Healthcare sector (Synlab Group): Development of a new B2C application from scratch, integrating local lab systems. Project also included a doctor’s portal for reviewing lab results. Team Leader of the Frontend team.
- Backend in C# .NET, frontend in React (Next.js) with Azure Cloud.
- Building and extending REST APIs, headless CMS Sitecore with JSS and OrderCloud.
- Integration with internal lab systems (BCS Priamo, Appheals) compliant with Italian data protection laws, enabling real-time results fetching and display.
- UI implementation based on Figma, close cooperation with UX/UI team.
- Use of SVGs and creation of advanced lab result graphs.
- Writing unit tests with Jest.
- Analytics tool integration (Google Analytics, Mixpanel).
- Contract – Full Stack Developer - Lottery sector (Lotto): Development and maintenance of the company’s applications and portals (e.g., Eurojackpot, Keno, Genau). Projects involved tech migrations and integration with existing architecture. Applications support millions of users monthly, requiring high availability, performance optimization, and scalable architecture.
- Java 17 (Spring Boot) and React (JavaScript/TypeScript) development.
- Migration from Vue 2 to React with Next.js, Spring Boot backend integration.
- Creating/extending REST APIs, deployment setup (Maven, Vite).
- Writing unit, integration, and E2E tests (Cypress, Jest).
Feb. 2022 - Okt. 2022
9 MonatenFull Stack Developer
Lotto Bayern
- Relaunched the website featuring all Lotto games. Contributed to feature development and landing pages with Imperia headless CMS, optimized code for the Freemarker template engine, and configured Webpack. Migrated the frontend from Vue 2 to React with Next.js. Improved accessibility and user experience for people with disabilities.
Juli 2021 - Aug. 2021
2 MonatenFrontend Developer
Wahl-o-matin
- Political matching site promoting equality, LGBTQIA+, and anti-racism values. Based on open-source Mat-O-Wahl framework using React + Next.js for the frontend and Nest.js with headless DatoCMS for the backend.
Jan. 2020 - Feb. 2022
1 Jahr 2 Monaten Bielefeld, Deutschland
Frontend Developer
Comspace GmbH & Co. KG
Juli 2019 - Nov. 2020
1 Jahr 5 MonatenFull Stack Developer
Nolte Küchen
- Migrated from a Razor template to a modern React.js implementation using Sitecore JSS. Delivered a full UI redesign based on Figma prototypes, developed in close cooperation with an external design team.
Aug. 2018 - Jan. 2021
2 Jahren 6 Monaten Bielefeld, Deutschland
Full Stack Developer
Comspace GmbH & Co. KG
- Development and modification of functionalities/modules in .NET and JavaScript (vanilla JS, Node.js, Vue.js, React.js, Next.js, Nuxt.js, Knockout.js, jQuery), code reviews.
- Use and configuration of bundlers like Gulp and Webpack.
- CMS configuration and administration: Sitecore and Storyblok.
- Writing GraphQL queries.
- Using templating systems: Handlebars, Nunjucks, Razor.
- Deployment using TeamCity and Jenkins.
Mai 2018 - Juli 2019
1 Jahr 3 MonatenFull Stack Developer
Farmerek
- Informational e-commerce-like site. Self-built from scratch including server setup and SEO audits. Based on Nuxt.js and Storyblok headless CMS.
Zusammenfassung
Responsible Full Stack Developer and Team Leader. I have worked in international teams and for a German companies, which helped me develop strong soft skills. For over 2 years, I led a frontend team, collaborating closely with business stakeholders, architects, designers, and backend developers. I am eager to grow in modern technologies and leverage AI to automate the application development process.
Sprachen
Polnisch
Muttersprache
Deutsch
Verhandlungssicher
Englisch
Verhandlungssicher
Ausbildung
Sept. 2018 - Jan. 2021
Carl-Severing-Berufskolleg für Metall- und Elektrotechnik
Application Development · Computer Science · Bielefeld, Deutschland
Sept. 2015 - Mai 2018
Lüttfeld-Berufskolleg
IT Assistant · Computer Science · Lemgo, Deutschland
Zertifikate & Bescheinigungen
Sitecore® Professional Solution 9 Developer
Sitecore
Sitecore® Introduction to Experience Accelerator 9
Sitecore
Sitecore®: JSS Fundamentals 9.2
Sitecore
Ähnliche Freelancer
Entdecken Sie andere Experten mit ähnlichen Qualifikationen und Erfahrungen.