Dawid Kuczek - Full Stack Developer

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Gdynia, Poland

Experience

Jul 2024 - Present

1 year 1 month

Full 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 2023 - Feb 2025

2 years 2 months

Teamleader / 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 months

Full 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 - Present

3 years 6 months

Opole, Poland

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 - Oct 2022

9 months

Full 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.

Jul 2021 - Aug 2021

2 months

Frontend 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 2021 - Feb 2022

1 year 2 months

Bielefeld, Germany

Frontend Developer

Comspace GmbH & Co. KG

Jul 2019 - Nov 2020

1 year 5 months

Full 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 years 6 months

Bielefeld, Germany

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.

May 2018 - Jul 2019

1 year 3 months

Full 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.

Summary

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.

Languages

Polish

Native

German

Advanced

English

Advanced

Education

Sep 2018 - Jan 2021