07/08/2026 updated
100 % available
Senior Software Engineer | React, NextJS, TypeScript
Poznan, Poland
Only remote
Master of Power Engineering (Renewable Energy), Cracow University of Technology (2017-2018)JavaScriptIonicNext.jsTypeScriptReact.jsWebpackMaterial UIGraphQLReact NativeFront End Software Development
React & TypeScript Development
Expertise in building scalable, component-based UIs using React and TypeScript, including reusable component libraries and cross-platform web and mobile experiences with React Native.
Testing & Quality Assurance
Strong background in test-driven quality with Jest, Testing Library, Cypress, and TestCafe, achieving 90%+ test coverage and reducing regressions in enterprise-level applications.
GraphQL & State Management
Proficient in data fetching and state management using GraphQL, Redux, MobX, and Zustand within modern frontend architectures.
CI/CD & DevOps Tooling
Experience with Git, CI/CD pipelines, Webpack, and Agile/Scrum methodologies to support continuous delivery workflows.
Styling & UI Frameworks
Hands-on use of SCSS, Tailwind CSS, and Material-UI to implement consistent, high-quality user interfaces from Figma designs.
Automation & AI Integrations
Experience integrating AI/LLM APIs and automating workflows using n8n, Zapier, and REST APIs.
Mobile Development
Development of cross-platform mobile applications using React Native (iOS & Android) and Ionic for enterprise and consumer-facing products.
Next.js & JavaScript
Proficiency in Next.js and JavaScript for building performant, server-rendered and static web applications.
Storybook
Use of Storybook for developing, documenting, and testing UI components in isolation within component-driven development workflows.
Expertise in building scalable, component-based UIs using React and TypeScript, including reusable component libraries and cross-platform web and mobile experiences with React Native.
Testing & Quality Assurance
Strong background in test-driven quality with Jest, Testing Library, Cypress, and TestCafe, achieving 90%+ test coverage and reducing regressions in enterprise-level applications.
GraphQL & State Management
Proficient in data fetching and state management using GraphQL, Redux, MobX, and Zustand within modern frontend architectures.
CI/CD & DevOps Tooling
Experience with Git, CI/CD pipelines, Webpack, and Agile/Scrum methodologies to support continuous delivery workflows.
Styling & UI Frameworks
Hands-on use of SCSS, Tailwind CSS, and Material-UI to implement consistent, high-quality user interfaces from Figma designs.
Automation & AI Integrations
Experience integrating AI/LLM APIs and automating workflows using n8n, Zapier, and REST APIs.
Mobile Development
Development of cross-platform mobile applications using React Native (iOS & Android) and Ionic for enterprise and consumer-facing products.
Next.js & JavaScript
Proficiency in Next.js and JavaScript for building performant, server-rendered and static web applications.
Storybook
Use of Storybook for developing, documenting, and testing UI components in isolation within component-driven development workflows.
Experience
Professional experience5 - 10 years
Freelancer since2023
Languages
GermanGoodEnglishFluentPolishNative speaker
Project history
Owned end-to-end delivery of features in a customer-facing product, from design collaboration through production and post-release iteration. Built scalable, component-based UI in React and TypeScript. Partnered with UX designers to turn Figma designs into reusable components and folded stakeholder feedback into the roadmap.
Delivered cross-platform mobile and web experiences with React Native and React. Built a reusable component library from Figma designs, improving UI consistency and delivery speed. Presented features to cross-functional stakeholders in sprint reviews, aligning delivery with product goals.
Built front-end and mobile applications in React and React Native for an enterprise product used by international customers. Drove test quality with Jest and Testing Library, reaching 90%+ coverage and reducing regressions. Led live demos for international stakeholders, translating technical work into clear business value.