09/29/2026 updated
100 % available
Senior Full Stack Engineer.
poznan, Poland
Only remote
Bachelor's Degree in Computer ScienceAbout me
AI-savvy Full-Stack Engineer with 9+ years of experience building revenue-critical web platforms across the FastAPI/Python backend, Next.js/TypeScript front end, and PostgreSQL.
LangChainSupabaseFlutterAndroid (Software)Handheld ComputerPython (Programming Language)PostgreSQLMongoDBMySQLQuickBooks (Software)Next.jsShopifyTypeScriptReact.jsCypress (Programming Language)
Flutter & Dart Mobile Development
6+ years of experience designing, building, and publishing cross-platform mobile applications using Flutter and Dart for both iOS and Android, including App Store and Google Play Store deployments.
E-Commerce & Headless Architecture
Extensive hands-on experience orchestrating headless commerce architectures leveraging the Shopify Storefront API, Shopify Admin API, and complex GraphQL endpoints to build dynamic product galleries and real-time checkout systems.
API Integration & GraphQL
Robust API integration strategy leveraging GraphQL Apollo Client and optimized RESTful web services to synchronize real-time global databases, third-party payment gateways, and content frameworks.
State Management
Proficiency across production scales using reactive paradigms including Bloc, Riverpod, Provider, Redux, and Vuex to ensure highly optimized UI rendering loops.
DevOps & CI/CD
Building CI/CD pipelines via GitHub Actions, Docker, Kubernetes, Fastlane, and Fly.io for scalable cloud distribution across AWS and custom backend instances.
Mobile Core Technologies
Deep expertise in iOS & Android SDK, Swift, Kotlin, React Native, and Mobile Architecture for building high-performance native and cross-platform applications.
Languages & Web Technologies
Proficiency in JavaScript, TypeScript, Python, PHP, HTML5, CSS3, Tailwind CSS, and Material UI for building responsive and scalable web and mobile interfaces.
Backend & Database Systems
Experience designing performance-critical backend RESTful pipelines using FastAPI and Python, as well as robust content management backends utilizing MySQL and custom PHP systems.
Frontend Frameworks
Experience building user application dashboards using React, Next.js, Redux, Vue.js, and Fusion.js framework protocols inside mono-repo distributions.
6+ years of experience designing, building, and publishing cross-platform mobile applications using Flutter and Dart for both iOS and Android, including App Store and Google Play Store deployments.
E-Commerce & Headless Architecture
Extensive hands-on experience orchestrating headless commerce architectures leveraging the Shopify Storefront API, Shopify Admin API, and complex GraphQL endpoints to build dynamic product galleries and real-time checkout systems.
API Integration & GraphQL
Robust API integration strategy leveraging GraphQL Apollo Client and optimized RESTful web services to synchronize real-time global databases, third-party payment gateways, and content frameworks.
State Management
Proficiency across production scales using reactive paradigms including Bloc, Riverpod, Provider, Redux, and Vuex to ensure highly optimized UI rendering loops.
DevOps & CI/CD
Building CI/CD pipelines via GitHub Actions, Docker, Kubernetes, Fastlane, and Fly.io for scalable cloud distribution across AWS and custom backend instances.
Mobile Core Technologies
Deep expertise in iOS & Android SDK, Swift, Kotlin, React Native, and Mobile Architecture for building high-performance native and cross-platform applications.
Languages & Web Technologies
Proficiency in JavaScript, TypeScript, Python, PHP, HTML5, CSS3, Tailwind CSS, and Material UI for building responsive and scalable web and mobile interfaces.
Backend & Database Systems
Experience designing performance-critical backend RESTful pipelines using FastAPI and Python, as well as robust content management backends utilizing MySQL and custom PHP systems.
Frontend Frameworks
Experience building user application dashboards using React, Next.js, Redux, Vue.js, and Fusion.js framework protocols inside mono-repo distributions.
Experience
Professional experience5 - 10 years
Freelancer since2016
Languages
EnglishFluent
Project history
Architected and deployed a multi-platform Flutter & Dart mobile application featuring unified e-commerce experiences and deep third-party web service bindings. Engineered a headless retail interface utilizing the Shopify Storefront API and Shopify Admin API. Implemented high-scale state governance paradigms utilizing Bloc and Riverpod architecture styles. Built tailored web administration modules integrating GraphQL Client utilities within a Strapi-powered database framework. Orchestrated cross-platform deployment matrices for App Store and Google Play submission pipelines using Docker and Fly.io workflows.
Developed highly scalable mobile commerce extensions using Flutter integrated with heavy cloud networks, employing custom Provider state management structures for real-time asset tracking. Designed and executed high-performance data fetching pipelines utilizing GraphQL Apollo client layers alongside specialized Django backend REST engines to achieve sub-100ms processing cycles. Managed complete App Store and Google Play publishing architectures. Introduced continuous integration scripts leveraging Git and GitLab pipelines to automate multi-flavor app distributions.
Contributed core mechanics to the Platform Insights data orchestration space, engineering high-speed front-end architectures using Vue.js and Fusion.js framework protocols inside mono-repo distributions. Designed performance-critical backend RESTful pipelines using FastAPI and Python to handle enterprise-level internal metric mapping algorithms. Enforced comprehensive quality control measures via multi-tier testing workflows including Jest and automated structural verification scripts.