08/19/2026 updated
100 % available
Senior Full Stack Engineer | React | Node.js | AI/ML | Cloud
Bielsko-biała, Poland
Worldwide
Bachelor's Degree in Computer Science, The University of Texas at AustinPHPCloud EngineeringApache CloudStackDjangoNode.jsAzure Machine LearningNext.jsReact.jsGenerative AIGoogle FirebaseBackendGitLabFull Stack DevelopmentGraphQLMachine Learning Operations
Full Stack Web Development
Over 8 years of experience designing, developing, and maintaining high-performance web and mobile applications using modern JavaScript frameworks such as React, React Native, Vue.js, Angular, and Next.js on the frontend, combined with Node.js, PHP, and Python on the backend.
AI & Machine Learning Integration
Expertise in building robust AI applications using Langchain, LLM, OpenAI, Azure AI, AWS Bedrock, Embeddings, RAG, NLP, Generative AI, Vector Databases, RASA, LLAMA, GPT, and Whisper, including the implementation of AI Chatbot workflows.
Cloud Deployment & CI/CD Pipelines
Extensive knowledge in deploying and managing applications on cloud platforms such as AWS, Azure, and GCP, as well as building and maintaining CI/CD pipelines using Jenkins, Docker, Kubernetes, GitHub Actions, and AWS Code Pipeline.
RESTful API & GraphQL Development
Strong experience integrating RESTful APIs and GraphQL endpoints, ensuring seamless data flow and dynamic user experiences, including designing and developing APIs using Django, FastAPI, and Node.js.
Database Management
Proficiency with a wide range of databases including SQL, MySQL, PostgreSQL, SQLite, NoSQL, MongoDB, Firebase, Supabase, AWS DynamoDB, and AWS RDS, covering both relational and non-relational database solutions.
CSS Frameworks & Responsive UI Design
Strong experience with advanced CSS frameworks and libraries such as Tailwind CSS, Material UI, Bootstrap, SASS, SCSS, LESS, and Styled Components to ensure responsive and visually appealing interfaces.
Version Control & Agile Methodologies
Strong command of version control using Git, GitHub, and GitLab, combined with practical application of Agile, Scrum, Kanban, TDD, BDD, DDD, Clean Code, MVC, and Design Patterns in collaborative development environments.
Testing & Quality Assurance
Experience implementing automated testing for web applications using Jest, Enzyme, and Cypress for unit, integration, and end-to-end testing, ensuring high code quality and reliability across projects.
Over 8 years of experience designing, developing, and maintaining high-performance web and mobile applications using modern JavaScript frameworks such as React, React Native, Vue.js, Angular, and Next.js on the frontend, combined with Node.js, PHP, and Python on the backend.
AI & Machine Learning Integration
Expertise in building robust AI applications using Langchain, LLM, OpenAI, Azure AI, AWS Bedrock, Embeddings, RAG, NLP, Generative AI, Vector Databases, RASA, LLAMA, GPT, and Whisper, including the implementation of AI Chatbot workflows.
Cloud Deployment & CI/CD Pipelines
Extensive knowledge in deploying and managing applications on cloud platforms such as AWS, Azure, and GCP, as well as building and maintaining CI/CD pipelines using Jenkins, Docker, Kubernetes, GitHub Actions, and AWS Code Pipeline.
RESTful API & GraphQL Development
Strong experience integrating RESTful APIs and GraphQL endpoints, ensuring seamless data flow and dynamic user experiences, including designing and developing APIs using Django, FastAPI, and Node.js.
Database Management
Proficiency with a wide range of databases including SQL, MySQL, PostgreSQL, SQLite, NoSQL, MongoDB, Firebase, Supabase, AWS DynamoDB, and AWS RDS, covering both relational and non-relational database solutions.
CSS Frameworks & Responsive UI Design
Strong experience with advanced CSS frameworks and libraries such as Tailwind CSS, Material UI, Bootstrap, SASS, SCSS, LESS, and Styled Components to ensure responsive and visually appealing interfaces.
Version Control & Agile Methodologies
Strong command of version control using Git, GitHub, and GitLab, combined with practical application of Agile, Scrum, Kanban, TDD, BDD, DDD, Clean Code, MVC, and Design Patterns in collaborative development environments.
Testing & Quality Assurance
Experience implementing automated testing for web applications using Jest, Enzyme, and Cypress for unit, integration, and end-to-end testing, ensuring high code quality and reliability across projects.
Experience
Professional experience10+ years
Freelancer since2014
Languages
EnglishNative speaker
Project history
Developed a modern web application and admin panel using React.js, TypeScript, and Tailwind CSS. Built a social media web application with React.js, Redux, and Firebase for real-time database updates. Developed a cross-platform mobile application using React Native and Expo. Implemented AI Chatbot workflows using LLM, Langchain, Pinecone Vector Database, and Azure OpenAI. Designed RESTful APIs using Django, optimized CI/CD pipelines with GitHub Actions and Jenkins, and leveraged Agile/Scrum methodologies.
Developed the Platform Insights application, an in-house platform for Uber teams to discover and understand data related to datasets, dashboards, and business metrics. Employed Fusion.js and Vue.js for frontend development, implemented Vuex for state management, designed RESTful APIs using FastAPI, and conducted rigorous testing using Jest and Enzyme.
Utilized React, Next.js, and Redux to architect a consumer dashboard and custom loan origination system. Employed Jest, Enzyme, and Cypress for testing. Integrated Google Tag Manager and FullStory for website conversion tracking. Designed and implemented a CI/CD pipeline using Jenkins, GitHub Actions, and Travis CI.