Available to hire
Result-driven Senior Full-Stack Software Engineer passionate about solving complex problems in fast-paced, agile environments. Experienced in designing scalable microservices, building modern frontend applications, and deploying cloud-native systems.
Strong collaborator and remote team-player with a track record of leading engineers, improving reliability through testing, and delivering high-performance, secure solutions across healthcare, SaaS, and gaming platforms.
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Intermediate
Language
English
Advanced
Work Experience
Senior Full-Stack Software Engineer at IBM
March 1, 2023 - May 1, 2026Led a team of 6 engineers to develop and maintain an AI-driven healthcare platform for automated diagnostics and prescriptions using real-time ECG data analysis. Designed and built an HL7/FHIR-integrated Revenue Cycle Management system with HIPAA-compliant handling to improve billing efficiency and claim processing. Migrated a legacy monolith to a microservices architecture using patterns such as Strangler, Database-per-Service, API Gateway, Saga, and CQRS. Built Node.js (NestJS) and Python (FastAPI) microservices with RabbitMQ for inter-service communication. Implemented GraphQL APIs (Apollo Server/Graphene) for efficient frontend integration, and created an authentication microservice with OIDC/SSO/JWT and 2FA (Email OTP) deployed to AWS Lambda with API Gateway and AWS CDK. Designed scalable WebSocket services using Redis Pub/Sub, and delivered a React/Next.js frontend with SSR/SSG/ISR, TypeScript, Redux Toolkit, Tailwind, and Storybook. Added Jest/RTL test coverage (>80%), defined/d
AWS Engineer at AWS
February 1, 2022 - January 1, 2023Designed and deployed scalable serverless architectures for SaaS B2B and B2C applications using AWS Lambda, API Gateway, AWS AppSync, and DynamoDB with IAM-based secure access. Managed infrastructure via AWS CDK and CloudFormation across environments. Optimized performance and cost by reducing Lambda cold starts, using SQS/SNS for asynchronous processing, and applying caching strategies with DAX and Redis. Collaborated with cross-functional teams to deliver scalable solutions and streamline workflows in fast-paced settings.
Full Stack Developer at 10pearls
July 1, 2015 - December 1, 2021Developed an iGaming platform integrating cryptocurrency payments via Web3 APIs to support secure wallet operations and real-time gameplay features. Managed Firestore and Firebase Authentication on GCP to optimize performance and secure user authentication. Built high-performance REST APIs with Node.js (Express) and Python (Django/Flask), using Sequelize/TypeORM and Django ORM for efficient SQL data management. Improved frontend performance through code-splitting and lazy loading, achieving a 40% page-load improvement and better Core Web Vitals. Applied TDD/BDD practices integrated into CI/CD for reliable deployments and 80%+ test coverage. Integrated Elasticsearch with MongoDB for faster search via indexing and query tuning with real-time synchronization. Configured Cloudflare and Nginx for caching, DDoS protection, load balancing, and reverse proxy setup. Collaborated with DevOps to optimize CI/CD using GitHub Actions and Jenkins.
Junior Software Developer at itCraft
October 1, 2013 - March 1, 2015Implemented backend functionality in Python and Java, improving data processing efficiency by 25% using OOP and SOLID principles plus algorithmic optimizations. Built responsive UI using HTML5, CSS3, Bootstrap, jQuery, and SASS/SCSS; worked with AngularJS and React class components. Gained hands-on experience with AWS and GCP services (EC2, S3, Lambda, Cloud Functions, BigQuery, Firestore). Conducted peer code reviews, resolving 15+ issues per sprint to improve code quality and maintainability. Participated in agile teamwork and cross-functional problem solving in fast-paced development environments.
Education
Bachelor's Degree, Computer Science at Warsaw University of Technology
April 1, 2009 - September 1, 2013Qualifications
Industry Experience
Healthcare, Software & Internet, Gaming, Professional Services, Computers & Electronics
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Intermediate
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