Designed and implemented scalable RESTful APIs in Node.js and Adonis.js for a high-traffic financial platform, handling around 50,000 daily API requests with low latency. Developed responsive web interfaces using React.js, TypeScript, and Material-UI, improving load times and user engagement across devices. Integrated backend services with AWS Lambda, S3, SQS, and API Gateway to enhance reliability and support near real-time data processing. Built automated unit, integration, and end-to-end tests with Jest and Cypress, achieving high coverage across core modules. Led code reviews and architectural discussions, mentoring a team of six developers to improve coding standards and reduce technical debt. Deployed containerized apps with Docker to OpenShift, enabling CI/CD and observability with Grafana and Prometheus dashboards. Optimized PostgreSQL and MongoDB queries, reducing average data retrieval time for complex reports.

Mid-Level Full Stack Developer at Luxoft

March 1, 2022 - October 27, 2025

Built integrations with partner distributors and internal tools using Node.js and PostgreSQL, processing over 200,000 transactions per month. Developed web features and dashboards with React.js, TypeScript, and Redux, improving user adoption and onboarding speed for clients. Designed database schemas, wrote complex SQL queries, and implemented data pipelines for real-time reporting and analytics. Integrated third-party APIs to automate product catalog updates and order processing workflows for multiple retail partners. Implemented robust monitoring and logging with ELK Stack and custom dashboards for proactive issue detection and performance tuning. Collaborated with cross-functional teams in Agile sprints, mentored junior developers, and conducted code reviews.

Junior Full Stack Developer at Sii Polska

June 1, 2017 - October 27, 2025

Developed server-side applications using Node.js and RESTful APIs, processing requests from multiple web clients efficiently. Built interactive web interfaces with React.js and TypeScript, implementing reusable components and responsive layouts for internal business tools. Assisted in database schema design and maintenance for PostgreSQL and MongoDB, optimizing queries for performance-critical modules. Participated in code reviews, pair programming, and agile ceremonies, contributing to a collaborative development environment. Integrated AWS services including S3 and Lambda for file storage and serverless functions, improving scalability and reducing operational overhead.