About Andrzej
English
Fluent
Polish
Native or bilingual
Experience
- MiliesSenior Software EngineerApril 2024 - Today (2 years and 2 months)• Built and improved user-facing and internal tools using React and data visualization libraries to track engagement, content performance, and listener behavior.• Developed search and discovery interfaces with Next.js and TypeScript to provide clear, actionable insights for teams.• Designed and integrated backend APIs using Python and Node.js, improving performance, scalability, and database efficiency.• Contributed to AI-powered features, including LLM-based customer support tools and NLP pipelines for extracting insights from unstructured text.• Partnered with QA and DevOps teams to maintain reliable CI/CD pipelines using Jenkins and AWS.
- OrangesoftSenior Software EngineerApril 2021 - March 2024 (2 years and 11 months)• Developed backend services and data pipelines in Node.js and Python to process large volumes of asset data and support security insights at scale.• Built dashboards and investigation tools to help teams explore assets, risks, and relationships in real time.• Designed and optimized PostgreSQL and MongoDB schemas for complex relationships while keeping queries fast.• Implemented cloud-native infrastructure on AWS, including Lambda, API Gateway, S3, and RDS, with real-time updates via WebSocket.• Collaborated closely with product, security, and DevOps teams to ensure reliable, accurate, and secure delivery.
- BelitsoftSoftware EngineerOctober 2013 - March 2021 (7 years and 5 months)Started as an intern and grew into a software engineer, contributing to web applications and cloud solutions.• Built and maintained user-facing applications using React.js and TypeScript with focus on performance and usability.• Designed and implemented REST APIs with Python (Flask), integrating OAuth 2.0 and managing databases with PostgreSQL and Azure Cosmos DB.• Deployed and monitored applications via Azure DevOps, using Active Directory for access control and Azure Monitor for performance tracking.• Created data visualizations with D3.js to help teams understand complex datasets and support decision making.• Collaborated with cross-functional teams to define requirements, troubleshoot issues, and deliver high-quality software on schedule.
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Education
- Master of ScienceNicolaus Copernicus University2021Master of Science
- Bachelor of ScienceWarsaw University of Technology2013Bachelor of Science