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Andrzej BaraczAB

Andrzej Baracz

Senior Software Engineer

€200/day
Berlin, DE
8-15 years

Average response time: 1 hour

About Andrzej

Senior Full-Stack Engineer with 12 years of experience building scalable web applications, cloud systems, and AI-driven platforms. Skilled in frontend & backend development, high-performance APIs, databases, AWS/Azure, and integrating LLM/NLP AI features into production systems.
  • English

    Fluent

  • Polish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Milies
    Senior Software Engineer
    April 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.
    API REST Microservices MongoDB PostgreSQL artificial intelligence
  • Orangesoft
    Senior Software Engineer
    April 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.
    PostgreSQL JavaScript Python Microservices Cloud
  • Belitsoft
    Software Engineer
    October 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.
    React.js Typescript Python Azure DevOps API REST

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Education

  • Master of Science
    Nicolaus Copernicus University
    2021
    Master of Science
  • Bachelor of Science
    Warsaw University of Technology
    2013
    Bachelor of Science

Skill set

Categories