Andrzej Kowalewski

Software Engineer @ Netflix

Warsaw, Mazowieckie, Poland

About

I am a results-driven Software Engineer with a passion for designing and scaling distributed systems that operate under high-throughput, mission-critical constraints. My expertise lies in full-cycle engineering, from architecture and implementation to identifying systemic bottlenecks and delivering high-impact performance optimizations. I thrive on translating complex business challenges into robust, resilient, and measurable technical solutions.

Experience

  • Software Engineer at Netflix
    Feb 2026 - Present · 6 mos

  • Goldman Sachs ()
    • Software Engineer – Securities Lending Technology (Associate)
      Jan 2023 - Jan 2026 · 3 yrs 1 mo

      • Uplifted core accrual calculation business logic, transforming it into a stateless component, reducing calculation time from 1.5 hours to 4 minutes for whole client universe • Remodeled and unified the client configuration model of accrual platform, streamlining complex configuration traversal logic • Streamlined pre-trade file delivery mechanism with MongoDB and Kafka Streams, reducing delivery time to within 5 minutes of upstream data readiness and eliminating reliance on legacy system • Analyzed and resolved high-impact, time-sensitive client fee discrepancies, managing communication with business stakeholders • Drove platform stability and performance initiatives by identifying common systemic issues, leading the analysis and proposing cost-effective, high-impact solutions

    • Software Engineer – Securities Lending Technology (Analyst)
      Aug 2021 - Dec 2022 · 1 yr 5 mos

      • Cut trading-critical application startup time from 4 hours to 3 minutes by implementing a Kafka Streams-based cache, significantly mitigating business risks associated with outages

  • Undergraduate Teaching Assistant at Imperial College London
    Jan 2020 - Apr 2021 · 1 yr 4 mos

    • Mentored and supervised second-year undergraduate students in compiler design and development for the Language Processors course • Provided expert guidance on developing a C-to-MIPS compiler in C++ • Coached students on effective compiler debugging techniques and optimal design approaches

  • SoC Modelling Engineer - Industrial Placement at Samsung Cambridge Solution Centre
    Mar 2020 - Sep 2020 · 7 mos

    • Developed Virtual Prototypes for hardware architecture exploration of components of high-end wireless communication chips • Proposed and developed the Python-based TCL generator using Jinja2 to automate the process of assembling Virtual Prototypes • Integrated cycle-accurate SystemC models of ARM processor and interconnect components into Platform Architect • Documented the Virtual Prototype development flow to serve as a basis for future SCSC projects

  • Architecture and Digital Design Intern at Samsung Cambridge Solution Centre
    Jul 2019 - Sep 2019 · 3 mos

    • Developed a behavioral SystemC transaction-level model for a MAC unit by translating its SystemVerilog hardware implementation • Gained experience in the industry-standard hardware development flow and presented progress updates, culminating in a final presentation to the management team.