Author profile

Sławomir Plamowski

Founder & Author at EasyInterview

Senior software engineer, software architect, and technical lead turning +15 years of hands-on engineering experience into practical preparation for developer interviews.

LinkedIn GitHub slawek@easyinterview.me

Technical background

Architecture ownership, grounded in production

I am a senior software engineer, architect, and technical lead with +15 years in financial, trading and quantitative analysis. As a software architect, I help govern platform architecture through architectural reviews, guidelines, ADRs, coding standards, and technical-debt planning. I own the post-trade domain and have designed accounting, settlement, broker-configuration, and client-facing API services for institutional trading systems.

My work covers message-driven architecture, contract-first APIs, horizontal scaling, high availability, reconciliation, observability, and performance testing. Before my current position, I led backend teams and software-quality initiatives at Bank New York and UBS, built banking systems at EuroBank, and worked in applied machine learning at University.

At EasyInterview, I am the founder and author responsible for technical direction, research, writing, and review. My aim is to help developers reason through real engineering trade-offs instead of memorizing definitions.

I also run flipcards.pl, a Polish-language interview-preparation business I started in 2020. It helps developers prepare with physical and online flashcards, curated interview questions, and PDF guides.

Areas of expertise

Topics I work with and write about at EasyInterview.

Software architecture
Distributed and message-driven systems
Java, Spring, Python
Financial technology and algorithmic trading
API design and contract testing
Scalability and high availability
Performance and observability
Technical leadership and mentoring
TDD and software quality
Applied machine learning
Technical interviews

Written by Sławomir Plamowski

Latest articles

89 practical guides covering technical interviews, engineering fundamentals, and system design.

Browse the blog

May 18, 20269 min read

16 System Design Interview Problems: Senior Roadmap (2026)

Study 16 system design interview problems through a senior roadmap of reusable patterns, trade-offs, failure modes, and recommended reading order.

May 17, 202622 min read

GFS-Style Distributed File System Design Interview 2026

Design a GFS-style distributed file system with metadata, chunks, replication, leases, record append, failure recovery, and consistency trade-offs.

May 12, 202619 min read

30 CSS Grid Interview Questions and Answers

Prepare for CSS Grid interviews with 30 questions, clear answers, diagrams, responsive patterns, subgrid, accessibility, debugging, and code examples.

May 12, 202619 min read

32 Flexbox Interview Questions and Answers

Prepare for Flexbox interviews with 32 questions, diagrams, CSS examples, logical axes, centering, flex sizing, wrapping, accessibility, and debugging.

May 10, 202624 min read

Design a Collaborative Editor: System Design Interview 2026

Design a collaborative editor with OT, CRDT and hybrid approaches: convergence, offline sync, durable updates, undo, security, and scaling trade-offs.

May 3, 202620 min read

Design a Key-Value Store: System Design Interview 2026

Design a Dynamo-style key-value store with quorum intersection, version vectors, sloppy quorum, hinted handoff, repair, and conflict resolution.

All articles

Browse the complete archive, from system design to language fundamentals.