SENIOR PRODUCT ENGINEER

Engineering Integrity.

10 years shipping production apps - frontend-first, fullstack when it matters. Now AI-native by practice.

I use AI to scope, build, and automate across the whole stack - from the component to the API to the deployment.

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TS Native Performance
Michał Konopka portrait
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LCP REDUCTION
40%

Edge migration to Cloudflare Workers — 40% faster, 60% cheaper infra.

VELOCITY INCREASE
35%

AI-native SDLC integration with Claude Code & Cursor.

INP IMPROVEMENT
50%

Transition to Astro 'Islands Architecture' and Vue 3.

ACTIVE USERS
2M+

High-concurrency streaming for A+E Networks and RTL.

PROFESSIONAL JOURNEY

Engineering Precision.

01 / 06
01 FEB 2023 - FEB 2026

TrafficLab

Senior Product Engineer
AI-Native SDLC
Integrated Claude Code and Cursor into the daily SDLC, increasing team velocity by 35% while maintaining architectural integrity through DDD.
Edge Performance
Led the migration from Vercel to Cloudflare Workers, reducing LCP by 40% across 15+ international markets.
Modern Architecture
Replaced a legacy monolith with a modern Astro and Vue 3 "Islands Architecture," resulting in a 50% improvement in INP.
Astro Vue 3 Cloudflare Workers TypeScript DDD AI-Native
02 FEB 2021 - FEB 2023

Intive

Senior Software Engineer
Streaming Platforms
Engineered high-concurrency SVOD and TVE streaming products for A+E Networks and RTL, supporting 2M+ monthly active users.
Data Orchestration
Implemented advanced Apollo GraphQL patterns and strategic fragment management, reducing client-side API latency by 25%.
Design Systems
Developed cross-platform Storybook component libraries to reduce design-to-code friction by 20% and ensure high visual polish.
React GraphQL Apollo Storybook TypeScript Jest
03 SEP 2018 - FEB 2021

Univio

Senior Frontend Engineer
Multi-tenant SaaS
Engineered multi-tenant invoicing and checkout flows for global B2B/B2C SaaS, handling complex VAT/Tax logic with zero financial data regressions.
PWA Implementation
Led the implementation of Progressive Web Apps (PWA) to bridge the gap between web and mobile for 200+ individual tenants.
State & Performance
Optimized global state using Vuex and Nuxt.js, reducing bundle sizes by 15% through tree-shaking and lazy-loading.
Vue.js Nuxt.js Vuex PWA TypeScript
04 SEP 2017 - AUG 2018

Ogilvy

Frontend Web Developer
Gamification
Developed a gamification e-learning app for Shell using React.js and Redux, improving employee engagement.
Brand Platforms
Implemented the primary consumer website for Winiary.pl and various promotional contest sites.
React Redux JavaScript
05 JUL 2016 - SEP 2017

Lama Media

Web Developer
Scrum Delivery
Contributed to a range of web projects covering both frontend and backend work in an agile team.
SEO & Speed
Wrote SEO-friendly, semantically correct code and improved page speed using JS, HTML5, PHP, and MySQL.
JavaScript HTML5 PHP MySQL SEO
06 JUL 2015 - OCT 2015

Red Dragon Media

Frontend Web Developer (Intern)
Precision Implementation
Translated multiple website designs from PSD to HTML with pixel-perfect accuracy and responsive behavior.
Modern Tooling
Utilized HTML5, CSS, jQuery, SASS, Gulp, and Bootstrap to create user-friendly interfaces.
HTML5 SASS Gulp jQuery Bootstrap
SWIPE THROUGH THE TIMELINE →
CAPABILITIES

Tech Stack.

Architecting digital experiences through a curated selection of industry-standard tools and modern primitives, focused on scale and performance.

01 / FOUNDATION
Architecture First

System design precedes code. Defining boundaries and data flow before the view layer ensures multi-year scalability.

02 / AI ENGINEERING
AI-Native Practice

Claude Code, RAG pipelines, and LLM tool use are part of how I scope, build, and ship production features today.

03 / QUALITY & EDGE
Fast & Observable

Core Web Vitals, Datadog RUM, and Cloudflare Workers keep production fast, observable, and resilient under load.

Frontend Architecture Performance & Quality AI Engineering Fullstack & Edge Core Web Vitals Datadog RUM Claude Code LLM Tool Use RAG Pipelines Node.js / BFF Cloudflare Workers TypeScript Vue / React CI/CD & Tooling Design Systems
READY TO START?

Let's Talk Strategy.

Available for high-stakes projects and architectural consultations. I build for longevity.

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