KRZYSZTOF IRZYK

SENIOR SOFTWARE ENGINEER

Krzysztof Irzyk

Angular, TypeScript, Node.js and AI in production

Ten years in commercial teams — mostly Angular and TypeScript, often with Node.js on the side. Lately that also means chat and LLM features in live products, and Cursor / Claude / Codex in the editor every day.

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10 yrs
Commercial experience
10+
Products shipped
EU / PL
Remote / Hybrid
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Selected work

06 CASE STUDIES

Six roles across energy, eCommerce, IoT and healthcare. Full-time teams, a co-founded telemedicine product, and longer consulting gigs.

CURRENT ROLE 2025 — PRESENT ENERGY · ENTERPRISE

onhsr.com

Current role: Angular web and Capacitor mobile for energy clients (including TAURON), plus dashboards, ops tools, and an AI chat on OpenAI / Bedrock.

Angular Capacitor AWS Bedrock
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onhsr.com product preview
FULL-TIME 2019 — 2025 ECOMMERCE · SAAS

Sweet Analytics

Six years on an eCommerce analytics SaaS. Dashboards and reports for retailers pushing serious order volume.

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STARTUP · CO-FOUNDER 2024 — 2025 HEALTHCARE

EconMed IT

Co-founded PROCION: telemedicine for oncology — patient and clinician apps in Angular.

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CONSULTING 2019 — 2024 HEALTH-ECONOMICS

EconMed Europe

PharmCalculators and EU HTA tools with Ecker + Ecker. Angular for people who price and assess treatments.

View case study
CONSULTING 2021 — 2025 LEGAL & REAL ESTATE

Artic Digital

Part-time remote for legal and real-estate platforms. Angular features that stayed in production for years.

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FULL-TIME 2016 — 2019 INDUSTRIAL IOT

Elmodis

Industrial IoT in Kraków. Live monitoring and diagnostics — sensor data into operator screens.

View case study

How I ship

TECH STACK

Angular and TypeScript for most of the last decade. Node.js when needed. AI tools in the editor and, where it fits, in the product.

AI

Editor and product
Cursor Claude OpenAI API AWS Bedrock Codex

FRONTEND

Angular TypeScript RxJS · Signals Capacitor Tailwind CSS SCSS PrimeNG Angular Material Bootstrap

BACKEND & DATA

Node.js REST APIs WebSockets PostgreSQL MongoDB

CLOUD & DEVOPS

AWS S3 · CloudFront GitHub Actions Docker

TESTING & WORKFLOW

Jest Jasmine Git · GitHub · GitLab Jira Figma

Experience

FULL-TIME

  • Senior Frontend Software Engineer · onhsr.com
    2025 — Present · Rzeszów, PL
  • Frontend Software Engineer · Sweet Analytics
    2019 — 2025 · London, UK
  • Software Engineer · Elmodis
    2016 — 2019 · Kraków, PL
  • Intern · Maar Technology
    2015 · Kraków, PL

STARTUP

  • Co-Owner & Angular Developer · EconMed IT
    2024 — 2025 · Kraków, PL

CONSULTING / FREELANCE

  • Angular Developer · Artic Digital
    2021 — 2025 · Valencia, ES
  • Angular Developer · EconMed Europe
    2019 — 2024 · Kraków, PL