About

I used to design ventilation. Now I build for the web.

I build the part of websites and apps that people see and click. Professionally since 2018, mostly on large online stores, and mainly in Vue since 2023.

Daniel Polak, frontend developer
  • M.Eng. · 3 years of HVAC design
  • Frontend since 2018 · Vue.js daily
  • Zabrze, Poland · remote

Experience

2009–2018

Engineering Background

Degree in environmental engineering, then 3 years designing HVAC systems for buildings. The habit stuck: work out what can go wrong before building.

M.Eng.HVAC
2016–2017

Career switch

Frontend bootcamp alongside a full-time job. Building interfaces suited me better than designing ventilation, so I switched.

FrontendJavaScript
2018–2022

Frontend at SAP

Four years at SAP: internal tools, and proofs of concept built during sales pitches (one week to two months each) showing prospects how their store could run on SAP Commerce. One React app replaced a division manager's planning spreadsheet with a timeline fed from an internal API.

ReactAngularE-commerce
2022–Now

Contract & freelance

Contractor with KPS, a UK e-commerce consultancy. Since 2023 on an international life-science company's B2B store: I helped build a Vue.js tool where lab customers design PCR assays online, and since January 2025 I've been the only frontend developer on the account (checkout, pricing, interface changes). Now also frontend work on a new product configurator for the same client. Earlier: a marketplace integration and a short Shopify migration. Alongside it, a few projects of my own.

Vue.jsTypeScriptSAP Commerce

Ready to see what I've built?

What I work with

Frontend

Vue.jsReactAngularTypeScript

Styling

CSS/SCSSTailwindHTMLResponsive

Tools & CMS

GitWordPressREST APIsSEO

I take photos when I travel. A few of them are below.

Taking on a few projects alongside a long-term contract

Tell me what should work, and by when.

I'll reply with whether I can take it on, from when, and a price range.