Matej Janacek, Principal Frontend Engineer

Description

Experienced Software Engineer possessing 15+ years of proficiency in

building robust, scalable web interfaces using various modern frontend

technologies with strong focus on performance and user experience. Skilled in

steering frontend architecture, mentoring teams, and managing CI/CD

pipelines to streamline releases. Backed by Agile and Scrum Master

experience, committed to advancing technical excellence and facilitating

cross-team collaboration in dynamic environments.

Languages

English
Native or bilingual
Czech
Native or bilingual
Slovak
Native or bilingual
Spanish
Conversational
German
Basic

Workplace preferences

Can work on-site

Zurich (up to 50km)

SMG Swiss Marketplace Group
Senior Software Engineer
June 2023 - September 2025 (2 years and 3 months)
Zürich, Switzerland
- Frontend Team Lead (informal) – Owned frontend architecture decisions, mentored developers, and coordinated cross-team delivery to improve velocity and product quality
- Owned CI/CD pipelines and release processes to ensure reliable and
efficient deployments
- Started to use AI tools extensively: Copilot, Claude code
- Technical stack: React, Typescript, Redux, RTK Query, AWS services, PHP, Radix UI, Jest, Playwright, Github actions
React.js Typescript redux Amazon Web Services GitHub
Freelance
Lead Software Engineer
May 2022 - May 2023 (1 year)
Zürich, Switzerland
- Co-founded a fitness app tech startup Tech stack: Svelte, SvelteKit, Tailwind, Firebase, PostgreSQL
Svelte SvelteKit JavaScript External API integration PostgreSQL
Tundra
Senior Frontend Engineer
September 2019 - April 2022 (2 years and 7 months)
Zurich, Switzerland
- Responsible for development of large e-commerce web app
- Overseeing integration with backend and multiple 3rd party libraries
- Participated on e-commerce Chrome extension development
- Contributed to the growth of the company through multiple successful funding rounds
- Tech stack: Typescript, React, Redux, ReactNative, MaterialUI, Playwright
Typescript React.js redux External API integration Playwright

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Master's degree
Brno University of Technology
2010
Master's degree
Master's degree
Universidad de Valladolid
2008
Master's degree

Check out Matej's education

Software Engineer