Michał Tajchert
cv (pdf)

CTO in Warsaw. I build product engineering teams that move fast and own what they ship.

CTO at Lite e-Commerce, covering software, design and data for Żabka Jush and Delio. I stay close to product, architecture and team design, and I still ship my own apps on the side.

I learn by building. I stay hands-on and keep shipping: Kanarek.app, my air-quality app for Poland, has more than 200k active users and a 4.8 rating, and the apps, CLIs and MCP tools below are how I try new technology first-hand. I won 1st prize at Warsaw Hacks, organized GDG Warszawa and have spoken at many Android events.

15+ years shipping software | 25+ mobile developers across 4 teams at MODIVO | mobile products in 19 markets | 500k+ users on consumer apps rated 4.8★

side projects

  1. Kanarek.app (kanarek.app) Air-quality app aggregating Polish smog data | 200k+ active users | rated 4.8/5
  2. Paczkofast (android) Unofficial Android app for InPost parcels and pickup lockers | Kotlin
  3. Suuntool (cli) Unofficial CLI and MCP interface for Suunto cloud fitness data
  4. Smallibre (macos) Native macOS ebook manager | Swift
  5. PhoneFramer (web) Device mockups from screenshots, right in the browser
  6. Catch up HN (web) The best Hacker News stories from any time period
  7. Summary Slide (web) Apple-style summary slide generator for presentations
  8. wFirma MCP (open source) Local MCP server for read-only wFirma.pl invoicing data | Python
  9. harq (open source) HAR file viewer for the command line | Rust
  10. BusWear, ExceptionWear, Nammu, WaitingDots (open source) Android and Android Wear libraries | Nammu and WaitingDots have 700+ GitHub stars each
  11. 12Hours (experiment) Calendar-as-analog-clock Android widget | 100k users in three days
  12. SGH Daily (experiment) University timetable, news and cancelled-class alerts | 10k+ users
  13. Warsaw Hacks (hackathon) Civic identity-verification concept | 1st prize
more on GitHub

experience

  • 2025 – nowLite e-Commerce | Chief Technology Officer
  • 2021 – 2024MODIVO SA | Engineering Manager | mobile and backend-for-frontend across 19 markets
  • 2019 – 2020DXC Technology | Tech BizDev Manager | mobile capability grown from 2 to 25+
  • 2017 – 2021BlueSoft | Mobile / Android Lead | Android banking apps for Raiffeisen
  • 2015 – 2017Startups | Brand24, Yawn, Icelytics, 12Hours.io
  • 2013 – 2015Polidea, BrandCare | early Android roles

community

  • Organizer of GDG Warszawa, 2013–2019
  • 25+ Android talks in 2015, including events with 400+ attendees
  • Startup mentor at Google Launchpad Week
  • Open-source Android teaching material: RuntimePermissionWorkshop