Michał
Tajchert

Chief Technology Officer 最高技術責任者

@mtajchert · WARSAW, PL

I build high-agency product engineering teams that excel at speed and ownership to build the best.

ENGINEERING LEADERSHIP PRODUCT TECH MOBILE PLATFORMS DATA

mtajchert — zsh — 96×24

mtajchert@nothing:~$ cat ~/.philosophy

> the best way to understand it is to build it.

mtajchert@nothing:~$ ls ~/building

> kanarek.app open-source/ data-viz/ experiments/

mtajchert@nothing:~$ history | grep -c commit

> 15+ years of shipping

mtajchert@nothing:~$

SCALE 規模

CTO

Software, design & data · Lite e-Commerce

25+

Mobile developers across 4 teams · MODIVO

Markets with shipped mobile products · eCommerce

2 → 25

Built mobile capability from the ground up · DXC

500k+

Users on consumer products at 4.8★ · Kanarek.app

01 / ABOUT

概要

I'm the person who looks at your microwave and wonders if it can run Doom.
Most often, it can.

I work close to product, architecture, and team design: enough strategy to keep direction clear, enough hands-on engineering to keep decisions grounded.

Outside the day job I keep building — projects big and small, like Kanarek.app. If I need something, I build it: full-stack tools, data-viz experiments, and things with real design care. And I love giving back, whether through open source or the wider community.

02 / PROJECTS 制作物

Pixel Pushing

SHIPPED · 主要

★ HIGHLIGHT ↗

Kanarek.app

Air-quality monitoring app aggregating Polish smog data across mobile platforms.

MOBILEDATAAIR QUALITY

200k+ active users4.8/5 rating

★ HIGHLIGHT ↗

WaitingDots

Android loading animation library built around bouncing dots, shipped as a small reusable UI component.

KOTLINANDROIDOSS

700+ ★MIT license

★ HIGHLIGHT ↗

Nammu

Android runtime-permission helper for cleaner permission checks, callbacks, monitoring, and Android M-era app flows.

KOTLINANDROIDPERMISSIONS

700+ ★MIT license

ALSO · 出荷済み

↗

BusWear

EventBus support for Android Wear and mobile apps with synchronized event buses.

JAVA · ANDROID WEAR · OSS

↗

ExceptionWear

Android Wear exception-handling library for making wearable app failures easier to manage.

JAVA · ANDROID WEAR · OSS

↗

RuntimePermissionWorkshop

Workshop material for teaching Android runtime permissions through practical examples.

JAVA · WORKSHOP · ANDROID

EXPERIMENTS · POC · 実験

12Hours APP

Calendar-as-analog-clock widget; 100k users in three days after Reddit traction.

SGH Daily STUDENTS

University app with timetable, news, and cancelled-class alerts; 10k+ users.

Warsaw Hacks 1ST PRIZE

Civic identity-verification concept using one-time codes for public employees.

03 / EXPERIENCE

経歴

Chief Technology Officer

NOW

Lite e-Commerce · Feb 2025 — present

Leading software, design, and data for Żabka Jush and Delio.

MODIVO SA

ECOM

Full-time · Nov 2021 — Dec 2024 · 3 yrs 2 mos

Mobile apps and Backend-For-Frontend work for a fast-growing fashion eCommerce group operating across 19 markets.

Engineering Manager

May 2022 — Dec 2024

Mobile Technology Leader

Nov 2021 — May 2022

MODIVO and eobuwie apps across 19 markets.

4 teams, ~25 mobile developers.

Shift from outsourcing toward in-house delivery.

Mobile Technology Leader

BANKING

BlueSoft · Oct 2020 — Oct 2021

Led mobile technology and the Android team for Raiffeisen Ukraine.

4 feature teams, ~14 senior developers.

Jetpack Compose, SwiftUI, shared modules, and design-system work.

Technology Business Development Manager

FINTECH

DXC Technology · Feb 2019 — Sep 2020

Worked across technology ownership, software management, architecture, and client-facing business development.

eDirham G3 for UAE Ministry of Finance, based on BLIK/OTP flows.

IKO modularization for a 5M+ client banking app.

Built mobile capability from 2 to 25+ developers.

Android Team Lead @ Raiffeisen

BANKING

BlueSoft · Jul 2017 — Jan 2019

Led a six-person Android team building a new banking app while maintaining Mobilny Portfel and coordinating the BNP mobile merge.

New banking app delivered in 7 months.

Kotlin, DI, and multi-module architecture in banking.

Startups

Warsaw & Toronto · Jun 2015 — Jun 2017

Built and led early product work across analytics, mobile apps, and consumer products; mixed Android delivery with founder-level ownership.

Brand24 — Team lead, new Android app from scratch.

Yawn — CEO — team, delivery, and product.

Icelytics — CEO — mobile network-analytics product.

12Hours.io — Early product and technical direction.

Software Engineer

Polidea · Jul 2014 — Apr 2015

Professional software engineering in a mobile-focused software house, building Android products for clients.

Android Developer

BrandCare · Jul 2013 — Oct 2013

Early commercial Android work, including Banamo, a privacy-focused safer community app.

04 / EDUCATION

学歴

SGH Warsaw School of Economics

Master's degree, E-Business · 2015 — 2019

Toronto Metropolitan University, Canada

Feb 2017 — Jul 2017

Full scholarship at The DMZ startup accelerator.

Polish-Japanese Academy of Information Technology

Bachelor of Engineering, Computer Science · Mobile Devices · 2011 — 2015

05 / ACTIVITY

活動

Last 12 months · GitHub + GitLab.

06 / COMMUNITY

コミュニティ

13–19

GDG Warszawa

organizer · events, speakers, and community

↗

25+

Android talks in 2015

conference and meetup sessions, including 400+ attendee events

↗

MENTOR

Google Launchpad Week

startup mentoring, mostly mobile and technical direction

↗

OSS

Android open-source teaching material

RuntimePermissionWorkshop · Nammu · Android runtime permissions

↗

07 / CONNECT

連絡

BLOG

mtajchert.hashnode.dev

MichałTajchert

01 / ABOUT

Pixel Pushing

Kanarek.app

WaitingDots

Nammu

BusWear

ExceptionWear

RuntimePermissionWorkshop

03 / EXPERIENCE

04 / EDUCATION

SGH Warsaw School of Economics

Polish-Japanese Academy of Information Technology

05 / ACTIVITY

06 / COMMUNITY

GDG Warszawa

Android talks in 2015

Google Launchpad Week

Android open-source teaching material

07 / CONNECT

Michał
Tajchert