Open to senior Android opportunities

Senior Android engineering for secure, scalable products.

I'm Michał — a Senior Android Engineer with 10+ years turning ambiguous requirements into reliable, maintainable apps. I ship fintech-grade Android in complex multi-module codebases, where architecture, performance, and correctness actually matter.

View my work GitHub LinkedIn

0Years experience

0Fintech & enterprise roles

0Kodeksy app downloads

0Hackathon prize (Warsaw)

About

Engineering that survives growth.

Code is easy to write and hard to keep alive. I focus on the second part — building Android systems that stay readable, testable, and fast as teams, features, and requirements pile up.

What I bring

Senior Android Engineer with 10+ years delivering apps used at scale. I work across the whole arc — clarifying fuzzy product needs, designing maintainable architecture, and shipping reliable features. My background spans fintech and enterprise, collaborating with cross-functional and international teams to deliver secure, high-quality mobile experiences.

I care about the boring fundamentals that keep products alive: clean modularization, lifecycle correctness, sensible testing, and performance that holds up under real-world load.

Expertise

The stack I build with.

Modern, Kotlin-first Android with an architecture-led mindset.

Android & Kotlin

Kotlin Coroutines StateFlow Jetpack Compose Android SDK Lifecycle-aware components

Architecture & Quality

Clean Architecture MVVM MVVI Modularization Koin (DI) Unit Testing JUnit MockK

Experience

Selected roles.

Senior Android Engineer — Capco @ Backbase2021 — Present

Deliver large-scale mobile banking features in complex, regulated enterprise environments.
Shape requirements with stakeholders and translate them into maintainable solution definitions.
Own architecture decisions, code quality, and long-term maintainability across modules.
Collaborate closely with product, design, and backend teams across multiple time zones.

Android Developer / Technical Support Engineer — Huawei2019 — 2021

Worked with international engineering teams on Huawei Mobile Services (HMS Core) integrations.
Led the local DTSE team and supported partners building Android apps with HMS / AppGallery.
Delivered technical trainings, presentations, and community-facing support.

Android Developer — Agora2014 — 2019

Built and maintained production Android applications end-to-end.
Independently delivered flagship media apps and supported existing products across the lifecycle.

Selected work

Things I've shipped.

Products with real users, open source, and community work.

Play Store · Flagship

Kodeksy — polskie kodeksy ↗

A solo-built, long-running Google Play app delivering Polish legal codes to professionals — actively maintained for years with a loyal user base.

50k+ downloads 4.4★ rating 475 reviews

Open Source · 19★

Digits ↗

An open-source educational Android app that helps children learn numbers through interactive play.

Community

Knowledge sharing

Online Android instructor with positive reviews; active in community Q&A, mentoring, and technical writing.

Writing

Technical blog

Android-focused articles and field notes on architecture and practical, ship-it engineering.

Let's build something solid.

Open to senior Android roles and serious collaborations. Reach out via professional channels — fastest replies on LinkedIn.

Connect on LinkedIn GitHub

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