Senior Android Engineer Fintech & Enterprise 10+ Years

Android engineering for secure, scalable products.

I build production-grade Android applications with a strong architectural mindset — focused on reliability, maintainability, and performance in complex, multi-module codebases.

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            Architecture Ownership
            Clean Architecture, MVVM/MVVI, modularization, long-term maintainability.
          
            Fintech Delivery
            Enterprise-grade mobile banking work in regulated environments.
          
            Quality & Reliability
            Unit testing, performance optimization, lifecycle correctness.

About

What I bring

Senior Android Engineer with over 10 years of professional experience delivering Android applications used at scale. I specialize in modern Android development and shaping robust solutions for complex product requirements — from clarifying ambiguous needs to designing maintainable architectures and shipping reliable features.

My background includes fintech and enterprise environments, collaborating with cross-functional teams and international stakeholders to deliver secure, high-quality mobile experiences.

Expertise

Core skills

Android & Kotlin

Kotlin Coroutines StateFlow Jetpack Compose Android SDK Lifecycle-aware components

Architecture & Quality

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

Experience

Selected roles

Senior Android Engineer — Capco @ Backbase 2021 – Present

Delivered large-scale mobile banking features in complex enterprise environments.
Shaped requirements with stakeholders and translated them into maintainable solution definitions.
Owned architecture decisions, code quality, and long-term maintainability across modules.
Collaborated closely with product, design, and backend teams across multiple time zones.

Android Developer / Technical Support Engineer — Huawei 2019 – 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 — Agora 2014 – 2019

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

Portfolio Highlights

Projects & contributions

App

Kodeksy

Google Play application providing legal codes for professionals. Built as a long-running product with real users.

Open Source

Digits

Open-source educational Android app helping children learn numbers in an interactive way.

Community

Knowledge sharing

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

Writing

Technical blog

Android-focused articles and notes on architecture and practical engineering.

Recognitions

Hackathon awards include a first prize and honorable mentions (Warsaw).

Contact

Professional links only

For opportunities, please reach out via professional channels:

mokrzycki.eu GitHub LinkedIn

This portfolio intentionally excludes sensitive personal data (phone, exact address).