Senior Android Engineer - Fintech Platform

InPost · Warsaw/Cracow, , Poland

  • Senior
  • Full-time
  • Posted 2026-11-09
  • Confirmed live on 10 November 2026

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Job description

Job Description
We are looking for an experienced Android Engineer to join our FinTech Platform team. You will take end-to-end ownership of the native Android platform, including its architecture, quality, performance, and delivery across a diverse Android device landscape.
This role combines deep Android engineering expertise with a strong product mindset. You will be accountable not only for platform health, but also for the business outcomes and user experience of the consumer and merchant-facing solutions you build.

• Own the architecture of a production FinTech Android application, including layered architectural patterns, module boundaries, and the Gradle build structure.

• Develop and maintain native Android solutions using Kotlin, Jetpack Compose, and the View system.

• Implement reliable concurrency and state management using Kotlin Coroutines and Flow.

• Work with local persistence and security solutions such as Room, EncryptedSharedPreferences, and Android Keystore.

• Contribute throughout the development lifecycle, including PRD authorship, specification writing, testing, feature-flagged releases, and structured event emission.

• Build and maintain automated tests using JUnit, Espresso, and Compose Testing.

• Profile and improve application performance using Android Profiler and Perfetto, with a focus on CPU usage, memory, and UI performance.

• Maintain a zero-regression approach by monitoring crashes and ANRs through tools such as Crashlytics.

• Support CI/CD automation using Gradle, GitHub Actions, or equivalent solutions.

• Own integrations between native and web-based experiences, including WebView, Custom Tabs, App Links, and deep linking.

• Co-own the team backlog with Engineering and Product Managers, bringing Android constraints and native solution proposals into requirement shaping.

• Collaborate with backend engineers on API contracts, authentication flows, and event schemas.

• Participate in production incident support and post-mortem activities when required

Qualifications
• At least 5 years of experience in native Android engineering, including production applications published through Google Play.

• At least 4 years of experience working with Kotlin and Jetpack Compose and/or the Android View system.

• At least 3 years of experience with Android testing using JUnit, Espresso, and Compose Testing.

• Strong command of Kotlin, including Coroutines, Flow, sealed classes, and extension functions.

• Production-level experience with Jetpack Compose and the View system.

• Knowledge of Clean Architecture, MVVM, and/or MVI, with a strong understanding of module and layer boundaries.

• Experience with Hilt or Dagger 2, including component lifecycle and scope management.

• Experience with Room, EncryptedSharedPreferences, and Android Keystore.

• Knowledge of Retrofit and OkHttp, including certificate pinning and structured error handling.

• Experience with Android performance profiling using Android Profiler and Perfetto.

• Experience with Gradle-based CI/CD and automated signing and delivery processes.

• Ability to read and work with Java in legacy systems and third-party SDK integrations.

• Experience integrating feature flags and structured events at the mobile layer.

• English at a minimum B2 level.

• A university degree in Information Technology, Computer Science, or a related field.
Nice to have

• At least 2 years of experience in FinTech or regulated mobile application development.

• Experience with Google Pay or Android payment APIs.

• Experience with modular Android applications at a multi-module scale.

• Knowledge of Instant Apps.

• Experience implementing WCAG or Android accessibility standards in production applications.

• Familiarity with KSP, KAPT, custom Gradle plugins, or Gradle convention plugins.

Additional Information
• Opportunity to work in a diverse, international, and cross-functional environment, along with leading experts.

• You work and learn from a senior leader and their leadership team, expanding your experience and exposure in the e-commerce and logistics industries.

•  InPost is a growing company that offers its people an increasing number of opportunities in several locations in Europe.

• Fulfilling careers with a range of benefits for people and investing in providing training opportunities for their development.

• You will feel a part of the InPost community that makes an impact on sustainability, convenient deliveries, and the circular economy every day.

• Excellent working environment and flexible hours

• We offer B2B type of contract

Company Description
InPost Pay is building its own fintech platform from the ground up. It’s a large-scale, international initiative where engineers will have the opportunity to shape the architecture, build core fintech components, and create solutions designed to operate at InPost’s scale.
We’re building a lean, highly effective engineering organization in Poland, with AI-nativ

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