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July 16, 2026

Senior Android Developer

Senior • Remote

150 - 180 PLN/hr

Warsaw, Poland

Work mode: 100% remote from Poland

Salary: up to 180 PLN/h on B2B contract

Project duration: long-term

About the project

We are looking for an experienced Senior Android Developer to join a long-term, fully remote project focused on building and scaling high-impact mobile applications used by millions of users across Europe.

You will contribute to the development of a highly recognizable mobile platform, playing a key role in enhancing application performance, scalability, and user experience, while collaborating with cross-functional teams in an agile environment.

Key Responsibilities

  • Develop high-quality, testable, and maintainable Android applications.
  • Actively participate in technical discussions and contribute to architectural decisions.
  • Ensure code quality through regular code reviews and adherence to best practices and standards.
  • Collaborate with product, design, and backend teams to deliver new features.
  • Refactor and improve existing code to enhance performance and maintainability.
  • Create and maintain technical documentation (architecture, processes, and implementation details).
  • Continuously evaluate and implement new technologies to improve efficiency and product quality.

Requirements

  • Strong experience in Android development using Kotlin and Java.
  • Hands-on experience with modern mobile architectures such as MVVM, Clean Architecture, and SOLID principles.
  • Ability to work both independently and within a cross-functional agile team.
  • Experience with CI/CD pipelines, release processes, and version control systems (e.g., Git).
  • Good understanding of UI/UX principles, including Material Design.
  • Strong problem-solving skills and attention to details.

Nice to Have

  • Experience working on scalable applications with large user bases.
  • Familiarity with performance optimization and mobile application scaling.

What We Offer

  • Fully remote work model.
  • Long-term collaboration on a B2B contract.
  • Benefits package including Multisport card, private medical care, health insurance.

Recruitment Process

  • Live Coding Session (90 minutes)
  • System Design Interview (90 minutes)
  • Hiring Manager Interview (60 minutes)
  • Technical/Behavioral Interview (Bar Raiser – 60 minutes)
  • Final Decision and Offer

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Gdansk, Poland

160 - 190 PLN

🏢 Summary: B2B contract for a Senior Android Engineer to develop and maintain high‑impact mobile applications for a leading European media and entertainment provider. The role focuses on building scalable Android solutions for live sports, fan engagement and premium content platforms used by millions of users. It is a 6‑month remote project (with possible extension) starting ASAP. 🗂️ Requirements: Strong experience with Kotlin, Commercial experience with Jetpack Compose, Experience building responsive UIs for phones and tablets, Experience developing and maintaining mobile backend services, Knowledge of SOLID principles and mobile architecture patterns, Experience with Dagger or Hilt for Dependency Injection, Experience with Kotlin Coroutines, Experience with AndroidX Architecture Components, Experience with modular Android development, Experience with Firebase SDKs, Experience with CI/CD pipelines, Experience with observability and performance monitoring, Experience with Unit Testing and UI Testing, Proficiency with Git workflows, Practical experience working in Agile environments 📃 Skills: Kotlin, JetpackCompose, Android, AndroidX, Coroutines, RxJava, Dagger, Hilt, Firebase, Git, CI/CD, UnitTesting, UITesting, SOLID, Agile 🏢 Description: Project details: Role: Senior Android Engineer Duration: 6 months (with the possibility of further extension), Start: ASAP, the kick-off of the project is planned for April 2026, Contract: B2B, Equipment: Laptop provided by the customer, Work mode: 100% remote from Poland. About our customer: Our customer is a rapidly growing international software company that specialises in delivering media and entertainment projects. It is expanding its capabilities in the areas of the Internet of Things (IoT), cloud computing and tailored artificial intelligence (AI) solutions. They collaborate with global organisations to design and implement strategic infrastructures, content workflows, and consumer-facing digital applications. This role will enable you to support their ongoing European expansion while working on a high-impact digital product used by millions. About the project: Project for Large European Media & Entertainment Provider. You will work on behalf of the customer for one of Europe's leading media and entertainment companies, an organisation known for delivering premium content, live sports, award-winning news and innovative digital products to millions of users. The client operates in a fast-paced, innovation-driven environment and is continuously evolving its digital experiences across mobile, streaming and interactive platforms. Their teams are recognised for developing cutting-edge technology solutions that prioritise customer experience and large-scale impact. Your work will focus on mobile applications related to: Live sports experiences, Fan engagement features, Premium news and content experiences. Required Skills: Strong expertise in Kotlin and Jetpack Compose, Experience building responsive UIs for phones and tablets, Experience creating and maintaining mobile backend services, Solid understanding of SOLID principles and mobile architecture patterns, Dagger/Hilt for Dependency Injection, Kotlin Coroutines (must‑have); RxJava (nice‑to‑have), AndroidX Architecture Components, Experience with modular Android app development, Familiarity with Firebase SDKs, Experience with CI/CD pipelines , observability and performance monitoring, Strong background in Unit Testing and UI Testing, Excellent Git workflows, branching and commit practices, Practical understanding of Agile principles, ceremonies, planning and estimating. Responsibilities: Lead the development and maintenance of high‑quality Android applications serving millions of users, Implement scalable features using modern Android best practices and clean architecture, Collaborate with designers, backend developers and product owners across both the consultancy and the end client, Ensure performance, reliability and exceptional user experience across diverse Android devices, Participate in architectural decision-making and contribute to platform‑wide best practices, Maintain strong test coverage and contribute to continuous integration and delivery pipelines, Contribute to monitoring, observability and performance improvements, Coach and support other engineers when needed.

Technology

7N

Senior Android Developer (Kotlin)

Senior

Remote

Gdansk, Poland

160 - 180 PLN

🏢 Summary: Senior Android Developer role focused on developing and maintaining a native Android mobile application for a SaaS platform in the construction industry. The position involves implementing new features, migrating legacy code from Java/XML to Kotlin and Jetpack Compose, and supporting product scaling. Remote work with a long-term contract until the end of 2026. 🗂️ Requirements: Minimum 7 years of experience as Android Developer, Strong knowledge of Kotlin, Experience in native Android application development, Practical experience with Jetpack Compose, Experience migrating applications from Java/XML to Kotlin/Compose, Knowledge of SQL, English proficiency at B2/C1 level 📃 Skills: Kotlin, Android, Jetpack, Compose, Java, XML, SQL 🏢 Description: Dla naszego klienta z branży budowlanej poszukujemy osoby na stanowisko Senior Android Developer. Osoba na tym stanowisku odpowiedzialna będzie za rozwój i utrzymanie aplikacji mobilnej dla platformy SaaS. Model pracy: praca zdalna (możliwe podróże do Łodzi - max. 1-2 razy/projekt) Czas trwania: do końca 2026 (istnieje możliwość przedłużenia) Start: ASAP Zakres obowiązków Rozwój i utrzymanie aplikacji mobilnej (Android) dla platformy SaaS w branży budowlanej Tworzenie nowych funkcjonalności zgodnie z roadmapą produktową ( m.in . wyszukiwanie, filtrowanie, integracja z 3D viewerem) Migracja i modernizacja istniejącego kodu (z Java/XML do Kotlin + Jetpack Compose) Współpraca z Tech Leadami oraz zespołem developerskim przy rozwoju produktu Udział w pracach nad skalowaniem produktu i dostosowaniem do rosnących wymagań biznesowych Praca w środowisku z istniejącą architekturą i elementami legacy Oczekiwania Min. 7 lat doświadczenia na stanowisku Android Developera Bardzo dobra znajomość Kotlin (poziom senior) Doświadczenie w tworzeniu natywnych aplikacji Android Praktyczna znajomość Jetpack Compose Doświadczenie w migracji aplikacji z Java/XML do Kotlin/Compose Znajomość SQL Bardzo dobra znajomość języka angielskiego (min. B2/C1) Oferujemy Stałe wsparcie osobistego agenta , dbającego o Twoją ciągłość projektową, kontakt z klientem, niezbędne formalności, komfort pracy oraz rozwój, Consultant Development Program – doradztwo w planowaniu kariery w oparciu o najnowsze trendy i potrzeby rynku IT, obejmujące m.in . konsultacje z agentami i mentorami kariery , Dostęp do 7N Learning & Development – platformy rozwojowo-edukacyjnej z webinarami, biblioteką artykułów i raportów branżowych oraz regularnymi zaproszeniami na jednorazowe i cykliczne wydarzenia rozwojowe – techniczne, biznesowe oraz life-stylowe, Spektakularne eventy integracyjne , zarówno dla Ciebie (np. coroczny wyjazd Kick-Off , imprezy świąteczne czy sportowe Letnie Igrzyska), jak i dla Twoich bliskich (np. pikniki rodzinne, premiery filmowe), Rozwój zawodowy nie tylko podczas projektu – możesz zaangażować się w przekazywanie wiedzy innym w ramach oferty 7N Services kierowanej do klientów 7N, Relacje i dostęp do wiedzy najbardziej doświadczonych ekspertów IT na rynku – średni staż zawodowy naszego Konsultanta w Polsce to ponad 10 lat. Pakiet benefitów zaplanowany od A do Z , czyli dofinansowanie do opieki medycznej, ubezpieczenia na życie, karty sportowej dla Ciebie i Twoich bliskich, a także zniżki do sklepów w Polsce i za granicą O 7N Ciągłe poszukiwanie projektów, trudne negocjacje stawek, brak wsparcia w rozwoju – brzmi znajomo? W 7N zyskujesz nie tylko stabilność kontraktów, ale też zaangażowanie osobistego opiekuna dbającego o Twój komfort zawodowy i stały dostęp do inicjatyw rozwojowych. Naszym celem jest zapewnienie Ci stabilnej i komfortowej współpracy, która przyczyni się do sukcesu Twojego jako eksperta IT oraz naszych klientów. Budujemy trwałe relacje, bazując na skandynawskich wartościach i 30-letnim doświadczeniu w tworzeniu rozwiązań IT dla ponad 200 organizacji.