June 12, 2026
Senior Android Developer with Kotlin, Security SDK Platform
Senior • Remote
14,000 - 19,000 PLN
Wroclaw, Poland
Project overview
The project focuses on modernizing a mobile SDK used for digital fraud prevention and customer authentication within financial services. You will contribute to building a secure, scalable, and performance driven SDK designed for integration into a wide range of external Android applications.
Team
You will work in a distributed cross functional team including Android engineers, backend developers, and security specialists. The team collaborates across regions, following shared engineering practices and contributing to design decisions and system improvements.
Position overview
We are looking for a Senior Android Developer who will lead the technical design and implementation of an Android SDK modernization initiative. You will define architecture, validate migration strategies, develop proof of concept components, and establish engineering standards for distribution, testing, and security.
Technology stack
Kotlin, Java, Coroutines, Flow, Gradle, Maven, AAR, ProGuard, R8, WorkManager, Android Keystore, EncryptedSharedPreferences, Play Integrity API, SafetyNet, JUnit, Robolectric, Espresso, AndroidX
Responsibilities
Lead the design and development of Android SDK components
Define and maintain scalable and maintainable SDK architecture
Develop proof of concept solutions to validate architectural decisions
Ensure SDK compatibility across different Android versions and device manufacturers
Establish best practices for SDK distribution, integration, and versioning
Collaborate with cross functional teams on security and compliance requirements
Optimize performance including startup time, memory usage, and binary size
Implement secure data storage and communication mechanisms
Drive testing strategy including unit, integration, and instrumentation testing
Participate in code reviews and contribute to engineering standards
Requirements
8+ years of experience in Android development
Strong proficiency in Kotlin and experience with Java interoperability
Experience building, distributing, and maintaining reusable Android SDKs or libraries
Experience with AAR packaging and artifact publishing using Maven repositories
Strong knowledge of Gradle including build configuration and customization
Understanding of ProGuard and R8 configuration and code optimization
Experience managing dependencies and ensuring compatibility with host applications
Knowledge of Android lifecycle management and background execution using WorkManager
Understanding of performance optimization and avoiding ANR and UI performance issues
Experience with Android security features including Android Keystore and encryption mechanisms
Familiarity with Play Integrity API or SafetyNet and certificate pinning
Experience with performance monitoring and profiling tools
Experience with testing frameworks including JUnit, Robolectric, and Espresso
Nice to have
Experience working in financial services or regulated environments
Exposure to sensor based data processing using Android SensorManager
Knowledge of API desugaring and backward compatibility strategies
Understanding of SDK footprint optimization techniques
Experience contributing to architecture guidelines or internal engineering standards
What We Offer:
Vacation days: Up to 26 business days per year.
10 illness/special days off per year (fully paid, no medical papers needed) for all contract types
Health and life insurance (Luxmed)
MyBenefit platform with Multisport option
Internal psychological support service
English language classes from the first working day
Access to external learning platforms: O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training
Flexible workplace: work from the office, from home, or choose a hybrid option
Tech Skills Mentoring Program
Opportunities to develop as a public speaker, mentor, or technical interviewer
Fully paid idle (bench) when not involved in a project
Certification reimbursement (AWS, GCP, Microsoft, etc.)
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Hybrid
Warsaw, Poland
🏢 Summary: Senior Android Developer role focused on building business-critical native Android applications in Kotlin for next-generation premium electric vehicles. The position combines hands-on development with technical ownership, including code reviews and mentoring, in a complex automotive environment. Strong emphasis on quality, performance, scalability, and integration-focused functionality. 🗂️ Requirements: 5+ years Android application development experience, Strong experience with native Android development in Kotlin, Solid understanding of Android development lifecycle, Strong knowledge of Kotlin Coroutines and asynchronous programming, Experience with software design patterns and modular architecture, Experience building business-critical and integration-focused features, Experience with unit testing and debugging, Ability to maintain high code quality standards, Experience working with Jira and Confluence, Upper-Intermediate English or higher 📃 Skills: Kotlin, Android, Coroutines, UnitTesting, Jira, Confluence, Embedded, Automotive 🏢 Description: About the project We are looking for a Senior Android Developer to join an innovative automotive project focused on next-generation electric mobility solutions . You will work with a European R&D center delivering premium digital products and technologies for some of the world’s leading automotive brands. The project is focused on building business-critical Android applications that support the future of premium electric vehicles . This is a great opportunity to join a fast-paced, engineering-driven environment where quality, performance, and reliability are essential. Your role As a Senior Android Developer , you will be responsible for designing and developing native Android applications in Kotlin , with a strong focus on business logic, integrations, code quality, and maintainability . This role combines hands-on development with technical ownership — including code reviews, mentoring, and cross-team collaboration in a complex automotive environment. Tech stack / environment Kotlin Native Android Kotlin Coroutines Unit testing Jira / Confluence Automotive / Embedded environment What you’ll do Design and develop native Android applications in Kotlin Build and maintain business-critical features and integration-related functionality Write clean, maintainable, and testable code Apply design patterns and best engineering practices to create scalable and well-structured solutions Collaborate with cross-functional teams in a complex product environment Perform code reviews and support high engineering standards Contribute to unit testing , bug fixing, and continuous quality improvements Help solve technical challenges and communicate solutions clearly Support and mentor other team members in mobile development What we’re looking for 5+ years of experience in Android application development Strong hands-on experience building native Android applications in Kotlin Solid understanding of the Android development lifecycle Strong knowledge of Kotlin Coroutines and asynchronous programming Experience writing maintainable, testable, and well-structured code Experience designing and developing business-critical and integration-focused functionality Good understanding of software design patterns and modular application architecture Experience with unit testing , debugging, and code quality practices Ability to work independently in a fast-paced environment Strong communication skills and ability to explain technical challenges and solutions clearly Experience working with Jira and Confluence Upper-Intermediate English or higher Nice to have Experience in the Embedded Automotive domain Experience with Head Unit Android Apps Experience in technically complex, multi-team product environments Perks and Benefits: Flexible work schedule Fixed financial bonus issued upfront on a quarterly basis, covering the average market price of private medical care and sport card - B2B contract Present on the occasion of birthday, wedding, child birth E-learning accounts for Coursera, O'Relly, Udemy Corporate language school
Technology
DCV Technologies
Senior Android Mobile Developer
Senior
Hybrid
Warsaw, Poland
🏢 Summary: Senior Android Mobile Developer role on a large-scale financial/payments platform focused on Token ID Android tools development. The position involves building and enhancing Android applications and backend components in a high-performance, secure, and scalable environment using modern technologies. Hybrid work from Warsaw with a long-term engagement on a globally distributed system. 🗂️ Requirements: Minimum 7+ years of experience in Android development, Strong experience with backend development using Spring Boot, Hands-on experience with Kubernetes and Docker, Experience with Jenkins for CI/CD, Proficiency in Java 21, Experience with SQL databases, Experience building and consuming REST and Web Services, Experience with IntelliJ, Experience with GenAI tools including Claude Code, Ability to develop and integrate Android applications with backend services 📃 Skills: Android, Java, SpringBoot, Kubernetes, Docker, Jenkins, IntelliJ, SQL, REST, WebServices, GenAI, Claude, CI/CD 🏢 Description: Senior Android Mobile Developer 📌 We’re looking for an experienced Senior Android Mobile Developer to join a fast-paced, high-impact project in the financial / payments domain. You’ll be working on a large-scale, globally distributed platform that processes millions of transactions and powers critical payment flows used worldwide. The project focuses on performance, security, and scalability, with strong engineering standards and modern technologies. 📍 Hybrid from Warsaw - 2-3 days per week Role Details: Duration: Minimum 6 months and will be extended Years of exp: Minimum 7+ Years Details about the project they would be working on: Token ID Android Tools development Job description: Mandatory skills : Android Development, Spring boot, k8s, Docker, Jenkins, IntelliJ, claude code, GenAI, Java 21, SQL, rest, Web Services Roles and Responsibilities: Develop and maintain new features for Android test tools and their backend components. Contribute to the design, development, and enhancement of various Android‑based tool applications used within the Token ID ecosystem. Deliver the following engagement components: Issuer Mobile Application TR Mobile Application Terminal Mobile Application Demo Wallet Ensure high‑quality code, performance optimization, and smooth integration with backend services. Collaborate with cross‑functional teams to support the full development lifecycle, including design, development, testing, and deployment. Troubleshoot issues, debug applications, and contribute to continuous improvements. ✅ Benefits: Work with modern technologies and international teams Long-term and stable cooperation Professional growth opportunities 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk
Technology
ITDS
Mid-Level Android Developer – Digital Banking Infrastructure
Mid
Hybrid
Warsaw, Poland
16,800 - 20,160 PLN
🏢 Summary: Mid-Level Android Developer role focused on building secure, scalable mobile banking applications using Kotlin and modern Android technologies. The position involves implementing new features, ensuring high code quality through automated testing, and contributing to application architecture. Hybrid work model based in Warsaw with significant remote flexibility. 🗂️ Requirements: Minimum 3 years of Android development experience, Strong proficiency in Kotlin, Commercial experience with Jetpack Compose, Ability to read and modify Java code, Experience with unit and integration testing, Knowledge of continuous integration practices, Understanding of clean code and software quality principles, Communicative English, Communicative Polish, Legal right to work in the EU 📃 Skills: Kotlin, Android, JetpackCompose, Java, CI, UnitTesting, IntegrationTesting, CleanCode 🏢 Description: Unleash innovation in digital banking — craft seamless, secure mobile experiences for thousands! Warszawa-based opportunity with hybrid work model (2 days in the office/month). As a Mid-Level Android Developer , you will be working for our client, a major player in the online banking industry that is building innovative mobile solutions to provide secure, reliable, and user-friendly experiences for millions of customers. You will be responsible for designing and implementing new functionalities, ensuring high code quality through automated testing, and actively participating in the development of scalable applications. This role offers the opportunity to influence the architecture of key projects and support the growth of cutting-edge digital banking services. Your main responsibilities: Implement new functionalities on Android using Kotlin Monitor and resolve application issues in production and development environments Ensure high code quality by writing unit, automated, and integration tests Lead project, programming, and deployment activities Collaborate with cross-functional teams to define and refine technical requirements Review and improve application performance and scalability Contribute to the ongoing evolution of Android application architecture Mentor junior developers and provide technical guidance You're ideal for this role if you have: At least 3 years of experience developing solutions for the Android platform Excellent proficiency in Kotlin and solid understanding of Android-specific development Strong commercial experience with Jetpack Compose Ability to read, understand, and modify code written in Java Familiarity with continuous integration practices and tools Proven experience in creating unit, automated, and integration tests Strong knowledge of software quality principles and clean code practices Problem-solving and analytical mindset with attention to detail Ability to communicate in English for technical documentation It is a strong plus if you have: (optional) Experience in Agile methodology Knowledge of Accessibility in Jetpack Compose Experience with Jira, Git, Confluence Experience working as a DevOps Language Required for the role: Communicative Polish Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.
Technology
ITDS
Mid-Level Android Developer – Digital Banking Solutions
Mid
Hybrid
Lodz, Poland
16,800 - 21,840 PLN
🏢 Summary: Mid-Level Android Developer role focused on building secure, high-quality mobile banking applications using Kotlin and modern Android technologies. The position involves implementing new features, ensuring code quality through testing, optimizing performance, and contributing to application architecture in a hybrid work model. 🗂️ Requirements: Minimum 4 years of Android development experience, Strong proficiency in Kotlin, Commercial experience with Jetpack Compose, Ability to read and modify Java code, Experience with unit, automated, and integration testing, Knowledge of clean code and software quality principles, Familiarity with continuous integration tools and practices, Technical leadership or mentoring experience, Good command of Polish, Legal right to work in the European Union 📃 Skills: Kotlin, Android, JetpackCompose, Java, CI, UnitTesting, IntegrationTesting, CleanCode, Git, Jira, Confluence, Accessibility, DevOps 🏢 Description: Unleash innovation in digital banking — craft seamless, secure mobile experiences for thousands! Lodz-based opportunity with hybrid work model (2 days in the office per month). As a Mid-Level Android Developer , you will be working for our client, a major player in the online banking industry dedicated to building innovative mobile solutions. Your work will help deliver secure, reliable, and user-friendly experiences to millions of customers, shaping the future of digital banking. Join us to be part of a forward-thinking team that champions technological excellence and impactful solutions. Your main responsibilities: Implement new functionalities on Android using Kotlin Monitor and resolve application issues in production and development environments Ensure high code quality by writing unit, automated, and integration tests Lead project, programming, and deployment activities Collaborate with cross-functional teams to define and refine technical requirements Review and optimize application performance and scalability Contribute to the evolution of Android application architecture Mentor junior developers and provide technical guidance You're ideal for this role if you have: At least 4 years of experience developing solutions for the Android platform Excellent proficiency in Kotlin and solid understanding of Android-specific development Strong commercial experience with Jetpack Compose Ability to read, understand, and modify code written in Java Familiarity with continuous integration practices and tools Proven experience in creating unit, automated, and integration tests Strong knowledge of software quality principles and clean code practices Problem-solving and analytical mindset with attention to detail Ability to communicate in English for technical documentation Experience providing technical leadership or mentoring within development teams Nice to have: (optional) Experience in Agile methodology Knowledge of Accessibility in Jetpack Compose Experience with Jira, Git, Confluence Experience working as a DevOps Language Required for the role: Polish — good command required Eligibility to work in Europe: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English or Polish) along with a statement confirming your consent to the processing and storage of your personal data. You can also send your CV directly to cv-recruitment@itds.pl.