Android Engineer for Payment Terminals

The Mission

Wallee Group is a leader in advanced payment solutions providing robust scalable and secure payment technology across multiple markets. Our solutions power payment experiences across Android-based payment terminals mobile devices and integrated merchant environments.

With teams across several countries we work collaboratively to build reliable payment technology that operates in highly regulated and security-critical environments.

The Role

Wallee is looking for an experienced Android Engineer to join our payment terminal engineering team in Vilnius.

You will work primarily on our Android-based payment terminal platform developing and maintaining software that sits at the heart of payment processing on physical terminals.

This is not a typical consumer Android application role. You will work close to the Android platform payment applications terminal hardware network communication payment protocols and security-sensitive transaction flows.

You will collaborate with engineers across Android TypeScript backend payment protocols QA and certification to deliver reliable software used on payment terminals in production.

The Impact Youll Make

• Build Payment Terminal Software: Develop and maintain Android applications and components running on dedicated payment terminals.
• Work Across the Platform: Integrate Android components with payment applications device services hardware interfaces APIs and communication protocols.
• Develop Reliable Transaction Flows: Implement and troubleshoot payment functionality where correctness stability and predictable behaviour are critical.
• Champion Security: Work with security-sensitive systems involving TLS certificates cryptographic operations secure key handling and PCI requirements.
• Solve Complex Problems: Investigate issues across application Android platform device network and payment protocol layers.
• Drive Engineering Quality: Review code improve architecture write automated tests and help maintain a reliable and maintainable codebase.
• Collaborate Across Teams: Work closely with Product QA certification teams and other engineers to turn payment requirements into production-ready solutions.
• Provide Technical Expertise: Support complex technical investigations and help other teams understand terminal behaviour APIs and integration requirements.

What You Bring to the Table

• Strong Android Experience: Solid professional experience developing Android software using Kotlin and Java.
• Android Platform Knowledge: Good understanding of Android application architecture services lifecycle IPC threading networking and debugging.
• Engineering Fundamentals: Ability to design maintainable software understand existing complex systems and confidently troubleshoot production issues.
• Network Knowledge: Practical experience with TCP/IP HTTP and TLS.
• Security Mindset: Understanding of security fundamentals such as encryption certificates symmetric/asymmetric cryptography hashing and secure data handling.
• Quality First: You write readable maintainable documented and well-tested code rather than simply making things work.
• TypeScript: Experience with TypeScript is a strong advantage as parts of our payment terminal stack use it.
• Communication: Professional fluency in English and the ability to collaborate effectively in an international engineering environment.

Experience with payment terminals payment systems embedded Android devices POS systems EMV PCI or payment protocols is an advantage but not required.

Why Join Wallee

• Modern Workspace: A beautiful office in the heart of Vilnius comfortable bright and collaboration-ready.
• True Flexibility: Flexible daily hours and a 4-week Work from Anywhere policy every year.
• Interesting Engineering Problems: Work on software where Android hardware security networking and financial technology meet.
• Real Ownership: Work in a flat engineering environment where you can influence technical decisions and take ownership of meaningful parts of the platform.
• Growth & Culture: Competitive compensation of gross/month depending on experience seniority and technical expertise plus personal development budgets and company events.
• The Perks: Fresh fruit snacks and high-quality coffee.

Dont tick every box Neither do most great hires. If the role sounds interesting and you have strong Android fundamentals wed still like to hear from you.