Android Engineer for Payment Terminals
Wallee Group AG26 days ago
Vilnius, LithuaniaSenior
Responsibilities
- Develop and maintain Android applications and components for dedicated payment terminals.
- Integrate Android components with payment applications, device services, hardware interfaces, APIs, and communication protocols.
- Implement and troubleshoot reliable payment functionality and security-sensitive transaction flows.
- Investigate issues across application, Android platform, device, network, and payment protocol layers.
- Review code, improve architecture, write automated tests, and maintain a reliable codebase.
- Collaborate with Product, QA, certification teams, and engineers to deliver production-ready payment solutions.
- Support complex technical investigations and advise teams on terminal behavior, APIs, and integration requirements.
Requirements
- Professional experience developing Android software with Kotlin and Java.
- Understanding of Android application architecture, services, lifecycle, IPC, threading, networking, and debugging.
- Ability to design maintainable software, understand complex systems, and troubleshoot production issues.
- Practical experience with TCP/IP, HTTP, and TLS.
- Understanding of encryption, certificates, symmetric and asymmetric cryptography, hashing, and secure data handling.
- Ability to write readable, maintainable, documented, and well-tested code.
- Professional fluency in English and effective collaboration skills in an international engineering environment.
- TypeScript experience is advantageous.
- Experience with payment terminals, payment systems, embedded Android devices, POS systems, EMV, PCI, or payment protocols is advantageous but not required.
Benefits
- Competitive compensation of €2,500–€6,000 gross per month, depending on experience, seniority, and technical expertise.
- Flexible daily hours and a four-week Work from Anywhere policy each year.
- Modern office in central Vilnius.
- Personal development budgets and company events.
- Fresh fruit, snacks, and high-quality coffee.
Tech Stack
Categories
About Wallee Group AG
Wallee Group AG builds an omnichannel payments platform for merchants, offering an online payment gateway, in‑store card terminals, and developer APIs to accept and reconcile payments across channels. It sells payment processing and related services on a transaction-fee basis, with plugins for common e‑commerce systems and support for multiple payment methods. The privately held company is headquartered in Winterthur, Switzerland, and operates across several European markets.