Android Engineer
Wallee Group AG7 hours 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 transaction flows.
- Work with TLS, certificates, cryptographic operations, secure key handling, and PCI requirements.
- 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.
- Provide technical expertise on terminal behavior, APIs, and integration requirements.
Requirements
- Strong professional experience developing Android software with Kotlin and Java.
- Good 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.
- Commitment to readable, maintainable, documented, and well-tested code.
- Experience with TypeScript is a strong advantage.
- Professional fluency in English and effective collaboration skills in an international engineering environment.
- Experience with payment terminals, payment systems, embedded Android devices, POS systems, EMV, PCI, or payment protocols is advantageous but not required.
Benefits
- Vilnius office in a comfortable, bright, collaboration-ready workspace.
- Flexible daily hours and a 4-week Work from Anywhere policy each year.
- Opportunity to work on engineering problems combining Android, hardware, security, networking, and financial technology.
- Flat engineering environment with meaningful technical ownership.
- Personal development budgets and company events.
- Fresh fruit, snacks, and high-quality coffee.
Tech Stack
Categories
Mobile
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.