Android Engineer

Wallee Group

. Develop and maintain Android applications and components running on dedicated payment terminals .

Posted 9/30/2026full-timeVilnius • LithuaniaMid-LevelSenior💰 €2,500 - €6,000 per monthWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in developing and maintaining Android applications, particularly in payment systems, with a strong focus on secure coding practices and integration with hardware and APIs. Proficient in troubleshooting complex issues across various layers of application and network protocols.

Highest-signal resume keywords

Android Application DevelopmentKotlin ProgrammingJava ProgrammingPayment Systems IntegrationCryptographic Operations

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Android Application ArchitectureTCP/IPHTTPTLSEncryptionSymmetric CryptographyAsymmetric CryptographyHashingAutomated TestingDebugging

Soft Skills

CollaborationProblem-SolvingEffective Communication

Tools & Technologies

Payment TerminalsPOS SystemsEmbedded Android Devices

Industry Keywords

PCI ComplianceEMVPayment Protocols

Tech Stack

Tools & technologies

AndroidJavaKotlinTCP/IPTypeScript

About the role

Key responsibilities & impact

Develop and maintain Android applications and components running on 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 solutions
Support complex technical investigations and explain terminal behaviour, APIs, and integration requirements

Requirements

What you’ll need

Solid professional experience developing Android software using Kotlin and Java
Good understanding of Android application architecture, services, lifecycle, IPC, threading, networking, and debugging
Ability to design maintainable software, understand existing complex systems, and troubleshoot production issues
Practical experience with TCP/IP, HTTP, and TLS
Understanding of encryption, certificates, symmetric/asymmetric cryptography, hashing, and secure data handling
Ability to write readable, maintainable, documented, and well-tested code
Professional fluency in English
Ability to collaborate effectively in an international engineering environment
Experience with TypeScript is a strong advantage
Experience with payment terminals, payment systems, embedded Android devices, POS systems, EMV, PCI, or payment protocols is an advantage but not required

Benefits

Comp & perks

Flexible daily hours
4-week Work from Anywhere policy every year
Personal development budgets
Company events
Fresh fruit, snacks, and high-quality coffee
Modern, comfortable, bright office in the heart of Vilnius