Freelance Android Payment Systems Engineer for Testing

For our client we are currently looking for a Senior Android Tester (m/f/d)

General information
Reference: 177658
Location: Limerick/Bratislava
Start: 01.06.2026 (ASAP)
Volume: Full time (100%)
Languages: English

Your Skills
- Proficient in Java, Kotlin, Android, and C; experience with REST services and Android ROM is a plus.
- Familiarity with EMVCo, PCI compliance, and secure payment systems.
- Strong leadership, problem-solving, and communication skills.
- Technologies: Android SDK, REST APIs, Docker, Jenkins, Git.
- Payment Focus: EMV-compliant, PCI-secure mobile payment systems for SmartPOS and SoftPOS platforms.

Your Tasks
- Test and validate Android applications and integrated payment services to ensure functionality, security, and usability.
- Verify integration of Back End payment systems using XML/SOAP, TCP, and HTTP/S protocols, ensuring correct and reliable communication.
- Identify, diagnose, and report technical issues across the software stack to maintain system stability and performance.
- Review and consult on architectural designs to support the development of secure, scalable, and compliant solutions.
- Support team development through feedback and collaboration, contributing to effort estimation and risk analysis.
- Work closely with developers, product managers, and stakeholders to ensure technical solutions align with business goals and quality standards.

Interested?
We look forward to receiving your application documents in electronic form.

Your Contact:
Tobias Gollmann
(see below)