Senior Android Developer (Kotlin/Java)

3M HEALTHCARE; Ireland; On-site; EUR 70,000 - 110,000; Full time

Job summary

U.S. Bank / Elavon is seeking a Senior Android Developer to join the Payments Engineering team.

You will design, build, and maintain Android applications for our payment terminal platform, ensuring secure, reliable payment experiences for merchants and customers. You will work closely with product, QA, and backend teams in a regulated environment, mentoring junior engineers and contributing to architectural decisions while applying Kotlin/Java skills, Android architecture components, and

Qualifications

• 5+ years of Android development with Kotlin and/or Java.
• Strong knowledge of Android architecture components and design patterns (MVVM/MVP).
• Hands-on with RESTful APIs, DI, coroutines, and Jetpack Compose.
• Experience with hardware-integrated Android systems is a plus.
• Solid secure coding and performance optimization practices.
• Ability to work independently in a fast-paced, regulated environment.

Responsibilities

• Design, build, and maintain Android applications for our payment terminal platform.
• Develop high-quality, scalable code in Kotlin and Java.
• Lead technical design discussions and contribute to architectural decisions.
• Integrate with payment SDKs, hardware components, and backend services.
• Ensure compliance with payment industry security standards (PCI, EMV).
• Troubleshoot performance issues and optimize app responsiveness.
• Mentor junior engineers and share best practices across the team.
• Collaborate with cross-functional teams to deliver features from concept to production.

Skills

Android development

Kotlin

Java

MVVM

MVP

RESTful APIs

Coroutines

Jetpack Compose

Dependency Injection

Hardware integration

Security best practices

Git

Mockito

JUnit

JaCoCo

Tools

Mockito

JUnit

JaCoCo

Job description

At U.S. Bank, we’re on a journey to do our best. Helping the customers and businesses we serve to make better and smarter financial decisions, enabling the communities we support to grow and succeed in the right ways, all more confidently and more often—that’s what we call the courage to thrive. We believe it takes all of us to bring our shared ambition to life, and each person is unique in their potential. A career with U.S. Bank gives you a wide, ever-growing range of opportunities to discover what makes you thrive. Try new things, learn new skills and discover what you excel at—all from Day One.

As a wholly owned subsidiary of U.S. Bank, Elavon is committed to building the platforms and ecosystems that help over 1.5 million customers around the world to achieve their financial goals—no matter what they need. From transaction processing to customer service, to driving innovation and launching new products, we’re building a range of tailored payment solutions powered by the latest technology. As part of our team, you can explore what motivates and energizes your career goals: partnering with our customers, our communities, and each other. We actively uphold transparent and fair hiring practices that support individual opportunity, inclusive culture, and career mobility across all levels of our organisation. We offer meaningful opportunities for growth, a culture of inclusion, and a strong commitment to transparency and integrity in everything we do.

Job Description

Senior Android Developer – Payments (Kotlin/Java)

We are looking for an experienced Senior Android Developer to join our Payments Engineering team. In this role, you will design, develop, and maintain applications running on our Android‑based payment terminal platform, ensuring secure, reliable, and seamless payment experiences for merchants and customers. This is a hands‑on development role working closely with product, QA, and backend engineering teams to deliver high‑quality, high‑performance solutions in a regulated environment.

Key Responsibilities

• Design, build, and maintain Android applications for our payment terminal platform.
• Develop high‑quality, scalable code in Kotlin and Java.
• Lead technical design discussions and contribute to architectural decisions.
• Integrate with payment SDKs, hardware components, and backend services.
• Ensure compliance with payment industry security standards (PCI, EMV, etc.).
• Troubleshoot performance issues and optimize app responsiveness.
• Mentor junior engineers and contribute to best practices across the team.
• Collaborate with cross‑functional teams to deliver features from concept to production.

Required Skills & Experience

• 5+ years of experience in Android development using Kotlin and/or Java.
• Strong understanding of Android architecture components, design patterns (MVVM/MVP), and UI/UX best practices.
• Hands‑on experience with RESTful APIs, dependency injection, coroutines, and Jetpack Compose.
• Experience working with hardware‑integrated Android systems (e.g., terminals, embedded devices) is a strong advantage.
• Solid understanding of secure coding practices and performance optimization.
• Ability to work independently in a fast‑paced, highly regulated environment.
• Familiarity with Git and testing frameworks/libraries like Mockito, Junit and Jacoco.

Nice to Have

• Payments industry experience (e.g., EMV, contactless, card schemes, terminal protocols).
• Experience with Android AOSP or embedded Linux environments.
• Knowledge of CI/CD pipelines for Android (Gradle, GitHub Actions, GitLab CI, etc.).
• Familiarity with encryption, tokenisation, or other financial security concepts.

Location expectations

This role requires working from a U.S. Bank location three (3) or more days per week.

Accessibility

We are committed to providing an inclusive and accessible recruitment experience. If you need adjustments at any stage of the application or hiring process, please contact your recruiter for guidance and support.

Total Rewards

U.S. Bank is committed to fair, equitable, and transparent compensation practices in line with local regulatory and legal requirements. Our total rewards approach is designed to attract, retain, and support top talent while ensuring equal pay for work of equal value. We offer a market-competitive compensation package that includes:

• Clearly defined salary ranges aligned with industry benchmarks and internal equity standards.
• Performance-based incentives for eligible employees (as defined by relevant plan rules), awarded through transparent, objective criteria that recognize both individual and company performance.
• Inclusive equitable benefits that are accessible to all employees and focused around our 3 main pillars of financial wellbeing, health & wellness).
• Continuous development opportunities including training, education support, and career progression pathways based on inclusive and transparent criteria.
• Employee recognition programs that celebrate achievements and milestones for all.

We regularly review our compensation and benefits to ensure they remain competitive, inclusive, and responsive to employee needs and market trends. Further details of the compensation package will be provided upon application. We encourage candidates to explore the full value of our offer, including monetary and non‑monetary benefits, at Employee benefits and development | U.S. Bank | Elavon.

Closing Date

Posting may be closed earlier due to high volume of applicants. We aim to provide timely updates throughout the process and encourage early applications to ensure consideration.