Senior Software Engineer

Paymentology

1d•Remote

About The Position

Unstoppable starts with people. The future of payments is being built today, and at Paymentology, we are looking for people who want to help shape it. We power card issuing for leading banks, fintechs and digital brands across the globe, and as we continue to grow, we are looking for curious, ambitious people who thrive on solving complex challenges, embrace innovation and want to make a tangible impact at global scale. Our Engineering culture values autonomy, excellence, ownership, and curiosity. We encourage engineers to lead solutions end-to-end, mentor others, and continuously improve how we build and operate software. If you’re excited by solving complex global payments challenges and enjoy working with smart, kind, mission-driven people — this is the place for you.

Requirements

Significant commercial experience with modern Java 15 (We’re currently moving to 21. As a guide, multiple projects with 5+ years of experience.
Proven experience designing, building and maintaining distributed systems and microservices
Deep understanding of Object-Orientated programming
Familiarity with event-driven architectures or Domain Driven Design.
Strong system design experience, including designing scalable, resilient, and high-performance distributed applications, with the ability to make architectural decisions and evaluate technical trade-offs.
Love to work using TDD
Strong grasp of relational databases (PostgreSQL, MySQL) and data modeling.
Solid understanding of cloud infrastructure (AWS preferred), containerisation, CI/CD, and Infrastructure-as-Code.
Experience in fintech, payments, or other high-throughput/regulated domains.
Most importantly, a desire to learn, grow and collaborate with an amazing team

Responsibilities

Lead the design and development of backend services, distributed systems, and APIs.
Own features end-to-end (architecture, coding, testing, observability, and deployment).
Write clean, maintainable, well-tested code, following engineering best practices and test-driven development.
Break down complex technical work into manageable chunks
Work in a collaborative, cross functional, agile team environment
Mentor associate and mid-level engineers, fostering a culture of technical excellence
Identify, document, and deliver technical improvements (performance, reliability, scalability).
Participate in incident response and support rotations