Senior Software Engineer

At Paymentology, we’re redefining what’s possible in the payments space. As the first truly global issuer-processor, we give banks and fintechs the technology and talent to launch and manage Mastercard and Visa cards at scale - across more than 60 countries.

Our advanced, multi-cloud platform delivers real-time data, unmatched scalability, and the flexibility of shared or dedicated processing instances. It's this global reach and innovation that sets us apart.

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.

What you get to do:

We’re looking for a Senior Software Engineer to design, build, and scale Java backend services that power our global payments infrastructure. You’ll lead end-to-end delivery, contribute to technical strategy, and help raise the engineering bar across the organisation.

• 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

• This role includes participation in an on-call rotation, with on-call duties scheduled for one week out of every five weeks.

Requirements:

Experience:

• 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

What you can look forward to:

• 100% remote, globally distributed team

• We value engineers that closely understand our customers and business

• High-impact role supporting real-time global payments

• Growth path toward Senior Engineer 2, Staff Engineer, or Engineering Manager

• A diverse, mission-driven engineering culture

At Paymentology we value making a difference to the lives of the people who work for us and who live in the communities where we operate. You can look forward to working with a diverse, global team where Paymentologists at all levels play an important part in our global mission to advance the world through payments and make a difference on a global scale.

We are an equal opportunity employer committed to fostering a diverse and inclusive workplace where everyone can thrive. We welcome applications from people of all backgrounds and do not discriminate on any unlawful ground, including race, colour, ethnicity, sex, gender, pregnancy, marital status, family responsibility, age, disability, sexual orientation, religion, belief, language or HIV status.

Paymentology will never request any form of payment from applicants at any stage of our recruitment process, including for applications, interviews, training or job placements. If anyone asks you for money while claiming to act on behalf of Paymentology, please treat this as fraudulent and do not make any payment. All legitimate Paymentology vacancies are advertised via our official careers page , and our recruitment emails are sent only from official Paymentology domains.