Senior Software Engineer

Company: Paymentology
Location: Athens
Posted on: April 1, 2026

Job Description:

At Paymentology , we’re building the global payments platform of the future. Our mission is to empower banks, fintechs, and innovators with modern, scalable, cloud-first issuing and processing solutions. As a fully distributed organisation operating across 60 countries, we move fast, think globally, and build technology that supports millions of transactions daily. 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. 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 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. 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. Nice to have, but not critical, experience in fintech, payments, or other high-throughput/regulated domains. Most importantly, a desire to learn, grow and collaborate with an amazing team 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

Keywords: Paymentology, Lorain , Senior Software Engineer, Engineering , Athens, Ohio