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Paymentology Logo Paymentology · IT - Software Development

Senior Software Engineer

Poland · Job Posted January 26, 2026
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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.

Job Responsibility

  • 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

Requirements

  • Significant commercial experience with modern Java 15 (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

Experience in fintech, payments, or other high-throughput/regulated domains

What we offer

  • 100% remote, globally distributed team
  • 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
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