Senior Backend Python Engineer (Gateway) - Relocation to Cyprus

The role is about: The Gateway Related Projects team is committed to designing, developing, and implementing payment solutions that guarantee stable and consistent payment processing. Our goal is to create successful products and establish a reputation as a dependable partner for our clients.In this role, you will work in a fast-paced environment where system performance, scalability, and 99.9% reliability are critical to our core transaction flow.Location: Cyprus — Onsite (employment contract with relocation support)Reporting to: Technical LeadWhat you will do: Dual-Track Engineering: Support and extend the existing Perl-based payment gateway while simultaneously designing and building high-performance microservices in Python.System Modernization: Architect and implement scalable, distributed Python services to replace legacy components, ensuring reliability under high-load production environments.High-Stakes Integrations: Integrate and manage complex third-party APIs and external payment services, ensuring seamless transaction flows and robust error handling.Technical Leadership: Lead code reviews, drive engineering best practices, and identify system bottlenecks to continuously improve performance and scalability.Architecture & Deployment: Collaborate with DevOps to improve CI/CD pipelines (GitLab) and architect solutions using AWS services (Lambda, ECS, etc.).Product-Focused Delivery: Go beyond the "how" of the code—bring a product mindset to understand the business logic, user impact, and the "why" behind every feature you build.Production Ownership: Troubleshoot and resolve complex production issues in distributed systems, maintaining a "zero-downtime" mentality for our merchants.What we need:Python Mastery: 5+ years of backend engineering experience with deep Python expertise (FastAPI and AsyncIO preferred).Polyglot Mindset (Perl): Experience with Perl is a major plus, but a genuine eagerness to learn and work within Perl production code is