• Own the reliability, performance, and scalability of Extensions capabilities end to end • Design and build distributed workflows that are efficient, reproducible, and observable in production • Collaborate closely with Data Scientists on the team to deeply understand requirements and translate them into engineering decisions • Identify and resolve performance bottlenecks, ensuring Extensions capabilities meet the latency and throughput demands of enterprise deployments • Contribute to architectural decisions around how Extensions integrates with the broader NEXUS backend • Write clean, well-tested Python code and hold a high bar for code quality across the team • Contribute to internal engineering documentation and help establish best practices for backend development within the team

• Je trekt concepten van Symfony door naar Drupal en gebruikt deze zoals het de best practices beaamt. • Je vertaalt een business nood naar een technische oplossing. • Je bouwt en implementeert samen met je team de innovatieve projecten in Drupal volgens de agile methode. • Je ondersteunt het team als technisch expert en vertrekt hierbij steeds vanuit de noden van de klant. • Je verzorgt de communicatie met klanten waar nodig.

• You will work on the backend platform supporting highly scalable mobile games, played by millions of people every day. • You will work closely with client-developers & game designers starting from feature design to delivery, validation, and iteration. • The responsibilities are cross-functional, ranging from infrastructure, API design & coding all the way to client-side integration (we are using Golang).

Role Description We are expanding our engineering capabilities and looking for a Senior Backend Engineer to join our growing team. In this role, you will play a key part in designing and building scalable, high-performance backend systems, contributing to the development of robust services that support a range of internal and customer-facing products. You will work in a fast-paced environment where system performance, scalability, and reliability are critical. Location: Remote from Poland (Contractor arrangement) or Cyprus Onsite (Relocation support provided) Reporting to: Group CTO What you will do: - Design and implement scalable Python microservices in a distributed architecture. - Build and optimize high-performance backend systems, ensuring scalability and reliability under high load. - Integrate and manage third-party APIs and external services. - Collaborate with cross-functional teams to define technical solutions and system design approaches. - Work with AWS services (e.g. Lambda, cloud infrastructure) to architect and deploy solutions. - Improve and maintain CI/CD pipelines and deployment processes in collaboration with DevOps. - Lead and contribute to code reviews, ensuring high engineering standards. - Identify system bottlenecks and drive performance and scalability improvements. - Troubleshoot complex production issues in distributed systems. - Contribute to technical discussions and guide best practices within the team. Qualifications - 5+ years of backend engineering experience with strong Python expertise. - Proven experience building and scaling microservices architectures. - Strong knowledge of FastAPI or Django. - Experience working with AWS (including services such as Lambda). - Strong experience with Docker and containerization. - Experience with CI/CD pipelines (GitLab preferred). - Strong understanding of distributed systems and high-load environments. - Experience designing and optimizing systems for performance and scalability. - Solid experience integrating third-party APIs. - Strong problem-solving and analytical skills. - Excellent communication skills and ability to work in a remote-first environment. - Experience in fintech, payments, or financial platforms. - Experience with high-throughput systems (e.g. trading, payments, real-time processing). - Familiarity with event-driven architecture (Kafka, messaging systems). - Experience mentoring or supporting other engineers. Hiring Process - Step 1 – Thinking in Action (40 minutes): Your first conversation will be with our Talent Acquisition team. We'll explore your background, career journey, motivations, and overall fit for the role. As part of this discussion, you'll also complete a short technical screening that will be reviewed by our engineering team. - Step 2 – Build in Production (60–90 minutes): Meet with the Team Lead and technical experts for a practical assessment. Depending on the role, this may involve a live coding exercise or a real-world scenario designed to evaluate your technical skills, problem-solving approach, and ability to work through challenges similar to those faced by our teams. - Step 3 – Final Interview (45 minutes): The final stage is a group interview with senior members of our Technology squad, which may include the CTO, CPO, and Team Lead. Together, we'll discuss team fit, collaboration style, expectations from both sides, and any remaining questions about the role, team, or technology domain. Benefits - Grow with Us: Annual Learning Budget for professional development (eligible after probation)—because your growth is our growth. - Celebrate Together: We bring colleagues from all offices together for unforgettable company celebrations. - Global Collaboration & Events: Opportunities to participate in international company events and initiatives, connecting with colleagues from all regions and contributing to a truly global community. This is a fully remote role for candidates based in Poland. If you are open to a relocation to Cyprus, your assigned Talent Acquisition Partner will walk you through the specific working arrangements and any applicable conditions during the process. Let's embark on a journey to redefine the landscape of payments together. We're not just offering a role; we're inviting you to be a part of something bigger. Join our team, and let's innovate, disrupt, and lead the future of payments. Together, we can make an impact that resonates. Welcome to the team! Please review our Privacy Policy to understand how we process your personal data during the recruitment process: https://payabl.com/privacy-policy