Backend Team Lead - Payment Systems (.NET) Lead the engineering behind fast, reliable global payments. Apply Now! B2Tech is seeking a Backend Team Lead to join our Payment Systems team, leading the development of scalable, reliable, and high-performance services on the .NET stack. This is a hands-on leadership role combining technical ownership with people development. You’ll shape the architecture of our payment platform, lead complex integrations with payment providers, banks, and mobile money operators, and support a team of engineers in delivering resilient systems that perform reliably at scale. YOUR IMPACT Technical: Design and deliver scalable, robust, and high-performance backend solutions using .NET, PostgreSQL, and Entity Framework Core. Optimize PostgreSQL queries, indexes, and data models to maintain data integrity and performance as transaction volumes scale. Drive architectural decisions across our microservices and gRPC-based payment gateway, selecting the right patterns and technologies for each challenge. Own the technical quality of integrations with payment providers, banks, and mobile money operators, from initial onboarding through production. Build resilient integrations that handle real-world payment scenarios, including timeouts, retries, idempotency, reconciliation, and provider-specific behavior. Maintain high engineering standards across delivered solutions, with a strong focus on reliability, maintainability, and performance. Drive continuous technical improvement, evaluating and introducing new technologies where they deliver meaningful value. Leadership: Lead a team of .NET developers responsible for payment processing, orchestration, and third-party provider integrations. Mentor engineers on software design, code quality, architectural patterns, and engineering best practices. Lead effective code reviews, providing clear, constructive feedback that raises engineering standards across the team. Create an environment of ownership, open communication, collaboration, and continuous improvement. Partner with Product, QA, and other stakeholders to define priorities, manage expectations, and deliver against agreed timelines. OUR REQUIREMENTS Technical: Excellent knowledge of the .NET technology stack, including C#/.NET and REST and gRPC APIs. Strong relational database expertise, ideally PostgreSQL, including schema design, indexing, and query optimization. Strong hands-on experience with Entity Framework Core and modern data-access patterns. Proven experience making architectural and implementation-level design decisions within distributed or microservices-based systems. Solid experience integrating external APIs and providers, including authentication, adapters, retries, idempotency, and failure handling. Strong understanding of clean code, software design patterns, SOLID principles, and maintainable software architecture. Experience with real-time or near-real-time event-driven systems using Kafka or comparable messaging technologies. Proven ability to diagnose and resolve performance issues within high-throughput, transactional systems. Strong analytical, troubleshooting, and problem-solving skills when working with complex production systems. Comfortable working within an Agile/Scrum engineering environment. Leadership: Proven ability to lead, mentor, and develop software engineers while maintaining strong technical credibility. Excellent communication and stakeholder management skills, with the ability to collaborate effectively across technical and non-technical teams. Nice-to-Have: Experience with AWS or another major cloud platform and cloud-native architectures. Working knowledge of Kubernetes and containerized application deployment. Familiarity with Terraform or comparable Infrastructure-as-Code technologies. WHAT WE OFFER Annual Discretionary Performance Bonus 💷 Annual Salary Review 💵 21 Days of Paid Leave 📢 Hybrid Working Model 🏠 Semi-Flexible Working Hours ⌚ Provident Fund 💰 Medical Insurance Coverage ❤️🩹 Subsidized Sports Benefits App Subscription 🏋️ €100 Monthly Lunch Allowance + €9 for Each In-Office Day 😋 Weekly Happy Hour 🤠 Exciting Career Paths 🎯 Personalized Learning & Development Programs 📖 Birthday Leave 😎 Marriage Leave 💍 A Variety of Employee Perks 🎫 Department R&D Role Back-End Team Lead Locations Cyprus Remote status Hybrid Employment type Full-time Workplace Type Hybrid About B2Tech B2Tech is a leading omnichannel technology solutions provider to the Sportsbook & iGaming industry with a strong presence and focus on emerging markets.