Backend Tech Lead (.NET / C#)

Company Description

247Bet is a cutting-edge sports betting and gaming platform designed for Africa's dynamic, connected audience. More than just a platform for placing bets, 247Bet integrates social interaction, entertainment, and responsible gaming to foster a sense of community and connectivity. With a team of talented engineers, designers, and strategists, the company is redefining modern betting as smart, social, and seamless. Join us in shaping the future of entertainment and connection in the betting and gaming industry.

Role Description

This is a full-time hybrid role for a Backend Tech Lead specializing in .NET and C#. The position is based in Lagos. The Backend Tech Lead will be responsible for designing, developing, and maintaining scalable backend services and APIs, ensuring security and performance optimization, and collaborating closely with the product and frontend teams. Additionally, the role includes mentoring junior developers, performing code reviews, and contributing to architectural decisions to align the technology with business goals. This is a high-impact leadership role where you'll design production-scale infrastructure handling real-time betting operations, payment processing, and social features for thousands of concurrent users.

What You'll Do

•   Lead the design and delivery of core backend services: wallet, bet engine, live betting, user identity, copy-bet infrastructure, and social feed

•   Own the technical architecture across .NET 8+, PostgreSQL, Redis, Kafka, and AWS/EKS

•   Set and enforce engineering standards: code reviews, system design, testing, observability, and deployment practices

•   Mentor and grow a team of senior backend engineers — through 1:1s, design reviews, and pairing

•   Collaborate with Product and Design to break down features into reliable, scalable system designs

•   Drive incident response, post-mortems, and reliability improvements across backend services

•   Stay close to the codebase — we expect our Tech Lead to be a strong individual contributor, not just a manager

What We're Looking For

•   6+ years of backend engineering experience, with at least 2 years in a tech lead or principal engineer capacity

•   Deep expertise in C# / .NET — ideally .NET 6+ / .NET 8

•   Strong fundamentals in distributed systems, API design, event-driven architecture, and data modelling

•   Hands-on experience with PostgreSQL, Redis, and Kafka (or equivalent message broker)

•   Solid understanding of cloud infrastructure — AWS preferred; experience with Kubernetes/EKS a strong plus

•   Track record of mentoring engineers and raising the bar for a team

•   Excellent communication and the ability to work across product, mobile, and frontend teams

•   Prior experience in fintech, gaming, or high-transaction-volume platforms is a strong advantage

Nice to Have

•   Experience building or scaling a betting, gaming, or real-time financial platform

•   Familiarity with BFF (Backend for Frontend) patterns for mobile and web

•   Exposure to observability tooling — Datadog, OpenTelemetry, or equivalent

•   Experience working across African markets, especially Nigeria

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