Principal Backend Engineer (.NET / C#) at 247Bet

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• • Principal Backend Engineer (.NET / C#) at 247Bet
  • View Jobs in Raffle / View Jobs at 247Bet

  Posted: Aug 24, 2026

  Deadline: Not specified

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  247Bet is a next-generation sports betting and gaming platform built for Africa’s vibrant, connected audience. We combine social interaction, entertainment, and responsible gaming to create an experience that goes beyond placing bets — it’s about community and connection.
  

  Principal Backend Engineer (.NET / C#)

  • Job Type Full Time , Hybrid
  • Qualification BA/BSc/HND
  • Experience 8 years
  • Location Lagos
  • Job Field ICT / Computer&nbsp

  Role Description

  • This is a full-time hybrid role for a Principal Backend Engineer, based in Lagos — hybrid, with 3 days per week in the office. You'll be the most senior individual contributor on the backend, owning the architecture of a platform where real money moves through real-time systems: wallet and ledger, bet engine, live betting, settlement, copy-betting, and social infrastructure. You'll set the technical direction, make the decisions that are expensive to reverse, and remain hands-on in the code. This is a role for an engineer who has built and operated serious distributed systems at scale and wants their architectural judgement to shape a platform from its foundations.

  What You'll Do

  • Own the backend architecture across .NET 8+, PostgreSQL, Redis, Kafka, and AWS/EKS
  • Design the systems that must never be wrong: double-entry wallet ledger, bet placement and settlement, cash-out, and payment flows
  • Set standards for event-driven design, idempotency, consistency, and failure handling across all services
  • Lead the hardest technical work personally — the highest-risk integrations, the trickiest concurrency problems, the performance bottlenecks
  • Run architecture and design reviews, and mentor senior engineers into stronger system designers
  • Define non-functional requirements — latency budgets, availability targets, capacity plans for peak fixtures — and drive the platform to meet them
  • Own observability, incident response practices, and post-mortem culture across backend services
  • Evaluate build-vs-buy decisions and third-party providers (trading feeds, payments, fraud, KYC) with commercial as well as technical judgement
  • Work directly with the founders and Head of Engineering on the technical roadmap

  What We're Looking For

  • 8+ years of backend engineering experience, with several years operating at staff/principal level
  • Deep, current expertise in C# / .NET and the surrounding ecosystem
  • A proven track record architecting distributed, event-driven systems in production — ideally where money, trades, or bets flowed through them
  • Expert-level understanding of data consistency, transactions, idempotency, and exactly-once processing
  • Strong production experience with PostgreSQL, Redis, Kafka, and AWS; Kubernetes/EKS strongly preferred
  • Demonstrated ability to lead through influence: design docs, reviews, and mentorship rather than authority
  • Sound judgement on trade-offs — you know when to be rigorous and when to ship
  • Excellent written and verbal communication with technical and non-technical audiences

  Nice to Have

  • Experience in sportsbook, gaming, trading, or payments platforms specifically
  • Experience integrating managed trading/odds providers
  • Prior experience as an early or founding engineer at a startup
  • Exposure to regulatory or audit requirements in a licensed industry

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