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Senior C# / .NET Engineer (Fintech / Payments / Digital Platforms/ ERP/ Assessment Platform)

KloudOpp Limited

Lagos, Nigeria Permanent

Published 1 month ago · Expires 3 weeks from now

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Job description

A dynamic team is expanding and looking for the right talent. Role Summary
  • We are hiring a Senior C# / .NET Engineer with 10+ years of hands-on backend engineering experience to design, build, and scale mission-critical platforms across:
  • Payments & Switching
  • Digital Banking
  • Crypto & Web3
  • Digital Lending
  • Fintech Infrastructure / BaaS
  • Personal Finance / Wealth
  • FX & Remittance
  • ERP & Commerce (including Fashion & Retail platforms)
  • This is not an oversight or advisory role.
  • You must be:
  • Deeply hands-on
  • Obsessive about clean architecture, SOLID principles, and best-practice code
  • Comfortable owning production systems
  • Result-driven, because your performance is tied to monthly milestones in an Agile delivery environment
  • You will build and operate high-scale, secure, event-driven, cloud-native systems used in real financial workflows.
Tech Stack (You Must Be Strong In These):
  • Backend: C# (.NET 8 / .NET Core), ASP.NET Core, Web APIs, Background Workers
  • Databases: PostgreSQL (primary), MongoDB (unstructured data)
  • Cloud: AWS (EC2, S3, RDS, Lambda), Azure (App Services, Functions, Event Grid, Service Bus)
  • Caching: Redis
  • Messaging / Events: RabbitMQ (or Azure Service Bus / similar)
  • Architecture: Serverless, Event-Driven, Microservices, Clean Architecture, API-first systems
What You’ll Do
  • Architect and build scalable, secure backend systems for fintech-grade workloads
  • Design and implement event-driven and serverless architectures on AWS & Azure
  • Build and maintain high-performance APIs using ASP.NET Core
  • Own database design, performance tuning, and data integrity (PostgreSQL & MongoDB)
  • Implement message-driven systems using RabbitMQ and background workers
  • Write clean, testable, production-grade C# code following Clean Architecture and SOLID principles
  • Enforce engineering best practices: code reviews, architecture standards, CI/CD discipline
  • Collaborate in an Agile environment with clearly defined monthly delivery milestones
  • Take responsibility for system reliability, scalability, performance, and security
  • Mentor other engineers and raise the overall engineering bar
  • Work closely with product and business to ship real business outcomes, not just features
Requirements: What We’re Looking For
  • 10+ years of professional backend engineering experience
  • Deep...

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