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Senior Platform Engineer

Lemfi · London, United Kingdom

External listingfull-time11 days ago

About The Role

Join LemFi, the financial engine for underserved populations worldwide. As a Senior Platform Engineer, you will design, build, and own our internal developer platform, enhancing the experience of our engineers and driving efficiency across our cloud infrastructure. You will have a significant impact on our engineering workflow and be a key player in our mission to provide financial services to those who need it most.

  • Design, build, and own the internal developer platform, ensuring it is self-service, AI-powered, and enhances the experience of internal engineers.
  • Act as the internal product manager for the platform, collecting requirements from engineers, prioritizing features, and maintaining a visible roadmap.
  • Set and enforce platform standards, including Infrastructure as Code (IaC), Continuous Integration/Continuous Deployment (CI/CD) pipelines, and observability.
  • Comfortable working without a spec: you have operated in fast-moving environments where you set the direction as much as you follow it
  • Strong DevOps and platform engineering fundamentals: Kubernetes, CI/CD, observability stacks, IaC, and the judgement to know when to use each
  • Experience treating internal engineers as customers, gathering requirements, running a backlog, measuring adoption, not just shipping tools and hoping people use them
  • Proven track record building an internal developer platform or developer experience function from scratch, not just maintaining one someone else built
  • You've built or contributed meaningfully to an internal developer portal (Backstage, Port, or a comparable in-house system) and can speak concretely to what worked, what didn't, and why
  • Deep AWS expertise: you have designed cost-efficient, production-grade cloud architectures and you can defend every line of your Terraform
  • Proficient in at least one scripting or backend language (Python, Go, or equivalent) and confident building automation and tooling, not just configuring managed services
  • You actively build AI-powered tooling into platform and infrastructure workflows, cost anomaly detection, intelligent alerting, automated runbooks, not just use AI in your editor
  • Previous fintech or regulated-industry experience where security and compliance constraints (PCI DSS, SOC2, or equivalent) shaped your platform decisions
  • Exposure to multi-region or multi-currency infrastructure at scale, ideally serving markets in Africa, Europe or the Americas

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