Senior Site Reliability Engineer

About this role

Duplo, based in Lagos, is looking for a Senior Site Reliability Engineer to strengthen the reliability, scalability and resilience of its backend systems. The role focuses on designing robust infrastructure, defining service boundaries and reliability standards, and owning observability, incident response, and postmortems. You will collaborate with product, compliance, finance operations, support, and external providers, while mentoring other engineers and guiding architectural decisions. The position requires extensive experience in SRE or related roles, with deep knowledge of Kubernetes, Docker, AWS, and fintech or high-stakes systems. The company builds a platform that powers banking-as-a-service APIs to help financial products launch quickly.

What you would do

• Lead design and implementation for high-risk, high-complexity reliability initiatives for backend systems.
• Define maintainable infrastructure architecture and guide reliability standards across the engineering team.
• Design with operational safety and compliance in mind for money movement edge cases.
• Own end-to-end observability including metrics, logging, tracing and alerting.
• Build and refine incident response processes; lead production incidents and drive postmortems.
• Collaborate with product, compliance, finance operations, support, backend engineering, and external providers.
• Review code and infrastructure with engineers; engage in pairing and technical discussions.
• Make decisions on architectural trade-offs, deployment strategies and rollout safety; escalate where needed.
• Drive capacity planning, performance tuning and cost efficiency across infrastructure.
• Define and track SLOs/SLIs to prioritise reliability work alongside feature delivery.

What they are asking for

• Minimum 7 years in SRE, DevOps or backend infrastructure roles.
• Deep expertise in Kubernetes, Docker and AWS in production environments.
• Strong scripting/programming ability (TypeScript or other tooling language).
• Practical PostgreSQL operations at scale (replication, backup/recovery, tuning).
• Practical Redis experience for caching, coordination, rate-limiting and distributed locking.
• Strong observability tooling knowledge (Prometheus, Grafana, Datadog, ELK or equivalent).
• Experience designing and maintaining CI/CD, infrastructure as code (Terraform) and secrets management.
• Experience in fintech or high-stakes systems with provider integration resilience and compliance considerations.
• Proven incident ownership from detection to postmortem and outcomes.
• Excellent communication across engineering, product, compliance and external partners.

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