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Team Tagline
About the role
Duplo is a Lagos-based fintech startup that enables businesses in Africa to automate their spend management, simplify cross-border payments, and control business finances all on one platform. We are backed by top investors including Tribe Capital, Commerce Ventures, Liquid2 Ventures, My Asia VC, Soma Capital, YCombinator, Oui Capital, and others. This is a unique opportunity to take a significant part in the creation of a paradigm-changing product that will impact millions.
Required Skills
Preferred Skills
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Responsibilities
- Design, develop, and maintain scalable, reliable backend systems using TypeScript and NestJS, with a focus on correctness in financial systems
- Design robust service boundaries and maintainable architecture across distributed services
- Architect and optimize PostgreSQL schemas for scale, including transaction handling, indexing strategy, and patterns that protect data correctness
- Apply Redis effectively for caching, coordination, rate-limiting, and distributed locking
- Reason effectively about deployment safety, observability, scaling, and incident diagnosis in production environments running on Docker, Kubernetes, and AWS
- Maintain strong operational understanding of configuration and secrets handling, runtime behaviour, and rollback strategy
- Work closely with DevOps to ensure infrastructure decisions support reliability; treating infrastructure as a shared concern
- Champion technical design and implementation for large, high-risk, or high-complexity initiatives
- Break down complex technical requirements into manageable, well-sequenced work
- Mentor and guide junior engineers, raising engineering standards through example
- Make sound, well-reasoned decisions on architectural trade-offs, migration approaches, and rollout safety, and know when to escalate decisions with broader business impact
- Understand edge cases in money movement and design with operational safety and compliance in mind, not just functional correctness
- Drive thorough testing practices to ensure robust, reliable code before it reaches production
- Take responsibility for overall outcomes, not just tasks
- Work seamlessly with cross-functional partners including product, compliance, finance, operations, support, QA, DevOps, and external providers, communicating clearly and adapting your approach to whoever you are working with
- Collaborate closely with fellow engineers through code review, pairing, and technical discussion, giving and receiving feedback in a way that raises the quality of the team's work, not just yours
- Create clear technical documentation for system designs, APIs, and processes
- Communicate effectively with stakeholders through technical breakdowns and status updates
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