SENIOR BACKEND ENGINEER AT DUPLO | BACKEND ENGINEER JOBS IN LAGOS

About Company:

Duplo is building the platform to power the next generation of financial services. Our mission is to help companies expand financial access for all. Our simple and powerful banking-as-a-service API helps companies quickly launch financial products.

Job Description:

1. Backend Development:
   • 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
2. Cloud Infrastructure:
   • 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
3. Technical Leadership:
   • 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
4. Quality & Risk Ownership:
   • 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 
5. Collaboration:
   • 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
6. Documentation and Communication:
   • Create clear technical documentation for system designs, APIs, and processes
   • Communicate effectively with stakeholders through technical breakdowns and status updates

Requirements:

1. Technical Skills:
   • Minimum of 7 years of backend engineering experience, with deep expertise in TypeScript and NestJS
   • Strong command of PostgreSQL, including schema design for scale, transaction handling, and indexing strategy
   • Practical expertise with Redis for caching, coordination, rate-limiting, and distributed locking
   • Strong operational understanding of Docker, Kubernetes, and AWS
   • Experience working within Agile/Scrum methodologies
2. Software Engineering:
   • Demonstrated experience in fintech systems, including orchestration, provider integration resilience, and compliance-sensitive design
   • Deep understanding of sound architectural trade-offs and patterns that protect correctness in financial systems
   • Strong commitment to writing clean, testable, maintainable code
3. Professional Skills:
   • A track record of owning complex, high-stakes technical work from design through to production, and standing behind the outcomes
   • Strong communication skills, with the ability to work effectively across engineering, product, compliance, and external partners
   • A demonstrated habit of catching your own issues before they reach QA or production, and of treating failure as something to learn from rather than deflect
4. Experience:
   • Experience mentoring or raising the technical standard of a team, not just delivering individually
   • Demonstrated experience working in fintech or another high-compliance industry

Salary

Application Closing Date: Not specified

Application Instructions:

CLICK ON THE LINK BELOW TO APPLY