Senior Backend Engineer (NestJS/Express) at Ubulu Africa

Role Overview

• We are seeking a Senior Backend Engineer with a proven track record of building scalable APIs and powering data-heavy workflows (e.g., dynamic tables, filtering, analytics). You will be joining a fast-moving, impact-driven team and playing a key role in designing and maintaining the core services behind our high-growth platforms.
• The ideal candidate is based in Lagos, able to work independently in a remote-first setup, and available for occasional in-person meetings as required. You must be highly proficient in NestJS and Express.js, and comfortable owning backend responsibilities with minimal supervision.

What You Will Do

• API Development: Design, build, and maintain robust and scalable RESTful APIs using NestJS and Express.js.
• Backend Logic for UIs: Structure backend logic effectively for table-heavy user interfaces, including implementing efficient pagination, filtering, and sorting functionalities.
• Database Performance: Implement performant database queries and aggregation pipelines to ensure optimal application speed and responsiveness, especially with MongoDB or similar NoSQL databases.
• Cross-functional Collaboration: Collaborate closely with frontend engineers to define clear API contracts and resolve integration needs, ensuring seamless data flow and user experience.
• Code Quality: Write clean, testable, and maintainable code adhering to best practices and coding standards.
• System Design & Optimisation: Participate actively in system design discussions and performance optimisation initiatives to enhance the overall architecture and efficiency of our platforms.
• Documentation: Document endpoints, services, and key technical decisions for knowledge sharing and team collaboration.

What You Will Bring

• Experience: 4+ years of backend engineering experience with production NestJS/Express systems.
• Database Proficiency: Strong proficiency with MongoDB or similar NoSQL databases, including experience with data modelling and complex query optimisation.
• Data-heavy Applications: Proven experience working with data-heavy applications, tables, and analytics platforms.
• API Principles: Strong understanding of REST API principles, design patterns, and authentication mechanisms.
• Technical Skills: Familiarity with Git for version control, asynchronous operations, and middleware architecture.
• AWS & CI/CD : Experienced deploying production grade services on AWS using CI/CD pipelines. 
• Autonomy & Delivery: Ability to work independently, manage tasks effectively, and consistently meet delivery timelines in a remote-first environment.
• Location: Based in Lagos and available for occasional on-site meetings as required.

Nice To Have

• Experience with Redis, background job processing, or caching solutions.
• Exposure to GraphQL, microservices architectures, or event-driven architecture.
• Familiarity with analytics or reporting dashboards development.
• Previous work experience in startup environments or on innovation projects.