Backend Developer (Volunteer)
Summary
Volunteer Backend Engineer who designs and builds RESTful APIs with Fastify and Node.js, integrates PostgreSQL and third-party services, and collaborates with DevOps, frontend, and mobile teams on fintech and healthtech products.
Compensation: No equity
About Us
Ndel Technologies Ltd is a technology company building Africa’s next-generation digital infrastructure in fintech and healthtech. Our flagship products include:
BawaHealth – a telemedicine platform connecting patients, doctors, and hospitals through secure video consultations.
We’re a passionate and fast-growing team of builders creating technology that empowers people and drives inclusion across Africa.
About the Role
We’re looking for a Volunteer Backend Engineer with solid experience in Fastify (Node.js) to help design, build, and scale our backend systems. You’ll collaborate closely with our DevOps, frontend, and mobile teams to deliver performant, secure, and maintainable APIs that power real-world applications.
This is a volunteer opportunity — ideal for engineers eager to gain experience with production systems, work in an agile startup environment, and contribute to impactful African tech solutions.
Key Responsibilities
Design and implement RESTful APIs using Fastify and Node.js.
Integrate with PostgreSQL, and third-party APIs (payments, authentication, etc.).
Collaborate with the DevOps team to optimize deployment pipelines and system reliability.
Ensure scalability, performance, and security across backend services.
Write clean, maintainable, and testable code.
Participate in code reviews and contribute to continuous improvement.
Support the integration of backend logic with mobile and web frontends.
Preferred Skills & Experience
Proficiency with Node.js and Fastify framework (required).
Strong understanding of RESTful API design and database architecture.
Experience with PostgreSQL, Supabase, or Firebase.
Knowledge of authentication (JWT, OAuth) and authorization best practices.
Familiarity with Docker, GitHub Actions, and AWS (or similar).
Understanding of error handling, logging, and API documentation (Swagger/OpenAPI).
Excellent teamwork, problem-solving, and communication skills.
Bonus Points
Experience with payment systems, webhooks, or transaction processing.
Prior work with microservices or serverless architecture.
Familiarity with TypeScript and GraphQL.
Exposure to fintech or healthtech platforms.
What You’ll Gain
Hands-on experience in a real production environment.
Mentorship from experienced engineers and tech leads.
Opportunity to work on scalable systems powering fintech and telemedicine apps.
Priority consideration for future paid or equity-based positions at Ndel Technologies.
Certificate of contribution and professional reference upon completion.