Today
Backend Developer
PISI integrated Services Limited
Software & Data
Lagos Full Time
IT & Telecoms NGN 400,000 - 600,000
Easy Apply
Skills Required
fast API Python Celery Redis RESTful API PostgreSQL VAS Integration Telecom Billing SystemJob Summary
Highly skilled and proactive Backend Developer with strong experience in FastAPI to maintain, improve, and scale a robust, secure, and high-performance backend while integrating with telecom billing systems, gaming engines, and third-party APIs.
- Minimum Qualification : Degree
- Experience Level : Entry level
- Experience Length : 2 years
Job Description/Requirements
Responsibilities:
- Maintain and improve existing FastAPI-based backend systems for Spinlotto.
- Collaborate with frontend developers, product managers, and QA to implement new features.
- Ensure system scalability, performance, and security.
- Integrate with VAS (Value-Added Services) platforms, telecom APIs, and mobile billing gateways.
- Troubleshoot and resolve backend issues and bugs.
- Write clean, well-documented, and efficient code.
- Optimise database queries and manage schema migrations.
- Deploy and monitor backend services (Docker, CI/CD pipelines). Participate in daily standups, sprint planning, and milestone tracking.
Requirements:
- Proven experience with Python and FastAPI (minimum 2 years).
- Strong understanding of RESTful API development and asynchronous programming (async/await).
- Experience with SQLAlchemy, PostgreSQL or other relational databases.
- Familiarity with telecom billing systems or VAS integration (preferred but not mandatory).
- Hands-on experience with Docker, Git, and CI/CD pipelines.
- Experience building scalable systems with attention to performance and security.
- Ability to write clear documentation and work collaboratively in remote/distributed teams.
- Experience with Celery, Redis, or background job queue
- Familiarity with JWT, OAuth2, and secure authentication systems.
- Prior experience in gaming, fintech, or lottery platforms.
- Experience deploying applications on cloud infrastructure (AWS, DigitalOcean, GCP, etc.).