Key Responsibilities API & Backend Development ▸ Design and develop high-performance REST APIs using FastAPI and Python. ▸ Build and maintain async endpoints with Pydantic models, dependency injection, and middleware. ▸ Write clean, modular, and well-documented code following PEP 8 and project conventions. ▸ Integrate third-party services and external APIs as required. Database Management ▸ Design relational database schemas optimised for performance and scalability. ▸ Write and optimise complex SQL queries, stored procedures, and migrations. ▸ Work with ORM tools such as SQLAlchemy or Tortoise ORM for database interaction. ▸ Ensure data integrity, indexing strategies, and query performance tuning. Version Control & Collaboration ▸ Manage code using Git with branching strategies (Git Flow / trunk-based development). ▸ Conduct and participate in code reviews via pull requests with constructive feedback. ▸ Maintain well-written commit messages and keep the repository history clean. Agile & Team Collaboration ▸ Participate actively in sprint planning, daily standups, retrospectives, and backlog grooming. ▸ Break down requirements into actionable technical tasks and story points. ▸ Collaborate cross-functionally with frontend, QA, product, and data teams. ▸ Communicate blockers early and contribute to continuous improvement of team processes. DevOps & Infrastructure Basics ▸ Containerise applications using Docker and manage multi-service setups with Docker Compose. ▸ Support CI/CD pipeline setup and maintenance (GitHub Actions, GitLab CI, or similar). ▸ Understand Linux server basics: file system, permissions, process management, and SSH. ▸ Monitor application health using logging frameworks and basic observability tools. Testing & Quality Assurance ▸ Write unit, integration, and API tests using pytest and HTTPX test client. ▸ Maintain meaningful test coverage and enforce quality gates in CI pipelines. ▸ Identify and resolve bugs, performance bottlenecks, and security vulnerabilities. Required Qualifications Must Have ▸ 3+ years of professional backend development experience with Python. ▸ Strong proficiency in FastAPI (routing, dependencies, background tasks, middleware, OAuth2). ▸ Solid understanding of SQL — joins, aggregations, window functions, indexing, transactions. ▸ Experience with at least one relational database: PostgreSQL, MySQL, or SQLite. ▸ Proficient with Git: branching, merging, rebasing, conflict resolution. ▸ Familiarity with Agile/Scrum methodologies and working within sprint-based teams. ▸ Experience with REST API design principles: versioning, authentication, error handling. ▸ Working knowledge of Docker for local development and deployment. ▸ Basic Linux command-line proficiency. Good to Have ▸ Experience with async Python (asyncio, httpx, aiofiles). ▸ Knowledge of Redis for caching and background task queues (Celery / ARQ). ▸ Familiarity with cloud platforms — AWS, GCP, or Azure (S3, RDS, EC2). ▸ Exposure to Kubernetes or container orchestration basics. ▸ Understanding of API security: JWT, OAuth2, rate limiting, CORS.