Senior Python Engineer (Backend and Data)

Backend and API Development Design, develop and maintain RESTful APIs and microservices using Python (FastAPI, Flask, Django) Build asynchronous, high concurrency services using asyncio, and optimise I/O operations for performance Design and maintain scalable internal web frameworks and take them to production Work with front end teams to integrate user facing features with server side logic Write clean, efficient, well documented code that follows coding standards API Security Implement authentication, authorisation and encryption across microservices Secure APIs using OAuth 2.0, JWT and API gateways Data Access and Database Management Build backend systems that serve datasets through APIs and other interfaces Implement data access layers using ORMs such as SQLAlchemy and Django ORM (models, CRUD, querying, transactions) Design and optimise database schemas for relational and NoSQL stores Tune query and database performance for fast, reliable data retrieval Data Transformation and ETL Design and maintain ETL pipelines to extract, clean, aggregate and enrich data Ensure data integrity, quality and consistency across all transformation processes Work with big data and streaming technologies such as Spark, Kafka and Hadoop Engineering Practices and DevOps Build and maintain CI/CD pipelines for automated testing and deployment Write unit and integration tests and debug production issues using logging and profiling tools Use Git for version control, branching, code reviews and pull requests Produce clear technical documentation and contribute to code reviews Preferred Skills Experience with cloud platforms (AWS, Azure or GCP) Containerisation and orchestration with Docker and Kubernetes Knowledge of data governance, compliance and data security best practices Experience in banking, fintech or other regulated environments

Desired Candidate Profile