Junior Python Software Engineer Location: Hybrid - London Employment Type: Full-time My client, a growing Fintech, is looking for a Python Software Engineer. What You''ll Do Design, build, and maintain Python services that power critical financial workflows. Work with modern data processing tools like pandas and polars to transform and analyze large datasets. Build async Python services using asyncio, and develop event-driven systems integrating AWS services (Lambda, SQS, EventBridge, ECS, etc.). Write reliable, maintainable, and well-tested code - using pytest, type hints, and dataclasses. Collaborate with other engineers through pair or mob programming, pull request reviews, and knowledge-sharing sessions. Help improve our CI/CD pipelines and ensure code quality through automated testing, linting, and type checking. Contribute to our culture of pragmatic TDD/BDD, balancing speed with long-term maintainability. Work closely with product and business stakeholders to deliver high-impact features. Support and evolve our PostgreSQL-based data storage and querying layers. What We''re Looking For 1- 3 years of professional software development experience, primarily with Python Solid experience with Python''s standard library and familiarity with modern idioms (eg, dataclasses, type annotations, async/await). Experience with data transformation and analysis libraries like pandas or polars. Comfortable writing unit and integration tests with pytest. Practical experience with Po