Senior Python Software Engineer - £90k - £100k
Base pay range
Senior Software Engineer (Python / AWS)
Location: London or Manchester
About the Role
We’re looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. You’ll lead the delivery of cross-service features within a modern cloud platform, making pragmatic architectural choices and setting high standards for engineering quality, reliability, and performance.
You’ll play a key role in shaping technical direction, mentoring engineers, and ensuring the systems you build are secure, observable, and resilient.
Key Responsibilities
- Lead complex delivery: Drive the end-to-end design and implementation of Python-based microservices and cloud-native solutions hosted on AWS.
- Architect and optimise systems: Define service boundaries, data ownership, and failure-recovery patterns for scalable, high-availability systems.
- Raise engineering quality: Champion best practices for testing, observability, and security. Review critical PRs and guide technical decisions across the team.
- Operate and improve production systems: Monitor performance, reliability, and cost efficiency. Lead incident response and drive continuous improvement.
- Mentor and grow others: Support engineers through pairing, feedback, and documentation to strengthen technical capability across the team.
- Contribute to technical roadmap: Collaborate with Product, Design, and Data teams to align on priorities and ensure value is delivered incrementally.
Core Tech Stack
- Languages: Python (FastAPI, Flask, or Django)
- Data & Messaging: PostgreSQL, Redis, Kafka or SQS
- CI/CD & Infrastructure: Docker, Terraform, GitHub Actions, CloudFormation
- Testing: Pytest, integration and load testing frameworks
Key Skills & Expertise
- Proven experience designing and delivering production systems using Python on AWS.
- Strong understanding of distributed systems, API design, and event-driven architectures.
- Deep knowledge of system observability, logging, and performance optimisation.
- Familiarity with modern security and data-privacy best practices.
- Excellent communicator who can document and articulate technical trade-offs clearly.
- Ownership: Takes full responsibility for systems from design to operation.
- Pragmatism: Balances long-term architecture with delivery velocity.
- Influence: Raises standards and mentors others across engineering disciplines.
- Growth Mindset: Continuously improves processes, tools, and team capability.
Success Indicators
- Reliable delivery of complex Python/AWS initiatives.
- Reduction in latency, error rates, and infrastructure spend.
- Strong incident management and operational excellence.
- Documented technical decisions and clear architectural rationale.
- Evident impact through mentoring and team enablement.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Information Technology
Industries
Staffing and Recruiting
Referrals increase your chances of interviewing at Creo Recruitment by 2x
Get notified about new Software Engineer jobs in London Area, United Kingdom.
#J-18808-Ljbffr