Senior Python Software Engineer - £90k - £100k

Creo Recruitment

England

Hybrid

GBP 90,000 - 100,000

Full time

14 days+

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Job summary

A leading recruitment agency is seeking a Senior Python Software Engineer with strong AWS experience to design and scale Ad-Tech systems. The role involves leading complex delivery of Python-based microservices, mentoring engineers, and improving production systems. Ideal candidates should have profound knowledge of distributed systems, API design, and a growth mindset. This full-time position offers opportunities for professional development and is located in London or Manchester, with a salary range between £90k - £100k.

Qualifications

Deep experience in Python and AWS required.
Proven experience with production systems and cloud-native solutions.
Excellent communication skills are essential.

Responsibilities

Lead the design and implementation of Python-based microservices.
Define service boundaries and optimize high-availability systems.
Champion best practices for testing and observability.

Skills

Python

AWS

Distributed systems

API design

Event-driven architectures

System observability

Security best practices

Documentation

Tools

FastAPI

Flask

Django

PostgreSQL

Redis

Kafka

SQS

Docker

Terraform

GitHub Actions

CloudFormation

Pytest

Job description

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.