Lead Software Engineer Python API

Company: Client Server
Apply for the Lead Software Engineer Python API
Location: London
Job Description:

Overview

In this Lead Software Engineer role, you’ll stay hands-on while guiding a technical team to build a complex SaaS calculation platform for cyber security insurance. You’ll shape architecture, define requirements, and align engineering work with business goals in a fast-growing, global environment. You’ll mentor engineers, enforce quality and CI/CD practices, and collaborate with Product Owners to prioritise work. This is a chance to influence technical direction and deliver scalable, robust software. You’ll work from London or hybrid with regular office days.

Pay / Benefits

  • salary up to 110k
  • bonus
  • 25 days holiday
  • Private Medical Insurance (including dental and optical cashback)
  • Life Insurance
  • Income Protection Pension

Responsibilities

  • Provide technical leadership and hands-on contribution to design and implementation
  • Define technical requirements and ensure alignment with business objectives
  • Lead architectural decisions and technical designs in collaboration with stakeholders
  • Facilitate code reviews, maintain coding standards, and promote quality assurance
  • Drive development efficiency initiatives (e.g., CI/CD) and best practices
  • Mentor and guide small to medium technical teams
  • Coordinate with Product Owners to prioritise tasks and allocate resources

Key requirements

  • Proven experience leading and mentoring small to medium technical teams
  • Strong Python backend development skills
  • Experience building FastAPI applications
  • Good knowledge of Azure
  • Experience handling data at scale
  • Strong SQL skills (PostgreSQL, SQL Server) with Azure Databricks experience highly preferred
  • Solid CS fundamentals (data structures, design patterns, OOP)
  • Collaborative and pragmatic communication skills
  • collaborative
  • pragmatic
  • strong communication
  • Python
  • FastAPI
  • Azure

Posted: September 14th, 2026