Lead Software Engineer Python Api

Client Server; City Of London; Hybrid; GBP 90,000 - 110,000; Full time

Benefits offered by this job

25 days holiday

Private Medical Insurance (including d

Life Insurance

Pension

Subsidised gym membership

X4 paid volunteering days per year

Season ticket loan

Employee Assistance Programme

Job summary

Client Server is seeking a Lead Software Engineer in London with strong Python backend skills and leadership experience to own the technical direction of a SaaS platform. You will remain hands-on while guiding architecture, coding standards and CI/CD practices.

Hy brace hybrid work with three days in the London office and the rest remote. The role focuses on building scalable systems using FastAPI on Azure with data at scale, offering strong career progression.

Qualifications

• Lead and mentor small to medium technical teams.
• Strong Python backend software engineering skills.
• Experience building FastAPI applications.
• Good knowledge of Azure.
• Experience working with data at scale.
• Strong SQL skills (PostgreSQL, SQL Server; Azure Databricks highly preferred).
• Solid CS fundamentals (data structures, design patterns, OOP).
• Collaborative and pragmatic with strong communication.

Responsibilities

• Remain hands-on while providing technical leadership and architectural input.
• Design and implement complex solutions aligned with business objectives.
• Define technical requirements and prioritize tasks with Product Owners.
• Oversee coding standards, reviews and quality assurance practices.
• Champion CI/CD and improve development team efficiency.

Skills

Python backend

Team leadership

Data at scale

SQL (PostgreSQL/SQL Server)

Communication

Computer Science fundamentals

Collaboration

Tools

Azure

Azure Databricks

FastAPI

Job description

Lead Software Engineer / Developer (Python FastAPI Azure Databricks) London / WFH to £110k

Are you a backend focused Software Engineer with strong Python skills combined with technical / team leadership experience?

You could be progressing your career in a senior, hands‑on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly growing Cyber Security insurance markets.

As a Lead Software Engineer you'll remain hands‑on whilst providing technical leadership, designing and implementing complex solutions and ensuring the team adheres to best practices. You'll define technical requirements and ensure alignment with business objectives, contribute to architectural decisions and technical designs and collaborate with Product Owners and stakeholders to prioritise tasks and allocate resources.

You'll provide technical leadership and guidance, facilitate communication and ensure coding standards and best practices, including performing code reviews and providing constructive feedback, championing quality focused software development, enforcing quality assurance standards, processes, testing methodologies, and driving initiatives to improve the development team efficiency e.g. CI/CD.

Location / WFH:

There's a hybrid work from home model with three days a week in the high spec London, City office with rooftop bar.

About you:

• You have experience of leading and mentoring small to medium sized technical teams
• You have strong Python backend software engineering skills
• You have experience of building FastAPIs
• You have a good knowledge of Azure
• You have experience of working with data at scale
• You have strong SQL skills (PostgreSQL, SQL Server - Azure Databricks experience highly preferred)
• You have a thorough knowledge of Computer Science fundamentals including Data Structures, Design Patterns, OOP
• You're collaborative and pragmatic with great communication skills

What's in it for you:

• Salary to £110k + bonus
• 25 days holiday
• Private Medical Insurance (including dental and optical cashback)
• Life Insurance, Income Protection
• Pension
• Subsidised gym membership
• X4 paid volunteering days per year
• Season ticket loan
• Employee Assistance Programme
• Impactful role with great career progression

Lead Software Engineer Python API London, England