Senior Python Developer FastAPI Azure

Client Server Ltd.; Greater London; Hybrid; GBP 90,000 - 110,000; Full time

Benefits offered by this job

25 days annual leave

Private Medical Insurance (including,

Life Insurance

Pension

Subsidised gym membership

Season ticket loan

Employee Assistance Programme

Volunteering days

Job summary

Client Server Ltd. in London is seeking a Senior Python Developer to own backend systems, play a hands-on leadership role, and shape the architecture of a complex SaaS calculation platform for cyber security insurance markets.

You will design, implement, and review code for FastAPI services, work with Azure (AWS optional), mentor engineers, and drive best practices, CI/CD, and quality assurance. This hybrid role offers a London office presence three days a week, with remote work options, a

Qualifications

• Strong Python backend experience with hands-on development.
• Experience building FastAPI services at scale.
• Azure familiarity; AWS acceptable.
• Experience leading and mentoring tech teams.
• Solid CS fundamentals: data structures, design patterns, OOP.

Responsibilities

• Lead technical direction and architecture for backend systems.
• Implement complex features and ensure code quality.
• Mentor engineers and conduct code reviews.
• Collaborate with Product Owners to prioritise work.
• Ensure CI/CD and testing practices.

Skills

Python

FastAPI

Azure

Leadership

CI/CD

Tools

Azure DevOps

Git

Job description

London, Greater London | £90k - £110k per year

Senior Python Developer / Software Engineer (FastAPI Azure) 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 Senior Python Developer 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.

As a senior team member 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 strong Python backend software engineering skills
• You have experience of building FastAPIs
• You have a good knowledge of Azure, will also consider AWS experience
• You have experience of working with data at scale
• You have experience of leading and mentoring small to medium sized technical teams
• 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