Backend Software Engineer Python C# AI

Client Server Ltd.; Greater London; Hybrid; GBP 85,000 - 100,000; Full time

Benefits offered by this job

Bonus

Pension

Life Assurance

Critical Illness Cover

Employee Assistance Programme

Company Share Scheme

Enhanced paternity leave

Wellness benefits

Job summary

Client Server Ltd. in London is seeking a Backend Software Engineer to join a team focusing on Python and/or C#, with a strong emphasis on cloud-native development and AI integration.

You will contribute to architecture decisions, drive best practices, and help embed AI into the software lifecycle using Claude and other tools.

Qualifications

• Backend software engineering with Python or C#
• Strong CS fundamentals: OOP, multithreading, design patterns
• Knowledge of cloud-native architectures (Azure/AWS) and microservices
• Experience with React or Angular frontend connectivity is a plus
• Interest in embedding AI into software using patterns and best practices (Claude)

Responsibilities

• Backend and cloud-native development
• Explore how AI can improve engineering productivity and product features
• Contribute to architecture and engineering practices while collaborating with teams

Skills

Backend engineering

AI adoption

Communication

Problem solving

Tools

Python

C#

React

Angular

Azure

AWS

Terraform

Kubernetes

Docker

CI/CD

Job description

London, Greater London | £85k - £100k per year

Backend Software Engineer / Developer (Python C# AI) London / WFH to £100k

Are you a Backend Software Engineer with Python and / or C# coding skills combined with a strong knowledge of software engineering best practices and system design?

You could be joining a global reinsurance group, building the technology platform behind a diverse portfolio of insurance products used across its international businesses.

The technology team is small, agile and heavily focused on greenfield development, giving you the opportunity to have real influence over architecture, engineering practices and how AI is embedded into the software development lifecycle.

As a Backend Software Engineer, you'll be an individual contributor working primarily on backend and cloud-native development. A major part of the role will be exploring how AI can improve both engineering productivity and the products themselves - using tools such as Claude alongside strong software design principles, patterns and engineering best practice.

Location / WFH:

You'll join colleagues in plush City offices with onsite gym and barista, three days a week, with flexibility to work from home the other two days.

About you:

• You have strong backend software engineering skills, with Python or C# (or both!)
• You have a strong knowledge of Computer Science fundamentals such as OOP, multithreading, Design Patterns and are comfortable with system design
• You understand what makes a good frontend and how to ensure connectivity between front and backend systems, React or Angular skills preferred
• You have a good understanding of cloud native architectures (Azure / AWS), event driven systems, microservices, CI/CD, Terraform, Kubernetes, Docker
• You're keen to use and adopt more AI into processes and the product, you understand "milestone development" and what good system design looks like, how to get the optimum results from AI with proper use of design patterns and best practices - they use Claude but open to experience with other tools
• You're collaborative with great communication and problem solving skills, ideally with experience in a start-up / small team environment

What's in it for you:

As a Backend Software Engineer you will receive a competitive package:

• Salary to £100k
• Bonus
• Pension, Income Protection, Life Assurance, Critical Illness Cover, Employee Assistance Programme
• Company Share Scheme
• Enhanced paternity leave and benefits
• Wellness benefits such as free PT sessions at the onsite gym, massages
• Medical and Dental Health insurance
• 25 days holiday
• Perks such as "Kids Pass" for discounted days out, smart tech scheme
• Volunteering and charity days