AI Engineer C# Python

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

Benefits offered by this job

Bonus

Pension

Life Assurance

Company Share Scheme

Paternity leave

Wellness benefits

Private medical

Dental

25 days holiday

Kids Pass

Smart tech scheme

Volunteering days

Job summary

Client Server Ltd. in London is seeking a hands-on Full Stack Engineer with strong backend C#/.NET and frontend React/TypeScript skills, plus a keen interest in AI-enabled development. The role focuses on building scalable cloud-native systems and influencing architectural decisions.

You will work in a small, agile team, split between three days in our City offices and two days remote, with opportunities to shape AI-enhanced products using Claude or similar tools.

Qualifications

• Strong backend skills with C# .NET and frontend skills with React/TypeScript.
• Knowledge of AI integration and proper design patterns.
• Solid CS fundamentals: OOP, multithreading, design patterns.
• Experience with cloud-native architectures (Azure/AWS) and microservices.

Responsibilities

• Develop backend services and cloud-native solutions with a focus on scalable architecture.
• Embed AI capabilities into products using best practices and design patterns.

Skills

C# .NET

React

TypeScript

AI integration

Cloud native

CI/CD

Terraform

Kubernetes

Docker

Tools

Claude

Azure

AWS

Terraform

Docker

Kubernetes

Job description

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

Full Stack Engineer / Developer (C# React AI) London / WFH to £100k

Are you a Full Stack Engineer with a deep knowledge of software engineering best practices and system design combined with a strong knowledge of AI agentic development?

You could be progressing your career in a senior, hands‑on Full Stack Engineer role 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 Full Stack 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 C# .Net, combined with front end development skills, using React, TypeScript or similar
• 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 have a strong knowledge of Computer Science fundamentals such as OOP, multithreading, Design Patterns and are comfortable with system design
• You have a good understanding of cloud native architectures (Azure / AWS), event driven systems, microservices, CI/CD, Terraform, Kubernetes, Docker
• 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 Full Stack 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