Senior Software Developers

Location: Cambridge (3 days/week on-site)
Contract Rate: Up to £590/day (Inside IR35)
Start Date: October 2025
Job Type: Contract
 
Overview: We're hiring experienced and passionate Senior Software Developers to join a cutting-edge AI Core Services team in Cambridge. This is a unique opportunity to help shape the future of AI infrastructure by building scalable, secure, and cloud-native platform services and APIs that will power AI adoption across a global client portfolio.
You'll work in a fast-paced, agile environment with a start-up mindset-rapid prototyping, continuous improvement, and a strong focus on production-grade delivery.

What You'll Be Working On:

• Designing and developing AI-enabling platform services and public APIs
• Building secure, scalable, and standards-compliant cloud-native solutions
• Collaborating within a Scrum team to deliver innovative AI capabilities
• Driving rapid prototyping and iterative development cycles

• Hands-on experience with Large Language Models (LLMs) and understanding of performance vs. cost trade-offs
• Familiarity with Retrieval-Augmented Generation (RAG), agent orchestration, prompt engineering, and tool calling
• Knowledge of AI standards like Model Context Protocol (MCP) and Agent2Agent (A2A)
• Strong grasp of ML algorithms: regression, classification, clustering, deep learning
• Awareness of AI ethics and regulations (eg, NIST AI RMF, EU AI Act)
• Skilled in using AI tools like GitHub Copilot and prompt engineering for development tasks
• Experience with orchestration tools such as AI Foundry or Semantic Kernel
• Exposure to automated testing and evaluation of AI outputs
• Proficiency in Python, PyTorch, and TensorFlow

• Proven experience in software engineering, ideally in platform or cloud-native service development
• Strong background in Microsoft Azure and PaaS services (eg, Azure Functions, AKS, API Management)
• Expertise in RESTful API design, versioning, and life cycle management
• Deep understanding of API security, authentication/authorization, and data privacy
• Excellent problem-solving skills and ability to propose scalable solutions
• Agile team experience, with strong collaboration across global R&D teams
• Ability to mentor junior developers and foster a culture of innovation
• Solid experience with AI frameworks and Python development