Senior Software Engineer - MCP

Principal & Senior Software Engineers (MCP)

📍Remote | must be based in the UK or Ireland

🪪No visa sponsorship offered

We're working with a technology-led organisation building the next generation of AI-enabled platform capabilities and are looking to add both a Principal Software Engineer and a Senior Software Engineer to a brand-new team focused on Model Context Protocol (MCP) development.

This is an opportunity to work at the intersection of software engineering, AI agents, LLMs, and platform architecture. You'll help build the infrastructure that enables AI systems to securely interact with real-world products, services, and data. The team is creating a suite of MCP servers that act as trusted gateways between AI agents and core business platforms, helping shape how AI-powered applications are built and used in production environments.

What you'll be working on

• Building and scaling MCP servers that expose platform capabilities to AI agents and developer tooling.
• Designing secure APIs, authentication, authorisation, and session management.
• Working with modern AI tooling, agent frameworks, LLM integrations, and MCP SDKs.
• Developing highly reliable, observable, and secure services.
• Contributing to architecture, technical standards, and engineering best practices.
• Solving complex problems in a fast-moving, emerging area of software engineering.

We're keen to speak with engineers who have:

• Strong backend engineering experience with TypeScript/Node.js or Python.
• Experience building APIs and distributed systems.
• Knowledge of OAuth, OIDC, JWTs, authentication and security best practices.
• Experience with cloud, serverless, or edge environments.
• A genuine interest in AI, agentic systems, and LLM-powered applications.
• Hands-on experience with MCP, AI agents, tool calling, prompts, resources, or modern AI frameworks.

Why apply?

You'll be joining a business that values small, empowered teams, engineering excellence, and solving meaningful real-world problems. Engineers are trusted to make decisions, experiment with new technologies, and focus on outcomes rather than process.

Senior Software Engineer

• up to £70,000 + bonus

Suitable for engineers with around 6+ years of software engineering experience who want to deepen their expertise in AI infrastructure and platform development.

Principal Software Engineer

• Up to £90,000 + bonus

Ideal for experienced technical leaders who enjoy setting technical direction, mentoring engineers, and owning architecture end-to-end.

If you're excited by AI infrastructure, agentic systems, and helping define how modern AI applications interact with software platforms, I'd love to hear from you.

Research indicates that men will apply to a role when they only meet 50-60% of the descriptions, however, when looking at women and other minority groups, they can look for up to a 99% match in order to apply to a role. If you feel you are a fit for our role, please still apply, don’t worry if you don’t tick every single box. We’d still love to hear from you. We encourage underrepresented talent to apply to all our roles & support accessibility needs