AI Software Engineer

numi; London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A tech-driven financial solutions provider in London is seeking a Software Engineer (AI Engineering) to design and implement cutting-edge AI systems. You will contribute to building services that support AI agent interaction and implement modern development tools. Enjoy a culture of trust, creativity, and genuine growth opportunities within a hybrid working environment. Competitive salary and generous benefits included.

Benefits

Private healthcare

Electric car scheme

Paid development and wellbeing days

Qualifications

• Strong backend development experience required.
• Familiarity with Model Context Protocol is a plus.
• Eagerness to learn LLM integration patterns encouraged.

Responsibilities

• Build and maintain services supporting AI agent interaction.
• Implement APIs aligned with the Model Context Protocol.
• Participate in design reviews and incident response.

Skills

Strong backend development experience

Familiarity with Model Context Protocol

Eagerness to learn LLM integration patterns

Experience with Retrieval-Augmented Generation (RAG)

Knowledge of GenAI-enhanced development tools

Job description

Software Engineer (AI Engineering)

Ready to design and implement cutting-edge AI systems that drive real impact?

numi are proud to have partnered with a company on a mission to make great financial decision-making a breeze for everyone, and that purpose drives them every single day. They’re creating an automated quoting engine with the simplest of experiences, wrapped in a brand everyone loves!

numi's partner is a future-focused, customer-obsessed company where tech isn't just an add-on — it's at the heart of everything they do. They believe brave ideas and brilliant people can achieve incredible things, and they're passionate about empowering their employees and their consumers. They champion a culture of innovation, challenge, and creativity, celebrating their wins at every turn.

As a Software Engineer (AI Engineering), you'll be part of a pioneering team responsible for designing and implementing agent-ready systems and developer tools. You'll write production-grade software that enables safe, scalable, and AI-augmented engineering, helping to shape the future of their technology.

• Build and maintain services that support AI agent interaction.
• Apply GenAI to modernise, refactor, and accelerate legacy systems.
• Implement APIs, contracts, and metadata aligned with the Model Context Protocol.
• Contribute to internal tooling that supports AI-native SDLC workflows.
• Participate in design reviews, code reviews, and incident response.

You’re an innovative Software Engineer eager to dive into the world of AI engineering. numi's partner is excited to hear from people with a range of skills, experiences, and ideas. You don’t need to tick all the boxes, but they’d love to hear what makes you great for this role!

• Strong backend development experience.
• Familiarity with or eagerness to learn:
• Model Context Protocol for managing context and tool interfaces for agents.
• LLM integration patterns including prompt orchestration and tool calling.
• Retrieval-Augmented Generation (RAG) for dynamic context injection.
• GenAI-enhanced development tools and frameworks such as Cursor, Unblocked.

What Success Will Look Like

• Delivers high-quality, maintainable code that meets spec.
• Owns problems end-to-end from design through deployment.
• Quickly learns and applies emerging AI-native engineering patterns.
• Raises the bar for system simplicity, clarity, and agent-readiness.

Why You’ll Love Working with the team:

A culture built on trust, creativity, and inclusion.

Real flexibility – hybrid working that actually works.

A say in the products you build and the tools you use.

A genuine chance to grow your skills, your career, and your impact.

Generous benefits including a competitive salary, private healthcare, electric car scheme, and paid development, wellbeing, and CSR days.