Artificial Intelligence jobs in United Kingdom

We’re building an intelligent AI platform that will redefine how investors access, analyse, execute and manage private market assets such as Private Equity, Private Credit etc.

Having secured funding from leading investors including Multi Family Office, fintech founders, blockchains, and senior figures in wealth management, we’re looking for an exceptional Technical Lead to join us in scaling a category-defining product.

Are you ready to join a fast-paced, high-trust startup at the intersection of AI and finance? Do you want to stay hands-on, build from the ground up and grow a world-class engineering team around you?

At TomNext, we’re transforming how people invest in private markets, a $22 trillion industry that has remained largely untouched by innovation. Our platform uses AI, LLMs and agentic workflows to streamline and automate the complex due diligence and investment processes, empowering investors with modern tools for a legacy industry.

We’re seeking a Technical Lead who thrives in a fast-paced, high-ownership startup environment. You’ll be coding from day one, setting the technical standard, shaping the architecture and helping build a product that’s redefining how the world invests in private markets.

If you’re someone who:

• Has an abundance of initiative and delivers without waiting for instructions
• Sees complexity as an opportunity to innovate
• Leads by doing and thrives in the weeds
• Is hungry to grow, build and lead from the front

This is your chance to help shape the foundation of a transformational company.

• Design and lead the architecture of TomNext’s AI-driven investment intelligence platform.
• Code daily, from front-end UX/UI to backend services to AI integrations and infrastructure, while raising the technical bar across the team.
• Collaborate closely with the CTO, data scientists and product leadership to deliver intelligent automation and decision-support tools.
• Build and mentor a small, elite engineering team, building a culture of excellence, curiosity and execution.
• Drive technical strategy across architecture, scalability and security while remaining hands‑on in implementation.
• Explore and integrate emerging AI frameworks and blockchain frameworks, models and tools to keep TomNext ahead of the curve.

• 5+ years of professional software engineering experience, with at least 2 years in a technical or team lead role.
• Excellent communication, ownership and leadership mindset, you execute and inspire through action.
• Proven experience to lead end-to-end architecture, system design, and deploy microservice-based SaaS platform
• Deep expertise in C# / .NET Core and ASP.NET Core Web API development.
• Working knowledge of Python for AI workflows
• Experience with AI/LLM frameworks (e.g. LangChain, Google Vertex, LiteLLM, OpenAI API).
• Implement DevOps best practices for CI/CD pipelines , monitoring, and cost-efficient scaling on GCP and Azure
• Solid understanding of SQL (PostgreSQL) and relational database design.
• Experience with event-driven systems (Pub/Sub, Kafka) and NoSQL databases (MongoDB).

• Familiarity with RAG, autonomous agents, and Model Context Protocol (MCP).
• Exposure to TDD, Agile, and DevOps environments
• Front-end experience with Angular 12+ and Angular Material.
• Hands-on experience with blockchain platforms, tokenisation frameworks or Web3 integrations.

• Shape the future of how the world invests in private markets through intelligent automation and AI.
• Be in the trenches from day one designing, building and shipping production systems while setting the technical bar for others to follow.
• Work side by side with an extremely experienced CTO and wider management team who will mentor you as you scale into a senior leader.
• Build and lead a high-performing engineering team as the company grows, your technical and cultural imprint will define how TomNext builds.
• Own real impact, your architecture, code, and leadership will directly influence product, growth, and investor success.

Join a mission-driven, high-trust startup backed by Multi Family Offices, Blockchains leading fintech founders, and senior figures in financial services, where ambition, speed and creativity are the norm.