Technical Lead

TomNext; England; On-site; GBP 70,000 - 90,000; Full time

Job summary

A progressive financial technology startup in the UK seeks a Technical Lead to drive the development of AI-powered investment tools. You will be responsible for system architecture, integrating diverse data sources, and leading a talented engineering team. The ideal candidate has over 5 years of software engineering experience and strong leadership skills. Join us to shape the future of investment through innovative technology in a high-impact, fast-paced environment.

Benefits

Mentorship from experienced CTO

High-impact leadership role

Innovative work environment

Qualifications

• 5+ years of professional software engineering experience, with at least 2 in a technical or team lead role.
• Proven experience leading end-to-end architecture and deploying microservice-based SaaS platforms.
• Deep expertise in C# / .NET Core and ASP.NET Core Web API development.

Responsibilities

• Design and optimize AI tools for investment analysis.
• Integrate data sources to enrich AI investment platform.
• Contribute to the operational AI stack including data pipelines.

Skills

5+ years of professional software engineering experience

Excellent communication and leadership skills

Expertise in C# / .NET Core

Working knowledge of Python for AI workflows

Experience with AI / LLM frameworks

Understanding of SQL (PostgreSQL)

Experience with event-driven systems

Tools

C#

.NET Core

ASP.NET Core Web API

SQL

PostgreSQL

MongoDB

Job description

In Short

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?

About TomNext

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.

Who are we looking for

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.

What you’ll do

• Design, prototype and optimize agentic AI tools that power TomNext’s investment analysis and automation.
• Integrate and structure diverse data sources to enrich TomNext’s AI‑driven investment intelligence platform.
• Contribute to the operational AI stack, including data pipelines, model evaluation and deployment.
• Build and refine production‑grade AI solutions using LLM APIs, RAG, MCP and Knowledge Graph technologies.
• Collaborate closely with the CTO, data engineers and product team to translate complex investment workflows into intuitive, intelligent systems.
• Research and experiment with emerging architectures, fine‑tuning methods, and multimodal models to keep TomNext at the frontier of applied AI.

Must haves

• 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).

Nice to haves

• 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.

Why join us

• 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.