AI Agent Systems Engineer

A pre-seed, founder-led startup is seeking a Founding Engineer to build the "Agentic Financial Ops" layer for the global fintech market. While others build simple chatbots, this stealth-mode venture is embedding autonomous AI agents directly into major B2B platforms-automating invoicing, bill pay, and payroll for SMBs. This is an opportunity to join at the ground floor of a company targeting a $100B market shift.What you will build:The Engine: A white-label, API-first, multi-tenant system designed to embed cleanly and securely into partner ecosystems.The Intelligence: You aren't just calling APIs; you are treating LLMs as infrastructure. You will build agentic workflows that handle complex financial operations autonomously.The Foundation: You will replace the founder's initial "vibe-coded" prototype with a robust, production-ready architecture. You decide the stack; you set the engineeringculture.The Founders:The Commercial Engine: A domain experts and "straight talkers" (formerly, Role OverviewWe are seeking an AI Agent Data Engineer to join the Technology, Data & Innovation division,This role sits at the core of building next-generation AI processes and control agents deployed across multiple Agent Factories.You will work closely with AI..., Senior LLM, RAG & Agentic AI Consulting Engineer - Lead / Senior FDE Remote First, some trips to client offices and HQ Lead the design and delivery of complex, AI-native client engagements, spanning agentic systems, retrieval architectures and semantic layers. This is a...

VPs at a successful embedded finance scale-up). They have already secured signed contracts across the UK, US, and Europe-and early revenue-before the API is even live. They bring the pipeline, the deep market knowledge, and the capital; you bring the product.The Role:Zero to One: Take the product from MVP concept to Production.Full Ownership: Build the core platform end-to-end (Backend, APIs, Frontend).Architecture: Design for security, permissions, and scale from day one.Speed: Iterate fast with real customers. The goal is to launch the API in Q2.This is not a ticket-taking role at a stagnant SaaS. This is a Decide + Build + Own seat where you sit directly beside the founder.The ProfileMindset: Scrappy, high-growth, and product-minded. You care deeply about why a feature exists, not just how it's built.Experience: A Senior Engineer (Backend-leaning or Full-stack) who has shipped early-stage products into production.Tech: Hands-on experience with LLMs & agentic workflows. You are pragmatic about tech choices that optimize for speed and correctness.The Offer Salary £95k-£120k + Significant Founding Equity. Similar jobs

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