Backend/Data Engineer

Company: Mentor Talent Acquisition
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Job Description:

Location: London (Farringdon)

We’re hiring for a fast-growing, profitable AI startup building LLM-powered tools for private market investors. With a lean team split across London and NYC, the company has already achieved 10x revenue growth and works with some of the world’s leading investment and consulting firms.

This is a unique opportunity to join as the first engineer dedicated to internal go-to-market and operations systems – owning the tools, data infrastructure, and automations that help commercial teams move faster and smarter.

What you’ll do

  • Build and own internal tools used by Sales, Customer Success, Finance, and Ops
  • Design and maintain the company’s data warehouse and internal data architecture
  • Connect product, CRM, billing, and finance data into clear, reliable reporting
  • Automate workflows using LLMs, agents, and AI-driven systems
  • Improve billing, invoicing, reconciliation, and customer health reporting
  • Help shape engineering decisions, priorities, and culture in a fast-moving startup

Example projects

  • Build customer health dashboards and alerts using product + CRM data
  • Create feedback pipelines that turn customer conversations into structured product insights
  • Implement complex B2B billing / invoicing logic (usage-based, seat-based, platform fees)
  • Build reporting systems across product, commercial, and finance teams

What we’re looking for

  • Experience as a Backend Engineer, Data Engineer, or hybrid internal systems engineer
  • Strong experience with PostgreSQL and at least one data platform such as Snowflake, BigQuery, Databricks, or similar
  • Experience building internal tools, automations, or business systems
  • Comfortable working across Sales, Finance, Ops, and Customer Success
  • Strong project ownership and ability to work directly with senior stakeholders
  • Startup mindset: fast-moving, pragmatic, and comfortable with ambiguity
  • Bonus: experience with Node.js / TypeScript, Stripe, Retool, Amplitude, or AI-powered products

Why join

  • First dedicated hire in this area with high ownership and visibility
  • Opportunity to build an AI-first internal systems stack from scratch
  • Profitable, high-growth business with strong momentum
  • Private health insurance
  • Third Space gym membership
  • Frequent company offsites

Posted: April 5th, 2026