Full Stack Engineer (VC Backed, AI Start Up, Strong ARR and Equity)

Company: Amberes Recruitment
Apply for the Full Stack Engineer (VC Backed, AI Start Up, Strong ARR and Equity)
Location: London
Job Description:

VC Backed, Proven AI Start Up, Impressive Customer Base and ARR, and Meaningful Equity

  • Location: East London (Hybrid / Flexible)
  • Visa: Sponsorship Available
  • Experience: At least 12 months of experience working for a Series Backed Start Up, or leading AI employer
  • We’re partnering with a rapidly scaling AI agent company building automation software for SMBs. The platform enables non-technical users to build and deploy AI-driven workflows that replace manual operational work with intelligent agents.
  • They are now hiring a Full Stack Engineer to join the core product team and help shape the next stage of platform evolution.
  • You will work directly with the founding team and early engineers to build and scale an AI-native SaaS platform used by thousands of B2B and B2C Customers globally.
  • This is a high-velocity engineering environment where shipping speed, iteration, and product intuition matter as much as technical depth.
  • You’ll own features end-to-end across the stack and directly influence product direction.

Since launch, the company has:

  • Scaled from 0 to 3,000+ B2B and B2C customers in under 2 years
  • Grown from 0 to c. $4m ARR in the same period
  • Built a highly product-led, self-serve SMB motion
  • Raised from top-tier Silicon Valley investors
  • Founded by repeat founders with prior successful exits / scale-ups

The product is a brilliant blend of:

  • AI agents
  • Workflow automation
  • LLM-powered task execution
  • No-code / low-code user experiences for B2B and B2C Customers

Key Responsibilities:

  • Build full-stack features across modern frontend + backend systems (TypeScript-heavy)
  • Design and implement AI agent workflows and automation logic
  • Integrate LLM APIs into production-grade user workflows
  • Build scalable backend services and APIs supporting rapid user growth
  • Work closely with founders, product, and design to ship fast and iterate
  • Make architectural decisions as the platform scales from thousands → tens of thousands of users
  • Optimise performance, reliability, and cost efficiency of AI-heavy systems
  • Help shape engineering culture in a very early-stage but fast-scaling team

What They’re Looking For:

  • Strong full stack engineering experience (modern JS/TS stack preferred)
  • Comfort working in early-stage, high-ambiguity, high-velocity environments
  • Strong interest in AI agents, LLMs, or automation tooling
  • Ability to ship quickly with minimal process or hand-holding
  • High ownership mindset, you run problems, not tickets
  • Strong product intuition (understanding why something is being built, not just how)

Why This Role:

  • Join a breakout AI-native SaaS company at a pivotal scaling point
  • Product already proven with thousands of B2B and B2C Customers
  • Strong ARR trajectory already established (multi-million, fast-growing)
  • Direct access to founders and product decision-making
  • Work on real-world AI agent systems being used in production daily
  • Massive upside in both impact and career trajectory in a category-defining space

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Posted: May 15th, 2026