Full Stack Engineer

Zealous Agency; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

Zealous Agency is seeking a Full Stack Engineer to join their AI startup team in Greater London. The role focuses on building core components of their innovative product while working directly on AI engineering and data pipelines. You'll have the opportunity to develop LLM applications and collaborate closely with the founding team.

The ideal candidate will possess a solid background in TypeScript, Node.js, and React, along with experience in AI and data analytics. If you're excited about solving complex problems in a dynamic, startup atmosphere, we want to hear from you.

Qualifications

• Commercial experience with AI Agents and data engineering.
• Ability to solve complex problems in a fast-paced environment.
• Experience with modern web technologies and tools.

Responsibilities

• Build core components of the AI product from concept to adoption.
• Work on cutting-edge AI engineering and data pipelines.
• Develop production-grade LLM applications and next-gen data tools.

Skills

TypeScript

Node.js

React

AI Agents

Data Engineering

Analytics Pipelines

Python

Job description

After securing a major pre‑seed round, this AI startup team is looking for another Full Stack Engineer to join, building core components of their product, and helping to keep them at the top of their fiercely competitive space.

The emphasis of this role is blending full‑stack capabilities with the chance to work directly on cutting‑edge AI engineering and data pipelines. You’ll own features from concept to customer adoption, getting your ideas implemented on a product gaining massive enterprise traction.

If you are an AI focused full‑stack engineer looking to transition deeper into AI, this role offers the perfect platform to build production‑grade LLM applications, work with AI agents, and develop next‑gen data tools alongside the founding team.

What you’ll bring to the team:

• Core Stack: TypeScript, Node.js, and React.
• AI & Data: Commercial experience with AI Agents, data engineering, and analytics pipelines. (Python exposure)
• Mindset: You love solving genuinely hard problems, and you thrive in a fast‑paced, high‑autonomy startup environment.

If you think you have what it takes to join this team, apply with a copy of your CV or get in touch with Ben Greensmith.