Senior Full-Stack Engineer - Enterprise AI Scale (London)

Sarah Smith; Greater London; On-site; GBP 110,000 - GBP 170,000; Full time

Job summary

A leading AI startup in London is seeking a T-shaped full-stack engineer with a focus on backend engineering. You will own the back-end infrastructure and play a key role in the company's growth from $3M to $30M ARR. The ideal candidate has 6+ years of engineering experience, strong skills in NodeJS and AWS, and a proactive mindset. We offer a competitive salary (£110K – £170K) plus equity, along with flexible working arrangements and supportive team culture.

Benefits

Equity

24 days holiday + bank holidays

2 weeks work-from-anywhere

Pension plan

Top-spec equipment

Free dinner at the office

Team events and dinners

Work directly with founders

Qualifications

• 6+ years of software or product engineering experience.
• Strong experience building and scaling production systems.
• Comfort with backend engineering (NodeJS, Postgres, TypeScript).
• Ability to operate autonomously in a small, high-velocity team.
• Excellent communication and collaboration skills.

Responsibilities

• Own and scale Kernel’s back-end infrastructure.
• Design systems for processing millions of accounts and terabytes of data.
• Build reliable data pipelines and services for enterprise customers.
• Rapidly ship features to users and the internal team.
• Evaluate code, infrastructure, and processes for improvements.

Skills

AWS

NodeJS

Postgres

TypeScript

Kubernetes

CRM data models

Frontend experience

Tools

n8n

NextJS

Tailwind

Job description

A leading AI startup in London is seeking a T-shaped full-stack engineer with a focus on backend engineering. You will own the back-end infrastructure and play a key role in the company's growth from $3M to $30M ARR. The ideal candidate has 6+ years of engineering experience, strong skills in NodeJS and AWS, and a proactive mindset. We offer a competitive salary (£110K – £170K) plus equity, along with flexible working arrangements and supportive team culture.