Senior Full Stack Engineer – AI Platform £90k - £120k + Equity
React and Node on AWS
Fully Remote
We’re hiring on behalf of a well-funded AI-first startup building the next generation of LLM-powered agents that are transforming enterprise customer experience. They are pioneering empathetic, agentic workflows across chat, voice, and messaging channels.
They’re now looking for a Senior Full Stack Engineer to join their small, high-calibre team. If you’re excited by AI-powered products, high ownership, and working on meaningful real-world problems.
Key Responsibilities
&##129521; Full-Stack Product Engineering
Design, build, and maintain scalable features across the frontend, backend, and infrastructure
Contribute to an AI-first platform integrating large language models (LLMs) into enterprise workflows
Develop and optimise performant, well-tested microservices using Node.js, TypeScript, and PostgreSQL
Build intuitive UIs in React, collaborating closely with Design and Product
&##128640; Platform, Scale & Infrastructure
Optimise APIs and system architecture for speed, security, and scale
Take a DevOps-first approach to AWS (Fargate, Lambda, EC2, SQS, etc.)
Contribute to continuous delivery with GitHub Actions and modern CI/CD practices
Improve developer tooling and observability across the stack
&##129309; Team & Culture
Collaborate closely with other engineers, product managers, and leadership
Participate in shaping the product roadmap and engineering direction
Share knowledge, mentor others, and help foster a fast, pragmatic, and open team environment
About You
~7+ years of experience in software engineering, ideally across both frontend and backend (30/70 or 70/30 is fine &##128512;)
~ Strong in Node.js, TypeScript, Express, and React
~ Experience with AWS cloud infrastructure and PostgreSQL/Redis
~ Product mindset, you think in terms of outcomes, not just features
~ Comfortable in fast-paced, early-stage startup environments
~ Experience in building microservices and distributed systems
~ Strong communicator with a collaborative, solution-focused approach
Bonus Experience
Exposure to LLM APIs, AI tooling, or NLP-powered applications
Knowledge of Next.js or modern frontend architecture
Infrastructure-as-Code (CDK, Terraform, etc.)
Experience in customer support tech or event-driven systems
Python scripting or backend services alongside JS stack
What’s on Offer
&##128184; Compensation & Perks
Salary: £85k–£120k DOE
Equity or stock grants
Learning and AI tooling budgets (Perplexity Pro, ChatGPT Pro, Claude Pro)
&##127793; Culture & Flexibility
Fully remote
Flexible time off
Async-friendly, autonomous environment
Small, senior team where your voice counts
Build something meaningful from the ground up
No coding interview or take-home, paid work trial after 2 interviews with engineering leaders at times that work for you &##128077;
If you want to write code that solves an interesting problem at scale at a company, all in on AI first, I would love to speak to you.