Full Stack AI Engineer at Fast-growing AI startup

Jack & Jill/External ATS; Remote; GBP 70,000 - 90,000; Full time

Job summary

A fast-growing AI startup is seeking a Full Stack AI Engineer to shape the technical vision of an innovative product. The role involves building scalable solutions, developing backend APIs with Python and FastAPI, and creating responsive UIs using React. The ideal candidate has over 5 years of full-stack development experience and robust skills in AI systems. This remote role offers an opportunity to impact the company's early journey significantly.

Qualifications

• 5+ years of professional experience in full-stack development.
• Hands-on experience with RAG systems and vector databases.
• Strong proficiency in Python, FastAPI, and React/Next.js.

Responsibilities

• Build reliable, secure backend APIs that power AI features.
• Design, implement, and iterate retrieval pipelines for relevance.
• Ship fast, accessible UIs that expose AI features.

Skills

Full-stack development

Python (FastAPI)

React/Next.js

RAG systems

SQL/NoSQL databases

Job description

Full Stack AI Engineer

Company Description: Fast-growing AI startup

Job Description:
Join a fast-growing AI startup as a Full Stack AI Engineer, shaping the technical vision and building scalable solutions from prototype to production. This hands‑on role demands deep technical expertise and entrepreneurial drive, offering the chance to solve real customer problems and significantly impact the product's early stages and the company's journey towards key milestones.

Location: Remote, UK

Why this role is remarkable:

• Shape the future of an innovative AI product from its early stages, directly impacting customer solutions.
• Backed by significant early‑stage funding from top‑tier VCs, ensuring strong support for growth.
• Play a pivotal role in evolving a modular, scalable platform and contributing to technical strategy.

What you will do:

• Build reliable, secure backend APIs (Python/FastAPI) that power AI features and data retrieval at scale.
• Design, implement, and iterate retrieval pipelines (RAG, vector search) for relevance and cost efficiency.
• Ship fast, accessible UIs (React/Next.js) that clearly expose AI features like search and explanations.

The ideal candidate:

• 5+ years of professional experience in full‑stack development.
• Hands‑on experience with RAG systems, vector databases (pgvector/FAISS), embeddings, and hybrid search.
• Strong proficiency in Python (FastAPI) and React/Next.js, alongside SQL/NoSQL databases.

How to Apply:

To apply for this job speak to Jack, our AI recruiter.

Step 1. Visit our website
Step 2. Click 'Speak with Jack'
Step 3. Login with your LinkedIn profile.
Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions
Step 5. If the hiring manager would like to meet you, Jack will make the introduction