Senior Full Stack Engineer - TypeScript, LLMs

JR United Kingdom; Doncaster; Remote; GBP 50,000 - 75,000; Full time

Job summary

A growing AI start-up in the UK is seeking a Senior Full Stack Engineer to shape their B2B platforms and AI integrations. This fully remote role offers the chance to work with cutting-edge technologies, from developing applications with TypeScript to optimising AI-driven user experiences. Candidates ideally should have experience deploying AI models and strong skills in database management.

Qualifications

• Experience with Next.js, TypeScript, and AI models integration required.
• Strong database skills ideally with MySQL.
• Familiarity with LangChain or similar tools.

Responsibilities

• Develop web applications using TypeScript, React, Node, and Next.js.
• Integrate LLMs like OpenAI and Gemini through prompt engineering.
• Optimise MySQL databases for performance and scalability.

Skills

TypeScript

React

Node.js

Next.js

MySQL

AI integration

tRPC

Prisma

LangChain

Job description

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Senior Full Stack Engineer - TypeScript, LLMs, doncaster

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Client:

Oliver Bernard

Location:

doncaster, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

8

Posted:

06.06.2025

Expiry Date:

21.07.2025

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Job Description:

Senior Full Stack Engineer - TypeScript, LLMs

Fully Remote - UK based

Oliver Bernard have partnered with a growing AI start-up who have recently secured another round of funding, and are now looking for talented Senior Full Stack Engineers to shape the product and company from the ground up.

We are looking for a Mid Level Engineer to join our client's dynamic product team. This is an incredible opportunity to work with cutting-edge AI technologies and drive innovation in B2B software solutions.

Role Overview:

As a Senior Full-Stack Engineer, you will contribute to a unified codebase powering both B2B platforms and custom AI integrations. You'll be involved in the full feature lifecycle, from design and development to optimising AI-driven user experiences.

Key Responsibilities:

• Develop and maintain web applications using TypeScript, React, Node and Next.js.
• Contribute to a monorepo encompassing B2B SaaS and AI modules.
• Integrate Large Language Models (LLMs) like OpenAI and Gemini through prompt engineering.
• Optimise MySQL databases for performance and scalability.
• Build type-safe RPC endpoints with tRPC and TypeScript.

Requirements:

• Experience with Next.js, tRPC, TypeScript, Prisma.
• Strong database skills ideally with MySQL.
• Hands-on experience integrating AI models (e.g., ChatGPT, Gemini).
• Familiarity with LangChain or similar orchestration tools.
• Fast learner, adaptable in high-paced environments.

Preferred Skills:

• Experience deploying and fine-tuning custom AI models.
• Background in B2B software platforms with multi-user environments.