Senior Full-Stack Engineer (TypeScript & LLM Integration) - £110K, Remote UK

JR United Kingdom; Leicester; Remote; GBP 45,000 - 70,000; Full time

Job summary

A groundbreaking AI start-up in Leicester seeks experienced Full-Stack Engineers to join their innovative product team. This exciting role entails building cutting-edge software powered by AI, where the successful candidate will work on both B2B platforms and custom AI solutions. Join a dynamic environment focused on integrating advanced technologies and enhancing user experiences through Large Language Model capabilities. Ideal for passionate developers looking to make a significant impact in an ambitious and rapidly evolving field.

Qualifications

• Experience with unified codebases and AI/LLM components.
• Strong proficiency in modern web applications and AI integration.
• Adaptability and rapid feature delivery in fast-paced settings.

Responsibilities

• Develop and maintain web application features using advanced technologies.
• Integrate AI models and optimize workflows for performance.
• Design and enhance database architectures to support applications.

Skills

TypeScript

React

Node

Next.js

MySQL

AI integration

tRPC

Prisma

LangChain

Prompt engineering

Job description

Client:

Oliver Bernard

Location:

Job Category:

Other

Virtual job fairs

-

EU work permit required:

Yes

Job Views:

10

Posted:

06.06.2025

Expiry Date:

21.07.2025

Job Description:

A hugely exciting AI start-up is seeking several experienced Full-Stack Engineers to join a dynamic product team, focused on building innovative software powered by cutting-edge AI technologies.

Virtual job fairs

This is a unique opportunity for a passionate developer to contribute to an ambitious product and work at the forefront of AI integration.

About the Role

The successful candidate will work within a unified codebase that powers both the B2B software platform and its custom AI capabilities. Responsibilities will span the full feature lifecycle, from design (including data structures) to AI integration, enhancing user experiences through advanced Large Language Models.

Key Responsibilities

• Build and maintain web application features using TypeScript, React, Node + Next.js
• Contribute to and maintain a monorepo that includes both the B2B SaaS platform and AI/LLM modules
• Integrate and optimize commercially available LLMs (e.g., OpenAI, Gemini) via prompt engineering and inference pipeline management
• Implement multi-step LLM workflows using orchestration frameworks such as LangChain.
• Design and optimize the MySQL database
• Develop and maintain type-safe RPC endpoints using tRPC and TypeScript to ensure smooth frontend-backend communication
• Rapidly onboard to a modern TypeScript stack to support high-velocity feature development

Required Qualifications

• Proven experience working in a unified codebase combining application logic and AI/LLM components
• Strong proficiency in building modern web applications with Next.js, tRPC, TypeScript, and Prisma
• Practical experience integrating with AI models such as ChatGPT or Gemini, including prompt engineering and API management
• Familiarity with tools like LangChain (or similar) to implement multi-step AI workflows
• A demonstrated ability to learn quickly and deliver functional features in a fast-paced environment

Preferred Qualifications

• Experience deploying and fine-tuning custom AI models
• Prior experience developing B2B software platforms with multi-user functionality

Please note that if you are NOT a passport holder of the country for the vacancy you might need a work permit. Check our Blog for more information.

Bank or payment details should not be provided when applying for a job. Eurojobs.com is not responsible for any external website content. All applications should be made via the 'Apply now' button.

Created on 06/06/2025 by JR United Kingdom