Software Engineer - AI, Next.js - £80k

Oliver Bernard; United Kingdom; Remote; GBP 75,000 - 100,000; Full time

Job summary

A leading AI startup in the UK is seeking a talented Software Engineer specializing in AI and Next.js. You will design, build, and maintain features for impactful software solutions. Ideal candidates should have solid experience in web development, database design, and AI integrations. This fully remote position promises a dynamic environment to explore cutting-edge technologies.

Qualifications

• Proven experience working within complex, unified codebases.
• Strong understanding of database optimisation, especially MySQL.
• Familiarity with LangChain for AI workflows.

Responsibilities

• Design and maintain web application features using Next.js, TypeScript, React.
• Contribute to optimising their monorepo, including B2B SaaS and AI modules.
• Integrate commercially available LLMs through prompt engineering.

Skills

Expertise in modern web development with Next.js

Strong understanding of database design

Hands-on experience integrating AI models

Ability to quickly learn new technologies

Tools

Next.js

TypeScript

Node

MySQL

Prisma

LangChain

Job description

This range is provided by Oliver Bernard. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Oliver Bernard

Principal Consultant at Oliver Bernard | Specialist in Scaling Software Engineering Teams.

Software Engineer - AI, Next.js

Fully Remote - Remote UK

Our client is a forward-thinking AI start-up dedicated to building innovative software solutions powered by cutting-edge AI technologies. Their mission is to revolutionise the B2B software landscape by integrating advanced Large Language Models (LLMs) into seamless, user-centric experiences. They are looking for talented Software Engineers to join their dynamic team and be part of the AI-driven transformation in the tech industry.

About the Role

As a Software Engineer, you will be an integral part of their product team, working within a unified codebase that powers their B2B software and custom AI modules. Your role will encompass the entire feature lifecycle, from initial design and data structuring to advanced AI integration, ensuring robust, scalable, and high-performance solutions.

Key Responsibilities:

• Design, build, and maintain web application features using Next.js, TypeScript, React and Node
• Contribute to and optimise their monorepo, which includes both B2B SaaS platforms and AI/LLM modules.
• Integrate and fine-tune commercially available LLMs (e.g., OpenAI, Gemini) through prompt engineering and inference pipeline management.
• Implement multi-step LLM workflows using orchestration frameworks like LangChain.
• Design, optimise, and manage database architecture using MySQL.
• Develop and maintain type-safe RPC endpoints with tRPC and TypeScript for seamless front-end and back-end communication.
• Rapidly onboard to their modern TypeScript stack, ensuring high-velocity feature delivery.

Required experience:

• Proven experience working within complex, unified codebases that combine application logic with AI/LLM components.
• Expertise in modern web development with Next.js, tRPC, TypeScript, and Prisma.
• Strong understanding of database design and optimisation, particularly with MySQL.
• Hands-on experience integrating with AI models like ChatGPT or Gemini, including prompt crafting and API management.
• Familiarity with LangChain or similar orchestration tools for multi-step AI workflows.
• Ability to quickly learn new technologies and deliver production-ready features in a dynamic environment.

Preferred Qualifications:

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

If you are excited about building impactful software and diving deep into AI technologies, we want to hear from you, please apply now!

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology and Engineering

• Industries

  Software Development

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