AI Software Engineer

Lorien; England; On-site; GBP 70,000 - 90,000; Full time

Job summary

A technology services company is seeking an experienced developer to join their high-impact team focused on automating legacy system migrations using AI tools. This role demands over 5 years of full-stack development experience and offers the chance to design intelligent agents that streamline the software development lifecycle. Candidates based in the UK are preferred, as no sponsorship is available.

Qualifications

• 5+ years of full-stack development experience required.
• Experience modernising or migrating legacy systems needed.
• Familiarity with AI developer toolchains is essential.

Responsibilities

• Design and maintain AI tools for system migrations.
• Collaborate with AI Engineers on migration workflows.
• Build utilities for parsing and transforming code.

Skills

Full-stack development experience

Legacy system migration

AI developer toolchains

Automation principles

Independent work

Tools

LangChain

Semantic Kernel

Devin

Terraform

Docker

GitHub Actions

Job description

Overview

I'm supporting a forward-thinking client who is transforming how legacy systems are modernised. You'll be joining a high-impact team led by a Director of Technology, working alongside AI Engineers, an AI Product Manager, and top-tier developers focused on automating software migrations using cutting-edge tools like LangChain, Semantic Kernel, and Devin. This is a fantastic opportunity for a developer who thrives at the intersection of software engineering and AI tooling. The mission is to automate modernisation at scale, bringing legacy systems into the future with smart engineering and AI-first thinking

The Role

This isn't a traditional development role. You won't be coding in isolation or confined to standard IDEs. Instead, you'll be helping build intelligent agents and automation tools that accelerate the migration of legacy systems to modern platforms. You'll work closely with AI Engineers and technical leadership to automate high-effort tasks across the full software development lifecycle from code understanding and transformation to testing, deployment, and documentation.

Key Responsibilities

• Design and maintain AI-powered tools to automate legacy system migrations (e.g., monoliths to microservices, .NET Framework to .NET Core).
• Collaborate with AI Engineers and the Head of Development to integrate LangChain or Semantic Kernel agents into migration workflows.
• Use platforms like Devin to orchestrate and automate repetitive development tasks.
• Build reusable utilities for parsing, transforming, and re-factoring code across frontend, backend, and database layers.
• Conduct proof-of-concepts in areas like test generation, API modernisation, schema translation, and dependency analysis.
• Continuously improve the migration methodology and tooling robustness.
• Adapt to diverse legacy stacks, including proprietary or niche technologies.

Required Skills & Experience

• 5+ years of full-stack development experience.
• Experience modernising or migrating legacy systems (e.g., WinForms, WebForms, classic ASP).
• Familiarity with AI developer toolchains (LangChain, Semantic Kernel, Devin).
• Solid understanding of automation principles and system decomposition.
• Ability to work independently across varied platforms and repositories.

Preferred Skills

• Background in the .NET ecosystem (ASP.NET Core, Entity Framework).
• Experience with cloud platforms (Azure, AWS, GCP) and DevOps tools (Terraform, Docker, GitHub Actions).
• Exposure to AI-integrated developer environments like Cursor or Devin.
• Scripting experience in Python, TypeScript, or PowerShell.

Soft Skills

• Autonomous and proactive in identifying automation opportunities.
• Strong communicator and collaborator in cross-functional teams.
• Eager to learn and experiment with evolving AI frameworks.
• Detail-oriented with a focus on maintainability and quality.

This role is for UK based candidates only with full right to work (No sponsorship available)

Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation to this vacancy.