AI Engineer: Shape Next-Gen Developer Tools & LLMs

Company: Jack & Jill
Apply for the AI Engineer: Shape Next-Gen Developer Tools & LLMs
Location: London
Job Description:

Job Title: AI Engineer

Salary: Not Disclosed

Company Description: Innovative AI-driven developer tools startup

Job Description: As an AI Engineer in this high-impact role, you will join a lean, elite team dedicated to reinventing the software development lifecycle. You will leverage cutting-edge LLMs to automate complex engineering tasks, directly influencing how developers build, test, and deploy software. This is an opportunity to shape the future of technical automation.

Location: London, UK

Why this role is remarkable

  • Work at the forefront of the generative AI revolution, building tools that developers use every single day.
  • Join an agile, well-funded startup backed by top-tier venture capital firms in the deep-tech space.
  • Direct influence on product direction and the opportunity to solve non-trivial problems in code generation and reasoning.

What You Will Do

  • Design and implement sophisticated agentic workflows and prompt engineering strategies for software development tasks.
  • Integrate and fine-tune large language models to optimize for code quality, security, and developer productivity.
  • Collaborate with a world-class engineering team to build scalable infrastructure that supports real-time AI interactions.

The ideal candidate

  • Proven experience building and deploying production-grade AI applications or LLM-powered features.
  • Strong software engineering fundamentals with proficiency in Python and modern development frameworks.
  • A deep curiosity for the latest advancements in AI research and a passion for improving the developer experience.

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Posted: May 26th, 2026