Senior AI Engineer

JR United Kingdom; Cardiff; Remote; GBP 100,000 - 150,000; Full time

Job summary

A dynamic seed-stage HealthTech start-up is seeking a Senior AI Engineer to design and build innovative AI systems that will directly impact healthcare outcomes. This is a unique opportunity to influence the development of advanced AI technologies in a rapidly growing company backed by tier 1 VCs.

Qualifications

• Experience with LLMs and generative AI models.
• Ability to work autonomously in building AI systems.
• Experience in scaling projects from prototype to production.

Responsibilities

• Design and build AI systems including agent-based AI and voice automation.
• Make technical decisions and work with healthcare data.
• Impact patient outcomes through technology.

Skills

AI/ML engineering experience

fine-tuning LLMs

building voice agents

strong communication

Job description

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? Senior AI Engineer | HealthTech | Remote UK/EU | £100-150k base + Equity ?

A seed-stage HealthTech start-up with backing from notable tier 1 VCs is seeking to recruit its first AI engineer. This company already has a seven-figure ARR and is close to announcing a large Series A.

About the Role:

You'll design and build a range of AI systems and technologies, including agent-based AI systems, voice automation, recommendation engines, and intelligent healthcare workflows. You will have the autonomy to make technical decisions, work hands-on with real-world healthcare data, and directly impact patient outcomes.

If you love taking ideas from prototype to production, have experience with LLMs, agentic frameworks, and possibly voice tech, and want to help scale something from zero to one, this role is for you.

• Strong product-focused AI/ML engineering experience
• Experience fine-tuning LLMs and generative AI models
• Ideally, experience building voice agents (TTS, STT)
• Entrepreneurial, independent, and ready to build
• Strong communicator, stakeholder-friendly
• Based in the UK or Europe with the ability to travel to the US infrequently