Senior Software Engineer - Full Stack/ AI Driven Tools

ZipRecruiter; London; Hybrid; GBP 110,000; Full time

Job summary

A leading health tech company is seeking a software engineer to develop AI-powered web applications and backend services. This role involves working with cross-functional teams to create solutions that improve care delivery, utilizing modern tech stacks like Ruby on Rails and AWS. Candidates should bring over 5 years of software engineering experience, ideally in full stack development, with a focus on AI/ML interests.

Qualifications

• 5+ years in software engineering, ideally across full stack environments.
• Experience with complex systems at scale.
• Interest in AI/ML is essential.

Responsibilities

• Write clean, well-tested code across the stack.
• Own feature development end to end.
• Drive architectural improvements and evaluate new tools.

Skills

Software Engineering

AI/ML

Full Stack Development

Collaboration

Tools

Ruby on Rails

PostgreSQL

AWS

Docker

Job description

Job Description

Join a fast-growing health tech company using AI to solve high-impact, real-world problems. Building tools that help frontline professionals reduce admin and focus on delivering care, my client are looking for engineers who want their code to make a measurable difference.

What You’ll Be Building

• AI-powered web applications (think speech-to-text, smart summarisation, and automation of manual workflows)
• Scalable backend services and internal APIs to support data-heavy processes
• Realtime interfaces using modern frontend frameworks (HTMX/Turbo/Alpine or similar)
• Integrations with LLMs (e.g., OpenAI, Claude) to optimise and automate user workflows
• Developer tooling and infrastructure to support continuous deployment and high availability

Tech Stack Overview (this isn’t a list of all the things you need, just giving you a good overview of what is on offer)

• Backend: Ruby on Rails, PostgreSQL, Sidekiq, Redis, AWS
• Frontend: Turbo/Hotwire, Phlex, AlpineJS, TailwindCSS
• AI/LLM: OpenAI, Claude, LangChain (or equivalents)
• Infra: Docker, Terraform, GitHub Actions, CloudWatch

What You’ll Do

• Write clean, well-tested code across the stack with a product-focused mindset
• Own feature development end to end — from design discussions to deployment
• Work with cross-functional teams to translate user pain points into elegant solutions
• Optimise application performance and system scalability as usage grows
• Drive architectural improvements and evaluate new tools/libraries
• Help productionise AI features (prompt tuning, prompt chaining, LLM orchestration, etc.)

What We Look For

• 5+ years in software engineering, ideally across full stack environments
• Experience working on complex systems with meaningful scale
• A bias toward action and pragmatism: you ship working software quickly
• Strong product intuition and comfort collaborating beyond just engineering
• Interest in AI/ML — no PhD required, but hands-on curiosity essential
• Based in (or regularly able to visit) London for in-person collaboration

Location: London, Hybrid

Salary: £110,000 + benefits

Contract: Full-time, Permanent