Senior Software Engineer at Thriva Limited

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Job Title: Senior Software Engineer

Company Description: Thriva Limited - Personalized health-tech platform scaling proactive at-home testing.

Job Description:
Join a small, high-impact product team leveraging cutting-edge AI to bridge the gap between lifespan and healthspan. As a Senior Engineer, you will build and evolve the backend systems powering both direct-to-consumer and B2B health platforms. You'll work across a modern Ruby on Rails and TypeScript stack to deliver clinical insights at scale.

Location: London, UK

Why this role is remarkable:

- Work at the forefront of health-tech using AWS Bedrock and Langfuse to integrate AI-driven insights into personalized patient health journeys.

- Join a collaborative, high-autonomy environment that biases toward action, utilizing modern tooling like Terraform, Kubernetes, and automated CI/CD pipelines.

- Enjoy a wellness-focused culture including a monthly £100 Thriva credit, an annual "treat yourself" budget, and a well-equipped central London office.

What you will do:

- Design and evolve scalable backend architectures using Ruby on Rails to support complex clinical data and asynchronous messaging systems.

- Collaborate cross-functionally with designers and product managers to shape product outcomes and proactively solve ambiguous technical challenges.

- Implement modular, well-tested code across the stack while exploring AI-assisted development workflows to increase team velocity and impact.

The ideal candidate:

- Possesses 5+ years of commercial software experience with deep expertise in Ruby on Rails an...