[Hiring] Senior Software Engineer @Lighten

Role Description

We're looking for a Senior/Staff Software Engineer to help us build and scale the core platform that powers our data products. You'll work across the stack — from data infrastructure and backend services in AWS to the user-facing applications our customers rely on — and you'll play a key role in how we bring agentic AI capabilities into the product.

This is a high-ownership role for someone who's comfortable moving between infrastructure, backend, and frontend work, and who wants to help shape both the technical architecture and the engineering culture of a growing team.

What You'll Do

• Design, build, and ship full stack features across our platform — from data pipelines and APIs to the frontend experiences.
• Own and evolve our AWS infrastructure: provisioning, scaling, security, cost efficiency, and reliability for systems handling healthcare data.
• Architect and implement agentic AI workflows that improve how users interact with real-world data.
• Partner closely with product, data science, and commercial teams to translate healthcare domain requirements into robust technical solutions.
• Establish and improve engineering practices — code review, testing, CI/CD, observability — as the team scales.
• Make thoughtful architectural decisions with an eye toward data privacy, PHI handling, and compliance requirements inherent to healthcare data.
• Mentor other engineers and help set technical direction as a senior technical voice on the team.

Qualifications

• A strong track record shipping production systems end-to-end.
• Deep experience in at least one of backend/systems design, infrastructure, AI, or frontend, and the ability to go across all of them:
• Backend / systems design: you design services and data models others build on, and you sweat the things that break under load, concurrency, consistency, failure modes (Python, Node.js, Go, or similar).
• Infrastructure: you design and run AWS in production, not just use it, and you own scaling, security, cost, and reliability as code (ECS/EKS, Lambda, RDS, S3, IAM, VPC).
• AI: you ship LLM and agentic systems that actually hold up, treat quality as something you measure, and make the loop smarter from real usage.
• Frontend: you own features end-to-end and build interfaces that feel effortless and stay solid on messy, real-world data (React/TypeScript or similar).
• Excellent judgment on trade-offs: you move fast without cutting the corners that matter.
• Strong communication and the ability to work with non-engineering stakeholders (commercial, clinical, product).
• A commitment to clean architecture, readable code, and thorough testing, and a multiplier mindset that lifts the team.

Benefits

• Competitive salary and employee equity options.
• 3% company-sponsored 401k contributions.
• Comprehensive medical, dental, and vision insurance for employees and their families.