Principal Engineer

Role Description

We’re looking for a Principal Engineer to take the reins on architecture and technical direction across our stack. This is a highly autonomous, hands-on role for someone who loves to build, shape, and scale systems from the ground up.

You’ll work closely with our Head of Engineering to design the next generation of our platform — from backend data models to deployment pipelines to mobile client integrations. You’ll have the freedom to make high-impact decisions and the responsibility to ensure we’re building a foundation that lasts.

What You’ll Do

• Own architecture end-to-end: design, evolve, and document backend systems, APIs, and infrastructure.
• Stay hands-on: write production-grade code, contribute to design reviews, and drive technical excellence.
• Set engineering standards for testing, observability, CI/CD, and deployment practices.
• Partner with product and leadership to translate complex problems into clean, scalable solutions.
• Guide technical strategy and roadmap decisions to ensure we’re building with scalability, security, and simplicity in mind.
• Collaborate cross-functionally with mobile, design, and clinical stakeholders to deliver reliable and delightful user experiences.

What We’re Looking For

• 8+ years of experience building and scaling production systems.
• Deep experience in Python (FastAPI, Flask, or similar).
• Proven expertise with AWS serverless: Lambda, DynamoDB, EventBridge, API Gateway, S3, and related services.
• Strong understanding of distributed system design, data modeling, and cloud architecture best practices.
• Familiarity with React Native / Expo or mobile API integration patterns.
• A track record of technical leadership — setting standards, improving systems, and leading initiatives.
• A clear communicator who values pragmatism, iteration, and delivering great products quickly.

Bonus Points

• Experience designing new architectures from scratch or leading major refactors.
• Background in healthcare, privacy, or regulated environments.
• Experience with TypeScript, NestJS, or Node.js for edge or integration work.

Benefits

• Competitive compensation
• Medical, dental & vision plans, with an HSA/FSA option
• 401(k) with employer match
• Paid time off
• Paid parental leave

Diana Health Culture

• Having a growth mindset and striving for continuous learning and improvement
• A positive, can do / how can I help attitude
• Empathy for our team and our clients
• Taking ownership and driving to results
• Being scrappy and resourceful