Senior Full-Stack Engineer (Next.js + NodeJS + GCP)
Who we are
Different Health is a high-performance health company for people who expect more. We bring clinical-grade health optimization into the workplace—so high performers don’t have to choose between working hard and staying healthy. We make elite diagnostics and personalized plans radically more accessible, right where people spend their time: the office.
Our platform enables companies to offer personalized health testing and insights —covering everything from nutrition to recovery and resilience—designed to optimize both well-being and performance.
We’re growing fast, with a passionate, cross-disciplinary team, and are now looking for a Senior Full-Stack Engineer to join us in building the future of proactive healthcare.
About the Role
As a Senior Full-Stack Engineer, you’ll own the end-to-end development of product features that drive real impact for our clients and their teams:
Frontend : Build responsive, accessible interfaces using Next.js, TypeScript, and SCSS .
Backend : Design and implement APIs and services using Fastify and Node.js .
Infrastructure : Deploy, monitor, and scale our platform on Google Cloud Platform (GCP) .
Databases : Model and work with non-relational databases like MongoDB or similar.
You’ll work closely with product, design, and other engineers to deliver high-quality, data-driven features that help users take control of their health.
Tech Stack
Frontend: Next.js, TypeScript, SCSS
Backend: Node.js, Fastify
Databases: MongoDB, Firestore, or similar
Cloud: Google Cloud Platform
DevOps: CI/CD pipelines, Docker, Cron jobs, Scrappers, Terraform (optional)
Tools: Bitbucket, GitHub, Linear, Slack, etc.
AI: Cursor, Claude Code, Gemini CLI, agents, etc
What You’ll Bring 3+ years of experience in web development, ideally in fast-paced SaaS or health-tech environments.
Proficiency with TypeScript, React/Next.js, Node.js, and SCSS.
Experience with Fastify or similar backend frameworks.
Solid understanding of non-relational databases .
Experience with cloud infrastructure, especially Google Cloud Platform .
Familiarity with software architecture principles (e.g., Clean Architecture, DDD).
A strong product mindset—you care about the why behind the what.
Comfortable speaking and writing in English .
Bonus Points Experience in fast-growing startups or early-stage teams.
Experience working in or with healthcare or wellness .
Passion for testing (unit/integration/e2e).
Short-Term Goals In your first few months, you'll focus on high-impact initiatives that will strengthen the foundation of our platform and accelerate delivery:
Improve the visual design and UX – Elevate the interface quality and ensure consistency across all user journeys
Implement access control and user roles – Set up granular permissions to support enterprise use cases
Strengthen security controls – Review and enhance security practices to ensure compliance and user trust
What We Offer Competitive salary (TBD by location).
100% remote work available.
Subsidized wellness perks.
The opportunity to help shape the future of preventive health.
Hiring Process We move fast and value your time. Our goal is to wrap up the process within 2 weeks.
Intro Call (30 min).
Small project (1-3 hours).
Call to discuss the reasoning behind your work (30 min)
Final interviews (60 min)