Full Stack Developer (React Native + Rails)

Strong base salary + performance bonus
4 Openings
Software Development
About Us

At HabitNu, we’re building tools to help people live longer, healthier lives. Backed by the U.S. Centers for Disease Control (CDC), we’re active in all 50 U.S. states and expanding rapidly in India.

Our platform combines mobile-first design, AI-driven behavior models, real-time tracking, and personalized nudges to drive meaningful behavior change and better health outcomes. This is hands-on, mission-driven health tech, with impact you’ll see in real lives.

Join a global team developing solutions for diabetes, weight loss, and metabolic health. What you create here gets used daily, by people who are counting on it.

Job Overview

We're looking for React Native full-stack developers with an understanding of Ruby On Rails and experience assembling and deploying applications to the cloud. You will focus on our frontend mobile app and administration consoles but will also work on the existing backend (including predictive analytics).

What You’ll Do
  • Write clean, high-performance React Native code for iOS/Android.
  • Build scalable Rails APIs integrated with MongoDB.
  • Connect front-end elements with backend logic and 3rd-party services.
  • Assemble, test, and deploy features to AWS.
  • Debug issues, reduce bottlenecks, and optimize across the stack.
  • Maintain code quality through reviews, tests, and automation.
  • Ensure security and compliance with SOC2, HITRUST, and internal InfoSec policies.
  • Monitor performance and address bugs or vulnerabilities proactively.
What You Bring
  • 2-6 years or 5- 10 years of full-stack development experience (Designation will be provided as per experience range)
  • Deep experience with React Native, ReactJS, and modern JavaScript
  • Solid backend chops with Ruby on Rails, MongoDB, MVC, and REST APIs
  • Familiar with CI/CD pipelines, Git, templating engines (ERB/HAML), and automated testing
  • Comfortable deploying to cloud platforms (AWS, GCP, or Azure)
  • Experience with Google Play and App Store submissions.
  • Bonus: background in secure or regulated environments.
  • Strong communicator, fluent in English, and comfortable in remote teams.
What You Get
  • Strong compensation: Solid base salary plus performance bonuses.
  • Work-life balance: Flexible schedule that respects your time
  • High-growth culture: Build, learn, and grow, every day
  • Full health coverage: Insurance for you and your dependents, with no salary deductions
  • Learning support: Access to our in-house LMS to keep your skills sharp
  • Mission with meaning: Redefine how we manage prediabetes, diabetes, and metabolichealth, with empathy, science, and bold innovation
Ready to Apply?

We’re growing fast and making a real difference. Think you’re a fit?

Looking for a different role? Check out all our open positions.