Senior React Native Engineer

Company Overview

Unicity is dedicated to developing innovative, science-based products and programs that promote metabolic health and improve the quality of life for people everywhere. For over 30 years, Unicity has been dedicated to developing high-quality products that contain the vital nutrients your body needs. With the proper process, cutting-edge technology, and a mission to Make Life Better, Unicity is paving the way for a better tomorrow.

Unicity was founded with a bold mission to make healthy living a reality in an on-the-go world. Unicity’s business model is person to person sales which has given a personal touch to our sales and growth. Unicity currently has offices in Utah, Nevada, Wyoming, plus many more globally! This job will be located in Provo, UT.

The Role

We’re looking for a Senior React Native Engineer to drive our mobile development efforts. You’ll be responsible for building scalable, high-performance applications while working closely with product, design, and backend. If you have experience with Node & NestJS on the backend, that’s a big plus!

What You’ll Do

• Own and develop new features for our React Native app, ensuring a smooth and delightful user experience.

• Optimize performance and scalability to support a growing user base.

• Work closely with designers and product managers to turn ideas into reality.

• Maintain high engineering standards, including writing clean, maintainable code and automated tests.

• Collaborate with the backend team (NestJS) to integrate APIs and improve overall system efficiency.

• Participate in code reviews, architectural discussions, and mentoring junior developers.

• Help shape our mobile tech strategy as we scale.

What We’re Looking For

• 4 years of experience with React Native and deep knowledge of the mobile development lifecycle.

• Strong proficiency in TypeScript and modern JavaScript (ES6 ).

• Experience working with React Navigation, Redux, and Expo.

• Familiarity with native modules (Swift/Kotlin) and bridging when necessary.

• Comfortable working with REST APIs.

• Knowledge of mobile performance optimizations and debugging tools.

• Bonus: Experience with NestJS, PostgreSQL, AWS, or Firebase.

• Startup mindset: you thrive in a fast-paced environment, love shipping quickly, and take ownership of your work.

Why Join Us?

• Fast-moving, high-impact work—your code will be in users' hands quickly.

• Ownership & growth—we believe in empowering our engineers to solve real problems.

• Competitive salary—we reward great work.

If you’re excited about building at speed and solving challenging mobile problems, we’d love to hear from you!