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Principal Full Stack Engineer – Web & Mobile

Titan· Engineering
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New York$150k - $275k + equityFull-timePosted 8mo ago

About the role

Titan is seeking a Principal Full Stack Engineer to ship end-to-end features across web (React) and mobile (React Native) surfaces, collaborating with Product, Design, and Backend teams to deliver seamless user experiences.

Responsibilities

  • Build and maintain customer-facing products using React (web) and React Native (mobile).
  • Implement features end-to-end: frontend UI, backend API integration, data management, and performance optimization.
  • Collaborate with product designers to create intuitive, responsive UX across multiple platforms.
  • Identify opportunities to reuse components and unify shared UI patterns and tooling.
  • Ensure stability and high performance on both web and mobile through testing, metrics, and monitoring.
  • Contribute to backend endpoints where needed to support frontend features.
  • Advocate for scalable front-end architecture and clean, maintainable code.

Qualifications

  • 6 + years of professional experience building full stack applications.
  • Expert in JavaScript / TypeScript with hands-on experience in React and React Native.
  • Familiarity with mobile-first design principles and web/mobile performance considerations.
  • Experience integrating with backend services, RESTful APIs, and real-time data updates.
  • Comfortable operating across frontend and backend boundaries to ship cohesive products.
  • Excellent communication skills and ability to partner with product and design teams.

Skills

Required:JavaScriptTypeScriptReactReact Native

Benefits

  • Exceptional health & dental coverage for you & your family, with all/majority of the premium covered!
  • 401(K) match up to 4% of your salary.
  • Flexible PTO & sick days to relax, recharge, and pursue your passions!
  • Monthly internet, health & wellness and a one time work-from-home setup stipends.
  • Fully paid parental leave for our new parents!
  • Gourmet meals delivered 3 times a week.
  • Mac / PC laptop provided for all employees.
Last updated Sep 23, 2026. Interested? Apply on the company site.
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About Titan

We manage people's wealth

We're a modern wealth manager. There are many solutions out there for how one can invest by themselves (e.g., DIY brokerages like Robinhood). But for those who want to have their money managed, they must turn to high fee, high minimum advisors (e.g., RIAs like Edward Jones). With LLMs, we can now offer personalized wealth management to many more people, more cheaply and with faster service. Our goal is to grow their wealth more than they'd do on their own.

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