Sr. Software Engineer, Mobile App

We are Subway Headquarters! A dedicated team of professionals supporting thousands of franchisees around the globe.

Sr. Software Engineer - Mobile App Shelton, CT

Ready to build what’s next with one of the world’s most iconic brands?

At Subway, we are not standing still. We are building.

This is a business focused on what matters most: growing franchisee profitability, strengthening our brand and creating long-term value. The people who thrive here are the ones who want to make a real impact.

You will not just do the work. You will shape it.

We move fast. We think like owners. We make decisions that matter. We hold ourselves to a high standard because what we do directly impacts thousands of franchisees around the world.

If you bring energy, accountability and a bias for action, you will fit right in. We take the work seriously, but we also know the best results come from teams that support each other, celebrate wins and show up ready to build something better every day. This is your chance to be part of what’s next.

We’re looking for an experienced mobile engineer to help build and improve the Subway app on iOS and Android — the app millions of guests use to order food, manage their loyalty rewards, find nearby restaurants, and check out with their preferred payment method.

You’ll work in a collaborative product team alongside designers, product managers, and other engineers, shipping features that are fast, reliable, and polished. App performance is a core priority: every change is expected to maintain or improve speed metrics we track rigorously.

• Framework:
  React Native (cross‑platform iOS & Android) + Expo
• Language:
  Type Script (strict mode) — strongly typed throughout
• State Management:
  Redux Toolkit for app‑wide state; MMKV for fast local storage
• Navigation:
  React Navigation
• Payments:
  Adyen, Apple Pay, Google Pay
• Auth: AWS Cognito (token‑based login/session management)
• Testing:
  Jest, React Native Testing Library, Maestro (end‑to‑end)
• CI/CD:
  Git Hub Actions, Expo Application Services (EAS), Fastlane
• Error Tracking:
  Sentry
• Feature Flags:
  Launch Darkly (controls which features are live for which users)
• Analytics:
  Adobe Experience Platform, Quantum Metric

• Build and maintain app features across the full stack of the mobile experience — ordering, menu, cart, checkout, payments, loyalty, and store locator.
• Write clean, well‑tested Type Script following our established coding standards, with automated checks (linting, formatting, architectural boundary rules) running on every commit.
• Connect the app to backend services and third‑party tools: our ordering API, authentication, payment processors, fraud detection, feature flags, and analytics.
• Work with product managers, designers, and backend engineers to turn requirements into working software — joining sprint planning and reviews, implementing against Figma designs, aligning on API contracts.
• Review code from teammates and incorporate review feedback on your own pull requests; all PRs go through CI checks and peer review before merging (no direct pushes to main).
• Debug and fix issues on both iOS and Android using crash reporting tools, native logs, and device/simulator builds.
• Write and maintain tests — unit, component, performance (we track render and time‑to‑interactive budgets), and end‑to‑end flows tested on real devices via Browser Stack.
• Help keep our build and release pipelines healthy: automated builds, beta testing distributions, and production releases to the App Store and Google Play.
• Document your work — code comments, architecture decision records, and notes in our project management system.
• Participate in Agile ceremonies: standups, sprint planning, refinement, and retrospectives.
• Stay current with the React Native ecosystem and contribute to team‑wide improvements, including our ongoing migration to the React Native New Architecture (better performance and native integration).

Required:

• 6–9 years of professional software engineering experience.
• Strong commercial experience building cross‑platform mobile apps with React Native and Type Script.
• Solid understanding of React Native…