Senior Mobile Cross Platform Engineer

United States Digital Space LLC; New York (NY); On-site; USD 164,000 - 227,000; Full time

Benefits offered by this job

Health benefits

Wellness stipend

Parental leave

Commuter benefits

Generous vacation

Job summary

United States Digital Space LLC is seeking an experienced mobile platform engineer to shape the future of our React Native app. You will build infrastructure and tooling to accelerate development for hundreds of engineers and support AI‑driven features, delivering a best‑in‑class experience for millions of users.

The role offers a base salary from $164,000 to $227,000, plus bonus, equity, and benefits. Expect to collaborate across teams, mentor engineers, and drive robust mobile release

Qualifications

• 5+ years of cross‑platform mobile development, ideally with React Native.
• Proven ability to collaborate with product and engineering teams.
• Strong fluency in TypeScript and familiarity with React/React Native.
• Experience with iOS and Android build, configuration, and distribution systems.
• Shipped apps used by millions of users.

Responsibilities

• Build and maintain internal frameworks, developer tooling, and infrastructure.
• Collaborate with product and engineering teams to improve app quality, performance, and observability.
• Identify bottlenecks and deploy operational efficiencies to automate mobile CI/CD and release orchestration.
• Design and improve tooling to reduce friction in the developer loop and maximize engineering velocity.
• Mentor engineers and raise the bar on technical standards, code quality, and delivery practices.
• Partner with QA to lead the company’s mobile release process across iOS and Android.
• Build and scale AI‑enabling app development infrastructure to support increased product velocity.

Skills

React Native

TypeScript

Mobile development

Collaboration

Performance profiling

Tools

Bitrise

CircleCI

GitHub Actions

Bugsnag

Datadog

Sentry

Hex

GraphQL

Job description

About the Role

As a mobile platform engineer, you'll help shape the future of the company's React Native app, building the infrastructure and tooling that make development faster, safer, and more scalable for hundreds of engineers working alongside AI.

You’ll thrive in this role if you enjoy building for developers, solving complex technical problems, and multiplying your impact on others while delivering a best‑of‑class experience for our 10M+ monthly active members.

The base salary offered for this role and level of experience will begin at $164,000.00 and up to $227,000.00. Full‑time employees are also eligible for a bonus, competitive equity package, and benefits. The actual base salary offered may be higher, depending on your location, skills, qualifications, and experience.

In this role, you can expect to

• Build and maintain internal frameworks, developer tooling, and infrastructure.

• Collaborate with product and engineering teams to improve app quality, performance, and observability.

• Identify bottlenecks and deploy operational efficiencies to automate mobile CI/CD and release orchestration, reducing manual effort and increasing reliability.

• Design and improve tooling to reduce friction in the developer loop and maximize engineering velocity.

• Mentor engineers and raise the bar on technical standards, code quality, and delivery practices through design reviews, guidance, and example.

• Partner with QA to lead the company’s mobile release process across iOS and Android.

• Build and scale AI‑enabling app development infrastructure to support increased product velocity.

To thrive in this role, you have

• 5+ years of experience in cross‑platform, mobile development, ideally with React Native.

• A collaborative mindset, excellent communication skills, and a drive to document and share what you build.

• Strong fluency in TypeScript and familiarity with React, React Native.

• Experience with iOS and Android build, configuration, and distribution systems.

• Shipped apps that are used by millions of users.

• A track record of profiling and improving app performance.

• Familiarity with observability and analytics tools like Bugsnag, Datadog, Sentry, or Hex.

• Deep understanding of server‑client architecture, leveraging GraphQL and performance profiling (e.g., memory pressure, screen latency, optimizing time to interactive, preloading).

• Experience with mobile build infrastructure platforms such as Bitrise, CircleCI, or GitHub Actions.

Nice‑to‑have

• Experience with feature flag systems, runtime controls, or OTA delivery frameworks (e.g., Expo Updates, CodePush).

• Experience building the infrastructure that supports AI‑native mobile development.

• Familiarity with state management tools like Redux, React Context, AsyncStorage, or MMKV.

• Scaled mobile quality practices and testing frameworks.

#LI-Onsite #LI-AA1

A little about us

At the company, we believe that everyone can achieve financial progress. We created the company—a financial technology company, not a bank*—on the premise that core banking services should be helpful, easy, and free. Through our user‑friendly tools and intuitive platforms, we empower our members to take control of their finances and work towards their goals. Whether it’s starting a savings account, purchasing a first car or home, launching a business, or pursuing higher education, we’re proud to have helped millions unlock their financial potential.

We’re a team of problem solvers, dreamers, and builders with one shared obsession: our members. From day one, Chimers have worked tirelessly to out‑hustle and out‑execute competitors to bring our mission to life. Their grit and determination inspire us to work harder every day to deliver the very best experience possible. We each bring an owner's mindset to our work, refusing to be outdone and holding ourselves accountable to meet and exceed the highest bars for our teams, our company, and our members.

We believe in being bold, dreaming big, and taking risks, while also working together, embracing our diverse perspectives, and giving each other honest feedback. Our culture remains deeply entrepreneurial, encouraging every Chimer to see themselves as stewards of our mission to help everyday Americans unlock their financial progress.

We know that to achieve our mission, we must earn and keep people's trust—so we hold ourselves to the highest standards of integrity in everything we do. These aren’t just words on a wall—our values are embedded in every aspect of our business, serving as a north star that guides us as we work to help millions achieve their financial potential.

Because if we don’t—who will?

*the company is a financial technology company, not a bank. Banking services provided by The Bancorp Bank, N.A. or Stride Bank, N.A., Members FDIC.

What we offer for our full‑time, regular employees

• Our in‑office work policy is designed to keep you connected - with four days a week in the office and Fridays from home for those near one of our offices, plus team and company‑wide events depending on location. Whether you’re coming in regularly or are part of our fully remote program, you’ll stay engaged with your work and teammates.

• Benefits that support your work and life, including backup child, elder, and pet care and subsidized commuter benefits for eligible employees.

• Comprehensive health, financial, and wellbeing benefits designed to support you at every stage of life.

• Generous vacation policy and company‑wide paid days off

• 1% of your time off to support local community organizations of your choice

• Annual wellness stipend to use towards eligible wellness related expenses

• Up to 22 weeks of paid parental leave for birthing parents and 12 weeks of paid parental leave for non‑birthing parents

• Access to family planning reimbursement

• A challenging and fulfilling opportunity to join one of the most experienced teams in FinT