Sr. Mobile Engineer – Platform

About Betterment

Betterment is a leading, technology-driven financial services company that offers investing and retirement solutions for retail investors and investment advisors as well as financial wellness solutions, including a 401(k) for small and medium-sized businesses. Our team is passionate about our mission: making people’s lives better. We’re headquartered in NYC and offer hybrid NY-based positions (three days/ week in-office).

 

About the role

As a Sr Mobile Engineer on the Mobile Platform team, you will be responsible for building and maintaining the shared mobile infrastructure, frameworks, and tooling that power Betterment’s Flutter applications. You’ll play a key role in shaping the developer experience for mobile engineers across the company, ensuring that teams can deliver features quickly, safely, and sustainably.

Platform engineering at Betterment enables engineers across the organization to ship great code with confidence. Our team works closely with product engineers to deliver cross-cutting capabilities, infrastructure, and frameworks that unlock faster delivery while maintaining quality. We tackle the most interesting technical challenges of scale, architecture, and developer experience to create an app platform that delights both our customers and our engineers.

This role is based out of our NYC office. Below, we’ve reflected the base salary range we would offer for this position. Actual salaries may vary depending on factors including but not limited to location, experience, and performance. The range listed is just one component of Betterment’s total compensation package for employees.

New York City: $170,000 – $195,000

We offer a competitive equity package, health, dental and vision benefits, life and AD&D, short-term and long-term disability insurance, EAP, commuter and parking benefits, FSA/HSA, and 401(k) with employer match as well as a flexible PTO policy. This job may also be eligible for variable compensation in the form of a company incentive bonus. For jobs based out of our NYC HQ, we require in-office attendance Tuesday through Thursday, weekly.

 

A day in the life

• Build and maintain the shared Flutter frameworks, libraries, and developer tooling that mobile product teams use to deliver customer-facing features
• Partner with engineers across mobile squads to improve reliability, performance, and security of our mobile apps
• Lead medium-to-large scale platform initiatives, balancing tradeoffs to ship high-quality solutions continuously and iteratively
• Collaborate closely with Product, Design, and fellow engineers to ensure platform capabilities align with business and customer needs
• Mentor junior engineers, contribute to an environment of open communication, and foster a culture of teaching and learning
• Identify and address strategic technical challenges that have long-term impact across Betterment’s mobile engineering organization
• Contribute to an engineering culture that values clean code, rigorous testing, pragmatic programming, and continuous improvement

 

What we’re looking for

• Experience building mobile applications with, or a strong interest in quickly learning, Dart and Flutter
• Expertise with declarative UI frameworks such as Flutter, SwiftUI, Jetpack Compose, or React Native
• Proficiency with state management APIs such as Flutter/React hooks, Bloc, ChangeNotifier, etc.
• Experience designing and maintaining shared libraries, frameworks, or infrastructure for mobile applications
• Familiarity with GraphQL and mobile networking best practices
• Strong understanding of software architecture, scalability, and performance considerations in mobile apps
• Ability to lead projects, drive adoption of platform improvements, and make pragmatic tradeoffs while maintaining quality
• Collaborative mindset and excitement to partner with teammates across engineering, design, and product
• Passion for software engineering, developer experience, and creating what doesn’t yet exist
• Appreciation of agility and pragmatism in software development
• The ability to thrive in a startup-like environment, balancing autonomy with collaboration

What being at Betterment means for you

We change lives

Join a community of innovators working to transform financial outcomes for real people. Your work will make an impact, always laddering up to our mission: making people's lives better.

We set audacious goals

We set them for the company, our customers, and ourselves—and we won’t stop until we reach them. We don’t just show up; we give our