Senior Full-Stack Software Engineer, Community Building

About this role

The Opportunity

Acorns, the financial wellness app, is building a new Community product team from scratch. This is a small, senior group with a single mandate: Get people addicted to saving by unlocking network effects inside Acorns. This team understands how to create engagement loops, virality, and habit formation. We want people who’ve mastered those mechanics and are ready to use them for something that improves people’s lives.

As a Senior Full-Stack Engineer on this team, you’ll build the systems and features that power Acorns’ organic growth engine. Social graphs, engagement loops, referral mechanics, real-time interactions, sharing flows, the infrastructure that makes a product spread. You’ll own your features end-to-end: API design, server logic, implementation, instrumentation, and iteration. You’ll work directly with the CEO, a Senior Product Manager and a Senior Product Designer.

This is end-to-end ownership from early concept through shipped product on features where what you build will reach millions of people who are often investing for the first time.

The Impact You’ll Make

• Build the mechanics that make a product spread including referral systems, social sharing flows, engagement loops, and real-time features that drive Acorns’ organic growth
• Own features end-to-end from data model to shipped customer experience, across mobile and web, with full accountability for quality and performance in production
• Deliver features end-to-end across iOS, Android, Web, and backend services, moving fluidly between platforms depending on what each initiative requires, and leveraging AI-assisted development tools to accelerate work in less-familiar codebases
• Instrument your work properly: define the events, build the visibility, and use data to iterate fast
• Take full ownership of the technical bar and architecture, while upholding engineering standards, where your decisions have outsized impact and every voice counts
• Partner directly with t...