Full Stack Software Engineer, Core Experience

Austin, TX · 2+ years experience · Full-time · Onsite · Posted Oct 15, 2026

At a glance

The Core Experience team owns the member journey in software, from the first website visit to the app that shows backup and savings in real time.
The role involves building the platform that powers expansion and the product members love.

Own the member journey end to end, from the first website visit to the moment a member checks the app during an outage
Build the discovery and checkout experience: accurate plans and pricing for every address, across products and markets
Build the activation experience: photo submission, a live status tracker and internal tools that keep members, our operators, utilities, and install crews on the same page
Turn live battery telemetry into clear in-app experiences, including real-time outage status, bills that explain themselves and battery performance
Ship across the full stack (database, API and UI) and define the metrics that tell us whether it worked
Partner with design, Growth, deployments and member support, and use support data to build self-serve into the product

2+ years of experience building production software in product or full-stack engineering roles
Strong experience designing system architecture for complex web applications
Track record of owning products or platforms from concept through launch and iteration
Strong product judgment and a track record of turning ambiguous ideas into shipped, useful products
Ability to work across the stack and collaborate closely with XFN teams
Ready to work with intensity and urgency, and to hold a high bar for your own output