Staff Fullstack Engineer, App Team

About the role:

Key responsibilities:

• Cross-Stack Engineering: Work across the entire stack, including a React Native app (iOS, Android, web) and Node.js/TypeScript and Go backend services.
• System Design: Build foundational systems and make critical technical design decisions that accelerate overall development speed; Own large, ambiguous problems from conception to completion.
• Setting the Standard: Establish the bar for excellence in system architecture, code reviews, and shipping velocity.
• Team Multiplier: Raise the technical standard for the entire team and mentor others on how to gain maximum leverage from modern engineering tooling.
• Team Mentorship: Mentor a small squad (2–4 engineers), setting technical direction and upholding a high bar for code quality through mentorship and rigorous code reviews.
• High-Fidelity Feature Delivery: Deliver major features to users that actively define the future direction of the product.
• Ecosystem Contribution: Actively contribute to the open-source AT Protocol and Bluesky ecosystem.

You are a good fit if you have the following:

• Engineering Leadership: 10+ years of experience (5+ in management) building consumer-scale products and integrating AI coding tools to act as a force multiplier for the team; People who work with you get better. Your reviews, your designs, and your instincts raise the level of whole teams
• Full-Stack React Expertise: Deeply experienced in TypeScript, React, and React Native (iOS/Android/Web), with a focus on motion-rich, high-polish interfaces.
• Technical Decisions: You've made major technical decisions that mattered, and you've lived long enough with the consequences to know which ones were right
• Agentic AI: You already use agentic coding tools every day, and you have specific, opinionated views about where they create leverage and where they break down
• Technical Ownership: Proven ability to own complex areas end-to-end—from scoping and sequencing to delivering in fast-paced, autonomous environments.
• Product Intuition: A UI/UX-focused engineer who understands social app mechanics and sweats the details of the user experience.

• Startup or social media product experience
• Been a founder or part of an early team
• Worked with distributed or federated systems, real-time feeds, or content delivery at scale
• Familiarity with the AT Protocol, or a real itch to work on open protocols and open source
• Production Go, and experience with SQL or NoSQL databases (PostgreSQL, Scylla/Cassandra)