Full Stack Engineer

Senior Full-Stack Engineer | Agentic Social Platform x AI

$120k to $300k base + 0.2% to 0.5% equity + benefits

San Francisco (on-site, full-time)

Build in-person with the founders, product, and research team (this is not a remote role).

The mission:

Build the first fully agentic social platform where AI does the heavy lifting: learning user preferences, finding compatible matches, and turning “we should hang out” into real-world plans. Dating is the wedge. The ambition is bigger: rewire how people meet across the entire social scene. 

This is a consumer product with real stakes and real feedback loops. You ship, people use it, and your work either moves the needle or it doesn’t. No hiding behind internal dashboards forever.

What you will do:

• Own end-to-end development of a customer-facing social networking experience
• Build internal tooling used by both humans and AI agents to operate the platform
• Ship fast in an iterative environment: prototype → test → production → scale
• Optimise applications for speed and reliability (frontend performance, backend throughput, queues, caches)
• Collaborate closely with product design, leadership, and research to turn new ideas into shipped features

What you will bring:

• 3+ years building product as a full-stack or frontend-leaning engineer who can still hold their own on backend
• Strong fundamentals in data structures and algorithms (you can reason, not just glue libraries together)
• Proficiency with TypeScript + React + Next.js (or equivalent modern web stack)
• Backend experience (TypeScript preferred; Bun or Nest.js are a plus)
• Exposure to AI/ML pipelines (no required stack, just practical familiarity)
• The ability to move fast when things are loosely defined, with competing priorities and real deadlines

Why this is worth your time:

• Massive ownership: you’re building core product, not polishing the edges
• High ceiling comp: Up to $300k base plus meaningful equity (0.2%–0.5%)
• Real traction already: viral growth in a hard consumer category, with large volumes of real-world outcomes
• Serious team density: founders with extreme conviction, engineers and researchers from top schools and labs
• Backed properly: funded by Google and top-tier VCs, so you can build ambitiously without running on fumes

The process:

Screening chat → technical stage → deeper product/architecture conversation → references → offer. Adjustments available.

Understanding Recruitment is acting as an employment agency for this vacancy.

 We welcome applicants from all backgrounds. If you need adjustments, tell us and we will make it work.