The RoleMember of Technical Staff, Platform EngineerYou'll design, build, and own distributed systems and core platform infrastructure end-to-end across the stack - from user-facing product surfaces and real-time interactions to evaluation pipelines, model orchestration, and the systems underneath them.
What You'll Own- User-facing product surfaces and UX for Design Arena and related products-building fast, reliable, and intuitive interfaces for real-world workflows
- Distributed systems that power real-time product experiences, user interactions, and large-scale data flows behind Design Arena and similar systems
- Evaluation pipelines that turn millions of pairwise preferences into reliable model signals
- Model and agent orchestration systems that run complex, multi-step workflows across products and evaluations
- Core platform infrastructure for deploying new product categories, multi-turn interactions, and reusable internal abstractions
- Production systems that are fast, reliable, and observable under real-world load
What We're Looking For- We don't optimize for years of experience. We care about your ability to build, debug, and ship real systems - if you can prove that, we're interested.
- Strong production engineering experience (full-stack; open to backend-heavy or frontend-heavy profiles). Our stack includes, but is not limited to, Python, TypeScript, React/Next.js, Swift, Android/Kotlin, and infrastructure across major cloud providers (AWS, Google Cloud). You do not need to be an expert in all of them.
- Experience building or operating distributed systems at scale
- Comfortable owning ambiguous problems end-to-end and shipping reliably
- Experience with real-time or data-intensive systems is a plus
- Experience or strong familiarity with AI systems, agentic workflows, model development, or evaluation
We hire for strong engineering execution and mission alignment.
What to Expect- High agency and ownership from day one
- Direct work with founders on core systems and decisions
- Fast iteration cycles and real production impact
- A small, focused team working on a hard, meaningful problem
This is a high-intensity, high-impact environment. We move quickly, operate with limited structure, and expect people to take ownership and deliver.
