Software Engineer, Platform

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About this role

Software Engineer, Platform Remote (US), United States About OpenRouter OpenRouter is the leading AI routing and infrastructure layer that enterprises use to access, manage, and optimize the best large language models across providers-without lock-in, capacity constraints, or unnecessary cost. We power the most advanced AI teams in the world by giving them the flexibility to move fast, scale confidently, and stay future-proof as models evolve. As enterprise adoption of AI accelerates, OpenRouter sits at the center of how organizations operationalize LLMs across research, product, and production workloads. About the Role We're hiring a Software Engineer on our Platform team to own and scale the systems that route and serve millions of LLM requests every day. The business is growing at an unbelievable pace and we need help to ensure our platform can keep up. You'll work alongside a small team of engineers on owning our infrastructure, datastores, CI/CD pipeline and everything else at OpenRouter is built on. This is a hands-on IC role with broad surface area and little process between you and shipping. What You'll Do - Own and evolve our edge and cloud infrastructure across Cloudflare, Google Cloud, and Vercel. - Scale and operate our data layer including Spanner, ClickHouse, and Postgres. - Ensure we are optimizing for performance when serving LLM inference as traffic rapidly grows. - Partner with engineering leadership on capacity, reliability, and cost across the routing layer, with ownership of the systems carrying production traffic. - Set the bar and playbook for how we

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