About Helius Helius is building the core infrastructure for Solana - empowering developers to create the next generation of crypto-powered applications. Our mission is to accelerate the development of internet capital markets by making it easier, faster, and more intuitive to build on-chain. Thousands of teams - from early-stage startups to industry leaders like Coinbase, Phantom, and Jupiter - rely on Helius APIs, webhooks, and indexing tools to power their products. Backed by Haun Ventures, Founders Fund, and Foundation Capital, we’re a small, senior team obsessed with performance, simplicity, and scalability in decentralized systems. Read our Helius Manifesto to see how we work and what we value. About the Role We're looking for a Staff Performance Engineer to own the most latency-critical systems at Helius. These services are responsible for streaming Solana's state changes across our global network and providing real-time data APIs to traders, exchanges, and DeFi protocols. They handle massive throughput, and small optimizations create outsized impact. You'll lead performance strategy, drive cross-team architectural decisions, and dig into the hardest bottlenecks to make our p
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