Staff Backend Engineer, Data Streaming at Helius Labs

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 Engineer, Data Streaming who knows how these systems work under the hood - not just how to tune them, but how to build them from scratch. You'll own the technical direction for Helius' streaming infrastructure, which delivers real-time Solana state changes to thousands of developers and institutions worldwide. This is a role for someone who has operated in low-latency, high-uptime environments where reliability is the product - trading systems, financial infrastructure, or similar - and who brings that same obsession to customer-facing systems at scale. You'll work closely with engineers and founders to define what we build and how we build it. About the Team The Data Streaming team builds and operates products like Laserstream that deliver real-time Solana state changes to thousands of developers and institutions around the world. Latency, reliability, and throughput aren't just engineering concerns here — they're the product. The team moves fast, owns a large surface area, and sits in the critical path of the company's growth. What You'll Do Architect and build high-throughput, low-latency streaming systems from the ground up — not just optimize what exists Drive the technical roadmap for streaming, including filtered streams, next-generation webhooks, and new capabilities that expand what developers can build on Solana Lead system design discussions and make architectural decisions across the full stack: software, hardware, and networking Set standards for operational excellence — reliability, incident response, and system observability — with a bar calibrated to financial-grade uptime Mentor and elevate engineers on the team, and drive technical consensus across engineering, product, and leadership Partner cross-functionally with Sales, Support, and adjacent infrastructure teams to ensure streaming products meet the needs of customers at scale Identify and solve complex, ambiguous problems that span multiple systems What We're Looking For 8+ years of backend engineering with a strong track record building large-scale, production systems — including greenfield work, not just incremental optimization Deep proficiency in Rust or an equivalent systems programming language Experience in low-latency, high-uptime