About HeliusHelius 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 RoleWe're looking for a Staff Backend Engineer who wants to own and evolve serious infrastructure. This isn't about executing on a roadmap - you'll define technical direction, architect systems that scale to multi-petabyte datasets, and set the standard for engineering excellence across the team. You'll work autonomously on high-impact problems, mentor senior engineers, and drive architectural decisions that shape the future of our infrastructure.About the TeamThe Archival team exposes APIs for querying Solana’s multi-petabyte ledger with sub-100ms. If you love the challenge of large datasets and low-latency performance engineering, this is the right team for you. The team moves fast, owns an enormous surface area, and operates like a small group of founders sitting in the critical path of the company.What You'll DoArchitect and lead the development of ingestion, indexing, and retrieval systems across our archival infrastructureDrive technical strategy for API performance, reliability, and scalability across high-throughput servicesDesign and optimize data models and query patterns for ClickHouse, Postgres, and RocksDB at scaleLead system design discussions and make architectural decisions on caching, distributed data patterns, and performance trade-offsSet standards for operational excellence, debugging methodologies, and performance profiling across production systemsMentor senior engineers and elevate the team's technical capabilitiesPartner with leadership on long-term technical roadmap and infrastructure investmentsIdentify and drive solutions to complex, ambiguous problems that span multiple systemsWhat You'll Bring7+ years of backend engineering experience with a track record of building large-scale, high-performance systemsDeep expertise in Rust (strongly preferred), C++, or equivalent systems programming languagesProven experience designing and operating distributed systems, data pipelines, and performance-critical infrastructure at scaleExpert-level knowledge of database internals, schema design, and optimization patterns for large datasetsDemonstrated ability to architect simple, elegant solutions to complex technical problemsStrong technical leadership and mentorship skills with the ability to influence without authorityTrack record of driving technical decisions and long-term architectural visionRelentless curiosity and a drive to push the boundaries of what's possible in performance engineeringComfort with ambiguity and the ability to thrive in a fast-moving, high-ownership environmentNice to HaveExperience with Solana, blockchain, or web3 infrastructureDeep expertise with Postgres, ClickHouse, and/or RocksDB internalsPrevious experience in a Staff or Principal engineering roleOpen source contributions or technical writing that demonstrates depth of expertiseWhy Helius?High-impact work: Your code will power applications used by millions across the Solana ecosystem, including Coinbase, Jupiter, and PhantomSerious engineering: Build fast, reliable systems and user experiences across distributed infra, high-throughput backends, and modern frontend stacksOwnership & growth: Lead critical initiatives, influence architecture and product direction, and take on more responsibility as the company scalesRemote-first flexibility: Work where you’re most effective with a flexible, fully distributed teamCompetitive comp & perks: Market-leading salary, meaningful equity, generous vacation, wellness budgets, and support for learning and travelMission-driven team: Join ambitious builders who move fast, take ownership, and are shaping the future of decentralized apps