Job Title: Sr. Backend Engineer, Historical APIs

Company Name: Helius

Job Details: RemoteFull,Time

Job Url: https://hiring.cafe/viewjob/j6r3rjwm6liwmdla

Job Description: Posted 4mo agoSr. Backend Engineer, Historical APIs@ HeliusView All JobsUnited StatesRemoteFull TimeResponsibilities:Ingest data, Index data, Optimize queriesRequirements Summary:3+ years backend engineering; experience with Rust (preferred), C++, or equivalent; distributed systems and data pipelines; performance-focused engineering; large datasets.Technical Tools Mentioned:Rust, C++, PostgreSQL, ClickHouse, RocksDB
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 Sr. Backend Engineer who wants to work on serious infrastructure. This isn’t a narrow feature role. You’ll own meaningful pieces of the stack, learn from senior engineers, and ship production code that gets used immediately. Expect high ownership, fast feedback loops, and real impact.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 DoBuild ingestion, indexing, and retrieval features across our archival systemsImprove API performance and reliability for high-throughput servicesOptimize query performance against databases like ClickHouse, Postgres, and RocksDBCollaborate with senior & staff engineers on caching, scaling, and distributed data patternsDebug, profile, and maintain production systems for performanceEngage in system design, technical discussions, and long-term planningWhat You'll Bring3+ years of strong backend engineering experienceExperience with Rust (strongly preferred), C++, or an equivalent languageProfessional experience with distributed systems, data pipelines, and performance-focused engineeringFamiliar with database schema design and optimization patterns for large datasetsAbility to break down complex problems into simple solutionsRelentless curiosity and a drive to dive deep into performance optimizationsDesire for a fast-moving, high-ownership environmentNice to HaveExposure to Solana, blockchain, or web3 infrastructureExperience with Postgres, ClickHouse, and/or RocksDBWhy 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