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 RoleWe're looking for a Senior Backend Engineer who wants to work on serious infrastructure. This isn't a narrow feature role - you'll own meaningful pieces of the stack, drive technical decisions, and ship production code that gets used immediately. You'll work alongside staff engineers, contribute to architectural discussions, and take end-to-end ownership of projects that directly impact our performance and scalability. 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 latency. 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 and own ingestion, indexing, and retrieval features across our archival systems
Improve API performance and reliability for high-throughput services
Optimize query performance and design schemas for databases like ClickHouse, Postgres, and RocksDB
Collaborate with staff engineers on caching strategies, scaling patterns, and distributed data architecture
Debug, profile, and maintain production systems with a focus on performance and reliability
Participate in system design discussions and contribute to technical planning
Take ownership of projects from design through deployment and monitoring
5+ years of strong backend engineering experience building scalable, high-performance systems
Proficiency in Rust (strongly preferred), C++, or an equivalent systems programming language
Professional experience with distributed systems, data pipelines, and performance-focused engineering
Solid understanding of database schema design and optimization patterns for large datasets
Proven ability to break down complex problems into simple, maintainable solutions
Strong debugging and performance profiling skills in production environments
Self-driven with the ability to own projects independently and drive them to completion
Relentless curiosity and a drive to dive deep into performance optimizations
Desire for a fast-moving, high-ownership environment
Exposure to Solana, blockchain, or web3 infrastructure
Experience with Postgres, ClickHouse, and/or RocksDB
Contributions to open source projects or technical communities
Experience mentoring other engineers
High-impact work: Your code will power applications used by millions across the Solana ecosystem, including Coinbase, Jupiter, and Phantom
Serious engineering: Build fast, reliable systems and user experiences across distributed infra, high-throughput backends, and modern frontend stacks
Ownership & growth: Lead critical initiatives, influence architecture and product direction, and take on more responsibility as the company scales
Remote-first flexibility: Work where you’re most effective with a flexible, fully distributed team
Competitive comp & perks: Market-leading salary, meaningful equity, generous vacation, wellness budgets, and support for learning and travel
Mission-driven team: Join ambitious builders who move fast, take ownership, and are shaping the future of decentralized apps
