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 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 systems
Improve API performance and reliability for high-throughput services
Optimize query performance against databases like ClickHouse, Postgres, and RocksDB
Collaborate with senior & staff engineers on caching, scaling, and distributed data patterns
Debug, profile, and maintain production systems for performance
Engage in system design, technical discussions, and long-term planning
3+ years of strong backend engineering experience
Experience with Rust (strongly preferred), C++, or an equivalent language
Professional experience with distributed systems, data pipelines, and performance-focused engineering
Familiar with database schema design and optimization patterns for large datasets
Ability to break down complex problems into simple solutions
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
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
Top Skills
Helius Toronto, Ontario, CAN Office
Toronto, Ontario, Canada
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