Senior Software Engineer, Backend
Helius, North America
The role
We're looking for a Senior Software Engineer to join one of our core backend teams - Data Streaming, Historical APIs, or Account Index. These are mission-critical systems that handle real-time Solana state changes, historical data at petabyte scale, and high-throughput API traffic for traders, exchanges, and developers worldwide.
You'll own meaningful parts of these systems end-to-end - not just implementing features but making architectural decisions, improving reliability, and pushing performance further. We're a small team, which means your work has outsized impact and your voice carries weight in technical decisions.