We're looking for a Staff Backend Engineer to take ownership of one of our core systems - Gatekeeper, Data Streaming, Historical APIs, or Account Index. These are the foundational layers of Helius's infrastructure, operating at the intersection of extreme performance requirements and real-world scale. Each system sits in the critical path of the Solana ecosystem.

At this level, you're not just building - you're setting technical direction, making architectural decisions that shape the platform for years, and raising the bar for everyone around you. You'll work directly with founders and engineering leadership to define what we build and how we build it. Small team, enormous scope, and the expectation that you'll own your domain end-to-end.

Own the technical direction for a core backend system - architecture, reliability, performance, and roadmap

Design and implement solutions to the hardest problems in your domain - distributed systems, storage engines, streaming pipelines, or edge infrastructure

Drive performance engineering across your system - profiling, benchmarking, and pushing latency and throughput to the limit

Set standards for operational excellence - observability, incident response, and making systems simpler and safer to operate

Partner with founders and engineering leadership on long-term technical strategy

Mentor senior and mid-level engineers, drive technical consensus, and influence without authority

Identify and solve complex, ambiguous problems that span multiple systems

What You'll Bring

8+ years of backend engineering with a strong track record building large-scale, production-grade systems

Deep systems-level expertise - you operate comfortably at the layer where software meets hardware

Senior Software Engineer, Backend

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Helius