Backend Engineer, Integrations & APIs

You will own the critical layer between the core infrastructure and the outside world, including the public API, indexing, data pipelines, and everything that makes the system usable by developers and partners. You'll start by understanding the system architecture end-to-end, getting the full stack running locally, and owning the JSON-RPC spec. Within a couple months, you'll have a working RPC endpoint that can submit transactions, query status, and check balances, along with an indexer serving the block explorer and a fully instrumented transaction lifecycle. Beyond that, you'll build data pipelines, work on partner integrations, harden the API, and run load testing, bringing production-readiness experience to a completely greenfield build. You'll work directly with the protocol architect and core systems engineers, in a fast-moving, highly technical team with no layers of management.

Responsibilities

• Design and build the JSON-RPC endpoints that external tools, SDKs, and wallets use to communicate with the core network
• Own the full transaction path from client to consensus and back, including status tracking, error reporting, and timeout handling
• Build the data backend that powers the block explorer, partner integrations, and historical state queries
• Build out analytics pipelines such as BigQuery population
• Implement metrics and event logging using tools like Prometheus, Clickhouse, and Sentry
• Work across service boundaries and read code in components you don't own to understand how they behave

Requirements

• Strong systems or backend programming experience in Rust, C++ or both
• Proven track record of designing and building robust RPC/API services that handle real-world, high-scale traffic
• Deep understanding of database architecture, indexing, and query patterns
• Ownership mindset for production infrastructure, not just prototypes
• Prior experience building or operating blockchain infrastructure (nodes, RPC layers, indexers) in production is a bonus
• Experience with a testnet or mainnet launch is a bonus

Benefits

• Competitive health, dental & vision coverage with most plans covered at 100% for the employee and dependents
• Flexible time off + 15 company holidays including a company-wide holiday break
• Generous paid parental leave for all parents, plus paid pregnancy disability leave for birthing parents
• Gym reimbursement ($80 per month)
• Life & AD&D coverage (up to $50K)
• Short & long term disability
• 401K with 4% match
• Health & Dependent Care FSA Accounts
• Commuter benefits with $250/month employer contribution
• Health Savings Account (HSA) with monthly employer contribution
• Family building benefits through Kindbody
• Wellbeing benefits (One Medical, Rightway, Headspace)
• L&D budget of $1,500/year
• Daily lunch and snacks in office
• Company retreats
• Equity grants