Role Description As a Backend Engineer at Moonshot, you’ll own some of the most critical systems in our stack: - Identity and access - Funds movement and ledgering - Blockchain infrastructure that powers our on-chain trading This role is similar to staff engineers at leading crypto wallets and exchanges who own authentication stacks, key management, and high-scale financial backends. You’ll design, build, and operate systems that must be both highly reliable and extremely secure, enabling product teams to move quickly on a solid foundation. What You’ll Do: - Design, build, and operate Identity & Access Management services: - Authentication flows, sessions, device trust - Authorization and entitlements (roles, permissions, policies) - Security controls such as MFA and key management (working with security teams) - Own financial operations systems: - Transfers and payments orchestration - Ledgering and reconciliation flows - Limits, risk controls, and transactional correctness - Build and maintain blockchain infrastructure: - Node and RPC management - Transaction submission, monitoring, and retry logic - Indexing and streaming of on-chain data into internal services and data stores - Define and uphold reliability and observability standards: - SLOs and error budgets for core services - Dashboards, alerts, runbooks, and incident management practices - Lead large, cross-functional technical projects from design through rollout, collaborating with Product, Security, and Ops - Mentor and guide other engineers, contributing to engineering standards, design reviews, and documentation - Stay close to industry best practices in auth, key management, and secure infrastructure for crypto and trading Qualifications - 5–12+ years of backend or product or platform engineering, including experience with high-scale, high-availability systems in fintech, crypto, or similar domains - Deep expertise in at least one of: - Identity & access / security engineering - Financial systems / ledgering / payments - Blockchain infrastructure / on-chain data - Strong experience designing and operating distributed systems (datastores, queues, streaming, background workers) - Track record driving architecture decisions and seeing them through implementation and adoption - Strong operational mindset: monitoring, on-call, incident response, and postmortems - Excellent collaboration skills, especially with Product, Security, and Ops Nice to Haves - Experience with Flutter, React Native, React, Headless CRMs - Experience with Go, Rust, Solana - Experience with Google Cloud or Amazon Web Services - Experience with crypto wallets, exchanges, or onchain protocols including DeFi, L2s, ZK - Exposure to data warehousing and analytics for financial reporting - Contributions to open-source projects Location - NYC preferred (with periodic in-person sprints) - Remote-friendly within the United States and Canada; travel ~1wk/quarter Compensation & Package - Competitive salary and meaningful equity - 5% 401(k) match - Health benefits with employer-covered premiums, plus life insurance coverage - One-time office setup stipend - Flexible PTO