The OpportunityAs a Backend Engineer at Moonshot, you'll own some of the most critical systems in our stack: identity and access, funds movement and ledgering, and the 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.
What We Look For in You- 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.
