Senior Backend & Platform Engineer – FinOps, IAM & Blockchain

As a Senior Backend & Platform 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.

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).

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.

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.

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.