Senior Backend Engineer
- Role
- Backend
- Experience
- Senior
- Employment
- Full-time
- Company size
- Startup
Open to CA only. Set where you work from to check your eligibility.
No BS summary
Senior Backend Engineer with 5-12+ years of experience in high-scale, high-availability systems, preferably in fintech or crypto. Must have deep expertise in identity/access/security, financial systems/ledgering/payments, or blockchain infrastructure. NYC preferred, but remote within US/Canada is possible.
Core skills
Required skills
Optional skills
Moonshot is the “Robinhood for DeFi”—an iOS and Android app that lets anyone trade cryptocurrencies on-chain through a user-friendly interface.
Since our launch in July 2024, we’ve attracted 2M+ users.
Our mission: Make moonshots possible for everyone.
Our vision: Make a world where life-changing financial outcomes are within everyone's reach.
Everyone on our team is both a decision-maker and an implementer—united by a sense of urgency and driven by the conviction that our work can transform global finance. If you thrive on curiosity, welcome tough challenges, and aspire to leave a meaningful mark on the world, Moonshot is the place for you. You’ll run toward the hardest problems alongside high-caliber teammates who consistently push each other to excel and who share your dedication to shaping the future of decentralized finance.
This role is full-time, preferably located in NYC. Open to remote for the right candidate.
THE OPPORTUNITY
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, 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.
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 they require
- 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.
Benefits
- 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.
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