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# Blockchain Platform Engineer

- **Company:** Moonpay USA LLC
- **Location:** New York, United States (Remote available)
- **Experience:** Expert
- **Salary:** $190,000.0 - $255,000.0
- **Contract:** Permanent contract
- **Skills:** Blockchain, Systems Integration, Data Ingestion, State Machines, Backend, Bitcoin
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/senior-blockchain-platform-engineer-moonpay-com-8988147

## About the Role

* Strong backend/platform engineering fundamentals
 * Experience operating production systems with real uptime requirements
 * Hands-on experience interacting with live blockchain networks in production
 * Clear understanding of transaction lifecycle in at least 1 Blockchain and failure recovery
 * You think in failure modes, not just happy paths

Strong Signals

 * You can explain a real production incident end-to-end
 * Experience with at least 1 wallet infrastructure (Eth, Bitcoin, Solana) or custody systems
 * Awareness of MEV, slippages, pricing impact and swap execution risks
 * Experience with high-throughput or financial systems, * Experience working at exchanges, custody providers, wallet infrastructure teams, or high-volume DeFi platforms
 * Familiarity with UTXO-based chains (e.g., Bitcoin), including coin selection and fee bumping strategies (RBF / CPFP)
 * Experience designing cross-chain or multi-step transaction orchestration systems
 * Familiarity with blockchain indexing or event ingestion pipelines
 * Understanding of common token standards (ERC-20, SPL) and interacting with smart contracts from backend services

## Description

* Design and improve high-volume transaction broadcasting pipelines
 * Manage transaction lifecycle
 * Detect, retry, rebroadcast, and safely recover stuck transactions

Wallet & Lifecycle Management

 * Contribute to wallet infrastructure and automation systems
 * Implement safe parallel transaction handling
 * Improve monitoring, observability, and operational guardrails
 * Design systems with financial correctness and reconciliation and auditability in mind, * Build infrastructure supporting cross chain and multi step flows (fiat to on-chain and vice versa)
 * Handle non-atomic multi-step journeys across chains
 * Design state machines and recovery strategies for partial failure scenarios
 * Support routing mechanics and swap execution considerations such as price impact, liquidity changes, including MEV awareness
 * Build reliable off-chain services that interact with on-chain contracts

End-to-End Engineering Ownership

 * Participate in estimation, planning, and execution of projects, features, and integrations
 * Develop and maintain thoroughly tested, high-quality, and performant code
 * Collaborate closely with Product Managers to design scalable implementation strategies
 * Contribute to reliable, maintainable systems that evolve with product needs
 * Participate in incident response and post-mortems
 * Improve reliability, alerting, and system resilience
 * Continuously evolve infrastructure to support growing volume and complexity


## Related Videos

- [Pragmatic Blockchain Design Patterns: Integrating Blockchain into Business Processes](https://www.wearedevelopers.com/videos/1579-pragmatic-blockchain-design-patterns-integrating-blockchain-into-business-processes)
- [OP_PUSH_TX and its applications in Bitcoin smart contracts](https://www.wearedevelopers.com/videos/146-op_push_tx-and-its-applications-in-bitcoin-smart-contracts)
- [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock)
- [Business sensibilities when developing for Bitcoin](https://www.wearedevelopers.com/videos/27-business-sensibilities-when-developing-for-bitcoin)
- [Solving Real-world Problems with Blockchain at Algorand - Brian Whippo](https://www.wearedevelopers.com/videos/1368-solving-real-world-problems-with-blockchain-at-algorand-brian-whippo)
- [Bitcoin SV:  The Massively Scaled Blockchain to Meet Developer Needs](https://www.wearedevelopers.com/videos/20-bitcoin-sv-the-massively-scaled-blockchain-to-meet-developer-needs)

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