Senior Blockchain Engineer: MoonPay in New York

WiredCurrencies; New York, Northern (NY, KY); Hybrid; USD 150,000 - 210,000; Full time

Job summary

MoonPay in New York, NY seeks a Senior Blockchain Engineer to advance transaction infrastructure for crypto, stablecoins, tokenized assets and payments. The hybrid role focuses on high-throughput, reliable systems, wallet custody interfaces, and cross-chain flows while ensuring financial correctness.

Applicants should have production experience with live blockchains, transaction lifecycles, and the ability to explain incidents end-to-end.

Qualifications

• Strong backend and platform engineering fundamentals for production systems.
• Experience with live blockchain networks and transaction lifecycles.
• Familiarity with wallet infrastructure, custody systems, and high-throughput services.

Responsibilities

• Design transaction broadcasting and lifecycle systems.
• Build state machines for partial failures and recovery.
• Improve observability, alerting, reliability and resilience.
• Develop off-chain services that interact with on-chain contracts.

Skills

Backend engineering

Live blockchain networks

Transaction lifecycles

Wallet infrastructure

Custody systems

High-throughput systems

Financial systems

Ethereum / Bitcoin / Solana wallet

Tools

Ethereum

Bitcoin

Solana

Blockchain indexing

Event ingestion

Backend smart contract interaction

Job description

# Senior Blockchain Engineer: MoonPay in New York**MoonPay**New York, NY Start Date09/09/2026$180,000.00$ Full-TimeMoonPay is hiring a Senior Blockchain Engineer for its Software Engineering team in New York. The hybrid role develops transaction infrastructure for crypto, stablecoins, tokenized assets, and payments. The position pays $150,000 to $210,000, while the employment type, benefits, and application deadline are Not provided by the employer.MoonPay operates across products that fund, tokenize, trade, and spend digital assets. The work covers cryptocurrency infrastructure and backend services that interact with live blockchain networks. The role requires production experience with transaction lifecycles, wallet or custody systems, and high-throughput or financial systems. The position is part of the wider blockchain systems and financial technology employment landscape.* **Role:** Senior Blockchain Engineer* **Employer:** MoonPay* **Location:** New York, New York* **Work mode:** Hybrid* **Employment type:** Not provided by the employer* **Salary:** $150,000 to $210,000* **Benefits:** Not provided by the employer* **Application deadline:** Not provided by the employerApply For This RoleDiscover moreEconomicscurrencyFinTechCandidates applying for the Senior Blockchain Engineer role have the job title, New York location, hybrid work mode, and compensation range available before submission. The employer's application page contains the role-specific responsibilities and qualifications.## Transaction Broadcasting And RecoveryThe Senior Blockchain Engineer designs and improves high-volume transaction broadcasting pipelines. The work follows transactions from creation through confirmation, including detection of stuck transactions, retries, rebroadcasts, and recovery from failed steps. Wallet infrastructure and automation systems form part of the engineering scope.Financial correctness shapes the implementation. Systems need reconciliation, auditability, monitoring, alerting, and operational guardrails. The role also covers cross-chain and multi-step journeys, including flows that move between fiat and on-chain systems.* Design transaction broadcasting and lifecycle systems.* Build state machines for partial failures and recovery.* Improve observability, alerting, reliability, and resilience.* Develop off-chain services that interact with on-chain contracts.* Support routing and swap execution with attention to liquidity changes, price impact, and MEV.* Participate in incident response and post-mortems.## Backend And Blockchain Engineering QualificationsDiscover moreBrokerages & Day TradingFintechMerchant Services & Payment SystemsThe role requires strong backend and platform engineering fundamentals, along with experience operating production systems that have real uptime requirements. Hands-on experience with live blockchain networks and a clear understanding of transaction lifecycles on at least one blockchain are required.MoonPay also expects failure-mode-oriented thinking and the ability to explain a production incident from beginning to end. Experience with Ethereum, Bitcoin, or Solana wallet infrastructure, custody systems, high-throughput services, or financial systems supports the work. The listing names UTXO chains, ERC-20 and SPL tokens, blockchain indexing, event ingestion, cross-chain orchestration, and backend smart contract interaction as bonus areas.## MoonPay Product And Engineering ContextMoonPay develops infrastructure for movement of value across crypto, stablecoins, tokenized assets, and payments. Its product areas include funding, tokenization, trading, and spending. The company reports more than 30 million customers and more than 500 ecosystem partners.The engineering work connects product behavior to network-level settlement and recovery. A transaction may cross chains, depend on changing liquidity, or require several non-atomic steps. Engineers therefore work with product managers on implementation plans while maintaining tested, performant, and maintainable services.## Pay And Working ArrangementThe published salary range is $150,000 to $210,000. The posting identifies New York as the location and hybrid work as the work mode.The employer does not provide an employment type, benefits package, application deadline, or application contact in the verified job information. The official application page is the available application method.## Questions About The Senior Blockchain Engineer Role### What experience does the role require?The role requires production systems experience, live blockchain experience, transaction lifecycle knowledge, and experience with wallet infrastructure, custody, high-throughput systems, or financial systems.### Which blockchain topics appear in the qualifications?The qualifications mention Ethereum, Bitcoin, Solana, UTXO-based chains, ERC-20 and SPL token standards, blockchain indexing, event ingestion, and backend interaction with smart contracts.### Does the job include incident response?Incident response and post-mortems are listed responsibilities, alongside monitoring, alerting, recovery design, and resilience work.### What benefits are available?Benefits are Not provided by the employer in the verified job information.Discover moreFinancefinancefinancialThe listing also includes project estimation, planning, and execution alongside feature and integration work. Those activities connect the role's platform responsibilities to product delivery without removing the operational focus on transaction reliability.MoonPay identifies AI as its default operating mode and expects daily use. The role's published guidance states that candidates do not need experience in every listed area and that applicants with approximately 75 percent of the requested background are encouraged to apply.