MoonPay

Senior Blockchain Platform Engineer

MoonPay
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24 days ago

Base Salary

$190k - $255k/yr

Responsibilities

  • Design and improve high-volume transaction broadcasting pipelines.
  • Manage transaction lifecycles, including detection, retrying, rebroadcasting, and safe recovery of stuck transactions.
  • Contribute to wallet infrastructure, automation, monitoring, observability, and operational guardrails.
  • Design systems with financial correctness, reconciliation, and auditability in mind.
  • Build cross-chain and multi-step transaction flows across fiat and on-chain systems.
  • Design state machines and recovery strategies for partial failures across non-atomic workflows.
  • Support routing and swap execution, including price impact, liquidity changes, and MEV awareness.
  • Build reliable off-chain services that interact with on-chain contracts.
  • Plan and execute projects, features, and integrations in collaboration with Product Managers.
  • Develop and maintain tested, high-quality, performant, reliable, and maintainable code.
  • Participate in incident response and post-mortems while improving reliability, alerting, and resilience.

Requirements

  • Strong backend and platform engineering fundamentals.
  • Experience operating production systems with real uptime requirements.
  • Hands-on experience interacting with live blockchain networks in production.
  • Clear understanding of the transaction lifecycle and failure recovery in at least one blockchain.
  • Ability to reason about failure modes rather than only happy paths.
  • Ability to explain a real production incident end-to-end.
  • Experience with at least one wallet infrastructure, such as Ethereum, Bitcoin, or Solana, or with custody systems.
  • Awareness of MEV, slippage, pricing impact, and swap execution risks.
  • Experience with high-throughput or financial systems.
  • Experience with exchanges, custody providers, wallet infrastructure teams, or high-volume DeFi platforms is a bonus.
  • Familiarity with UTXO-based chains, including coin selection and fee-bumping strategies such as RBF and CPFP, is a bonus.
  • Experience designing cross-chain or multi-step transaction orchestration systems is a bonus.
  • Familiarity with blockchain indexing or event-ingestion pipelines is a bonus.
  • Understanding of common token standards such as ERC-20 and SPL, and interaction with smart contracts from backend services, is a bonus.

Benefits

  • $190,000-$255,000 salary band.
  • Equity package and performance-based equity bonus.
  • Employer pension contributions from day one.
  • Flexible time off, birthday leave, and enhanced parental leave.
  • Fully remote work or a hybrid schedule from a nearby Moonbase.
  • Commuter benefits, private healthcare, wellness membership, and lunch credit on office days.
  • Unlimited enterprise access to Claude, ChatGPT, Gemini, and other AI tools.
  • Home office setup allowance and remote working allowance.
  • Monthly product budget and zero-fee crypto transactions.
  • $1,000 annual training budget, structured development, mentorship, and stretch opportunities.
  • Regular remote company offsites and hackathons.
  • Ireland Cycle to Work scheme and UK EV salary-sacrifice option where applicable.

Categories

MoonPay

About MoonPay

201-500 employees
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