- Job type
- Full-time
- Work mode
- Hybrid
- Level
- Senior
- Department
- Engineering
- Experience
- Not listed
- Posted
- Aug 12, 2026
About the role
Transaction Infrastructure at Scale
- 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
Cross-Chain & DeFi Integrations
- 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
About You
Must-Have
- 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
Bonus points
- 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
