Senior Software Engineer

What You Will Do
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