Senior Backend Engineer: Scalable Blockchain & DeFi Infra

Inflection Managing Partner, Inc.; Arlington, Northern (VA, KY); Hybrid; USD 170,000 - 210,000; Full time

Benefits offered by this job

Competitive salary package

Equity package: ownership for MoonPay

Performance equity bonus

Moonshot award: equity grants

Pension: employer contributions

Employee referral program

Flexible Time Off

Birthday leave

Enhanced parental leave

Hybrid/Remote working schedule

Commuter benefits

Private healthcare benefits

Wellhub wellness membership

AI tools access

Lunch credit

Home office setup allowance

Remote working allowance

Training budget

Job summary

You will work across wallet infrastructure, failure modes, and observability, collaborating with product managers to deliver reliable, auditable finance-grade software. The role offers remote work options and a culture of high accountability and impact.

Qualifications

• 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.

Responsibilities

• Design and improve high-volume transaction broadcasting pipelines.
• Manage transaction lifecycle end-to-end.
• Detect, retry, rebroadcast, and safely recover stuck transactions.
• Contribute to wallet infrastructure and automation systems.
• Implement safe parallel transaction handling and improve monitoring.

Skills

Backend engineering

Production systems

Live blockchain networks

Transaction lifecycle

Failure modes

Wallet infrastructure

Job description

You will work across wallet infrastructure, failure modes, and observability, collaborating with product managers to deliver reliable, auditable finance-grade software. The role offers remote work options and a culture of high accountability and impact.