Senior Backend Engineer - Onramp at Mlabs

Backend Engineer - High-Throughput FinTech/Crypto Infrastructure Location: New York City (Office)Compensation: $250K - $300KWe are a high-growth software company contributing to one of the world's largest crypto social networks, moving fast and redefining what is possible in the FinTech and crypto space. We are seeking an elite Backend Engineer to design and scale the complex systems powering seamless fiat-to-crypto flows, real-time risk decisions, and rock-solid financial records for a 24/7 system.You will own mission-critical systems and services at the core of our platform, working on high-throughput, low-latency distributed systems. This role requires deep technical expertise at the intersection of payments, compliance, risk, and on-chain infrastructure.Key Responsibilities:Payments & Orchestration: Own payment orchestration for bank rails (ACH, RTP, FedNow, SEPA) and cards (Apple Pay, Google Pay), building idempotent, fault-tolerant APIs and webhook processing.Risk Engine: Build a real-time risk engine (