Staff Backend Engineer - Digital Asset Custody Platform

SoFi; Cottonwood Heights (UT); On-site; USD 180,000 - 280,000; Full time

Job summary

SoFi is seeking a Staff Backend Engineer to help build the next generation of its digital asset custody platform. This role focuses on secure custody, blockchain transaction processing, wallet infrastructure, and institutional crypto products.

This position sits at the center of crypto infrastructure, collaborating with Security, Platform Engineering, Product, Treasury, and Operations to deliver highly available systems that protect customer assets.

Qualifications

• 7+ years of backend software engineering experience.
• Strong experience with distributed systems and cloud-native architectures.
• Experience building highly available production services.
• Strong understanding of REST APIs, asynchronous messaging, and event-driven systems.
• Experience with AWS or comparable cloud platforms.
• Experience with PostgreSQL, Redis, Kafka, or similar technologies.
• Strong understanding of CI/CD and modern software development practices.
• Excellent debugging and production incident response skills.

Responsibilities

• Design and build backend services supporting SoFi's digital asset custody platform
• Develop secure transaction orchestration services for deposits, withdrawals, transfers, staking, and treasury operations
• Build integrations with custody providers, blockchain infrastructure, and institutional settlement networks
• Design APIs supporting retail and institutional crypto products
• Develop services supporting wallet lifecycle management and blockchain interactions
• Improve platform resiliency through redundancy, disaster recovery, observability, and automated recovery mechanisms
• Optimize transaction throughput while maintaining strict security controls
• Build scalable event-driven architectures supporting blockchain state changes and transaction processing
• Partner closely with Security Engineering to implement cryptographic controls and authorization workflows
• Collaborate with Product and Infrastructure teams to deliver new digital asset capabilities

Skills

Distributed systems

REST APIs

Cloud-native architectures

Production incident response

Debugging

Security-conscious engineering

AWS

Tools

PostgreSQL

Redis

Kafka

AWS

Job description

SoFi is seeking a Staff Backend Engineer to help build the next generation of its digital asset custody platform. This role focuses on secure custody, blockchain transaction processing, wallet infrastructure, and institutional crypto products.

This position sits at the center of crypto infrastructure, collaborating with Security, Platform Engineering, Product, Treasury, and Operations to deliver highly available systems that protect customer assets.