Staff Backend Engineer - Digital Asset Custody Core

SoFi; Helena (MT); On-site; USD 140,000 - 210,000; Full time

Job summary

SoFi is seeking a Staff Backend Engineer to help build the next generation of our digital asset custody platform. This role focuses on designing and developing core services powering secure custody, blockchain processing, wallet infrastructure, and institutional digital asset products.

You will partner with Security, Platform Engineering, Product, Treasury, and Operations to deliver highly available systems that protect customer assets, emphasizing distributed systems, resilient APIs, and robust

Qualifications

• 7+ years backend engineering experience.
• 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.

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

Cloud-native architectures

Backend software engineering

REST APIs

Asynchronous messaging

Event-driven systems

Security and reliability

Tools

AWS

PostgreSQL

Redis

Kafka

CI/CD

Job description

SoFi is seeking a Staff Backend Engineer to help build the next generation of our digital asset custody platform. This role focuses on designing and developing core services powering secure custody, blockchain processing, wallet infrastructure, and institutional digital asset products.

You will partner with Security, Platform Engineering, Product, Treasury, and Operations to deliver highly available systems that protect customer assets, emphasizing distributed systems, resilient APIs, and robust