Staff Backend Engineer - Digital Asset Custody Core

SoFi; Jacksonville (FL); On-site; USD 190,000 - 230,000; Full time

Job summary

SoFi seeks a Staff Backend Engineer to help build the next generation of its digital asset custody platform. This role designs and develops core services for secure custody, blockchain transaction processing, wallet infrastructure, and institutional crypto products.

This role sits at the center of crypto infrastructure, collaborating with Security, Platform Engineering, Product, Treasury, and Operations to deliver highly available systems protecting customer assets and solving distributed

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

Cloud-native architectures

Production services

REST APIs

AWS

PostgreSQL

Redis

Kafka

CI/CD

Debugging

Tools

AWS

PostgreSQL

Redis

Kafka

Job description

SoFi seeks a Staff Backend Engineer to help build the next generation of its digital asset custody platform. This role designs and develops core services for secure custody, blockchain transaction processing, wallet infrastructure, and institutional crypto products.

This role sits at the center of crypto infrastructure, collaborating with Security, Platform Engineering, Product, Treasury, and Operations to deliver highly available systems protecting customer assets and solving distributed