Staff Software Engineer, Crypto

What We're Looking For

We are seeking a highly experienced Staff Software Engineer to join our team and help lead the design, development, and scaling of our cryptocurrency and blockchain-focused platforms. As a Staff Engineer, you will serve as a technical leader, driving architecture decisions, mentoring engineers, and delivering robust, secure, and high-performance solutions in the crypto space. The ideal candidate brings expertise in designing and implementing enterprise-grade software solutions, with a strong foundation in distributed systems, SOLID principles and modern software design patterns.

Responsibilities

• Provide technical leadership: define and drive the technical vision and architecture for crypto-related products, services, and infrastructure
• Design, develop, and deliver scalable, secure and performant software components
• Provide technical mentorship and guidance to senior and mid-level engineers; conduct code reviews and promote engineering best practices
• Stay at the forefront of blockchain protocols, DeFi, tokenization standards, and crypto industry trends; evaluate and recommend emerging technologies
• Drive system reliability, incident response, and operational excellence across crypto platform services

Qualifications

• 5+ years of experience with blockchain technologies, cryptocurrency protocols, or digital asset platforms
• 10+ years of experience developing enterprise systems in C#
• 10+ years of experience with SQL, preferably PostgreSQL or SQL Server
• Deep understanding of blockchain fundamentals — consensus mechanisms, smart contracts, wallet management, key custody, transaction signing, and on-chain/off-chain data flows
• Experience integrating with major blockchain networks (e.g., Bitcoin, Ethereum, Solana, or similar)
• Solid grasp of cryptographic principles — hashing, encryption, digital signatures, HSMs, and key management
• Strong communication skills
• Cloud Architecture - preferably AWS
• Docker / Containers
• Experience designing and developing distributed systems and event driven architecture is a plus. Ideally with understanding or exposure to:
  • MassTransit or NServiceBus
  • RabbitMQ
  • Idempotency

#LI-JJ1 #LI-Hybrid

Salary Range: $190,000.00 - $220,000.00

Cross River is an Equal Opportunity Employer. Cross River does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis covered by appropriate law. All employment is decided on the basis of qualifications, merit, and business need.

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