Senior Backend Engineer (Web3)

Location: 100% remote; must reside in the United States. The role cannot be performed in California or Colorado. Reports to the headquarters in New York, NY.

Salary: $193,461–$291,000 per year.

Company

hirify.global develops the Arbitrum stack and infrastructure for Ethereum scalability, security, and decentralized applications.

What you will do

• Build and maintain core infrastructure powering Arbitrum and its distributed systems.
• Optimize performance, scalability, reliability, and security across blockchain-based backend systems.
• Maintain and enhance Nitro Testnode, a development tool for running local Arbitrum nodes.
• Design high-performance compiler pipelines and extensible SDK frameworks.
• Establish backend architecture standards, technology choices, and engineering best practices.
• Collaborate with research, product, blockchain engineering, and security teams while providing technical guidance and resolving platform issues.

Requirements

• Bachelor’s degree or U.S. equivalent in Computer Science, Cybersecurity, Computer Engineering, or a related field, plus 5 years of relevant professional experience; alternatively, a master’s degree plus 3 years of experience.
• At least 3 years of experience developing backend systems with languages including Go or Rust.
• At least 3 years of experience with L1–L2 protocols, blockchain protocols, distributed systems, and security-focused engineering.
• Experience with reliable broadcast protocols, distributed data structures, high-performance database storage engines, and blockchain research.
• At least 1 year of production experience with WebAssembly and 1 year with cloud infrastructure and containerization, including AWS, Docker, and Kubernetes.
• Must reside in the United States; California and Colorado are excluded.

Culture & Benefits

• Remote-first global workforce with a New York office.
• Medical, dental, and vision coverage available in the U.S. and some other countries.
• 401(k) retirement plan with company match for U.S. employees.
• Professional reimbursement for conferences, certifications, and related development.
• Wellness stipend and home-office setup or ergonomic equipment program.