Cypher is building the next-generation global consumer bank account, powered by stablecoins and designed for both humans and autonomous agents. Headquartered in Newark, California, Cypher is backed by leading investors including Y Combinator and Samsung Next Ventures .

We’re on a hyper-growth trajectory and looking for a Staff Backend Engineer to help us scale our platform. At Cypher, we move large volumes of money through multiple stages of our system with high reliability. We're rethinking financial infrastructure from first principles and applying AI-first approaches to every business problem.

This role is ideal for someone who thrives in fast-paced environments, has experience scaling backend systems, and enjoys building elegant solutions to complex problems.

• Architect and build scalable backend systems that power global money movement
• Design robust APIs and services that handle financial transactions securely
• Collaborate closely with product and AI teams to deliver intelligent features
• Make critical infrastructure decisions on our AWS-based stack
• Uphold a high standard of engineering excellence and mentorship
• Work with AI Agents to get things to done

• 7+ years of experience building scalable, production-grade backend systems
• Proven ability to architect systems in AWS or similar cloud infrastructure
• Experience in fast-paced startups or high-growth environments
• Comfort working autonomously and taking ownership end-to-end
• "Vibe coding"