Senior Software Engineer (West Coast USA)

The role

You will design and develop scalable backend services in AWS and build event-driven systems using Node.js. You will work on the instant quoting platform, managing costing, pricing, lead time, and design for manufacturability.

What you will do

• Design and develop highly available, scalable backend services in AWS
• Build and maintain event-driven, asynchronous systems using Node.js
• Create robust APIs (REST / GraphQL) powering customer-facing and internal tools
• Use AI coding agents to take features from design through implementation and testing
• Write specs, tests, and repo context for agent-driven development
• Partner with product, frontend, and infrastructure teams to ship features
• Contribute to technical design discussions and drive best practices
• Help shape how the team works with AI
• Debug production issues and improve system reliability
• Improve code quality through testing, observability, and documentation

Required qualifications

• 5 + years of backend engineering experience
• Strong skills in Node.js, JavaScript/TypeScript
• Experience building systems on AWS (SQS, Lambda, EC2, RDS, etc.)
• Solid understanding of distributed systems and event-driven architectures
• Experience designing and maintaining REST or GraphQL APIs
• Familiarity with SQL and NoSQL databases
• A commitment to writing unit and integration tests
• Knowledge of system design, caching, and security best practices (OWASP Top 10)
• Hands-on experience shipping production code with AI coding agents
• Strong code review skills
• Must be a U.S. citizen or lawful permanent resident (green card holder)

Nice to have

• AWS certification
• Experience with high-scale or business-critical systems
• Experience with pricing, quoting, or other numerically sensitive business logic
• Experience building agent workflows, custom tools, or MCP integrations for your team

Benefits

• Competitive compensation and benefits
• Flexible, West Coast-friendly work environment

Before you apply

• Final-round interviews will be conducted in person in either Oakland, California, or Portland, Oregon
• Must be a U.S. citizen or lawful permanent resident (green card holder)

About the company

MISUMI Americas, a division of MISUMI Group, is a provider of standard, configurable, and custom manufacturing solutions. The company operates in the San Francisco Bay Area and Chicago.