Senior Backend Engineer - Backend Platform (USA Only, 100% Remote)

The role

You will build the foundation for other engineers by developing API layers, backend frameworks, and AI development platforms. You will also expand cloud development environments and automated review tooling.

What you will do

• Expand DevDawg and Spice cloud development and automated review environments
• Build paved roads for the API layer including REST, GraphQL, and OpenAPI
• Modernize the backend framework layer including Flask and FastAPI migrations
• Own production observability, metrics, alerting, and readiness
• Ship shared backend services, eventing patterns, and database migration guardrails
• Set guardrails for coding agents via static analysis, linting, and test harnesses
• Partner with Infrastructure to manage the application layer on AWS and Kubernetes

Required qualifications

• Seasoned Python engineer
• Shipped meaningful LLM-backed or agentic work to real users
• Use coding agents in daily workflow
• Fluent in observability and production practice
• Opinionated about API design
• Experience debugging incidents with latency budgets and owning critical systems
• Builder first mindset

Nice to have

• Go
• Rust
• TypeScript

Benefits

• Competitive pay plus an organization-wide goal-based bonus
• ~5 weeks of PTO to start
• 1-week all-company Winter Holiday Break
• Paid US holidays
• 2 extra days of PTO for every year with Close
• 80% Work Option: 4-day week at 80% pay
• Paid leave for primary and secondary caregivers
• 1-month paid sabbatical every 5 years
• Best-in-class health coverage for US residents
• Dental, Vision, HSA, FSA, and company-paid Long-Term Disability
• 401k match up to 6% for US residents, vested immediately

Before you apply

• USA Only
• Applications that read as fully AI-generated will not be considered
• Role-specific questions are part of the application process

About the company

Close is a bootstrapped and profitable company with a 130-person, 100% remote team building an AI-powered CRM.