C

Senior/Staff Backend Platform Engineer (AI-Native)

Full Remote
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Build and maintain the foundational backend infrastructure for Close’s AI-powered CRM, focusing on Python/Flask, MongoDB, and Kubernetes. Develop AI tooling (e.g., DevDawg, Spice) to streamline engineering workflows and improve developer productivity. Requires deep expertise in Python, observability, API design, and production-grade AI systems.

Key Highlights
New team with significant influence over direction and operations
Focus on AI-native backend infrastructure and developer tooling (DevDawg, Spice)
Fully remote, 130-person team with a culture of transparency and experimentation
Key Responsibilities
Design and maintain Python-based backend infrastructure (Flask, TaskTiger) for scalability and reliability
Develop AI-native tooling (DevDawg, Spice) to automate developer workflows, including code reviews and pull request approvals
Ensure observability, telemetry, and production-grade practices (metrics, tracing, alerting, Sentry ownership)
Design and maintain APIs for both human and machine consumers
Collaborate with product teams to define and implement shared infrastructure patterns
Technical Skills Required
Python Backend Infrastructure (Kubernetes, AWS, MongoDB, PostgreSQL) AI/ML Production Systems
Benefits & Perks
Paid leave for primary and secondary caregivers
1-month paid sabbatical every 5 years
Healthcare (US residents): Two medical plans with majority premium coverage, Dental, Vision, HSA, FSA, and company-paid Long-Term Disability
401k match up to 6% (US residents)
Nice to Have
Experience with Go, Rust, or TypeScript
Experience with coding agents in daily workflows
Experience shipping internet-facing APIs with consideration for both human and machine consumers

Job Description

About Us

Since 2013, we’ve built a CRM with AI integration to automate sales workflows. Our tech stack includes Python Flask, MongoDB, PostgreSQL, Elasticsearch, Redis, AWS (EKS, MSK, RDS, ElastiCache), Docker, Kubernetes, Terraform, and Ansible. We’re a 130-person, fully remote team focused on scaling sales software.

About the Role

As a Backend Platform Engineer, you’ll design and maintain the core infrastructure supporting Close’s AI-driven CRM. This includes:

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