Senior Cloud Infrastructure Engineer (San Francisco)

Job Description

Phosphorus is seeking a Senior Cloud Infrastructure Engineer to join our Core Infrastructure Engineering team. This fully remote role is ideal for an experienced engineer passionate about Infrastructure as Code (IaC), cloud automation, and production reliability.

Responsibilities :

• Design, build, and maintain scalable cloud infrastructure services in AWS and GCP.
• Contribute production-quality Go and Python code to existing cloud services.
• Develop and own automation and software deployment pipelines with maximum efficiency.
• Implement Infrastructure as Code (IaC) practices using Terraform, Ansible, Packer, or similar tools.
• Maintain and improve the custom RHEL-based OS platform hosting the Phosphorus solution.
• Design and enhance secure, reliable field software update capabilities.
• Manage production software release pipelines, ensuring stability and efficiency.
• Maintain system security plans, ensuring compliance with best practices for security, observability, reliability, and performance.
• Configure and optimize cloud networking components (firewalls, VPNs, load balancers, routing tables, etc.).
• Support and improve internal DevOps tooling for engineering teams.
• Monitor and enhance service availability, ensuring high uptime and resilience.
• Collaborate with engineering teams to implement observability, logging, and security best practices.

Essential Qualifications :

• 5-10 years of experience working with containerized applications (Docker, Kubernetes, etc.).
• Strong proficiency in Go and / or Python.
• Experience provisioning virtual machines and infrastructure automation with Terraform, Packer, Ansible, or similar tools.
• Hands-on experience deploying and managing cloud-based infrastructure in AWS or GCP.
• Experience with maintaining OS package mirrors, package deployment infrastructure, and custom DEB or RPM packaging (preferred).
• Strong knowledge of production software release pipeline and asset management concepts.
• Familiarity with cloud security best practices and ability to author customer-facing security documentation.
• Experience maintaining system security plans for cloud services and their dependencies.
• Proven track record of building and maintaining cloud-based or virtualized appliance clusters for high-availability (HA).
• Strong ownership mindset, accountability for production stability, and ability to thrive in a fast-paced startup environment.
• Excellent problem-solving, communication, and collaboration skills.

Additional Preferred Qualifications :

• Experience building and managing custom DevOps tooling for engineers.
• Expertise in Linux networking and scripting in Bash.
• Experience with cryptography and secret management.
• Experience with postgres database management and redundancy.
• Experience scripting in and maintaining application build systems driven by Makefiles.
• Strong background in cloud networking, including firewalls, VPNs, routing tables, and load balancing.
• Passion for automation and continuously improving infrastructure efficiency.

About us :

Phosphorus Cybersecurity is the leading x Tended Security of Things platform designed to secure the rapidly growing and often unmonitored Things across the enterprise x IoT landscape. Our Enterprise x IoT Security Platform delivers Attack Surface Management, Hardening & Remediation, and Detection & Response to bring enterprise x IoT security to every cyber-physical Thing in your enterprise environment. With unrivaled x IoT discovery and posture assessment, Phosphorus automates the remediation of the biggest IoT, OT, and Network device vulnerabilitiesincluding unknown and inaccurate asset inventory, out-of-date firmware, default credentials, risky configurations, and out-of-date certificates.

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