Lead Linux Implementation Engineer

Who Are We

CalCom is a cybersecurity software company specializing in automated server hardening and security compliance for enterprise environments.

Our solution helps large organizations, especially in regulated industries such as finance, secure their Linux and Windows servers, prevent misconfigurations, and maintain compliance with standards like CIS and NIST, all without disrupting business operations.

We work with complex, large-scale infrastructures and deliver real impact where security and reliability are critical.

We are looking for a hands-on Linux expert to lead the implementation of our solution in enterprise customer environments.

This is a technical, customer-facing role focused on Linux infrastructure, troubleshooting, and security hardening. You will be responsible for deploying, customizing, and supporting our product in real-world production environments.

This role is ideal for someone who enjoys working close to the systems, solving complex problems, and taking ownership from implementation through ongoing support.

• Lead end-to-end implementation of CalCom’s Linux solution in enterprise environments
• Perform hands-on Linux hardening across large production systems
• Install, integrate, and configure the CalCom CHS platform
• Provide Tier 1 & Tier 2 support, including troubleshooting and issue resolution
• Investigate system behavior related to security policies, OS configurations, and infrastructure changes
• Customize and automate deployments using scripting tools
• Work closely with Product and R&D teams to improve the solution based on real customer needs
• Collaborate directly with customer IT and infrastructure teams

• Must pass security clearance 
• 5+ years of hands-on experience in Linux system administration in production environments
• Strong experience with RHEL / OEL / AWS Linux / Ubuntu
• Proven ability to troubleshoot complex system and infrastructure issues
• Experience with scripting (Bash / Shell / Python)
• Experience with LDAP systems
• Experience with configuration management tools (Ansible / Puppet / Chef)
• Familiarity with enterprise infrastructure (Active Directory, DNS, DHCP)
• Strong communication skills and ability to work with customers

Additional Requirement:

• Ability to pass security background checks required for working with financial institutions

• Experience with Linux hardening (CIS benchmarks or similar)
• Experience with security tools such as iptables, SELinux
• Background in cybersecurity or regulated environments