Senior Linux Security Engineer

Gray Tier Technologies is seeking a Senior Linux Security Engineer to conceptualize, design, build and maintain current and future customer-supported tools and platforms.

Primary Responsibilities:

• Manage multiple assignments and work independently with minimal oversight.
• Produce system design documents. Support architectural analysis of cyber security features and existing system related to future needs and trends.
• Review and provide input to system requirements based on cybersecurity posture.
• Compile industry best practices and lessons learned into future iterations and new designs.
• Provide broad-based experience in IT Service Management. Apply the experience to specific cyber security initiatives relating to system design, development, operations and maintenance.
• Employ measures to ensure the deployed infrastructure is secure and available.
• Advise and assist team members to deploy and configure collection services and tools.
• Develop processes to evaluate and improve all operating systems, hardware, software and firmware solutions.
• Work closely with stakeholders to solve technical problems at the network, system and application levels.
• Collaborate, coordinate and build relationships with customer representatives and external stakeholders.
• Conduct periodic architectural reviews of installed sensors to assess effectiveness and propose optimal installation alternatives as required.
• Draft technical documentation, reports and presentations as needed for customer or internal use.
• Manage physical and virtual infrastructure and troubleshoot problems to successful completion.
• Create and manage shell scripts for task automation and log extraction.
• Develop solutions to complex technical issues.
• Provide follow-up reports (technical findings, feedback, resolution steps taken) for root cause analysis, engineering technical assessments and process improvement initiatives.
• Provide training and documentation for customer and internal teams.
• Review and approve documentation and diagrams (e.g., system specifications).
• Identify tasks and issues that may have an impact on service levels or schedules and provide realistic schedule and cost estimates.
• Maintain a current working knowledge of IT development methodology, architecture design, security best practices and technical standards.
• Communicate with other technical leads, IT groups and customer reps so they understand all aspects of proposed changes/solutions.

Basic Qualifications:

• BS degree in Science, Technology, Engineering, Math or related field and 10-12 years of prior relevant experience with a focus on cybersecurity OR Masters with 8-10 years of prior relevant experience.
• Extensive expertise with Azure services and components to build, manage, and maintain Azure Cloud environments.
• Experience installing, configuring, securing and troubleshooting Linux in a Cloud environment, preferably in Azure.
• Extensive automation experience with PowerShell and Shell Scripting for automating repeatable tasks and installations.
• Extensive knowledge of server operations and maintenance
• Extensive experience managing enterprise networks.
• Understanding of cloud terminology, architecture, and tools to include installing, provisioning and monitoring.
• Department of Homeland Security (DHS) Entry on Duty (EOD) is required to support this program.

Preferred Qualifications:

• Current Top Secret clearance.
• Experience administrating PKI and HSM Environments.
• Experience installing, configuring, and maintaining tools such as Tanium, Nessus, Forescout and Cyberark in a hybrid-cloud environment.
• Experience automating management tasks with Ansible, Puppet, or Chef.
• Experience working among different Cloud Provider environments (Azure, AWS, GCP).
• Experience with RHEL.
• Experience with Gemalto.
• Experience developing in Bash, Python, and/or Powershell.
• Experience working with SIEM tools such as Splunk to ingest, normalize, store, and maintain data from endpoint, network, and application sourcetypes.