Sr. Linux System Administrator/System Engineer

Description Columbia Technology Partners is seeking a skilled Senior Linux System Administrator / Systems Engineer to support a mission‑critical, IC‑wide service environment. This role is ideal for a hands‑on professional with deep Linux expertise who enjoys working across infrastructure, virtualization, and automation technologies in secure, high‑availability environments. Multiple shift options are available, including day shifts, weekday evening or night shifts, or 12‑hour weekend shifts (Saturday and Sunday). You will play a critical role in maintaining and optimizing Linux‑based systems, supporting enterprise infrastructure components, and ensuring system reliability and compliance across secure environments. Key Responsibilities Administer, configure, and maintain Linux systems (CentOS/RHEL) in a production environment Install, configure, and support JBoss / WildFly application servers Build, configure, and manage VMware virtual machines, ensuring optimal performance and availability Support system operations within a secure, mission‑driven IC environment Assist with automation and configuration management, including use of Ansible where applicable Monitor system performance and troubleshoot issues across compute, storage, and network layers Support security compliance, authentication mechanisms, and system hardening activities Perform scripting and automation tasks using shell and/or Python Contribute to physical server administration and infrastructure support as needed Collaborate with cross‑functional teams to maintain system stability and meet mission requirements Qualifications 10+ years of Linux administration/engineering (RHEL/CentOS) in enterprise environments Strong experience with JBoss/WildFly, VMware, and secure system operations Proficiency in scripting (Shell/Python) and troubleshooting across infrastructure stacks Experience supporting mission‑critical systems with performance and reliability focus Familiarity with Ansible, storage, networking, authentication, and security compliance/hardening Nice to have: Linux cert, basic Oracle DBA exposure, and experience with JSON Requirements U.S. Citizenship is required for all applicants. CTP is an equal opportunity employer and abides by applicable employment laws and regulations. All applicants and employees are subject to random drug testing in accordance with Executive Order 12564. Employment is contingent upon successful completion of a security background investigation and polygraph. Certification Requirements: DOD 8570 Certification Active Security Clearance with appropriate Polygraph is required. Benefits Medical: CTP offers 3 superior plans, bringing our employees both in‑network and out‑of‑network options. Vision + Dental: Both free to you + paid in full by CTP. Retirement: 401k – 6% company contribution. PTO + Leave: A work‑life balance is extremely important to our team here at CTP, which is why our paid time off plans are so lucrative. Offering customizable leave plans to meet your needs is just one of our many perks! Jury Duty, Bereavement + Military Leave provided. Career Growth: Up to $10,000 provided for approved career‑related learning, training, education, and/or tuition. Life and AD&D Insurance / Short‑Term & Long‑Term Disability: More peace of mind, at zero cost to you. Profit Sharing Bonus: End‑of‑year cash gets added to your bottom‑line. Referral Bonus Program: Our tiered program provides an incentive with each stage of the hiring process your referral passes. Our bonuses range from $7,000‑$20,000, if your referral joins the team. Columbia Technology Partners is an Equal Opportunity Employer. We consider applicants without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, or membership in any other group protected by federal, state, or local law. Our EEO policy reflects our commitment to ensure equality and promote diversity and inclusion in the workplace. Our policy applies to all employees, job candidates, contractors, stakeholders, partners, and visitors. #J-18808-Ljbffr Columbia Technology Partners