Senior Systems Administrator

Company: AVUM INC
Location: Malibu
Posted on: February 19, 2026

Job Description:

Job Description Job Description Description: Avum is seeking a highly skilled Senior System Administrator to lead enterprise system operations, overseeing complex network infrastructures and implementing advanced automation solutions to ensure optimal performance, fault tolerance, and zero downtime. This role serves as the senior technical authority for system administration, ensuring the availability, reliability, and performance of mission-critical systems supporting customer applications. The position provides technical leadership across cloud-based Government enterprise environments, enterprise-scale application management, and high-availability middleware solutions, supporting secure and resilient operations. Key Responsibilities: Lead and oversee enterprise system operations, ensuring optimal performance, scalability, fault tolerance, and high availability. Serve as the senior technical leader for system administration supporting mission-critical DoD contracting operations. Design, implement, and maintain enterprise middleware solutions to support application deployment, database connectivity, and system interoperability. Orchestrate comprehensive middleware administration, including configuration, tuning, testing, security hardening, and lifecycle management. Implement advanced automation tools to enhance system performance, reliability, and operational efficiency. Ensure zero-downtime enterprise-scale application management across cloud-based Government systems. Support integration with DoD contracting systems, ensuring seamless data flow through Government enterprise middleware platforms. Enforce rigorous quality control, security, and compliance protocols aligned with DoD and Government standards. Collaborate with cross-functional teams to resolve complex system issues and ensure operational continuity. Administer and secure large-scale applications in high-availability environments. What You Will Need: U.S. Citizenship is required. An active Top Secret security clearance is required. Bachelor’s degree (BA/BS) in a technical discipline and at least 10 years of specialized experience. Specialized experience is defined as progressive experience in Information Processing, encompassing multiple disciplines and diverse hardware/software solutions. A minimum of four (4) years of hands-on experience installing, configuring, maintaining, and troubleshooting software systems. At least five (5) years of progressive experience administering enterprise middleware solutions (e.g., JBoss Fuse / Fusion Middleware). Minimum three (3) years of hands-on experience in application deployment, testing, performance tuning, and security. Experience working across multiple operating systems. Familiarity with additional programming and scripting languages. Experience supporting at least two (2) projects within large organizations responsible for administering, operating, maintaining, and securing large-scale applications. If You Have This, It’s A Plus: Current cloud security certification from major cloud providers (Oracle Cloud Infrastructure, AWS, Azure, or equivalent). Experience with Government cloud environments and enterprise DevSecOps practices. High-availability architecture and disaster recovery planning. Automation and orchestration tools. DoD compliance frameworks and security standards. What’s In It For You: Receiving a competitive compensation and benefits package that includes bonuses and 401K with 6% matching that vests immediately. Joining a mission-driven, technically forward team. Location: This role is fully remote. The candidate must be available during core Eastern Standard Time (EST) hours, Monday through Friday, and may need to travel for occasional in-person meetings. About Avum: Avum, Inc. is a certified Small Disadvantaged Business who provides advanced software, database, and business intelligence systems to the DoD/Military, Intelligence Community, and Federal, State, Local, and Commercial clients since 1991. We manage technical programs and projects and provide strategic guidance to support our customers' system engineering efforts. We provide sustainment in mission-critical and secure environments. We support information assurance activities and accreditation for the systems we deploy. Our engineers conduct rapid prototyping and Agile customer-focused iterations to produce complex applications, predictive analytic data environments, and NIST SP 800-53 compliant system architecture deployed within Navy and DoD networks. We have subject matter experts in multiple domains and technical expertise across all core technology stacks. We specialize in application development, large-scale database design, data engineering, and data visualization. Through results-driven, agile collaboration, the company continually researches and deploys secure solutions that exceed customer expectations in meeting or beating customer-allocated budgets and schedules. We aspire to the highest standards of ethical behavior and professional integrity in providing our customers with service that consistently earns us the highest possible performance ratings. Avum, Inc. does not discriminate on the basis of race, sex, color, religion, age, national origin, marital status, disability, veteran status, genetic information, sexual orientation, gender identity, or any other reason prohibited by law in providing employment opportunities and benefits. Requirements:

Keywords: AVUM INC, Rosemead , Senior Systems Administrator, IT / Software / Systems , Malibu, California