OneMain Financial Jobs

Key Responsibilities

• Configure, maintain, and administer a blended Windows/Linux infrastructure environment, including:
  1. System deployment - Hardware assembly, OS installation and configuration, permissions configuration, and security hardening
  2. System maintenance - User management, installation, configuration, and update of software, patches, and firmware
  3. System optimization - Monitor system performance and health to identify opportunities for performance improvement, implement system tuning
  4. Automation - Scripting routine tasks using BASH, Python, and PowerShell
• Linux systems administration including identifying and troubleshooting issues with permissions and user rights, networking, performance and responsiveness, and system functionality problems resulting from security hardening
• Coordinate with project engineering teams to understand their project needs, gather requirements, and customize provided services to meet those needs
• Provide support and administration of security and management systems (switches, firewalls, domain controllers, virtualization stack) in accordance with candidates expertise
• In-person, voice, and chat support to users for laptop configuration, network settings, hardware peripherals, and standard end user applications
• Configure, manage, and maintain auditing tools used in the classified spaces. (Kibana or Splunk experience preferred)
• Perform system backups, Assured File Transfers, and secure decommissioning of hardware in compliance with DoDpolicies
• Implement and verify Security Technical Implementation Guides (STIGs) and security controls per NIST SP 800-53 for classified networks (WAN, ISOL, LAN)
• Support vulnerability scanning and remediation using approved tools (i.e, Nessus)
• Deploy and maintain log aggregators (i.e., Kibana)
• Coordinate and collaborate with the ISSO, ISSM, Contract Program Security Officer (CPSO)/Facility Security Officer (FSO), and IT teams to implement and enforce system security controls through incident reporting and investigation, system and process documentation, and establishment and maintenance of configuration management baselines
• Participate in recurring assessment activities (Incident Management Drills, Security Configuration Board Meetings, Change Control Board meetings)
• Support cyber awareness training by providing technical input on system usage and security best practices.

Requirements for Position

• Bachelors Degree and 4+ years as a Systems Administrator or IT specialist (additional experience is considered in lieu of degree).
• Full-Time, In-Person
• Hands-on system administration experience, including command line/shell activity, with Windows Server (2019/2025, Windows 10/11, Red Hat, and other Linux distributions in enterprise or DoD environments.
• Expertise troubleshooting services and protocols such as TCP/IP, DNS, FTP, SSH, SCP, SSL, HTTP/HTTPS
• Ability to obtain and maintain one or more of the following: CGRC, CND, CompTIA Security+, CompTIA CYSA+, SecurityX / CASP+, CCNP Security, CCSP, Cloud+, FITSP-O, GFACT, GICSP, GSEC, Network+, and SSCP.
• Self-starter, highly motivated, able to multi-task and meet tight deadlines. A strong candidate must have the ability to work well under pressure and deal with changing priorities.
• Must have excellent work habits, including a willingness to work the hours necessary to get the job done.
• Excellent communication skills (oral and written), ability to work in team environment, and must work well with others.
• Effective problem solving and a proven ability to cope with conflict, stress and crisis situations.

Strongly Preferred

• Proficiency in managing Windows Server, Active Directory, Group Policies, and Red Hat system security configurations (e.g., SELinux, FAPolicyD, firewall rules)
• Experience configuring systems to comply with DoD STIGs, NIST SP 800-53 requirements
• Experience with desktop virtualization programs (e.g., Oracles VirualBox), Adobe, and Office365 tools and programs
• Preference for experience in Research and Development and US military environments supporting complex COTS and GOTS integration
• Familiarity with scripting (e.g., PowerShell, Ansible, Java, Python, Bash) to automate system administration tasks
• Knowledge of vulnerability and compliance scanning tools (e.g., Nessus, OpenSCAP, SCC) and configuration management tools
• Understanding of network protocols, firewalls, and secure file transfer methods.
• Working knowledge of NIST SP 800-53, RMF JSIG, and DOD/DCSA security policies and manuals

About Apogee Research

Apogee Research offers a comprehensive benefits package that includes health, dental, vision, life, and disability insurance, FSAs, paid vacation, sick leave, and paid holidays. Conveniently located in Arlington, V