Systems Development Engineer Jobs in St. Louis, MO

Own your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise directly, contributing to a mission that protects our nation every day.

User Facing Data Center (UDS) Program is thriving and growing, and we want talented professionals already powering the mission to help shape its future. As an incumbent supporting our customer’s enterprise IT operations, you bring essential knowledge that strengthens continuity, accelerates success, and drives innovation. By joining GDIT, you can continue the work you excel at while gaining new opportunities to grow in modernization, engineering, automation, and enterprise level operations. Your experience matters here, and we’re committed to investing in your success as you continue supporting a mission that relies on your expertise.

MEANINGFUL WORK AND PERSONAL IMPACT

As a Mobile Device Systems Administrator Senior supporting GDIT, you design, engineer, administer, manage and implement secure enterprise mobile device solutions that enable the global workforce to operate safely across multiple networks and security domains. You ensure mobile platforms remain compliant, accredited, up-to-date, and integrated seamlessly into the broader Enterprise IT Infrastructure. Your work directly supports mobility, security, mission responsiveness, and modernization efforts across the enterprise.

KEY RESPONSIBILITIES:

• System Administration: Engineer, design, configure, implement and support secure enterprise Mobile Device Management (MDM) solutions for mobile phones, tablets, laptops, and other mobility devices
  • Test, validate, and document mobile device configurations, updates, and system changes prior to deployment
  • Troubleshoot and resolve advanced mobile device issues, including configuration, security control, certificate, and connectivity problems
  • Support modernization efforts by evaluating and engineering emerging mobile technologies and capabilities

• Policy Management: Draft, deploy, and enforce security profiles, compliance policies, and configuration profiles for mobile endpoints.
  • Integrate mobile solutions with enterprise authentication, identity, security, monitoring, and network services
  • Ensure mobile platforms meet all cybersecurity, configuration, and compliance requirements across the DoW, and IC environments

• Software Management: Deploy approved apps, operating system updates, and security patches

• Maintain security and compliance through patch deployment, vulnerability response, and ongoing monitoring of mobile device health and posture

• Device Provisioning: Manage the enrollment, configuration, and setup of all mobile devices.
• Asset Tracking & Lifecycle: Monitor hardware inventory, track device locations, and securely decommission or wipe retired equipment.
• Compliance & Reporting: Monitor system status in real-time, enforce OS patching requirements, and generate compliance reports for audits.
• Tier-3 Support: Serve as the final escalation point for complex mobile hardware, software, and network issues
• Stay current with evolving mobile platforms, security requirements, and enterprise mobility best practices
• Support all other functions and requirements of the mobile device PITD team

WHAT YOU’LL NEED TO SUCCEED:

• EDUCATION: Bachelor’s degree in an IT-related field, or 10+ years of relevant IT experience in lieu of a degree
• CERTFICATION: Meet DoW 8140 Information Assurance Workforce certification requirements (e.g. Security+ CE, etc.)
• CLEARANCE: Active TS/SCI clearance with a favorable polygraph
• MDM Platform Expertise: Hands-on experience with enterprise solutions like Microsoft Intune
• Operating System Proficiency: Deep understanding of iOS, iPadOS, Android, and Windows/macOS endpoint environments.
• Ecosystem Management: Familiarity with Apple Business Manager (ABM)
• Experience engineering or administering MDM solutions within enterprise or DoW/IC environments
• Strong background in mobile security, authentication, compliance controls, and secure device configuration
• Experience supporting IATT/ATO activities and working within the Risk Management Framework
• Proven ability to troubleshoot complex mobile devices, security, and connectivity issues across networks and platforms
• US citizenship required
• LOCATION: Customer Site

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.

• Growth: AI-powered career tool that identifies career steps and learning opportunities
• Support: An internal mobility team focused on helping you achieve your career goals
• Rewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off
• Flexibility: Full-flex work week to own your priorities at work and at home
• Community: Award-winning culture of innovation and a military-friendly workplace

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