IT Systems Administrator
Listed on 2026-10-17
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IT/Tech
Systems Administrator, IT Support, Cybersecurity, Cloud Computing: Infrastructure & Operations
Career Opportunities with Mantel Technologies
A great place to work.
Current job opportunities are posted here as they become available.
Company IdentityMantel Technologies operates as a platform for innovation with a track record of executing product-centric research and development. The company is focused on driving technology advancements from concept to product with a focus on niche and emerging needs in the National Security/Defense sector with potential dual-use applications. This position sits within Mantel's Defense Technology division while directly supporting company-wide corporate IT initiatives.
Position OverviewMantel is seeking an IT Systems Administrator to join our team in Columbus, Ohio. This role will oversee local developer infrastructure, cloud systems, and day-to-day corporate IT operations to support the organization. In addition, this position will work directly with embedded engineering project teams on R&D initiatives - designing and building new software tools, applications, and computing environments, while maintaining existing codebases and systems.
Location:Columbus, OH - Fully Onsite Responsibilities:
Cloud, Server & Container Infrastructure (Primary)
Cloud Infrastructure (GCP / AWS):
Administer developer cloud environments, manage IAM/service accounts securely, and configure networking (VPCs, firewalls, Cloud Armor).
Server & Container Management:
Maintain internal Linux development servers (patching, SSH access, resource monitoring) and manage containerized environments, including Docker, image registries, and persistent storage.
Application Maintenance:
Deploy updates, manage releases, and ensure uptime for internal applications (e.g. Twenty CRM), including managing weekly database backups and restoration procedures.
User Lifecycle & Workspace Management:
Act as the primary IT lead for Tier 1-3 support. Manage onboarding/offboarding, permissions, licenses, and shared resources (drives, groups, calendars) within Google Workspace.
Device & Endpoint Provisioning:
Utilize IBM MaaS
360 (MDM) to provision new laptops, push corporate applications, enforce security policies/passcode requirements, and retire devices.
Cybersecurity & Compliance:
Drive compliance with Cybersecurity Maturity Model Certification (CMMC) requirements and defense regulatory security controls across corporate systems.
Software & Application Development:
Work closely alongside a skilled, highly capable team of developers and technical leads to design, build, and maintain software tools, scripts, and applications utilizing Python, Windows/Linux shell scripting.
R&D Computing Support:
Support developer workflows, high-performance computing tasks, containerized environments, and custom build tooling.
Bachelor of Science (B.S.) in Computer Science, Computer Engineering, Information Systems, or a similar discipline
Multiple years of professional experience in systems administration, IT operations, or software development
U.S. Citizenship is required
Ability to obtain and maintain a U.S. Government Security Clearance
Why Mantel:At Mantel, we build high-impact software and hardware solutions that support survivability and mission readiness. In this role, you will work directly with an agile engineering team on active R&D projects - building software, managing developer infrastructure, and seeing the direct, tangible impact of your work.
Mantel also supports you with:Health & Wellness Support:
We offer a solid healthcare package that includes Medical, Dental and Vision coverage to support you and your family's everyday needs
Future-Ready
Financial Benefits:
Contribute to your future with our 401(k) plan, including company contributions to help you build long-term financial stability
Peace of Mind Coverage:
We provide Long-term and Short-term Disability, AD&D, and Life Insurance to help protect you and your loved ones from life's unexpected challenges
Recharge and Refocus:
Take the time you need with our generous PTO policy, designed to help you maintain a healthy work-life balance
Work with Flexibility:
We support flexible work schedules to help you do your best work in a way that works for you and your team
Mantel is an Equal Opportunity Employer and supports diversity in the workplace. Applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, veteran status,…
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