Senior IT Systems and Infrastructure Engineer

About Forterra

At Forterra, we are unleashing autonomy at scale to transform the battlefield. Our mission is to build the foundational platforms that enable an intelligent ecosystem to coordinate, adapt, and execute with speed and precision even in the uncertainty and disruption of modern conflict. In an era marked by rapid technological change and evolving threats, we design for flexibility, survivability, and operational dominance.

Forterra delivers weapons, sensors, and battlefield effects through integrated autonomous networks reaching operational areas faster, safer, and without placing human lives  systems operate with distributed control, dynamic routing, and real-time responsiveness, enabling sustained advantage across complex mission environments.

The Forterra Enterprise Services team seeks a Staff IT Infrastructure Engineer with strong, hands‑on experience across both Windows and Linux systems administration, deep expertise with Microsoft Entra  Azure within a GCC-High tenant, and ownership of our on‑prem infrastructure, including Proxmox virtualization, Net App storage, and backup/DR. This role also carries responsibility for architecting new infrastructure solutions at an enterprise level and managing deployments across Forterra's multiple sites, partnering closely with Cybersecurity, Network Engineering, and Development to keep the environment scalable, secure, and performant.

Forterra operates in a fast-moving, resource-constrained environment where infrastructure engineers are expected to cover significant ground rather than stay narrowly specialized. This role requires sound judgment navigating a complex, compliance-driven environment (GCC‑High, CUI, CMMC/NIST 800-171/ISO 27001), a solid foundation across both Windows and Linux, real ownership of on‑prem systems, the ability to design solutions that hold up at enterprise scale across multiple locations, and willingness to respond after‑hours when infrastructure emergencies arise.

• Be a key member of Forterra's Infrastructure team, owning both Windows and Linux systems administration across a hybrid, multi‑cloud environment.
• Architect and design new infrastructure solutions at an enterprise level, and manage deployment and rollout across multiple Forterra sites.
• Administer Microsoft Entra  Azure, including Azure Government, within our GCC‑High tenant, alongside Proxmox, AWS, Palo Alto, and Juniper infrastructure.
• Administer and harden both Windows Server and Linux environments (Ubuntu, Debian, Proxmox VE), covering patching, security baselines, and compliance.
• Own on‑prem infrastructure end to end:
  Proxmox virtualization, Net App storage, and identity/endpoint management via Active Directory, Entra , and Intune.
• Automate provisioning and configuration using Configuration as Code tooling such as Ansible, reducing manual overhead across the environment.
• Own disaster recovery and business continuity strategy for cloud and on‑prem services, leveraging Veeam and Proxmox Backup Server.
• Participate in after‑hours, on‑call response for infrastructure emergencies, and mentor junior team members as the team grows.

Mission-First Mindset
- We put the needs of the mission and our customers first and understand that the US and its allies have no preordained right to victory in any future conflict.

Ownership Mentality
- We're looking for owners; those who have a natural bias to assume responsibility, a healthy dose of skepticism, and contribute to a culture of performance.

Technical Aptitude and Intellectual Curiosity
- We are first and foremost a technology company, and this role requires genuine curiosity to operate across a broad, evolving infrastructure stack rather than staying within a narrow…