Senior Infrastructure & Platform Engineer

Primary Responsibilities

• Own and continuously improve Apex's core enterprise infrastructure, with particular depth in Azure, where our environment spans multiple subscriptions, resource groups, virtual networking, and integrated platform services across the organization.
• Partner with ITS leadership and external security partners to continuously improve the organization's security posture, including identity hardening, network segmentation, and SIEM coverage and alert tuning.
• Own and mature Apex's infrastructure-as-code practice, building on an existing foundation of Terraform and Ansible. Apply IaC principles to automate provisioning, enforce configuration consistency, and reduce reliance on manual processes across cloud and hybrid environments — with the expectation that what is currently nascent becomes a disciplined, version-controlled standard under your ownership.
• Design, implement, and maintain identity governance controls — including privileged access management, conditional access policies, dynamic group logic, and lifecycle automation for joiners, movers, and leavers.
• Architect and support zero trust network access (ZTNA).
• Support operational technology (OT) connectivity and site infrastructure, coordinating with others to ensure appropriate segmentation and visibility between corporate IT and field environments.
• Create infrastructure documentation, runbooks, architecture diagrams, and change records. Develop the institutional knowledge that makes the team resilient, not dependent on any individual.
• Serve as a technical escalation point for ITS Operations Specialists; mentor junior team members and raise the technical baseline across the team.
• Communicate clearly and proactively with ITS leadership, stakeholders, and vendors — translating technical findings into business risk language and written briefings when needed.
• Contribute to ITS policy compliance by implementing technical controls that align with documented standards and frameworks.
• Identify and anticipate infrastructure risks before they become incidents; bring forward prioritized, actionable remediation recommendations rather than waiting to be asked.

Qualifications

• Education: Bachelor's degree in Computer Science, Information Systems, or a related field, or equivalent professional experience. Relevant certifications (e.g., Microsoft SC-100/AZ-305, CrowdStrike CCFA, CompTIA Security+) are a meaningful plus.
• Experience: 7+ years of enterprise infrastructure or platform engineering experience, with at least 3 years in a senior or lead capacity. Prior experience leading infrastructure through a cloud migration or major platform modernization initiative is strongly preferred.
• Technical depth: Expert-level proficiency in Microsoft Entra ID, Active Directory, Azure, and Microsoft 365 administration. Hands-on experience with SIEM tools, ZTNA solutions, network architecture (segmentation, VLANs, firewall policy). Familiarity with IT/OT convergence environments is a differentiator.
• Security orientation: You think about infrastructure through a security lens by default. You understand defense-in-depth principles and can map technical controls to business risk, communicating that clearly to leadership.
• Project and workstream management: Capable of managing multiple parallel technical workstreams with competing priorities. You can scope work, communicate progress, flag blockers early, and deliver against commitments without constant oversight.
• Communication: Strong written communication skills: you can produce a clear technical risk briefing, an architecture summary, or a vendor evaluation memo. You engage well with non-technical stakeholders and know when to escalate versus when to resolve.
• Collaboration and influence: Apex ITS operates as a collaborative hub – you'll need to build trust across departments, work with managed service partners and external consultants, and influence outcomes without always having direct authority.
• Character: Self-directed, intellectually curious, and calm under pressure. You take ownership, ask good questions, and leave things better than you found them. You don't wait to be told there's a problem.