Sr. Systems Administrator/Infrastructure Architect (On site)

Kloud9 IT, Inc.•Columbus, OH

2h•$90,000 - $110,000•Onsite

About The Position

The Sr. Systems Administrator (Tier 3) Team Lead is a senior technical project resource responsible for designing, implementing, and standardizing client infrastructure environments. The role focuses on new client onboarding, infrastructure design, project execution, technical standards, and scalable implementation practices. It collaborates with project coordination, service delivery, technical leadership, client leads, and client stakeholders to deliver projects efficiently, securely, and in accordance with company standards. The position also provides day-to-day technical leadership and serves as the primary and final internal escalation point for complex tickets assigned to the team. The Team Lead guides Tier 1 and Tier 2 technicians, supports root cause analysis, improves documentation and training, and determines when vendor or external escalation is appropriate. Personnel management remains with the designated manager unless otherwise assigned.

Requirements

Senior-level understanding of Microsoft 365, Entra ID, Exchange Online, SharePoint, Teams, Intune, and endpoint management.
Strong experience with Windows Server, Active Directory, DNS, DHCP, Group Policy, virtualization, storage, and backup.
Networking knowledge including firewalls, VPNs, VLANs, routing, switching, wireless, and ISP coordination.
Experience designing and implementing secure, supportable client infrastructure environments.
Strong technical documentation, project handoff, and standards development skills.
Ability to translate technical requirements into repeatable project templates and implementation checklists.
Working knowledge of cybersecurity best practices, EDR/XDR, MFA, Conditional Access, vulnerability remediation, and secure configuration standards.
Ability to collaborate with project coordination, service delivery, account management, and technical teams.
Strong leadership and mentoring skills to guide and develop Tier 1 and Tier 2 technical staff.
Expert-level troubleshooting, root cause analysis, prioritization, and escalation decision-making skills.
Ability to balance project responsibilities with escalated-ticket and major-incident support.
15+ years of progressive IT experience is preferred.
Experience implementing infrastructure, cloud, security, Microsoft 365, and network-related projects.
Strong written and verbal communication skills.
Ability to work independently while collaborating with project and service teams.
Strong organizational skills and ability to manage multiple project priorities.

Nice To Haves

MSP experience in a growing or mature service delivery environment.
Experience with PSA, RMM, documentation platforms, and standardized onboarding workflows.
PowerShell or automation experience.
Experience supporting compliance-driven environments such as CMMC, SOC 2, PCI, HIPAA, or NIST 800-171.
Microsoft, security, cloud, networking, or project-related certifications.
Experience supporting client roadmap planning, project discovery, and technical remediation planning.
Previous technical lead, escalation lead, or senior mentoring experience.
Experience working in an MSP, professional services, or multi-client IT environment.

Responsibilities

Design and implement infrastructure solutions for new clients and existing-client projects.
Ensure new client environments meet company technical, security, documentation, and operational standards.
Design Microsoft 365, Entra ID, server, networking, backup, endpoint, security, and cloud solutions.
Review client environments and recommend remediation plans to improve scalability, security, and supportability.
Support infrastructure upgrades, migrations, refresh projects, and modernization initiatives.
Lead technical onboarding for new clients, maintain onboarding templates and deployment standards, identify environment gaps, and ensure documentation is complete for handoff.
Serve as the primary senior technical resource for assigned professional services projects and work with the Project Coordinator on timelines, communications, scheduling, and deliverables.
Provide technical guidance during project planning, discovery, implementation, and handoff; identify risks, dependencies, scope concerns, and blockers.
Maintain clear project documentation, implementation notes, and internal handoff details.
Assist Client Leads with larger existing-client projects, including Microsoft 365, server, network, backup, security, and compliance initiatives.
Provide technical escalation support for project-related issues and coordinate project work with Service Delivery and Account Management.
Serve as the primary and final internal technical escalation point for Tier 1 and Tier 2 engineers on complex incidents, service requests, and infrastructure issues assigned to the team.
Coach technicians, provide hands-on technical direction, review complex or recurring tickets, and support root cause analysis and appropriate resolution.
Determine whether issues should be handled internally, addressed through training or documentation, or escalated to a vendor or external resource.
Participate in major incident response and help coordinate technical resources for business-critical client issues.
Create and maintain SOPs, troubleshooting guides, knowledge base articles, technical standards, and focused training recommendations.
Support ticket prioritization and communicate technical risks, blockers, ownership, and next steps to the Service Delivery Manager and affected stakeholders.
Develop and maintain project templates, infrastructure build standards, and repeatable deployment processes.
Identify automation and process improvement opportunities, promote supportable client environments, and help reduce technical debt.
Contribute to internal standards for compliance-focused environments and applicable controls.