System One · 1 day ago
Systems Engineer
Melbourne, FL
Contract
Hybrid
Senior Level
5+ years expSystem One is seeking a Systems Engineer for a long-term opportunity with a well-established financial organization in Melbourne, FL. The role involves designing, implementing, and maintaining enterprise Microsoft platforms while optimizing Active Directory and supporting Microsoft 365 services.
Staffing Agency
Responsibilities
Active Directory Engineering – Administer multi-site, multi forest AD DS; design replication, schema/forest upgrades, delegated OU structures, and PKI/CA integration
Hybrid Identity & Entra ID – Plan, deploy, and maintain Azure AD Connect / Cloud Sync, Hybrid Join, Conditional Access, PIM, and SSO integrations (SCIM, SAML, OAuth/OIDC)
Intune / Autopilot / Endpoint Security – Build and maintain Intune tenant, migrate legacy GPOs to Intune, create Autopilot deployment rings, publish compliance & configuration profiles, implement Defender for Endpoint and Proactive Remediations
Proofpoint Administration – Install, configure, and tune PPS/TAP clusters; manage policies, mail flow connectors, quarantine, and threat intel; troubleshoot end to end message delivery
Microsoft 365 Services – Administer Exchange Online (hybrid mail flow, EOP), SharePoint Online, OneDrive, and Teams retention/eDiscovery
Automation & Scripting – Develop PowerShell / Graph scripts for deployment, reporting, and Proofpoint/Intune automation; maintain CI/CD pipelines where applicable
Technical Support – Provide Tier III response and on call escalation for identity, device management, mail security, and collaboration platforms
Project Participation – Lead or contribute to IT projects, create charters, timelines, and deliverables, and coordinate with cross functional teams
Documentation – Produce and maintain high level/low level designs, runbooks, SOPs, and change control artifacts
Security & Compliance – Enforce security baselines and FFIEC/NCUA requirements; participate in audits and risk assessments
Vendor Liaison – Act as primary contact with Microsoft, Proofpoint, and other vendors for support cases, roadmap alignment, and licensing
Continuous Improvement – Track emerging Microsoft and Proofpoint capabilities; recommend and pilot new features to enhance resilience, security, and user experience
Qualification
Required
5+ years' experience designing and implementing Azure AD Connect / Cloud Sync topologies, Hybrid Join, federation models
5+ years' experience designing and implementing Intune MDM/MAM, Windows Autopilot, and GPO to Intune migration
5+ years' experience designing and implementing Proofpoint PPS & TAP secure mail gateways, including DMARC/DKIM/SPF tuning
5+ years' experience designing and implementing Entra ID SSO, SCIM provisioning, SAML 2.0, OAuth/OIDC, and Conditional Access
Strong PowerShell / Graph automation skills; ability to create JSON/Win32 and Proactive Remediation scripts
Excellent analytical and root cause troubleshooting skills for multi discipline issues (identity, mail flow, endpoint, security)
Effective project management, task prioritization, and stakeholder communication abilities
Preferred
Microsoft 365 Enterprise Administrator Expert (MS 102)
Entra ID Administrator Associate (SC 300) or Intune Administrator Associate (MD 102)
Proofpoint Certified Specialist (PPS/TAP); CISSP, CISM, or similar
Benefits
Health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
Company
System One
System One is a professional staffing firms.
5001-10000 employees
H1B Sponsorship
System One has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (5)
2024 (6)
2023 (9)
2022 (10)
2021 (9)
2020 (5)
Funding
Current Stage
Late StageTotal Funding
$301.8MKey Investors
TruistOaktree Capital ManagementProspect Capital Corporation
2021-01-28Debt Financing· $290M
2020-12-08Private Equity
2016-09-20Acquired
Leadership Team
Troy Gregory
Chief Executive Officer
Dan Moran
Chief Financial Officer
Recent News
2026-01-06
Company data provided by crunchbase