IT Systems Administrator Sr
Job in
San Diego, San Diego County, California, 92189, USA
Listed on 2026-03-01
Listing for:
Sedgwick Claims Management Services Ltd
Full Time
position Listed on 2026-03-01
Job specializations:
-
IT/Tech
Systems Administrator, Systems Engineer, Network Administrator, Cybersecurity
Job Description & How to Apply Below
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Posted Todayjob requisition :
R70249
By joining Sedgwick, you'll be part of something truly meaningful. It’s what our 33,000 colleagues do every day for people around the world who are facing the unexpected. We invite you to grow your career with us, experience our caring culture, and enjoy work-life balance. Here, there’s no limit to what you can achieve.
Newsweek Recognizes Sedgwick as America’s Greatest Workplaces National Top Companies Certified as a Great Place to Work Fortune Best Workplaces in Financial Services & Insurance
IT Systems Administrator Sr
** Senior Level Active Directory Infrastructure Engineer (Hybrid AD)
**** PRIMARY PURPOSE OF
THE ROLE:
** We are seeking a highly skilled and experienced Senior Active Directory Infrastructure Engineer to join our team. This role is responsible for the design, administration, and ongoing support of our on‑premises Active Directory infrastructure and Entra t. The ideal candidate is a self‑motivated, proactive professional who can independently own initiatives, identify opportunities for improvement, and drive enhancements from concept through completion.
This position requires deep expertise in Active Directory, Entra , and related technologies to ensure the security, reliability, and efficiency of our directory services
We are looking for enthusiastic candidates who thrive in a collaborative environment, who are driven to deliver great work, are customer-oriented and are naturally empathetic.
** ESSENTIAL RESPONSIBLITIES MAY INCLUDE
*** Design, implement, and manage hybrid Active Directory infrastructure.
* ** Advanced troubleshooting and knowledge of AD replication, Trusts, Group Policy Management, LDAP, Kerberos, AD security, AD Federation Services, and DNS.
*** Perform regular maintenance, updates, and troubleshooting of on-premises Active Directory across multiple forests.
* ** Migration support, project planning, design and implementation of migrating AD objects between domains, and collaboration to decommission legacy domains post migration.**
* ** Participate in on-call rotation for 24x7 incident response, be available for flexible work hours as needed to conduct changes in off-hour change windows.
*** Develop and enforce security policies and procedures for directory services.
* Collaborate with other IT teams to ensure seamless integration of directory services with other systems and applications.
* Monitor Active Directory and domain controller performance and implement improvements to optimize efficiency and reliability.
* Provide technical support and guidance to junior engineers and other team members
* Stay up-to-date with the latest developments in Active Directory, Entra , and related technologies.
*
* Qualifications:
*** Bachelor's degree in Computer Science, Information Technology, or a related field.
* Minimum of 5 years of experience in managing and maintaining Active Directory infrastructure.
* Strong knowledge of Entra related technologies.
* Experience with security best practices and policies for directory services.
* Excellent problem-solving and troubleshooting skills.
* Strong communication and collaboration skills.
* Relevant certifications (e.g., Microsoft Certified: Identity and Access Administrator Associate) are a plus.
Preferred
Skills:
* Experience with hybrid environments integrating on-premises Active Directory with cloud-based directory services.
* Knowledge of scripting and automation tools (e.g., Power Shell).
* Experience with domain migrations and domain consolidation.
* Familiarity with other identity and access management solutions such as Microsoft Identity Manager.
* ** Knowledge of Public Key Infrastructure (PKI).**
* ** Basic network troubleshooting skills.**
* ** Advanced Excel skills.**
* ** Optional skills in Google Sec Ops, Windows Server Update Services, PRTG monitoring.**
* ** Advanced knowledge working with Microsoft Windows Server Operating System across physical and virtual environments.
**** TAKING CARE OF YOU
*** Career development and promotional…
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