Senior System Administrator
Penhall
Senior System Administrator
Position Description
The Senior Systems Administrator will serve as a critical member of Penhall's IT team, responsible for maintaining and enhancing the companys IT infrastructure, both on-premises and in the cloud. This role will focus on ensuring high system availability, top-tier support, and adherence to IT best practices while delivering efficient and scalable solutions. The position requires expertise in system administration, cybersecurity, and process automation, with the ability to manage multiple priorities in a fast-paced environment.
Duties and Responsibilities:
- Manage and administer on-premises and cloud-based IT infrastructure, including networking, servers, Active Directory, Azure, Microsoft 365, Track IT, and cybersecurity programs.
- Serve as the highest escalation point for IT-related challenges, engaging with vendors and troubleshooting complex issues.
- Design, implement, and optimize systems maintenance plans, including system performance monitoring, patching, and disaster recovery testing, with a focus on automation and improvement opportunities.
- Champion cybersecurity best practices, including multi-factor authentication (MFA), least-privilege access, conditional access, and secure system configurations.
- Lead efforts to replace or upgrade existing systems and align IT infrastructure with business goals.
- Maintain and document IT processes, policies, and systems configurations (e.g., network diagrams, patch management, disaster recovery, security measures).
- Configure and manage firewalls, switches, wireless access points, VPNs, and other networking devices.
- Monitor, analyze, and act on system and security alerts, including those from Proofpoint and CrowdStrike platforms.
- Deploy and manage backup and recovery solutions, ensuring data integrity and business continuity.
- Create, maintain, and optimize PowerShell scripts and other automation tools to streamline repetitive IT tasks.
- Conduct regular network audits and implement corrective measures as needed.
- Manage and implement endpoint configuration tools, such as Automox, to ensure systems are secure and compliant.
- Provide exceptional customer support to internal stakeholders and assist in resolving IT-related issues in a timely manner.
- Author and maintain technical documentation using tools such as Microsoft Visio, Word, and PowerPoint.
- Stay informed of emerging IT trends and technologies and recommend relevant solutions for Penhalls needs.
- Provide training, guidance, and mentorship to junior team members and support staff.
- Perform other related duties as assigned by the manager.
Position Requirements
Required Skills and Abilities:
- Proficiency in Microsoft 365 ecosystem, including Exchange Online, Teams, SharePoint, and OneDrive.
- In-depth knowledge of Azure AD, including SSO, conditional access, synchronization methods, and group policy management.
- Expertise in cybersecurity measures, including endpoint protection, encryption, intrusion detection, and secure configurations.
- Strong experience with cloud platforms, particularly Azure, and performing premise-to-cloud migrations.
- Advanced skills in PowerShell scripting and other automation tools.
- Proficiency in managing virtualization platforms such as VMware or Azure.
- Networking expertise, including DHCP, DNS, VLANs, and troubleshooting using packet capture tools.
- Familiarity with enterprise backup solutions like Veeam and storage systems, including SAN and iSCSI technologies.
- Strong written and verbal communication skills, with the ability to convey technical information to non-technical stakeholders.
Essential Core Competencies:
- Problem Solving: Ability to efficiently diagnose and resolve technical issues.
- Critical Thinking: Anticipates potential IT challenges and develops proactive solutions.
- Attention to Detail: Ensures accuracy in configurations, updates, and documentation.
- Communication Skills: Clearly explains technical concepts to stakeholders and creates comprehensive documentation.
- Team Collaboration: Works effectively with IT, development, and operations teams to achieve infrastructure goals.
- Customer Service Orientation: Delivers timely and effective support to end-users and stakeholders.
- Adaptability: Responds to evolving technologies and organizational priorities with flexibility.
Education and Experience:
- Bachelors degree in Computer Information Systems or a related field, or equivalent experience and certifications.
- Minimum of 5+ years of systems administration experience in an enterprise environment.
- Certifications such as Microsoft 365 or MCSE are preferred.
Physical Requirements:
- Prolonged periods of sitting at a desk and working on a computer.
- Must be able to lift up to 15 pounds at times.
- Ability to walk job sites when necessary.
- May be required to travel to job sites and other locations.
Equal Opportunity Employer
Legal Disclaimer:
Reasonable accommodations may be made to enable individuals with disabilities to perform the essential
functions of the job.
Penhall Company is an Equal Opportunity Employer and does not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, compensation inquiries, discussions or disclosures, gender identity and/or expression, status as a veteran, and basis of disability or any other federal, state or local protected class. (41 CFR 60-1.4(a), 60-300.5(a) and 60-741.5(a))
This job description is intended to describe the general nature and level of work being performed by employees in this position. It is not intended to be an exhaustive list of all duties, responsibilities, or qualifications required. Penhall Company reserves the right to modify, add, or remove duties and to assign other responsibilities as necessary.
AI-Assisted Hiring and Automated Decision Tool Disclosure
The Company may use Artificial Intelligence (AI), machine learning technologies, and/or automated decision-making tools to assist in certain aspects of the recruitment and hiring process, including reviewing applications, resumes, assessments, and candidate qualifications. These tools are used to support the evaluation process and are not used as the sole basis for employment decisions.
All employment decisions are ultimately made by qualified Company representatives. The Company maintains human oversight of hiring decisions and does not permit automated systems to make final employment determinations independently.
The Company is committed to equal employment opportunity and to complying with all applicable federal, state, and local employment, privacy, and anti-discrimination laws. The Company does not intentionally use AI systems in a manner that unlawfully discriminates against applicants or employees based on any protected characteristic under applicable law.
Applicants may request reasonable accommodations, alternative evaluation methods, or additional information regarding the Companys use of automated tools by contacting Human Resources.
Where required by applicable law, the Company may provide additional notices regarding the use of automated decision-making tools, data practices, retention periods, or bias audit information.
PI7ba0aaac8667-26289-41524566
$133.5k - $190.05k
...National Laboratory this summer, with initial customer deliveries beginning in 2028.About the Role:Radiant is seeking a Senior Systems Administrator to own the systems that keep the company running day-to-day within Microsoft 365 GCC High. You'll own the tenant, build...SeniorFull timeWork experience placementSummer workWork at officeImmediate startRemote workFlexible hoursWeekend work- ...Sr. IT Systems Administrator, IT ApplicationsHawthorne, CASpaceX was founded under the belief that a future where humanity is out exploring the... ...with the ultimate goal of enabling human life on Mars.As a Senior IT Systems Administrator, you will serve as a key technical...SeniorPermanent employmentTemporary work
$65k - $97.5k
...you to join our team to Bring the Future! Job Purpose The HR Systems (HRS) team is responsible for the configuration, operation, and support of key HR applications. The Business Systems Administrator supports the implementation, configuration, integration, and...SeniorFull timeTemporary workWork experience placementRemote workRelocation package- ...Senior System AdministratorThe Senior System Administrator's role is to administer Pipeline Health's computer systems to ensure high levels of availability and security of the supported business applications. This individual participates in the planning and implementation...SeniorLocal area
$165k - $231k
...Senior Embedded Linux Engineer Torrance, California, United States Neros is a defense technology company rebuilding America's... ...industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built...SeniorWork experience placement- ...Partner Engineering and Science, Inc is seeking a Senior IT System Administrator to support, secure, and improve its Microsoft-centered environment. The role requires hands-on experience with Microsoft 365, Teams, networking, security, and server infrastructure. SharePoint...
- ...Pelco System AdministratorWe are seeking an experienced and detail-oriented Pelco System Administrator to oversee, manage, and ensure the optimal and secure operation of our Pelco video security systems. The successful candidate will have hands-on experience with Pelco...For contractorsLocal area
$75.8k - $144.2k
...IT Systems AdministrationAt RTX, the world's largest aerospace and defense company, 185... ...defense.What You Will Do:Provide IT systems administration in a heterogeneous Microsoft Windows and... ...systems.Execute actions as directed by senior staff and project management.Engage in...Full timeTemporary workWork experience placementFlexible hours- ...System AdministratorCambium is a global company building the advanced materials base for reindustrialization — from AI-driven molecular... ...aerospace, and beyond.We're looking for an experienced System Administrator to manage, secure, and optimize our Microsoft 365 environment...Full time
- A leading managed service provider is seeking a Service Desk Specialist to provide technical expertise and ensure client satisfaction. The role requires 4+ years of IT experience, excellent problem-solving skills, and knowledge of Microsoft technologies. You will support...Remote work
- ...Radiant is seeking a Senior Systems Administrator to own day-to-day systems within Microsoft 365 GCC High at its El Segundo HQ. You’ll craft identity and access automation, manage endpoint and email security, and support the CMMC controls as part of normal duties. You...
- ...Job Description Job Description The Role: Systems Administrator The Location: SB, LA, OC, SD, California Make a Difference Where It Matters Most At CalPrivate Bank, we believe banking is personal. We have deep roots in the communities we serve, and our...
$80k - $100k
...primary payloads attached to the bus -- and unlock a 'one-to-many' system, where each satellite has a large number of payloads which can... ...Kinetic is seeking a mid-level Infrastructure & Systems Administrator to maintain and scale the infrastructure supporting our engineering...Permanent employmentFlexible hours$145.1k - $269.5k
...us, ensuring security and prosperity.Join us in shaping a new era in space and find a career that's built for you.As an ESS SATCOM Systems Integration, systems engineering SME, you will:Act as a customer interface, foster customer relationship and interpret customer feedback...SeniorFull timeTemporary workWork experience placementCasual workFlexible hours$112k - $167.9k
...up to 20% Career Level: 6 Job Grade: Exempt-IC1 Salary Range: $112,000.00 - $167,900.00 Job Purpose Serve as the senior individual-contributor CPA and technical accounting subject matter expert for North America consolidation and financial reporting,...SeniorFull timeTemporary workWork experience placementRemote workRelocation packageShift work$183.5k - $208k
...security. Epirus' flagship product, Leonidas, is a software-defined system built using intelligent power management techniques which allow... ...exciting role in a growing company. The ideal candidate for the Senior Principal Electronics Process Engineering position is someone...SeniorPermanent employmentWork at officeWeekend work- ...MANTECH seeks a motivated, career, and customer-oriented Network System Administrator (NSA) - I to join our team in El Segundo, CA . You will provide day-to-day support for Collateral, Sensitive Compartmented Information (SCI), and Special Access Program (SAP)...Full timeWork at officeLocal area
- The Ring and Blink CS Technology Enablement team is seeking a Systems Engineer to support the AI-driven platforms powering next-... ...AI-driven solutions for document management, reporting, and administrative tasks· Stay current on emerging AI capabilities and recommend...Local area
$76.46k - $131.24k
...refineries and related facilities. We are seeking a talented Server Administrator to join our team as a pivotal member that would play a key... ...of physical and virtual server environments, storage systems, backup solutions, and disaster recovery capabilities. The administrator...Work experience placement- ...Sr. Windows Systems AdministratorSr. Windows Systems Administrator with experience in systems administration, networking, system virtualization, cloud computing, backups, Linux OS, mac OS, Windows OS, network storage, load balancer, and associated hardware platforms to...Work experience placementRemote work
- ...Senior Principal Optical Payload Systems EngineerRELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: SCI TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities...SeniorFor subcontractorRemote workRelocation package
$32.5 - $36 per hour
Job Description Overview\n Intuit is seeking highly motivated individuals to join our dynamic team as dedicated year-round TurboTax Retail Experts in one of our TurboTax Retail or Flagship locations across the United States. This unique opportunity combines tax expertise...SeniorLocal area- ...Senior Database Administrator (DBA)Koniag IT Systems, LLC, a Koniag Government Services company, is seeking a Senior DBA to support KITS and our government customer in Carson, CA. This position is for a Future New Business Opportunity. The customer may need support as...SeniorContract workLocal areaFlexible hours
- ...Description:Looking for highly skilled Onprem Cloud Era/Big Data Administrator to manage big data platform:RolesHandle day-to-day operations;... ...and compliance• Document processes and policies for Hadoop System Administration & Platform support activities• Work with end users...1 day per week
$75k - $95k
...primary payloads attached to the bus -- and unlock a 'one-to-many' system, where each satellite has a large number of payloads which can... ...we do in space. What You'll Do: The System Administrator w ill handle the day-to-day operation, maintenance, and support...Permanent employmentFlexible hours$135.1k - $168.9k
...maintain high-performance kernel drivers and customize Device Trees to support proprietary hardware peripherals. Yocto & Build System Leadership Architect modular, scalable Yocto/OpenEmbedded layers that support multiple hardware variants from a single codebase...SeniorFull timeContract workPart timeLocal area$114k - $171k
...TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us...SeniorFull timeRelocation packageMonday to ThursdayShift work$28 - $32.2 per hour
...Network Administrator II Gardena, CA 90249 Overview Salary Range $28.00 - $32.20 Hourly Level Experienced Position Type Full Time... ..., Skype for Business, firewalls and any related software. The system is based on Microsoft technology, including on-premises Exchange...Hourly payFull timeWork experience placementWork at officeRemote workShift work$95.5k - $181.7k
...Principal System AdministratorsKnow your job match score, get recommended jobs and connect with recruiters looking for talent like... ...help shape the future of aerospace and defense. Principal System Administrators, based in El Segundo, CA, infrastructure Workplace Services,...Full timeTemporary workWork experience placementWork at officeRemote workRelocationFlexible hours$30.8 - $56.16 per hour
...Classified Windows System AdministratorThe Aerospace Corporation is the trusted partner to the nation's space programs, solving the... ...Join The Aerospace Corporation as a Classified Windows System Administrator (Systems Administration Specialist II/III) and play a pivotal...Full timeImmediate startRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior System Administrator. Be the first to apply!
- senior software engineer remote Lawndale, CA
- senior ux designer remote Lawndale, CA
- srs Lawndale, CA
- senior manager legal Lawndale, CA
- remote senior salesforce administrator Lawndale, CA
- senior financial analyst fp&a Lawndale, CA
- senior network engineer remote Lawndale, CA
- senior operations technician Lawndale, CA
- senior devops engineer remote Lawndale, CA
- senior accountant remote Lawndale, CA





