We are seeking a highly skilled and experienced Systems Administrator to join our dynamic team. The ideal candidate will possess a deep understanding of multi-cloud environments (AWS and Azure), Active Directory, robust IP networking principles, a strong commitment to security best practices, excellent customer service skills, and the ability to mentor others in the IT department. You will be responsible for the design, implementation, and maintenance of our critical infrastructure, ensuring its reliability, security, and scalability. This is an on-site position that also requires participation in an on-call rotation and availability during scheduled maintenance windows.

Responsibilities:

• Active Directory Management:

• Maintain Active Directory Domain Services (AD DS) environments.

• Manage Group Policy, AD replication, and site management.

• Perform user and computer account management, including complex permission structures.

• Implement and maintain AD security hardening.

• Troubleshoot AD issues.

• AWS Administration:

• Design, implement, and manage AWS environments using core services (EC2, S3, VPC, IAM, and RDS).

• Implement AWS security best practices and monitor AWS resources using CloudWatch.

• Manage AWS cost optimization.

• Azure/Entra ID Administration:

• Manage Azure environments using core services (Virtual Machines, Virtual Networks, Azure Storage, Azure Monitor).

• Manage Entra ID (Azure AD), including user and group management, application registrations, and conditional access policies.

• Implement and maintain Entra ID Connect for on-premises Active Directory synchronization.

• Implement Azure security best practices.

• IP Networking:

• Manage and troubleshoot TCP/IP networking, including subnetting, routing, and network protocols (DNS, DHCP, HTTP/HTTPS, SSH).

• Analyze network traffic and diagnose network issues.

• Manage hybrid network connections.

• Security:

• Implement and maintain computer and systems security best practices.

• Perform vulnerability management and patch management.

• Utilize security monitoring tools (SIEM, IDS/IPS).

• Respond to security incidents and perform malware analysis.

• Implement security auditing and compliance.

• Implement and maintain least privilege access.

• Customer Service:

• Provide prompt and professional technical support to end users.

• Clearly communicate technical information to non-technical users.

• Resolve user issues efficiently and effectively.

• Maintain a positive and helpful attitude.

• Mentorship:

• Mentor junior team members on technical skills and best practices.

• Provide guidance and support for career development.

• Share knowledge and expertise with the team.

• Maintenance Windows:

• Attend scheduled maintenance windows every other month on the third Saturday.

• On-Call Rotation:

• Participate in an on-call rotation to provide 24/7 support for critical systems.

Qualifications:

• Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent experience).

• Minimum of 5+ years of experience in systems administration.

• Expertise in Active Directory Domain Services (AD DS).

• Proficiency in AWS and Azure cloud platforms.

• Strong knowledge of Entra ID (Azure AD) and hybrid identity management.

• Deep understanding of TCP/IP networking, network protocols, and ports.

• Strong skills in computer and systems security best practices.

• Experience with scripting languages (PowerShell, Bash, Python).

• Excellent troubleshooting and problem-solving skills.

• Strong communication and teamwork skills.

• Relevant certifications (e.g., Microsoft Certified: Windows Server Hybrid Administrator Associate, AWS Certified SysOps Administrator – Associate, Azure Administrator Associate, CompTIA Security+, CISSP) are highly desirable.

Preferred Qualifications:

• Experience with automation tools (Ansible, Chef).

• Experience with security frameworks (NIST, ISO 27001).

Clark Construction Group is one of the largest building and infrastructure companies in the United States.

Our portfolio spans every major building market, from public to private, corporate to cultural, education to entertainment, and the infrastructure connecting it all – power, transportation, water, and roadways. Since 1906, we’ve been delighting and delivering value to our clients and project partners, providing diverse opportunities for our team, and strengthening the communities where we live.

With offices strategically located across the country, we pride ourselves on being a local builder with national reach.

Learn more about Clark Construction (https://www.clarkconstruction.com/) .

There is a sense of camaraderie that comes with delivering impactful projects as a team. It creates a sense of humility and fosters pride in the work we do. At Clark, we are proud to build what matters, together.

Learn more about careers at Clark (https://www.clarkconstruction.com/careers) .

Find even more opportunities with the Clark Group, our collection of companies – delivering construction and asset solutions for clients across the United States.

Clark Group's capabilities span the entire asset lifecycle – from project development and financing to construction and facility maintenance.

Asset Solutions

Altura Associates (https://clark.wd5.myworkdayjobs.com/Altura)

Coda

Edgemoor Infrastructure & Real Estate (https://clark.wd5.myworkdayjobs.com/Edgemoor/)

S2N Technology Group

Building & Infrastructure

Atkinson Construction (https://clark.wd5.myworkdayjobs.com/Atkinson)

Shirley Contracting Company

C3M Power Systems (https://clark.wd5.myworkdayjobs.com/C3MExternal)

Equal Opportunity Employer

Clark Construction Group, LLC (and its subsidiaries and affiliates) is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, age, national origin, religion, physical and mental disability, genetic information, marital status, sexual orientation, gender identity, citizenship, pregnancy or maternity, protected veteran status, or any other status prohibited by applicable national, federal, state or local law. Clark promotes a drug-free workplace. 

Applicants have rights under Federal Employment Laws: Family and Medical Leave Act (FMLA), Equal Employment Opportunity (EEO), and Employee Polygraph Protection Act (EPPA).

Clark is committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please email  leaveofabsence@clarkconstruction.com  or call (800) 655-1330 and let us know the nature of your request and your contact information.

Authorization to Work

Applicants must be currently authorized to work in the US on a full-time basis in order to be considered.

Equal Opportunity Employer:

Clark Construction Group, LLC, (subsidiaries and affiliates) is an Equal Opportunity Employer committed to diversity and inclusion in the workplace. All qualified applicants will receive consideration for employment without regard to sex, race, color, age, national origin, religion, physical and mental disability, genetic information, marital status, sexual orientation, gender identity/assignment, citizenship, pregnancy or maternity, protected veteran status, or any other status prohibited by applicable national, federal, state or local law. Clark Construction promotes a drug-free workplace.