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Senior Systems Engineer Citrix NetScaler - Remote
Duration: Contract through February 2027 with potential for extension
Schedule: MondayFriday, Eastern Time Business Hours

ARC Group has an immediate opportunity for a Senior Systems Engineer with deep expertise in Citrix NetScaler ADC and enterprise application delivery infrastructure. This position is with a highly respected healthcare organization and offers the opportunity to work on mission-critical infrastructure supporting enterprise web applications and cloud modernization initiatives.

This position is 100% remote!

This is not a virtualization role. The team is responsible for enterprise load balancing, reverse proxy services, application delivery, and supporting cloud migration initiatives.

Please Note:

• Candidates must have permanent U.S. work authorization.
• No C2C, third-party, or sponsorship opportunities are available for this position.

Position Summary

As a Senior Systems Engineer, you will be responsible for the design, administration, monitoring, troubleshooting, and optimization of enterprise application delivery infrastructure. You will serve as a technical leader supporting Citrix NetScaler ADC, Fortinet FortiProxy, Microsoft IIS, cloud migrations, and automation initiatives while ensuring high availability, security, and performance across the enterprise.

Key Responsibilities

• Administer and support enterprise Citrix NetScaler ADC environments.
• Configure and troubleshoot Layer 4 and Layer 7 load balancing.
• Perform PCAP analysis and advanced network troubleshooting.
• Manage enterprise reverse proxy infrastructure supporting public-facing applications.
• Lead hardware refreshes, migrations, and infrastructure modernization projects.
• Support AWS cloud migration initiatives from an application delivery and load balancing perspective.
• Administer Fortinet FortiProxy or similar proxy technologies, including firmware upgrades and patch management.
• Support and maintain Microsoft IIS web server environments.
• Manage SSL certificates and application security.
• Develop automation using PowerShell and other scripting languages.
• Monitor system performance, troubleshoot complex issues, and implement proactive improvements.
• Collaborate with infrastructure, networking, security, and application teams.
• Participate in disaster recovery planning and 24x7 on-call support as needed.
• Ensure enterprise environments remain secure, compliant, and aligned with architectural standards.

Required Qualifications

• 7+ years administering Citrix NetScaler ADC, including:
  • Layer 4/Layer 7 routing
  • PCAP analysis
  • Hardware refreshes
  • Infrastructure migrations
• 3+ years supporting cloud migrations or cloud transformation initiatives (AWS preferred).
• 3+ years administering Fortinet FortiProxy or similar proxy platforms, including firmware upgrades and patching.
• 3+ years managing SSL certificates.
• Experience supporting Microsoft IIS web servers.
• Strong experience working in both Windows and Linux environments.
• Experience supporting vulnerability management and audit remediation.
• Strong scripting experience using PowerShell; Java, Python, or PHP experience is a plus.
• Experience implementing and supporting enterprise-scale application delivery infrastructure.
• Ability to participate in a 24x7 on-call rotation.
• Must be a U.S. Citizen or Green Card holder to qualify.

Preferred Qualifications

• Healthcare or other large enterprise environment experience.
• AWS Application Load Balancer (ALB) or cloud-native load balancing experience.
• Experience with enterprise automation and infrastructure modernization initiatives.
• Excellent troubleshooting, communication, and technical leadership skills.

Why This Opportunity?

• Join one of the nation's leading healthcare organizations.
• Work on large-scale enterprise infrastructure supporting mission-critical applications.
• Be part of cloud transformation and modernization initiatives.
• Long-term contract with strong potential for extension.
• Hybrid work environment offering flexibility and collaboration.
• Opportunity to work alongside highly experienced infrastructure engineering teams.

Would you like to learn more?

For immediate consideration, please send your resume directly to D.A. Longhi at dlonghi@arcgonline.com or apply online while viewing all of our current openings.

ARC Group is a Forbes-recognized recruiting and executive search firm partnering with leading organizations nationwide to identify exceptional technology and professional talent.

ARC Group is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status, age, or any other protected characteristic. Accommodations are available throughout the recruitment process upon request.

Position is offered with no fee to the candidate.