jobapplier

NetScaler Engineer

Coretek Services

The NetScaler Engineer owns the design, operation, and security of the Citrix NetScaler (formerly Citrix ADC) environment, with a primary focus on the NetScaler Gateway (Citrix Access Gateway) platform that gives employees and partners secure remote access to Citrix Virtual Apps and Desktops.

About Coretek Services

Coretek Services · Kondapur, India (Hybrid) · Contract · Posted 2026-10-28

Responsibilities

  • The role keeps remote access available, fast, and secure; resolves complex connectivity and authentication issues; and leads upgrades, patching, and improvements across the gateway estate.
  • Administer, configure, and maintain NetScaler Gateway virtual servers for ICA proxy access to Citrix Virtual Apps and Desktops and Citrix Workspace.
  • Integrate gateways with StoreFront and/or Citrix Cloud (Workspace), including session policies, profiles, callback URLs, and Secure Ticket Authority (STA) configuration.
  • Build and support authentication flows using nFactor, LDAP/LDAPS, RADIUS, SAML, and multi-factor authentication providers such as Microsoft Entra ID, Okta, Duo, or RSA.
  • Configure and troubleshoot Endpoint Analysis (EPA) scans, SmartAccess and SmartControl policies, and client certificate authentication.
  • Serve as the escalation point for remote access incidents, including login failures, STA errors, session drops, HDX/EDT performance, and reconnect problems.
  • Support HDX optimization through the gateway, including EDT (UDP/DTLS), Session Reliability, and audio/video for Microsoft Teams and softphone traffic.
  • Manage NetScaler BLX, CPX, VPX, MPX, and/or SDX appliances in high-availability pairs and clusters, including GSLB across data centers.
  • Plan and execute firmware upgrades and emergency security patching, tracking vendor security bulletins and CVEs and applying fixes within defined SLAs.
  • Manage SSL/TLS certificates, cipher groups, and SSL profiles; track renewals to prevent certificate-related gateway outages.
  • Configure load balancing, content switching, responder, and rewrite policies for StoreFront, Director, and other internal services.
  • Use NetScaler Console (formerly ADM), logs, and packet traces such as nstrace and Wireshark for monitoring, analytics, and root-cause analysis.
  • Automate configuration and routine tasks with the NITRO API, PowerShell, Python, or Ansible/Terraform where practical.
  • Migrate NetScalers from VMware ESXi clusters to Oracle OCI clusters.
  • Harden gateway configurations against current security baselines and support vulnerability scans, penetration tests, and audits.
  • Follow change-management processes for all production changes, including test plans, rollback steps, and post-change validation.
  • Maintain current architecture diagrams, runbooks, configuration standards, and disaster recovery procedures.
  • Work with Citrix/VDI, Active Directory, identity, firewall, network, and service desk teams, and with vendor support on escalated cases.

Requirements

  • 5+ years of Hands-on experience deploying and troubleshooting NetScaler Gateway for Citrix Virtual Apps and Desktops (XenApp/XenDesktop) and StoreFront.
  • Strong understanding of TCP/IP, DNS, SSL/TLS, PKI, HTTP, and load-balancing concepts.
  • Experience with directory and identity integration, including Active Directory, LDAP, RADIUS, SAML, and MFA providers.
  • Proficiency with packet-capture analysis and structured troubleshooting of authentication and connectivity issues.
  • Experience with high-availability pair operations, firmware upgrades, and certificate lifecycle management.
  • Clear written and verbal communication skills, including the ability to explain technical issues to non-technical users.
  • Ability to overlap 5 hours with US Central time zone hours

Preferred

  • Current NetScaler or Citrix networking certification, such as Citrix Certified Associate or Professional – Networking.
  • Understanding of virtualization platforms such as VMware ESXi and Oracle OCI
  • Experience with Citrix Cloud, Gateway Service, Cloud Connectors, and hybrid Citrix deployments.
  • Experience with NetScaler Console (ADM), GSLB, and Web App Firewall (WAF).
  • Scripting and automation experience with the NITRO API, PowerShell, Python, Ansible, or Terraform.
  • Exposure to Zero Trust or ZTNA alternatives, such as Citrix Secure Private Access, and cloud platforms such as Azure or AWS.
  • Experience in a regulated environment, such as healthcare (HIPAA) or finance.

Apply

[Apply at Coretek Services](https://apply.workable.com/coretek-services/j/B469F0945C/apply)