Remote Senior Network Engineer - Zscaler & ZTNA Expert in Katowice

Job Description – Senior Network Engineer (Zscaler Specialist)

Location:

Remote / India Experience:

5+ Years Employment Type:

Full-Time Role Summary

We are seeking an experienced

Senior Network Engineer

with deep expertise in

Zscaler Internet Access (ZIA) ,

Zscaler Private Access (ZPA) , and enterprise network infrastructure. The ideal candidate will possess strong hands-on experience in designing, implementing, administering, and troubleshooting secure network environments utilizing Zscaler's Zero Trust architecture.

The role requires extensive experience in enterprise networking, network security, cloud-delivered security platforms, SD-WAN integrations, and secure remote access solutions.

Key Responsibilities

Zscaler Administration & Engineering

Design, deploy, configure, and support

Zscaler Internet Access (ZIA)

and

Zscaler Private Access (ZPA)

environments.

Manage Zscaler policies, forwarding profiles, authentication mechanisms, SSL inspection, URL filtering, firewall policies, and data protection controls.

Configure and maintain:

Service Edges

Client Connectors

Access Policies

Implement and administer Zero Trust Network Access (ZTNA) solutions across global enterprise environments.

Troubleshoot complex ZIA and ZPA connectivity, authentication, and application access issues.

Manage integration with Identity Providers such as:

Okta

Ping Identity

Active Directory

Perform application onboarding and migration from traditional VPN solutions to ZPA.

Configure Cloud Firewall, Sandbox, DLP, CASB, and Advanced Threat Protection features within Zscaler.

Develop and maintain operational documentation, runbooks, deployment guides, and architecture diagrams.

Network Operations & Infrastructure

Administer enterprise-level LAN, WAN, Wireless, Internet Edge, and Data Center networks.

Configure and troubleshoot:

Cisco Routers & Switches

Aruba Wireless Controllers

Fortinet Firewalls

SD-WAN Solutions

Design resilient and highly available network architectures.

Support network expansion, refresh projects, and infrastructure upgrades.

Serve as L2/L3 escalation point for critical network and Zscaler incidents.

Perform root cause analysis (RCA) and provide permanent resolutions.

Troubleshoot:

VPN Connectivity

DNS Issues

Application Access Problems

Routing & Switching Issues

Participate in on-call support and major incident management processes.

Monitoring & Reporting

Monitor network availability and performance utilizing enterprise monitoring tools.

Generate operational reports covering:

Network Health

Capacity Planning

Security Events

Proactively identify performance bottlenecks and recommend improvements.

Required Technical Skills

Expert-level hands-on experience with:

Zscaler Internet Access (ZIA)

Fully Qualified Domain Name (FQDN)

Zscaler Private Access (ZPA)

Zscaler Digital Experience (ZDX)

Advanced Threat Protection

CASB

Networking

Strong expertise in:

TCP/IP

DNS

DHCP

NAT

VPN

IPSEC

BGP

OSPF

VLANs

STP

QoS

Wireless Networking

Security

Firewall Configuration & Administration

Zero Trust Architecture

Secure Web Gateway (SWG)

Proxy Technologies

Identity & Access Management

SSL/TLS Technologies

Network Access Control (NAC)

AWS

ExpressRoute

Site-to-Site VPN

SD-WAN Integration with Zscaler

Required Experience

Minimum

5+ years of experience

in Enterprise Network Engineering.

Minimum

3+ years of hands-on experience with Zscaler ZIA and ZPA .

Experience supporting global enterprise environments with 1,000+ users.

Proven experience in network transformation and VPN-to-ZTNA migrations.

Experience working within ITIL-based support models.

Educational Qualifications

Bachelor's Degree in Computer Science, Information Technology, Networking, or related discipline.

Mandatory Certifications

Candidates should possess one or more of the following certifications:

Zscaler Certifications (Highly Preferred)