Engineer - Network Data & NetScaler

Responsibilities

• Manage and optimise NetScaler ADC platforms (L4-L7 load balancing, SSL offload, GSLB, HA pairs): configure VIPs, services, and health monitors to the highest availability standards.
• Onboard applications to the ADC using standard patterns; validate persistence, health probes, and SSL handshake behaviour post-change.
• Manage SSL offload, cipher suite hardening, and certificate bindings across ADC services; align with organisational TLS standards and renew certificates on schedule.
• Validate HA failover behaviour during maintenance windows; keep configuration backups and golden templates current for rapid recovery.
• Coordinate with WAF, CDN, and Proxy teams on fronting, routing, and policy changes that affect ADC traffic flows.
• Track firmware advisories for NetScaler appliances; schedule, execute, and verify upgrades with same-day rollback capability.
• Align ADC configuration with security baselines and audit requirements; participate in data centre and office move cutovers.
• Manage and improve Infoblox DDI: zone architecture, DHCP scope management, IPAM hygiene, and large-scale scripted changes.
• Validate DNS zone changes and replication across the Infoblox grid; troubleshoot propagation, caching, and resolution performance.
• Operate split-horizon views, conditional forwarders, and DNSSEC where required; maintain naming standards and zone delegation documentation.
• Coordinate with certificate teams for DNS-based validations and ownership proofs; validate DNS impacts for WAF, DDoS, ADC, and CDN cutovers and failbacks.
• Review and clean stale DNS records; ensure CMDB/IPAM alignment; produce capacity and usage reports (zones, records, growth).
• Configure, maintain, and troubleshoot routing between network segments (OSPF, BGP, EIGRP); optimise routing policies for performance and resilience.
• Design, implement, and operate software-defined networking (SDN) solutions: manage network virtualisation overlays, policy-based routing, and SDN controller integration to support cloud workloads and hybrid connectivity.
• Drive network segmentation initiatives to achieve a Zero Trust Network (ZTN) environment: design and implement ACL strategy, micro-segmentation boundaries, and SASE-aligned controls for secure access across cloud, on-premises, and remote users.
• Administer and maintain enterprise firewalls, VPN gateways, IPS, and IDS: manage rule bases, policy reviews, threat signatures, and alert triage; Palo Alto and Fortinet platform experience is strongly preferred.
• Support onboarding and configuration of network devices following engineering standards and architecture patterns.
• Provide L3 support for network transport, routing, DNS, load balancing, NAC, and network automation incidents; escalate high-impact outages per the escalation matrix.
• Monitor network infrastructure components (routers, switches, DNS/DHCP/IPAM, NetScaler); respond to threshold breaches and perform first-line remediation.
• Execute routine network maintenance: firmware updates, configuration adjustments, device health checks, and routi

Benefits

Additional Information

REGENT LP Regent is a global private holding company focused on investing in and transforming businesses across a broad spectrum of industries including automotive, technology, consumer products, retail, industrial, and media. Known for driving innovation and operational excellence, Regent partners with management teams to unlock long-term value. ROLE OVERVIEW We are seeking an experienced Engineer to support the Network Data & NetScaler area. This role has accountability for the reliability, security, and continuous improvement of the organisation's application delivery infrastructure (Citrix NetScaler/ADC) and network data services (Infoblox DDI, routing, segmentation). The role spans L4-L7 load balancing and SSL offload, enterprise DNS/DHCP/IPAM, routing protocol management, software-defined networking (SDN), firewall and VPN operations, and the evolution toward a Zero Trust Network (ZTN) and SASE-aligned architecture - partnering with application, cloud, and security teams to deliver high-availability, secure network services.* *Please note this role is on-site 5 days per week AREA CONTEXT Network Data & Netscaler focuses on the management and optimisation of network services, including load balancing, DNS, network routing, network segmentation, and network automation. The area ensures high availability, scalability, and performance of business-critical applications by leveraging technologies such as Citrix NetScaler and Infoblox. It addresses operational challenges such as device lifecycle management, firmware upgrades, and the integration of new network services. The area also supports the transition to cloud-managed networking, the adoption of software-defined networking (SDN) principles for virtualisation and cloud integration, and alignment with Zero Trust Network (ZTN) and SASE frameworks - reflecting the security architecture already operating across the broader portfolio.

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