Systems: Network Reliability Engineer (58A0A94)

Referment; New York (NY); On-site; USD 140,000 - 190,000; Full time

Job summary

Referment is seeking a Network Reliability Engineer to own and improve a complex, cross-platform production environment across Linux, Windows, networks, and storage. You will focus on stability, automated change, and robust observability while working within a hands‑on infrastructure team.

This role targets senior engineers who can diagnose tough incidents, implement secure access via Zscaler and ISE, and push automation with Ansible and Python.

Qualifications

• 5+ years of hands-on experience operating production networks at scale with on-call duties.
• Strong knowledge of UDP, TCP/IP, BGP and OSPF, plus PIM/IGMP multicast.
• Extensive experience with Palo Alto, Fortinet and Cisco ASA firewalls.
• Proficient with Ansible for network automation and declarative configuration management.
• Experience writing automation in Python.
• Experience with Zero Trust and secure access (Zscaler ZIA/ZPA, Cisco ISE, FortiNAC).
• Familiar with observability tools (Splunk, SolarWinds, Zabbix).
• Technical degree or equivalent; CCNP or PCNSE desirable.
• Experience with cloud-native networking and hybrid connectivity (AWS VPC, Direct Connect, Azure Networking) is a plus.

Responsibilities

• Operate and engineer production network infrastructure with focus on stability, reliability and safe change.
• Diagnose unfamiliar, high-impact technical problems under pressure with high attention to detail.
• Administer network, monitoring and security platforms across a cross-platform environment, with a focus on Palo Alto, Fortinet and Cisco ASA.
• Develop automation using industry-standard frameworks to remove manual work, improve efficiency and manage configuration as code.
• Implement and maintain Zero Trust architecture and secure access solutions such as Zscaler (ZIA/ZPA), Cisco ISE or FortiNAC.
• Make network health measurable through effective metrics, monitoring and diagnostic tooling including Splunk, SolarWinds and Zabbix.
• Contribute to broader infrastructure engineering projects, including cloud-native networking and hybrid connectivity.

Skills

On-call experience

Networking fundamentals

Automation scripting

Education

Technical degree or equivalent experience

Tools

Ansible

Python

Palo Alto

Fortinet

Cisco ASA

Splunk

SolarWinds

Zabbix

Zscaler ZIA/ZPA

Job description

Referment is working with an investment and technology organisation seeking a Network Reliability Engineer for a hands‑on infrastructure engineering role.

You will join a cross‑platform systems team responsible for the reliability and continuing improvement of a complex production environment spanning Linux and Windows systems, business applications, high‑performance networks and storage infrastructure. The remit combines operational ownership with engineering projects: resolving difficult incidents, improving observability, automating repetitive work and making changes safely.

The Role

• Operate and engineer production network infrastructure with a focus on stability, reliability and safe change.
• Diagnose unfamiliar, high-impact technical problems under pressure with high attention to detail.
• Administer network, monitoring and security platforms across a cross-platform environment, with a focus on Palo Alto, Fortinet and Cisco ASA.
• Develop automation using industry-standard frameworks to remove manual work, improve efficiency and manage configuration as code.
• Implement and maintain Zero Trust architecture and secure access solutions such as Zscaler (ZIA/ZPA), Cisco ISE or FortiNAC.
• Make network health measurable through effective metrics, monitoring and diagnostic tooling including Splunk, SolarWinds and Zabbix.
• Contribute to broader infrastructure engineering projects, including cloud-native networking and hybrid connectivity.

What We’re Looking For

• At least five years of hands‑on experience operating and engineering production networks at scale, including on‑call responsibility.
• Strong fundamentals across UDP, TCP/IP, BGP and OSPF, with working knowledge of PIM and IGMP multicast technologies.
• Extensive hands‑on experience with modern enterprise firewall and security platforms, specifically Palo Alto, Fortinet and Cisco ASA.
• Proficiency in industry-standard network automation and declarative configuration management tools, specifically Ansible.
• Experience writing and maintaining automation, ideally using Python.
• Hands‑on experience with Zero Trust architecture and secure access solutions (e.g. Zscaler ZIA/ZPA, Cisco ISE, FortiNAC).
• Experience with standard network observability and monitoring suites such as Splunk, SolarWinds or Zabbix.
• A technical degree or equivalent professional experience.
• Relevant industry certifications such as CCNP or PCNSE are highly desirable.
• Experience with cloud-native networking and hybrid connectivity, such as AWS VPC, Direct Connect or Azure Networking, is a plus.

This could suit a senior network engineer, network automation engineer, network-focused site reliability engineer, or infrastructure engineer who has owned large production networks.

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