Senior Network Security Engineer

Posting Date 06/30/26 Application Deadline 07/09/26 Pay Range $97,250 - $142,500 annually Salary offers are based on the candidate's equivalent experience and internal equity with other employees within the same job classification. This position is not eligible for overtime compensation. Job Type Unclassified Department Enterprise Technology About the Position As a Senior Network Security Engineer, you will provide expert-level engineering and operational support for the organization’s enterprise network and security infrastructure. You will play a lead role in the planning, design, implementation, and ongoing maintenance of secure network solutions across campus, data center, remote offices, cloud environments, and third-party connectivity. This includes core services such as firewall management, networking, VPNs, directory services, identity management, PKI, Web Application Firewalls (WAF), and virtual networks. In this role, you will focus on implementing and optimizing secure connectivity and access solutions, assisting with the deployment of Zero Trust Network Access (ZTNA), and managing firewall policies, VPNs, and segmentation strategies. You will collaborate with cross-functional teams to deliver secure, resilient, and high-performing network services that meet business and regulatory requirements. As a senior engineer, you will also mentor junior staff and ensure adherence to security best practices and operational standards. About Us Are you looking for a career in a dynamic organization that embraces a can-do spirit? Look no further than Maricopa County’s Office of Enterprise Technology! We are a team that prides ourselves on leveraging technology to create digital transformations. We look for ways to bring about innovative solutions while providing top-notch customer service. Apply today and become part of the team that makes a lasting impact on the future of technology at Maricopa County. Proud to Offer Work with a greater purpose Tuition reimbursement Exceptional work-life balance, with hybrid and alternative work schedule options Opportunities for growth and development within Maricopa County Low-cost, high-value healthcare for you and your qualifying dependents Child care benefits, including access to our on-site center, Maricopa County Kids Club, dedicated to serving Maricopa County families Paid vacation, sick time, and parental leave Extensive wellness program, including an incentive Enrollment in the Arizona State Retirement System, a defined retirement benefit requiring a 12% monthly contribution rate that includes a 100% employer match on Day 1 Want to learn more about the County’s Qualifying and Compensation Philosophy? Follow this link to learn more! Work With Us | Maricopa County, AZ We Require Five years of progressively responsible experience in network operations and engineering within enterprise or large-scale environments Bachelor's degree in Computer Science, Information Technology, or a closely related field A combination of post-secondary education and/or job-related experience may substitute for the minimum qualifications on a year-for-year basis. Other Requirements Successful candidates must currently possess, or have the ability to obtain, a valid Arizona Driver's license by the time of hire We Also Value Okta Certified Professional / Okta Certified Administrator Cisco Certified Network Professional (CCNP) Enterprise or higher Palo Alto Networks Certified Network Security Engineer (PCNSE) Certified Information Systems Security Professional (CISSP) Experience in designing, implementing, and managing enterprise network infrastructure, including on-premises, cloud, and hybrid solutions Experience with enterprise LAN/WAN architecture and wireless networking, including planning, deployment, and troubleshooting across campus and remote locations Experience deploying and configuring Multi-Factor Authentication (MFA) policies using tools such as Microsoft Entra ID, Okta, or Duo to enhance access security Experience supporting the design and troubleshooting of Single Sign-On (SSO) integrations using SAML, OIDC, and OAuth protocols across enterprise applications Experience configuring, managing, and troubleshoting Next-Generation Firewalls (NGFW)—such as Palo Alto Networks —including security policies, application control, threat prevention, URL filtering, and VPN services Experience implementing and supporting VPN solutions, including site-to-site and remote access configurations, with a focus on performance and security Proficiency in network automation and scripting (e.g., Python, Ansible, or REST APIs) to streamline configuration management and operational tasks Job Contributions Design, architect, and govern enterprise network security frameworks and secure connectivity models, establishing standards for firewall policy design, segmentation architecture, and secure access across on-premises, cloud, and hybrid environments; ensure solutions align with enterprise risk tolerance, cybersecurity frameworks, and long-term infrastructure strategy Engineer and enforce identity-integrated network access controls, developing and implementing authentication and authorization models that align network infrastructure with IAM platforms (e.g., Okta, Microsoft Entra ID, Active Directory), enabling Zero Trust Network Access (ZTNA) and ensuring secure, policy-driven access across users, devices, and applications Lead and govern the enterprise firewall policy lifecycle, including the evaluation, risk-based approval, and continuous optimization of firewall rules and access controls; assess business needs against security risk, ensuring compliance with regulatory requirements and minimizing exposure to unauthorized access or lateral movement within the network Design and oversee SD-WAN architecture and advanced network segmentation strategies, ensuring secure and resilient connectivity across geographically dispersed environments while enforcing traffic isolation, performance optimization, and alignment with enterprise security and compliance requirements Design and oversee SD-WAN architecture and advanced network segmentation strategies, ensuring secure and resilient connectivity across geographically dispersed environments while enforcing traffic isolation, performance optimization, and alignment with enterprise security and compliance requirements Develop and implement advanced automation and orchestration solutions using scripting, APIs, and configuration management tools to enforce standardized configurations, reduce manual intervention, and ensure consistent application of security policies across complex network environments Develop, maintain, and govern comprehensive technical and architectural documentation, including network security standards, system designs, configurations, and procedures, ensuring alignment with audit requirements, operational continuity, and enterprise governance practice Establish and enforce domain registration and external DNS governance controls, including lifecycle management, security monitoring, and protection mechanisms to prevent unauthorized changes, domain hijacking, and exposure to external threat vectors Serve as the senior technical authority and escalation point for complex and high-risk network security issues, conducting deep technical analysis, guiding remediation efforts, and making informed decisions that directly impact enterprise security posture and operational continuity Collaborate with cross-functional technical teams and stakeholders to integrate secure network and access control solutions into new and existing systems, ensuring that architecture, implementations, and configurations align with enterprise standards, security frameworks, and business requirements Continuously assess and enhance the organization’s network security posture by evaluating emerging threats, technologies, and industry best practices, translating findings into strategic engineering improvements and actionable recommendations Support and lead technical components of audit, compliance, and regulatory initiatives (e.g., CJIS, HIPAA, NIST), including designing and validating controls, responding to audit findings, and ensuring network security architecture meets evolving compliance and governance expectations Working Conditions Exerting up to 10 lbs. occasionally or negligible weights frequently; sitting most of the time Position is typically office or administrative work and is not substantially exposed to adverse environmental conditions Selection Procedure Consideration will only be given to candidates who submit online applications Candidates will be contacted primarily through email and their Workday online application profile Must pass a pre-employment background and/or fingerprint investigation as required by statute or policy, including drug and alcohol testing requirements for positions designated as safety-sensitive Maricopa County is an equal opportunity employer and is committed to providing equal employment opportunities to all applicants. If you require a reasonable accommodation during the application process or to perform the essential functions of the position under the Americans with Disabilities Act (ADA), please contact View email address on click.appcast.io to initiate the interactive process. Apply Now! We are Maricopa County. Who is that, you may ask? Forbes has rated Maricopa County one of Arizona’s Best Employers in 2024. We are over 13,000 employees strong, providing vital services for one of the fastest-growing counties in the nation, with over four million residents who call Maricopa County home. You may wonder what we do, and it may be easier to answer that by asking what are you interested in! Join us and you will become part of a dynamic group of diverse and talented professionals who are passionate about making a difference and giving back to their communities. We offer career paths and opportunities in just about every job category and job level imaginable, so your journey with us is what you make of it! Along with offering purposeful careers, you can expect a rich selection of economical and comprehensive healthcare options, robust retirement plans, tuition and loan payment programs, and multiple paid leave options, as part of an overall generous compensation and benefits package. Thinking about career options, then please think about us! We are Maricopa County, and we are looking forward to working with you!