Senior Network Security Architect/Engineer

This role is critical to driving the organization’s network security posture and Zero Trust journey, while ensuring secure operations across corporate, cloud, and high-trust OT environments. The position requires both deep technical expertise and the ability to drive strategic security initiatives at scale.

Location : Remote

We are seeking a Senior Network Security Engineer/Architect with a strong security mindset and the ability to apply risk-based decision-making to drive the design, implementation, and operational management of enterprise network security controls. This role is responsible for securing hybrid environments across on-premises, cloud, and OT/PCN networks while advancing the organization's Zero Trust strategy.

The ideal candidate combines deep hands-on engineering expertise with architectural ownership and can lead complex initiatives, including M&A integrations, security platform modernization, and the protection of high-trust environments. This role requires the ability to evaluate not only how to implement security solutions, but also whether they should be implemented based on risk, business requirements, and long-term security impact.

Required Qualifications Experience 8+ years of experience in Network Security Engineering or Network Security Architecture.

Technical Expertise Strong hands-on experience with: Enterprise firewall platforms Zscaler (ZIA/ZPA) or equivalent SSE/SASE platforms Web Application Firewall (WAF) technologies such as Akamai, Cloudflare, or F5 Strong understanding of: Zero Trust architecture principles Network protocols, routing, and segmentation (TCP/IP, BGP, VPNs, etc.) Secure application and web traffic flows Troubleshooting complex, large-scale distributed network environments Additional requirements: Proven ability to lead technical initiatives and influence cross-functional teams.

Preferred Qualifications

• Experience with cloud platforms including Azure, AWS, or GCP and their native security services. Experience supporting Operational Technology (OT) or Process Control Network (PCN) environments. Familiarity with SASE/SSE architectures and implementations.

• Preferred Certifications CISSP CISM PCNSE CCNP Security Equivalent network or security certifications

Key Competencies Strong security mindset with the ability to apply risk-based decision-making, including determining when a security solution should—or should not—be implemented. Excellent analytical and problem-solving skills. Ability to translate business risks into practical technical security controls. Strong communication skills with both technical teams and executive leadership. Proven ability to operate effectively in high-visibility, high-impact environments. Self-motivated with a passion for continuous improvement and advancing security maturity.

Key Responsibilities

1. Security Architecture & Strategy Define and enforce enterprise network security standards, including firewall governance, least-privilege principles, and network segmentation. Design and drive Zero Trust architecture, including identity-aware and persona-based access controls. Develop secure network architectures for cloud, hybrid, and internet-facing environments. Lead network security workstreams for Mergers & Acquisitions (M&A), including integration planning and risk reduction. Drive adoption and maturity of Zscaler capabilities and the organization's Zero Trust strategy. Design and implement security controls for Specific Use Networks (SUN) and other controlled environments. Architect and secure high-trust environments, including Operational Technology (OT) and Process Control Networks (PCN).

2. Network Security Engineering, Operations & Delivery Design, implement, and administer enterprise firewall solutions. Configure, manage, and optimize Zscaler (ZIA/ZPA) for secure internet and private application access. Manage and tune Web Application Firewall (WAF) platforms such as Akamai to protect internet-facing applications. Design and manage IPsec VPN connectivity for B2B partners, including encryption standards, security policies, and lifecycle management. Monitor, troubleshoot, and resolve complex network security issues across distributed enterprise environments. Implement network segmentation, monitoring, and security controls aligned with industry best practices. Balance operational requirements with security controls across business-critical and high-trust environments. Conduct periodic firewall rule reviews to ensure compliance with security standards and audit requirements. Ensure adherence to regulatory requirements and internal security policies. Support security audits, risk assessments, and incident response activities when required.

About Solstice Advanced Materials

Solstice Advanced Materials is a leading global specialty materials company that advances science for smarter outcomes. Solstice offers high-performance solutions that enable critical industries and applications, including refrigerants, semiconductor manufacturing, data center cooling, nuclear power, protective fibers, healthcare packaging and more. Solstice is recognized for developing next-generation materials through some of the industry's most renowned brands such as Solstice®, Genetron®, Aclar®, Spectra®, Fluka™, and Hydranal™. Partnering with over 3,000 customers across more than 120 countries and territories and supported by a robust portfolio of over 5,700 patents, Solstice’s approximately 4,000 employees worldwide drive innovation in materials science. For more information, visit Advanced Materials .