Sr Network Security Engineer

CREATIVITY IS OUR SUPERPOWER. It’s our heritage and it’s also our future. Because we don’t just make toys. We create innovative products and experiences that inspire fans, entertain audiences and develop children through play. Mattel is at its best when every member of our team feels respected, included, and heard-when everyone can show up as themselves and do their best work every day. We value and share an infinite range of ideas and voices that evolve and broaden our perspectives with a reach that extends into all our brands, partners, and suppliers.

We are seeking a highly skilled Security Administrator to join our growing IT Security team. This role is responsible for administering and supporting enterprise-grade email security systems, PKI infrastructure, web application firewalls (WAF), and certificate lifecycle management platforms. The ideal candidate will have hands-on experience with tools such as Checkpoint Harmony, Keyfactor, and Imperva WAF, and possess a solid understanding of Microsoft 365 mail routing, DNS TXT records, and external Certificate Authorities.

Roles and Responsibilities

Email Security

• Administer and support enterprise email security platforms using Checkpoint Harmony.

• Maintain and troubleshoot email security records such as DMARC, DKIM, and SPF.

• Collaborate with O365 messaging teams to resolve mail delivery and routing issues.

• Work closely with the Wintel/DNS teams to manage and troubleshoot DNS TXT records.

Public Key Infrastructure (PKI)

• Administer and support enterprise PKI infrastructure using Keyfactor.

• Create and modify certificate workflows, templates, and custom reports in Keyfactor.

• Manage and track certificate lifecycles to prevent service disruptions.

• Support integrations for certificate automation via Keyfactor or similar tools.

• Maintain CRLs and SCEP servers.

• Resolve incidents related to PKI and certificates from all levels of the incident queue.

Web Application Firewall (WAF)

• Administer and support Imperva WAF platform.

• Onboard and offboard websites to the WAF environment.

• Troubleshoot web application issues related to WAF configurations.

• Create, update, and tune WAF policies to ensure application availability and security.

• Work closely with the Wintel/DNS teams to manage and troubleshoot DNS TXT records and CNAMES

Skills and Qualifications

Required:

• 7+ years of experience in Network Security operations,

• Proven expertise with Enterprise Email Security, PKI and WAF platforms

• Strong understanding of Microsoft 365 mail flow, mail routing, and security policies.

• Experience with Windows Server configuration for PKI

• Experience or knowledge of external DNS records (SPF, DKIM, DMARC).

• Proficiency with certificate management platforms like Keyfactor or Venafi.

• Experience with external Certificate Authorities (e.g., GlobalSign, Entrust, DigiCert).

• Hands-on experience with Microsoft PKI environments.

• Familiarity with Content Delivery Networks (CDNs).

• Experience working in mid to large enterprise environments.

• Ability to work in a 24/7 operational environment.

• Strong troubleshooting skills and experience with ServiceNow or similar ticketing systems.

• Ability to write and maintain clear Standard Operating Procedures (SOPs).

• Experience supporting compliance and audit initiatives (e.g., SOX, NIST CSF, PCI).

• Ability to collaborate effectively with cross-functional teams and vendors.

Preferred:

• Bachelor’s degree in information technology, Cybersecurity, or related discipline

• Certifications such as Checkpoint Harmony Endpoint Specialist R81.20 (CCES), Microsoft 365 Certified: Messaging Administrator Associate, Proofpoint Threat Protection Administrator

• Experience with ServiceNow ITSM processes and workflow automation.

What We’re Looking For:

• Demonstrated a growth mindset by staying curious and continuously learning, embracing challenges, and improving themselves.

Don’t meet every single requirement? At Mattel, we are dedicated to an inclusive workplace and a culture of belonging. If you’re excited about this role but your past experience doesn’t align perfectly with every qualification in the job description, we still encourage you to apply. You may be just the right candidate for this or other roles.

How We Work:

We are a purpose driven company aiming to empower generations to explore the wonder of childhood and reach their full potential. We live up to our purpose employing the following behaviors:

• We collaborate: Being a part of Mattel means being part of one team with shared values and common goals. Every person counts and working closely together always brings better results. Partnership is our process and our collective capabilities is our superpower.
• We innovate: At Mattel we always aim to find new and better ways to create innovative products and experiences. No matter where you work in the organization, you can always make a difference and have real impact. We welcome new ideas and value new initiatives that challenge conventional thinking.
• We execute: We are a performance-driven company. We strive for excellence and are focused on pursuing best-in-class outcomes. We believe in accountability and ownership and know that our people are at their best when they are empowered to create and deliver results.

Our Approach to Flexible Work:

We embrace a flexible work model designed to empower a culture of growth, optimism, and wellbeing, where every employee can reach their full potential. Combining purposeful in-person collaboration with flexibility, our focus is to optimize performance and drive connection for moments that matter.

Who We Are:

Mattel is a leading global toy and family entertainment company and owner of one of the most iconic brand portfolios in the world. We engage consumers and fans through our franchise brands, including Barbie, Hot Wheels, Fisher-Price, American Girl, Thomas & Friends, UNO, Masters of the Universe, Matchbox, Monster High, MEGA and Polly Pocket, as well as other popular properties that we own or license in partnership with global entertainment companies. Our offerings include toys, content, consumer products, digital and live experiences. Our products are sold in collaboration with the world’s leading retail and ecommerce companies. Since its founding in 1945, Mattel is proud to be a trusted partner in empowering generations to explore the wonder of childhood and reach their full potential.

Mattel’s award-winning workplace culture has been recognized by Forbes, Fast Company, Newsweek, Great Place to Work, TIME, and more.

Visit us at https://jobs.mattel.com/ and www.instagram.com/MattelCareers.

Mattel is an Equal Opportunity Employer where we want you to bring your authentic self to work every day. We welcome all job seekers, and all applicants will receive consideration for employment.

Videos to watch:

The Culture at Mattel

Corporate Philanthropy