Zero Trust & Microsegmentation Engineer

About the Role:Grade Level (for internal use):12The OpportunityIf you're an engineer who sees enterprise security not as a restriction — but as architecture — this role was built for you.At S&P Global, our Cybersecurity Engineering team is at the forefront of protecting one of the world's most trusted financial intelligence organizations. We're looking for a Micro-Segmentation Engineer who can bridge the gap between application complexity and security precision — someone who doesn't just understand how networks talk, but knows exactly when they shouldn't.You'll work at the intersection of network engineering, cybersecurity, and application architecture, collaborating with teams across the enterprise to design and enforce Zero Trust principles at scale. This is a high-visibility, high-impact role where your decisions directly shape the security posture of critical global infrastructure.What You'll DoArchitect and enforce enterprise-wide micro-segmentation policies across applications, servers, workloads, and cloud environments — directly reducing the attack surface and eliminating unnecessary east-west traffic that creates risk exposure.Map and validate application communication flows end-to-end — analyzing dependencies, ports, protocols, and authentication requirements — translating them into precise firewall rules, ACLs, and Zero Trust Network Access (ZTNA) controls that protect without disrupting business-critical operations.Drive policy assurance by performing traffic-flow analysis using network telemetry, NetFlow, packet captures, and application dependency mapping — validating segmentation outcomes before and after every change.Lead remediation and incident response — identifying and closing overly permissive connectivity gaps, serving as an approver for network change requests, and acting as a key contributor during major incidents to minimize impact and accelerate resolution.Automate and scale segmentation policy deployment, compliance reporting, and validation — building a robust Micro-Segmentation framework that enforces quality, change management rigor, and long-term operational resilience.Partner across the business — supporting cloud adoption, data-center transformations, and modernization initiatives by developing the documentation standards, labeling strategies, and segmentation procedures that govern the enterprise's network security posture.What's In It For You?We take care of you, so you can take care of business. We care about our people. That's why we provide everything you — and your career — need to thrive at S&P Global.Health & Wellness: Health care coverage designed for the mind and body.Flexible Downtime: Generous time off helps keep you energized for your time on.Continuous Learning: Access a wealth of resources to grow your career and learn valuable new skills.Invest in Your Future: Secure your financial future through competitive pay, retirement planning, a continuing education program with a company-matched student loan contribution, and financial wellness programs.Family Friendly Perks: It's not just about you. S&P Global has perks for your partners and little ones, too, with some best-in-class benefits for families.Beyond the Basics: From retail discounts to referral incentive awards — small perks can make a big difference.CompensationS&P Global states that the anticipated base salary range for this position is $150.000 to $190.000. Final base salary for this role will be based on the individual's geographic location, as well as experience level, skill set, training, licenses and certifications. In addition to base compensation, this role is eligible for an annual incentive plan. This role is eligible to receive additional S&P Global benefits. What We're Looking ForBasic (Required) QualificationsExperience: 5+ years of experience in network engineering, network security, cybersecurity, or infrastructure engineering.Networking Depth: Demonstrated expertise in TCP/IP, DNS, DHCP, routing, switching, VLANs, NAT, load balancing, and enterprise firewall management.Segmentation Track Record: 2+ years of hands-on implementation of micro-segmentation, network segmentation, or Zero Trust architectures in enterprise environments.Policy Expertise: Demonstrated ability to analyze application dependencies and translate port/protocol/authentication requirements into firewall rules, ACLs, or equivalent access-control policies.Additional Preferred QualificationsHands-on experience with enterprise micro-segmentation platforms — Akamai Guardicore Segmentation, Illumio, or Zscaler.Experience with cloud networking and security controls in AWS, Azure, or GCP.Experience with Kubernetes/container networking and workload segmentation.Experience deploying security policy automation using Terraform, Ansible, Python, or PowerShell.A track record of architecting and delivering Zero Trust Network Access (ZTNA) solutions at enterprise scale.Experience with SIEM platforms, network detection tools, and vulnerability management solutions.An active certification in: CCNP, CISSP, CompTIA Security+, PCNSE, AWS Security Specialty, or Microsoft AZ-500.What’s In It For You?Our Mission: Advancing Essential Intelligence.Our People:We're more than 35,000 strong worldwide—so we're able to understand nuances while having a broad perspective. Our team is driven by curiosity and a shared belief that Essential Intelligence can help build a more prosperous future for us all.From finding new ways to measure sustainability to analyzing energy transition across the supply chain to building workflow solutions that make it easy to tap into insight and apply it. We are changing the way people see things and empowering them to make an impact on the world we live in. We’re committed to a more equitable future and to helping our customers find new, sustainable ways of doing business. Join us and help create the critical insights that truly make a difference.Our Values:Integrity, Discovery, PartnershipThroughout our history, the world's leading organizations have relied on us for the Essential Intelligence they need to make confident decisions about the road ahead. We start with a foundation of integrity in all we do, bring a spirit of discovery to our work, and collaborate in close partnership with each other and our customers to achieve shared goals.Benefits:We take care of you, so you can take care of business. We care about our people. That’s why we provide everything you—and your career—need to thrive at S&P Global.Our benefits include: Health & Wellness: Health care coverage designed for the mind and body.Flexible Downtime: Generous time off helps keep you energized for your time on.Continuous Learning: Access a wealth of resources to grow your career and learn valuable new skills.Invest in Your Future: Secure your financial future through competitive pay, retirement planning, a continuing education program with a company-matched student loan contribution, and financial wellness programs.Family Friendly Perks: It’s not just about you. S&P Global has perks for your partners and little ones, too, with some best-in class benefits for families.Beyond the Basics: From retail discounts to referral incentive awards—small perks can make a big difference.For more information on benefits by country visit: Global Hiring and Opportunity at S&P Global:At S&P Global, we are committed to fostering a connected and engaged workplace where all individuals have access to opportunities based on their skills, experience, and contributions. Our hiring practices emphasize fairness, transparency, and merit, ensuring that we attract and retain top talent. By valuing different perspectives and promoting a culture of respect and collaboration, we drive innovation and power global markets.Recruitment Fraud Alert:If you receive an email from a spglobalind.com domain or any other regionally based domains, it is a scam and should be reported to View email address on click.appcast.io. S&P Global never requires any candidate to pay money for job applications, interviews, offer letters, “pre-employment training” or for equipment/delivery of equipment. Stay informed and protect yourself from recruitment fraud by reviewing our guidelines, fraudulent domains, and how to report suspicious activity here.-----------------------------------------------------------Equal Opportunity EmployerS&P Global is an equal opportunity employer and all qualified candidates will receive consideration for employment without regard to race/ethnicity, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, marital status, military veteran status, unemployment status, or any other status protected by law. Only electronic job submissions will be considered for employment. If you need an accommodation during the application process due to a disability, please send an email to: View email address on click.appcast.io and your request will be forwarded to the appropriate person.  US Candidates Only: Know Your Rights: Workplace discrimination is illegal-----------------------------------------------------------20 - Professional (EEO-2 Job Categories-United States of America), IFTECH202.2 - Middle Professional Tier II (EEO Job Group)SummaryLocation: Princeton, NJ; Colorado, USType: Full time