Security Engineer II

Department: Engineering
Location: Remote, UK
Updated on: June 02, 2023

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About Us 

MediaMath helps the world's top brands deliver personalized digital advertising across all connected touchpoints. Over 9,500 marketers in 42 countries use our demand-side platform every day to launch, analyze, and optimize their digital advertising campaigns across display, native, mobile, video, audio, digital out of home, and advanced TV formats. 

MediaMath initiated an industry-wide effort to create a 100% accountable, addressable and aligned supply chain through SOURCE ecosystem. SOURCE by MediaMath is a technical and commercial framework for agencies, brands, tech companies, and content owners designed to provide long-term sustainable solutions for a clean digital media supply chain with brand-safe, viewable inventory. MediaMath consists of a global workforce focused around 15 cities worldwide and is headquartered in New York City. 

The MediaMath IT team administers systems with a holistic approach and is responsible for the study, design, development, implementation, support and management of telecommunications and computer-based information systems and software. Providing support to our colleagues who utilize MediaMath systems in their day-to-day responsibilities and operations is a key function of the IT team.  It is our aim to ensure both a human-friendly working environment, while scaling solutions to provide secure and efficient technology to all MediaMath employees.  The IT Department is the backbone of our business, the underlying structure that reinforces MediaMath's growth, and propels this world-class organization to perform at the highest levels. 


The role: 

The MediaMath IT team is current seeking a Security Engineer II to assist with the day-to-day responsibilities of securing MediaMath’s data, facilities and its employees.  The Security Engineer II would report to the IT Operations Manager, and would be responsible for creating, maintaining, and documenting security information pertaining to our regular IT systems and process as well as software and applications used across the organization. 


You will:

  • Play a critical role in creating, planning and maintaining the overall security posture of systems, policies and infrastructure within the corporation.
  • Collaborate across departments to establish and enforce secure practices and procedures
  • Implement, configure, and manage security tooling and concepts such as CASB and DLP
  • Implement Security Best Practices within SAAS applications (SSO Okta, DLP Office365, FortiClient SIEM, Carbon Black AV Tools)
  • Configuration and ongoing Security Monitoring of SIEM Platform
  • Proactively understand, analyze, and research new technical problems and provide proactive solutions.
  • Perform vulnerability scanning, remediation, and guide patching efforts
  • Provisioning and ongoing management of WAF, DDoS, IPS, IDS, FIM, Firewalls and other security elements
  • Assist with the management and support of corporate VPN connectivity issues
  • Management of user access, roles and permissions to critical services
  • System hardening using NIST, CIS, GDPR or other guidelines
  • Participate in team on call rotation
  • Drive company security training efforts
  • Experience working with vendors, consultants, 3rd party integrators
  • Communicate and document troubleshooting techniques and best practices



  • Experience maintaining and improving security for hybrid infrastructure
  • Technical leader and valued contributor in a dynamic, autonomous, and diverse agile team
  • Perform endpoint management deployment
  • Experience implementing AWS (Amazon Web Services) Security Tooling and Best Practices
  • Experience with IAM deployment and management (Okta, Azure AD (Active Directory))
  • Experience with at least one scripting language (Python, PowerShell)
  • Experience managing IDS, IPS, FIM, AV
  • Experience managing WAF or Next-Gen Firewalls
  • Experience with SOC 2 evidence gathering
  • Strong Networking background preferred
  • Excellent project management and prioritization skills
  • Proficiency in cloud-based productivity apps (Office365, Jira, Confluence, Box, Slack, Zoom, etc.)
  • Excellent written and verbal communications skills.
  • Can function as a team player with the ability to instill trust and influence others
  • AdTech experience a strong plus

Why We Work at MediaMath

We are restless innovators, smart, passionate and kind. At the heart of our culture are six values that provide a framework for how we approach our work and the world: Teams Win, Scale + Innovation, Obsess Over Learning & Growth, Align then Execute, Do Good Better and Embrace the Journey. These values inform how we energize one another and engage with our clients. They get us amped to come to work.

Founded in 2007 as a pioneer in "programmatic" advertising, MediaMath is recognized as a Leader in the Gartner 2020 Magic Quadrant for Ad Tech and has won Best Account Support by a Technology Company for two years in a row in the AdExchanger Awards.