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Senior Network Security Engineer

At Northwestern Mutual, we are strong, innovative and growing. We invest in our people. We care and make a positive difference.

This is not a remote position. Will require 3 days onsite at the downtown Milwaukee office.

Primary Duties and Responsibilities

  • Leadership: The Senior Network Security Engineer is a leader within the Network Operations Team with the expectation to guide and mentor more junior members. This includes overseeing the work performed by junior engineers, mentoring their technical educational activities, freely sharing knowledge and testing techniques.

  • Infrastructure & Automation: Accountable for managing and maintaining security tools and infrastructure that supports Network Security. Focus on designing and implementing automation to aid the team in creating efficiencies.

  • Security Operations Support: Responsible for providing daily support of the Network Security Infrastructure. Responding and resolving Major Incidents. Responding and resolving Network Alerts and Monitoring the infrastructure with a proactive mindset.

  • Security Research: Accountable for regularly monitoring the security community for, and researching, the latest assessment and exploit methodologies. This work is concluded by sharing the information back to the team in the form of newly written tools and/or techniques via informal internal training sessions.

  • Reporting: Accountable for preparing and delivering the highest quality security information that comprehensively and clearly explains risk, demonstrates findings, and offers tactical and strategic recommendations to both technical and non-technical internal clients.

  • Communication: Effective and professional communication of a variety of topics, including technical and non-technical information, to a wide variety of internal and external customers including leadership from across the organization.

  • Training: Attend training to stay current with technology and security trends.

  • Perform other duties as assigned.


  • Bachelor’s degree with an emphasis in Computer Science, Computer Engineering, Software Engineering, MIS or related field.  One or more advanced security certifications (e.g. CISSP, PCNSE, PCNSA, CEH, ZIAA, ZIAP). 

  • 5+ years' experience in similar role.

  • Experience with Palo Alto Networks

  • Highly Technical and analytical hands-on experience with Network Security Appliances and Applications.

  • Highly Technical and analytical hands-on experience with Site-To-Site VPN, Client VPN, and Encryption/Decryption methods.

  • Highly Technical and analytical hands-on experience with Content Filtering and Network Access Policies.

  • Highly technical and analytical hands-on experience in prior professional, educational, or personal projects. 

  • Understanding of various attack methods and countermeasures.

  • Understanding of various security logs (firewalls, proxies, active directory, etc)

  • Understanding of networking concepts such as DNS, IP, NAT, VLANs, subnetting, etc.

  • Experience with both Windows and Linux operating systems. Including familiarity with the command line.

  • Understanding of the OSI Model, web and network protocols such as TCP, UDP and HTTP/S.

  • Competency with one or more scripting/programming languages such as Python, JavaScript, Java, Ruby, Go, PowerShell, Bash, C#, C/C++, etc.

  • Fundamental understanding of cryptography controls and underlying concepts to secure data.

  • Ability to independently identify and resolve issues through effective problem-solving skills.

  • Track record of acting with integrity, taking pride in work, seeking to excel, being curious, and adaptable.

  • Ability to maintain and strengthen relationships; ability to effectively influence and negotiate with internal and external partners.

  • Proven interpersonal savvy with demonstrated tact and diplomacy.

  • Strong written and verbal communication skills with the ability to interpret and fully explain the impact of vulnerabilities as well as any recommended remediation to multiple knowledge levels.

Preferred Qualification s

  • Experience with ZScaler.

Our Benefits!

  • Highly competitive compensation, including annual bonus opportunities

  • Medical/Dental/Vision plans, 401(k), pension program

  • Tuition reimbursement, commuter plans, and paid time off

  • Extensive Professional Training Opportunities

  • Excellent Work/Life Balance

Grow your career with a best-in-class company that puts our client’s interests at the center of all we do. Get started now!

We a re an equal opportunity/affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or status as a protected veteran, or any other characteristic protected by law.

If you work or would be working in California, Colorado, Ne w York City, Washington or outside of a Corporate location, please click here for information pertaining to compensation and benefits.

Please note: Any wages or wage ranges listed directly on a specific job requisition or posting will supersede corresponding wage ranges listed within Pay Transparency Guide linked above.​


We’re excited about the potential people bring to Northwestern Mutual. You can grow your career here while enjoying first-class perks, benefits, and commitment to diversity and inclusion.