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# Network Security Engineer

- **Company:** Tata Consultancy Services Limited
- **Location:** St. Louis, MO, United States
- **Experience:** Expert
- **Salary:** $105,000 - $125,000
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Proxy Servers, Microsoft Azure, Cloud Computing Security, Cyber Security, Information Systems Security Architecture Professional, Network Security, Network Segmentation, Cloud Services, Ansible, Firewall Policy Management, Scripting, Tools for Reporting, Terraform
- **Published:** November 5, 2026
- **Apply:** https://diversityjobs.com/career/18844027/Network-Security-Engineer-Missouri-St-Louis

## About the Role

* Demonstrated professional experience in network or security engineering, with the ability to independently design, implement, and support enterprise network security solutions.
 * Experience securing AWS and/or Azure environments.
 * Hands-on experience with next-generation firewalls, preferably Palo Alto.
 * Strong knowledge of network segmentation, security operations, and risk assessment.
 * Ability to perform security reviews, identify gaps, and implement remediation actions.
 * Working knowledge of WAF, IPS, web proxy, and DLP technologies.
 * Experience creating technical standards, documentation, and architecture diagrams.
 * Familiarity with Ansible, Terraform, scripting, APIs, and security monitoring/reporting tools.
 * Strong communication, collaboration, and mentoring skills.
 * Flexibility to support after-hours or on-call work when needed.

## Description

* The Network Security Engineer 3 will design, implement, and support enterprise network and cloud security solutions, with a focus on segmentation, firewall management, secure design, and risk reduction.
 * Design and support secure network and cloud solutions across enterprise environments.
 * Configure and manage next-generation firewalls, preferably Palo Alto.
 * Develop network segmentation and secure architecture patterns.
 * Perform security reviews and risk assessments, identify gaps, and drive remediation.
 * Support WAF, IPS, web proxy, DLP, and related security technologies.
 * Create and maintain standards, architecture diagrams, and technical documentation.
 * Automate repeatable security activities using Ansible, Terraform, scripting, or APIs where appropriate.
 * Partner with infrastructure, cloud, application, and cybersecurity teams to reduce risk and strengthen security practices.
 * Support security incidents, production changes, and after-hours activities when required.