Role description

Job Summary

We are seeking an experienced Senior Network Security Engineer to lead the design, implementation, and optimization of enterprise network security solutions across global environments. The role focuses on firewall-based network segmentation, Zero Trust Architecture (ZTA), security policy enforcement, and secure connectivity using enterprise firewall platforms. The ideal candidate will have robust expertise in designing secure, scalable, and resilient network infrastructures while ensuring compliance with organizational security standards.

Key Responsibilities

- Translate business objectives into secure network architecture designs and enterprise security solutions.
- Design, implement, and support firewall-based network security solutions using Juniper OR Palo Alto OR Fortinet OR any firewall technologies.
- Architect and implement network segmentation strategies across data center, campus, and cloud environments to limit lateral movement and enforce least-privilege access.
- Design and operationalize Zero Trust Architecture (ZTA) principles through identity, application, and network-based security controls.
- Collaborate with application and infrastructure teams to identify application dependencies and implement policy-driven segmentation.
- Define, deploy, and maintain granular security policies, security zones, routing controls, and segmentation strategies across hybrid environments.
- Integrate firewall platforms with SIEM, IAM, EDR/XDR, and cloud-native security controls for centralized visibility and policy enforcement.
- Participate in network security design reviews and ensure adherence to enterprise security standards.
- Analyze business and technical requirements to design and implement security controls across enterprise environments.
- Manage and optimize security monitoring, logging, and reporting capabilities.




- Support internal and external security audits, compliance reviews, and risk assessments.
- Develop, maintain, and update security policies, processes, and operational procedures.
- Monitor emerging cybersecurity threats and recommend improvements to strengthen the organization's security posture.
- Design, implement, and support secure VPN connectivity solutions for enterprise users and systems.
- Plan and execute infrastructure upgrades, migrations, and security enhancements following ITIL-based change management practices.

Required Skills

Proficient

- Juniper OR Palo Alto OR Fortinet OR any firewall

Intermediate

- ZTNA/ZTA

Basic

- VPN

Experience

- 10+ years of experience in network security and enterprise infrastructure environments.
- Proven experience designing and implementing firewall-based network segmentation and security controls in complex enterprise environments.
- Experience securing hybrid environments, including enterprise data centers and cloud platforms.

Education

- Bachelor's Degree in Computer Science, Network Engineering, Information Security, or a related field (or equivalent experience).

Certifications

Preferred certifications include

- CCNP or CCIE
- JNCIS, JNCIP, or JNCIE
- CISSP, CISM, or equivalent security certifications

Skills

Firewall, ZTNA, VPN

About UST

UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world’s best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation.

With deep domain expertise and a future-proof philosophy, UST embeds innovation and agility into their clients’ organizations. With over 30,000 employees in 30 countries, UST builds for boundless impact—touching billions of lives in the process.

📌 Senior Network Security Engineer – Firewall & ZTNA (Bengaluru)
🏢 UST
📍 Bengaluru