Senior Network Security Engineer

Persistent Systems Limited; Dadri; On-site; INR 2,000,000 - 3,200,000; Full time

Benefits offered by this job

Group term life insurance

Mediclaim hospitalization

Personal accident insurance

Flexible work hours

Long Service awards

Job summary

Persistent Systems Limited seeks a Senior Network Security Engineer to design, implement, and manage secure network infrastructure with focus on Palo Alto technologies. You will lead architecture, policy configuration, and cross-team collaboration to ensure high availability and security adherence.

The role requires hands-on NGFW experience, VPN, and automation scripting, with a strong emphasis on incident resolution and scalable security design.

Qualifications

• 8+ years of experience in Network Engineering with focus on firewall deployment, migration and support.
• Deep expertise in Palo Alto Firewall administration, deployment, configuration and operational support.
• Hands-on experience with Next-Generation Firewalls (NGFWs) and VPN technologies.
• Strong understanding of network protocols, routing, switching and security policies.
• Experience planning firewall migrations, cutovers, validation and post-deployment support.

Responsibilities

• Design, implement, and manage secure network infrastructure using Palo Alto Firewall technologies.
• Define scalable, secure network architectures aligned to business and security objectives.
• Lead technical discovery sessions and evaluate security requirements and risks.
• Develop implementation strategies, controls, and operational standards.
• Configure and optimize Palo Alto Firewall policies, NAT rules, and VPN configurations.
• Support routing, switching, connectivity management, and performance optimization.
• Collaborate with infrastructure, security, cloud, and application teams for integration.

Skills

Palo Alto Firewall

NGFW deployment

VPN technologies

Network security design

Automation scripting

Python

PowerShell

Ansible

Cross-functional collaboration

Troubleshooting

Cloud networking basics

Tools

Palo Alto PanOS

Job description

We are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients anticipate what’s next. Our offerings and proven solutions create a unique competitive advantage for our clients by giving them the power to see beyond and rise above. We work with many industry-leading organizations across the world, including 20 Fortune 50 companies and 4 of the 5 top banks in both the US and India, and numerous innovators across the healthcare ecosystem.

We are seeking an experienced Senior Network Security Engineer to join our team and drive the design, implementation, and management of secure network infrastructure solutions. The ideal candidate will possess strong expertise in Palo Alto Firewall technologies, network administration, and enterprise firewall management. This role requires a blend of hands-on technical delivery, solution design, operational excellence, stakeholder collaboration, and technical leadership to ensure secure, scalable, and highly available network environments.

• Role: Senior Network Security Engineer
• Location: Noida
• Experience: 8 to 12 Years
• Job Type: Full Time Employment

What You'll Do:

• Design, implement, and manage secure network infrastructure solutions using Palo Alto Firewall technologies.
• Define scalable, resilient, and secure network architectures that align with business and security objectives.
• Lead technical discovery sessions and evaluate network security requirements, risks, and solution alternatives.
• Develop implementation strategies, network security controls, and operational standards.
• Configure, maintain, and optimize Palo Alto Firewall policies, security profiles, NAT rules, and VPN configurations.
• Support network administration activities including routing, switching, connectivity management, and performance optimization.
• Collaborate with infrastructure, security, cloud, and application teams to ensure seamless integration of network security controls.
• Drive automation, configuration reviews, testing, troubleshooting, and production readiness initiatives.
• Monitor network health, security incidents, and performance metrics to ensure high availability and reliability.
• Conduct root-cause analysis and resolve complex network and firewall-related issues.
• Implement and enforce security best practices, compliance requirements, and governance standards.
• Support migration, upgrade, and transformation projects involving network security platforms.
• Create and maintain network architecture documentation, operational procedures, and technical runbooks.
• Mentor junior engineers and promote engineering best practices, reusable solutions, and technical standards.

Expertise You'll Bring:

• 8 to 12 years of experience in Network Engineering with a strong focus on firewall deployment, migration, and support.
• Deep expertise in Palo Alto Firewall administration, deployment, configuration, and operational support.
• Hands-on experience configuring and managing Next-Generation Firewalls (NGFWs).
• Strong knowledge of VPN technologies, NAT, routing protocols, traffic management, and enterprise security policies.
• Experience planning and executing firewall migration projects, cutovers, validation activities, and post-deployment support.
• Strong understanding of network protocols, routing concepts, switching technologies, and network architecture.
• Proven troubleshooting skills across firewall, routing, connectivity, performance, and security-related issues.
• Experience providing Tier 2 and Tier 3 support within enterprise environments.
• Proficiency in automation and scripting using PowerShell, Python, Ansible, or similar technologies.
• Experience implementing network automation initiatives and operational efficiency improvements.
• Strong understanding of network security principles, segmentation, access control, and threat prevention technologies.
• Experience coordinating with infrastructure, application, operations, and cybersecurity teams.
• Knowledge of cloud networking and cloud security best practices across AWS, Azure, or GCP environments.
• Familiarity with hybrid network architectures and cloud connectivity solutions.
• Experience with additional firewall technologies and enterprise network security platforms.
• Palo Alto certifications such as PCNSE or equivalent network security certifications are highly desirable.
• Strong analytical, troubleshooting, and root-cause analysis capabilities.
• Excellent verbal and written communication skills.
• Ability to work effectively in cross-functional and geographically distributed teams.
• Experience maintaining deployment documentation, operational procedures, and technical runbooks.
• Strong ownership mindset with focus on reliability, security, and operational excellence.
• Ability to lead complex network deployment and migration initiatives from planning through production support.
• Commitment to continuous learning and staying current with emerging networking and cybersecurity technologies.
• Competitive salary and benefits package
• Culture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certifications
• Opportunity to work with cutting-edge technologies
• Employee engagement initiatives such as project parties, flexible work hours, and Long Service awards
• Insurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents

Values-Driven, People-Centric & Inclusive Work Environment:

Persistent is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals, including those with disabilities, and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.

• We support hybrid work and flexible hours to fit diverse lifestyles.
• Our office is accessibility-friendly, with ergonomic setups and assistive technologies to support employees with physical disabilities.
• If you are a person with disabilities and have specific requirements, please inform us during the application process or at any time during your employment

“Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.”