Senior Network Engineer

OSTTRA Group; India; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

OSTTRA Group is seeking a network infrastructure engineer to join our global backbone team. You will manage routing, security, and application delivery across Juniper, Palo Alto, and F5 platforms, driving automation and IaC workflows.

You will work with Terraform, Terragrunt, and Ansible to keep configurations DRY and secure, while collaborating with DevOps and cloud squads to keep services resilient and scalable.

Qualifications

• Juniper Networks: Expert-level knowledge of Junos OS, routing, and switching.
• Palo Alto Networks: Hands-on firewall management and policy configuration.
• F5 LTM: Proficiency in load balancer configuration and SSL offloading.
• Automation: Experience with infrastructure as code for network environments.
• Terragrunt/Terraform: Knowledge of state management and modular design.
• Ansible: Ability to write playbooks from scratch for network automation.

Responsibilities

• Manage Juniper EX/QFX switches and MX routers across the lifecycle.
• Administer Palo Alto firewalls, tune policies, review logs for Deny/Drop.
• Operate F5 BIG-IP load balancers, VIPs, pools, and SSL offload.
• Maintain IaC pipelines with Terragrunt and Terraform for DRY configurations.
• Develop Ansible playbooks to automate OS upgrades and bulk config updates.
• Collaborate with DevOps and Cloud teams to ensure reliable delivery.

Skills

Juniper Networks

Palo Alto Networks

F5 LTM

Terragrunt

Terraform

Ansible

Python

Cloud Networking

Tools

Terragrunt

Terraform

Ansible

Junos OS (CLI)

Palo Alto Panorama

F5 BIG-IP

Juniper EX/QFX/MX devices

Job description

Job Overview

About the Role:

The team:

ou will be joining a high-impact infrastructure team dedicated to building, securing, and automating our global network backbone. We are a group of engineers who believe in "Infrastructure as Code" and are transitioning from traditional network management to a fully automated, self-healing network environment. We prioritize stability, security, and scalability, working closely with DevOps and Cloud teams to ensure seamless application delivery.

Responsibilities and impact:

• Juniper Routing & Switching: Manage the full lifecycle of Juniper EX/QFX switches and MX routers. Configure and troubleshoot complex routing protocols (BGP, OSPF), VLAN segmentation, and port security.
• Security Operations: Administer Palo Alto firewalls. Manage security policies, analyze traffic logs for "Deny/Drop" issues, and implement User-ID/App-ID features to secure business flows.
• Application Delivery: Manage F5 BIG-IP load balancers, including Virtual IP (VIP) creation, pool management, and SSL offloading.

Infrastructure as Code (IaC) & Automation

Terragrunt & Terraform: Maintain network infrastructure state using Terragrunt. You will be responsible for keeping configurations "DRY" (Don't Repeat Yourself) and managing infrastructure-as-code pipelines.

Ansible Automation: Create and maintain Ansible playbooks to automate routine tasks such as OS upgrades (Junos/Pan-OS), bulk config updates, and compliance auditing.

What we're looking for:

Must-Have Technical Skills

• Juniper Networks: Expert-level knowledge of Junos OS (CLI), routing (BGP/OSPF), and switching.
• Security: Strong hands-on experience with Palo Alto Networks (Panorama experience is a plus).
• Load Balancing: Proficiency with F5 LTM (Local Traffic Manager).
• Automation:
• Terragrunt: Must understand state file management and modular infrastructure code (not just basic Terraform).
• Ansible: Ability to write playbooks from scratch for network automation.

Nice-to-Have Skills

• Alkira: Experience with Cloud Network as a Service (CNaaS).
• Public Cloud: AWS (Advanced Networking) or GCP networking knowledge.
• Scripting: Python for network automation.

Soft Skills & Attributes

• Executive Presence: Ability to communicate complex technical issues clearly and calmly to non-technical leadership.
• Independence: Capable of traveling to client sites and executing deployments solo without constant supervision.
• Proactive Mindset: You don't just close tickets; you identify why the issue happened and fix the root cause.