Tata Consultancy Services
Website:
tcs.com
Job details:
Job Title: Senior Network Subject Matter Expert (SME)
Experience: 8–12 Years Location: Chennai / Pan India
Job Summary
We are looking for an accomplished Senior Network Subject Matter Expert (SME) with deep expertise in enterprise networking to lead the design, implementation, optimization, and support of complex network infrastructures. The ideal candidate will serve as a technical authority across LAN, WAN, data center, and cloud networking technologies, ensuring high availability, security, and scalability across the organization.
Key Responsibilities
Network Architecture & Design
- Design and validate enterprise and data center network architectures aligned with business and security requirements.
- Develop High-Level Designs (HLD) and Low-Level Designs (LLD) for LAN, WAN, WLAN, Data Center, and Cloud connectivity.
- Define network standards, best practices, and reference architectures.
Implementation & Operations
- Lead the deployment, configuration, and optimization of complex network solutions.
- Provide L3/L4 support for critical network incidents, root cause analysis, and preventive measures.
- Ensure high availability, redundancy, disaster recovery, and performance optimization of network infrastructure.
Networking Technologies
- Manage and optimize enterprise networks involving:
- Routing & Switching (BGP, OSPF, EIGRP, STP)
- Data Center Networking
- WAN, SD-WAN, MPLS
- Network Security & Segmentation
- Work with firewalls, load balancers, VPNs, and zero-trust networking models.
Automation & Innovation
- Drive network automation using tools such as Ansible, Python, or vendor-specific APIs.
- Collaborate with DevOps, Cloud, and Infrastructure teams for integrated solutions.
- Evaluate new networking technologies and recommend improvements.
Cloud & Hybrid Networking
- Design and support networking for Hybrid and Multi-Cloud environments (AWS, Azure, GCP).
- Integrate on-premise networks with cloud environments using secure connectivity models.
Stakeholder & Vendor Management
- Act as a network SME and trusted advisor to architects, application teams, and leadership.
- Engage with vendors and service providers for solution design, escalations, and upgrades.
- Provide knowledge transfer, mentoring, and technical documentation.
Required Qualifications & Skills
Technical Skills
- Strong expertise in:
- LAN/WAN/Data Center Networking
- Routing & Switching protocols
- Network Security concepts
- SD-WAN and enterprise connectivity
- Hands-on experience with leading network vendors such as:
- Cisco, Juniper, Aruba, Palo Alto, Fortinet, F5
- Practical exposure to network monitoring, troubleshooting, and performance tuning tools.
- Knowledge of automation/scripting is highly desirable.
Certifications (Preferred)
- CCNP / CCIE / JNCIP / JNCIE
- Network Security certifications (PCNSE, NSE, etc.) are a plus
- Cloud networking certifications (AWS/Azure) are advantageous
Experience & Competencies
- 8–12 years of hands-on networking experience in large-scale enterprise environments.
- Proven experience working as a Network SME / Technical Lead / Architect.
- Excellent troubleshooting, analytical, and decision-making skills.
- Strong communication skills with the ability to explain complex technical topics to non-technical stakeholders.
- Ability to work independently and lead critical network initiatives.
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