Network Engineer Roles and Responsibilities in 2025: Job Description, Skills

In today’s hyper-connected world, network engineer roles and responsibilities have become more critical than ever. These professionals are the backbone of modern IT infrastructure- responsible for ensuring secure, stable, and high-performing networks that keep businesses running smoothly.

From configuring routers and switches to monitoring performance and guarding against security threats, their day-to-day tasks are as dynamic as the networks they manage.

At the most basic level, network engineers handle tasks like troubleshooting connectivity issues, setting up and maintaining hardware, implementing network solutions, and optimizing system performance. However, network engineer roles and responsibilities vary significantly depending on experience and job level.

In this blog, we’ll break down network engineer job descriptions across various levels, from L1 (Level 1) support handling entry-level issues, to L2 and L3 engineers tackling complex configurations and architectural challenges.

Whether you’re hiring for one of these positions or aspiring to grow your career in networking, this guide will help you understand what each role entails and the skills and certifications needed to succeed.

A network engineer is an IT professional who plays a vital role in building and maintaining the backbone of an organization’s digital communication infrastructure.

Their core responsibilities include designing, implementing, managing, and troubleshooting computer networks that support voice, data, video, and wireless services. This includes everything from Local Area Networks (LANs) and Wide Area Networks (WANs) to cloud-based networks and virtual private networks (VPNs).

Network engineers ensure seamless data flow, maintain high levels of uptime, and fortify the network against cyber threats. They work closely with IT teams and business units to ensure network solutions are scalable, secure, and aligned with organizational goals.

With the rapid expansion of remote work, cloud computing, and IoT (Internet of Things), the role of network engineers has become more crucial and more complex than ever before. As organizations modernize their digital infrastructure, the demand for skilled network professionals continues to grow.

According to the India Decoding Jobs 2025 report by Taggd, tech roles, especially in cloud, network, and security domains, remain among the most in-demand across IT and telecom sectors. This highlights the increasing strategic importance of network engineers in building future-ready infrastructure.

In India, the demand is even more pronounced due to the country’s digital transformation boom. The rapid rise of data centers, 5G rollout, cloud adoption, and startup ecosystem has made network engineering a high-demand profession. Sectors like IT services, telecommunications, banking, e-commerce, and manufacturing are actively hiring network engineers to support their expanding digital operations.

Skills-based hiring can help hiring managers and organisations ensure the success of projects.

Let’s explore the roles and responsibilities of network engineers based on different types of network engineers and categories of their work.

The network engineer JD (job description) can vary significantly depending on the size of the organization, the complexity of its IT infrastructure, and the specific industry it operates in.

However, the core network engineer roles and responsibilities remain centered around building and maintaining robust, secure, and efficient networking systems.

Network engineers are typically responsible for:

• Designing and deploying network infrastructure (LAN, WAN, VPNs, etc.)
• Troubleshooting network issues and resolving outages
• Ensuring network security through firewalls, intrusion prevention systems (IPS), and secure protocols
• Monitoring network performance and tuning it for optimal speed and reliability
• Collaborating with IT and cybersecurity teams to implement new technologies
• Maintaining up-to-date documentation of network setups and changes
• Managing hardware such as routers, switches, and wireless access points
• Supporting cloud networking with platforms like AWS, Microsoft Azure, and Google Cloud

In many organizations, network engineering roles are structured by experience and complexity of responsibilities, commonly categorized into L1, L2, and L3 levels. Here’s a breakdown of network engineer roles and responsibilities by level:

L1 Network Engineer (Level 1 – Entry-Level Support)

Network Engineer JD – L1

L1 engineers are the first line of defence for any network-related issues. They focus on routine monitoring and provide initial support to end users and systems.

Responsibilities:

• Monitor network performance and alerts using tools like SolarWinds or Nagios
• Respond to and escalate network tickets and incidents
• Perform basic troubleshooting (e.g., cable checks, IP conflicts, connectivity issues)
• Assist in setting up user access, patch panels, and ports
• Document recurring issues and escalate unresolved problems to L2
• Maintain and inventory network equipment and tools

Skills Required:

• Basic understanding of networking concepts (TCP/IP, DNS, DHCP)
• Familiarity with routers, switches, and firewalls
• Strong communication and problem-solving skills
• Certifications like CompTIA Network+ or CCNA (in progress) preferred

L2 Network Engineer (Level 2 – Intermediate Support and Configuration)

Network Engineer JD – L2

L2 engineers handle more complex issues and are responsible for configuring and optimizing network systems. They act as a bridge between support and design/architecture teams.

Responsibilities:

• Troubleshoot and resolve network incidents that L1 cannot handle
• Configure switches, routers, and firewalls (Cisco, Juniper, etc.)
• Analyze logs and traffic patterns to diagnose network bottlenecks
• Support VPN, VLANs, wireless networks, and site-to-site connectivity
• Implement routine changes and upgrades to network systems
• Maintain network diagrams and update technical documentation

Skills Required:

• In-depth knowledge of network protocols and device configuration
• Experience with Cisco IOS, Juniper OS, and firewall rules
• Ability to analyze and interpret logs, packet captures, and monitoring data
• Certifications like CCNA, CCNP, or equivalent

L3 Network Engineer (Level 3 – Senior-Level Design and Problem Solving)

Network Engineer JD – L3

L3 engineers are senior specialists responsible for high-level network architecture, strategic planning, and solving critical issues that affect business operations.

Responsibilities:

• Design and implement enterprise-level network architectures
• Lead major network upgrades, migrations, and deployments
• Resolve critical network issues and perform root cause analysis
• Define network policies, security standards, and compliance protocols
• Evaluate new networking technologies and tools
• Mentor L1 and L2 engineers and lead technical projects
• Collaborate with IT leadership and business units on strategic initiatives

Skills Required:

• Advanced expertise in networking, cloud integration, and security
• Proficiency in managing complex routing, switching, and firewalls
• Deep knowledge of BGP, OSPF, MPLS, SD-WAN, and QoS
• Certifications like CCNP, CCIE, AWS Certified Advanced Networking, or Palo Alto Networks

Whether you’re hiring a hands-on L1 engineer or a strategic L3 architect, understanding these tiered network engineer roles and responsibilities is key to building a resilient IT team.

Efficiently hiring skilled L1 to L3 network engineers requires a strong talent acquisition strategy. See how Taggd helped one of India’s top 3 IT majors reduce hiring inefficiencies and secure top tech talent.

Also Read: Desktop Support Engineer Roles and Responsibilities [2025]

Network engineers may hold different titles depending on their experience level and scope of responsibility. Here’s a breakdown of what each role typically involves:

Network Technician

• Entry-level, hands-on role
• Installs and maintains hardware like routers, switches, and cables
• Performs basic troubleshooting and resolves connectivity issues
• Supports the IT team in day-to-day networking tasks

Junior Network Engineer

• Assists with configuring network devices and monitoring systems
• Troubleshoots standard networking issues
• Documents network changes and helps maintain diagrams
• Works under the guidance of senior engineers

Senior Network Engineer

• Leads network design and implementation projects
• Configures advanced routing, switching, and security solutions
• Monitors network performance and resolves escalated issues
• Trains junior engineers and enforces network policies

Network Manager

• Oversees the entire networking team and daily operations
• Manages vendor relationships and infrastructure budgets
• Develops and enforces security and performance policies
• Coordinates with leadership to align IT strategy with business goals

Network Architect

• Designs the organization’s entire network infrastructure
• Plans future network upgrades, scalability, and disaster recovery
• Evaluates and recommends technologies for long-term growth
• Works closely with senior management and other IT architects

Specialized network engineers focus on specific technologies or environments.  Understanding the variety of network engineer roles and responsibilities– from technicians to architects, and across specialized domains like security and cloud is essential for building a modern IT team or planning a career path in networking.

Each role plays a crucial part in ensuring that digital infrastructure is secure, efficient, and future-ready. Here’s a simple overview:

Network engineers must possess a balanced mix of technical expertise and interpersonal skills to thrive in today’s fast-evolving tech landscape. As networks grow more complex with cloud, virtualization, and security demands, employers seek professionals who are not only technically sound but also adaptable and collaborative.

According to Cisco’s Global Networking Trends Report 2023, 85% of IT leaders say that skills in automation, cloud, and security are now essential for modern networking roles.

Thus, network engineers must posses both technical and soft skills to stand out and advance in their career.

Technical Skills

A strong foundation in networking technologies and tools is non-negotiable. Here are the key technical skills every network engineer should have:

• Networking Protocols- TCP/IP, DNS, DHCP, BGP, and OSPF – essential for routing and data flow
• Firewall & Security Tools- Cisco ASA, Palo Alto, Fortinet – used to secure networks and manage threats
• Cloud Networking- AWS VPC, Azure Virtual Networks – crucial for hybrid and cloud-native infrastructure
• Network Monitoring Tools- Wireshark, SolarWinds, Nagios – help diagnose, monitor, and optimize performance
• Scripting & Automation- Python, Ansible, PowerShell – used for automating routine tasks and configurations
  (As per LinkedIn’s 2024 Emerging Jobs Report, demand for automation skills in network roles has grown by 30% year-over-year)

Soft Skills

While technical know-how is important, soft skills help network engineers communicate and function effectively in cross-functional teams. According to the Taggd’s India Skills Report 2024, this is an overview of India’s skills and talent economy by 2030.

• Problem-Solving & Analytical Thinking- Critical for diagnosing complex issues and preventing network downtime
• Strong Communication Skills- Needed to explain technical issues to non-technical teams and collaborate with others
• Time Management- Helps juggle multiple projects, especially in dynamic enterprise environments

Also Read: HR Executive Roles and Responsibilities [2025]: Job Description, Skills, Growth Guide

In the highly competitive field of networking, certifications are more than just credentials- they’re a proven way to validate your technical skills, stay current with evolving technologies, and advance your career.

For professionals aiming to grow in various network engineer roles and responsibilities, earning industry-recognized certifications can significantly boost job opportunities and salary potential.

According to Global Knowledge’s 2023 IT Skills and Salary Report, IT professionals with certifications earn 15–20% more than their non-certified counterparts. Moreover, certified engineers are more likely to get promoted into specialized or leadership roles, particularly in areas like cloud networking, cybersecurity, and network architecture.

Top Certifications for Network Engineers

Here’s a breakdown of the most in-demand certifications that align with different network engineer roles and responsibilities, from entry-level to advanced:

Why Certifications Matter for Network Engineer Roles and Responsibilities

Each certification is tailored to specific career levels and job functions. Here’s how they align with various network engineer roles and responsibilities:

• For Entry-Level Roles (Technician, Junior Network Engineer)
  Recommended: CompTIA Network+, CCNA- These certifications establish a solid base in network fundamentals, making them ideal for L1 and L2 support roles that handle basic troubleshooting and setup tasks.
• For Mid-Level Roles (L2/L3 Engineers, Senior Network Engineers)
  Recommended: CCNP, JNCIA- These validate deeper knowledge in advanced configurations, routing protocols (like OSPF/BGP), and security—key for roles handling critical infrastructure.
• For Specialized or Cloud-Based Roles
  Recommended: AWS Advanced Networking- With cloud adoption booming in India and globally, cloud certifications are crucial for engineers managing hybrid networks and virtual environments.
• For Career Advancement
  Professionals with certifications are 35% more likely to be considered for leadership or architecture roles, according to Pearson Vue’s IT Certification Value Report (2023). These roles often include high-level responsibilities like designing enterprise networks, managing security policies, and integrating multi-site infrastructure.

The roles and responsibilities of a network engineer are critical in maintaining the backbone of modern businesses. From designing robust networks to safeguarding data, these professionals ensure seamless connectivity in an increasingly digital world.

If you’re considering a career in network engineering, focus on gaining hands-on experience, earning certifications, and staying updated with emerging technologies like SD-WAN and 5G. The field offers tremendous growth opportunities, making it an excellent choice for tech enthusiasts.

1. What are the daily responsibilities of a network engineer?

Daily roles and responsibilities of a network engineer are as follows-

• Design & Configure: Set up routers, switches, firewalls, and VPNs.
• Monitor & Troubleshoot: Check network performance, fix outages, and optimize speed.
• Security Management: Implement firewalls, encryption, and threat detection.
• Documentation: Maintain logs of network changes and configurations.
• Collaborate: Work with IT teams to deploy new tech and resolve issues.

2. What are the key skills of a network engineer?

A network engineer must possess both technical and soft skills-

Technical Skills:

• Networking (TCP/IP, BGP, OSPF, VLANs)
• Firewalls & Security (Cisco ASA, Palo Alto)
• Cloud (AWS, Azure Networking)
• Monitoring Tools (Wireshark, SolarWinds)
• Automation (Python, Ansible)

Soft Skills:

• Problem-solving
• Communication
• Time management

3. Which certifications are best for beginner network engineers?

Certified network professionals earn 15-20% higher salaries on average. Here are the following certifications best to advance a career in network engineering-

• CCNA (Cisco Certified Network Associate) – Best for fundamentals.
• CompTIA Network+ – Vendor-neutral basics.
• JNCIA (Juniper) – For Juniper networking.
• AWS/Azure Fundamentals – If interested in cloud networking.

4. What is the difference between L1, L2, and L3 network engineers?

5. What is the salary of a network engineer?

Network engineer salaries in India vary based on experience level, certifications, and company scale:

• Entry-Level (L1): ₹50,000 – ₹70,000 per month
• Mid-Level (L2): ₹70,000 – ₹1,00,000 per month
• Senior/Advanced Roles (L3, Cloud, Security): ₹1,00,000 – ₹1,50,000+ per month

If you are looking to hire skilled network engineers, you can outsource recruitment at Taggd. We specialize in Recruitment Process Outsourcing (RPO) and help businesses find top-tier network engineering talent tailored to their needs.

Whether you need network security experts, cloud engineers, or data center specialists, our data-driven recruitment approach ensures you get the right fit- fast.