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Senior Network Engineer Jobs in Manchester, NH (NOW HIRING)

Arista Networks

Software Engineer, Layer1

Nashua, NH

Stable and reliable physical connectivity is critical for any network and that is your challenge ... Arista Software Engineering roles demand a strong and broad software engineering background. While ...

Arista Networks

Software Engineer, Layer1

Nashua, NH · On-site

Stable and reliable physical connectivity is critical for any network and that is your challenge ... Arista Software Engineering roles demand a strong and broad software engineering background. While ...

PCI Pharma Services

Sr. Automation Engineer

Bedford, NH · On-site

$102K - $134K/yr

Our strategy includes building teams across our global network to pioneer and shape the future of PCI. JOB SUMMARY The Senior Automation Engineer works under the direction of the Senior Automation ...

Page Mechanical Group, Inc.

Senior IT Engineer

Salem, NH · On-site

$125 - $150/hr

Sr. IT Engineer The Sr IT Engineer will help to oversee and direct all aspects of EIT Zollner ... Data and network integrity, backup and security including knowledge of CMMC while working with the ...

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All JobsNetwork Engineer JobsSenior Network Engineer JobsSenior Network Engineer Jobs in Manchester, NH

Senior Network Engineer information

See Manchester, NH salary details

$42.3K

$123.3K

$174.2K

How much do senior network engineer jobs pay per year?

As of Sep 7, 2026, the average yearly pay for senior network engineer in Manchester, NH is $123,250.00, according to ZipRecruiter salary data. Most workers in this role earn between $103,600.00 and $141,900.00 per year, depending on experience, location, and employer.

What is a senior network engineer?

Senior Network Engineers are experienced IT professionals responsible for designing, implementing, and managing complex computer networks within organizations. They oversee network infrastructure, troubleshoot issues, ensure network security, and optimize performance. Typically, they lead network projects, mentor junior staff, and collaborate with other IT teams to support business operations. Their expertise covers a range of technologies, including routers, switches, firewalls, and cloud networking.

What does a senior network engineer do?

A senior network engineer builds and maintains data communication networks for a company or organization. As a senior network engineer, you have several years of industry experience and lead a team of junior network engineers and network administrators to ensure both the local area network (LAN) and wide area network (WAN) are functioning properly. Your job duties include installing software and hardware, creating a layout plan for cables, and troubleshooting and solving problems that arise with the networks for which you are responsible.

What are the key skills and qualifications needed to thrive as a senior network engineer, and why are they important?

To excel as a Senior Network Engineer, you need a deep understanding of network architecture, protocols, security, and typically a bachelor's degree in computer science or a related field. Expertise in configuring and troubleshooting routers, switches, firewalls, and experience with tools like Cisco IOS, Juniper, or cloud networking platforms, along with certifications such as CCNP or CCIE, are highly valued. Strong problem-solving abilities, communication skills, and leadership are crucial for designing solutions and collaborating with IT teams. These competencies ensure reliable, secure, and scalable network infrastructures that support critical business operations.

What are some common challenges faced by senior network engineers when managing large-scale network infrastructures?

Senior Network Engineers often encounter challenges such as integrating new technologies into legacy systems, ensuring network security across a growing number of devices, and maintaining high availability while performing upgrades or troubleshooting. Balancing the demands of multiple stakeholders—like IT, security, and business units—can also be complex. Staying updated with evolving protocols and proactively identifying potential performance bottlenecks are crucial parts of effectively managing large-scale environments.

What is the difference between Senior Network Engineer vs Network Administrator?

AspectSenior Network EngineerNetwork Administrator
CertificationsCCNP, CCIE, Cisco certificationsCCNA, CompTIA Network+
Work EnvironmentDesign, implement, and troubleshoot complex networksMaintain and support existing network infrastructure
ResponsibilitiesNetwork architecture, advanced troubleshooting, project leadershipNetwork setup, monitoring, routine maintenance

While both roles involve network management, a Senior Network Engineer focuses on designing and implementing complex network solutions, often leading projects. In contrast, a Network Administrator primarily maintains and supports existing networks, ensuring smooth daily operations.

More about Senior Network Engineer jobs

What are the most commonly searched types of Network Engineer jobs in Manchester, NH?

The most popular types of Network Engineer jobs in Manchester, NH are:

What cities near Manchester, NH are hiring for Senior Network Engineer jobs?

Cities near Manchester, NH with the most Senior Network Engineer job openings:

Senior Network Engineer jobs near you
Infographic showing various Senior Network Engineer job openings in Manchester, NH as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 14% Part Time, and 6% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $123,250 per year, or $59.3 per hour.

Lead Software Engineer, Physical Network Layer

Arista Networks

Nashua, NH • On-site

$102K - $141K/yr

Full-time

Re-posted 2 days ago

Job description

Company Description
Arista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. What sets us apart is our relentless pursuit of innovation. We leverage the latest advancements in cloud computing, artificial intelligence, and software-defined networking to provide our clients with a competitive edge in an increasingly interconnected world. Our solutions are designed to not only meet the current demands of the digital landscape but to also anticipate and adapt to future challenges.
At Arista we value the diversity of thought and perspectives that each employee brings to the table. We believe that fostering an inclusive environment, where individuals from various backgrounds and experiences feel welcome, is essential for driving creativity and innovation.
Our commitment to excellence has earned us several prestigious awards, such as Best Engineering Team, Best Company for Diversity, Compensation, and Work-Life Balance. At Arista, we take pride in our track record of success and strive to maintain the highest standards of quality and performance in everything we do.
Job Description
Who You'll Work With
Arista Networks is looking for world-class Senior/Lead Layer1 software engineers.
As a Layer1 software engineer, you will get to work on software that manages the physical layer, where packets meet the outside world. Stable and reliable physical connectivity is critical for any network and that is your challenge. You will get to write control software that brings to life everything from the ubiquitous 1GBASE-T connectors to 1.6T long reach optics that provide fiber connectivity across continents. Your software will need to work across a wide variety of forwarding engines, connectors and interface chips called gearboxes, which allow our hardware platforms to support diverse physical connectivity options within a product family. You will build instrumentation and telemetry tools that track physical link health parameters reported by the Layer1 components and enable operators to monitor and troubleshoot their links effectively. You will also work closely with our Optics teams to define standards for new media and bring them to market.
Arista Software Engineering roles demand a strong and broad software engineering background. While the primary focus area for this role is Layer1 software, the role will cover all aspects of software development spanning the addition of new features, debugging problems and fine tuning code for scalability and performance. You will own your projects from definition to deployment and customer interactions, and you will be responsible for the quality of everything you deliver.
Arista Software Engineering prides itself on a supportive and growth oriented culture, which provides opportunities for increased responsibilities, and to expand expertise into new areas.
What You'll Do
  • Interface with customers, product management and hardware engineers to come up with innovative new Layer1 features.
  • Architect, design and manage the development of these features.
  • Develop and maintain features using C, C++ and Python, review and contribute to functional and design specifications. Build automated tests and test infrastructure to test the features.
  • Work with hardware and manufacturing teams to bring new Layer1 components like Phys and Transceivers to market.
  • Collaborate with hardware engineers to design optimal software control interfaces for managing Layer1 components.
  • Provide technical leadership across features, projects and tools.
  • Work with Customer Support Engineers and customers to analyze, mitigate and fix problems in customer networks.
  • Work with the System Test Engineers to analyze problems found in their tests and provide fixes for those problems.
  • Mentor new and junior engineers to bring them up to speed in Arista's software development environment.

Qualifications
  • BS Computer Science/Electrical Engineering/Computer Engineering + 6 years experience, or MS Computer Science/Electrical Engineering/Computer Engineering + 4 years experience, or Ph.D. in Computer Science/Electrical Engineering/Computer Engineering + 3 years experience, or equivalent work experience
  • Expert knowledge of C or C++ and Python.
  • Experience working with low level hardware components
  • Knowledge of digital communication technologies like modulation and signal encoding schemes
  • Knowledge of UNIX or Linux
  • Understanding and ability to apply software engineering principles
  • Strong problem solving and software troubleshooting skills
  • Demonstrated technical leadership, strong communication skills, and the ability to work in a small team environment
  • Ability to design a solution and implement features independently
  • Understanding of IP networking and/or distributed systems is a plus

#LI-SP1
Additional Information
Arista Networks is an equal opportunity employer. Arista makes all hiring and employment-related decisions in a non-discriminatory manner without regard to race, color, religion, sex, sexual orientation, gender identity, national origin or any other factor determined to be unlawful under applicable federal, state, or law law. All your information will be kept confidential according to EEO guidelines.

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