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Computer Science Engineer Jobs in New Hampshire (NOW HIRING)

Arista Networks

Software Engineer, Layer1

Nashua, NH · On-site

D. in Computer Science/Electrical Engineering/Computer Engineering + 1 years experience, or equivalent work experience * Expert knowledge of C or C++ and Python. * Knowledge of UNIX or Linux

Peraton

Software Engineer

Bedford, NH · On-site

$112K - $179K/yr

Bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering, Applied Mathematics, Physics, or related scientific/engineering discipline. * Ability and desire to quickly ...

Peraton

Software Engineer

Bedford, NH · On-site

$112K - $179K/yr

Bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering, Applied Mathematics, Physics, or related scientific/engineering discipline. * Ability and desire to quickly ...

Peraton

Software Engineer

Bedford, NH · On-site

$112K - $179K/yr

Bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering, Applied Mathematics, Physics, or related scientific/engineering discipline. * Ability and desire to quickly ...

jobr.pro

BIOS Senior/Lead Software Engineer

Nashua, NH · On-site

$120 - $180/hr

D. in Computer Science/Electrical Engineering/Computer Engineering + 3 years experience, or equivalent work experience * Expert knowledge of and extensive experience programming in C required.

Corning

Manufacturing Software Engineer

Keene, NH · On-site

Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a closely related field. * 3-5+ years industry experience in software engineering, preferably in scientific ...

Corning

Manufacturing Software Engineer

Keene, NH

Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a closely related field. * 3-5+ years industry experience in software engineering, preferably in scientific ...

Corning

Manufacturing Software Engineer

Keene, NH · On-site

Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a closely related field. * 3-5+ years industry experience in software engineering, preferably in scientific ...

Lonza

Senior IT Validation Engineer

Dover, NH · On-site

Bachelor's degree in computer science, engineering, or related field. * At least 3+ years of experience in computer systems validation. * 3+ years of Experience in working in a cGMP facility.

Lonza

Senior IT Validation Engineer

Portsmouth, NH · On-site

Bachelor's degree in computer science, engineering, or related field. * At least 3+ years of experience in computer systems validation. * 3+ years of Experience in working in a cGMP facility.

Lonza

Senior IT Validation Engineer

Dover, NH · On-site

Bachelor's degree in computer science, engineering, or related field. * At least 3+ years of experience in computer systems validation. * 3+ years of Experience in working in a cGMP facility.

Lonza

Senior IT Validation Engineer

Portsmouth, NH · On-site

Bachelor's degree in computer science, engineering, or related field. * At least 3+ years of experience in computer systems validation. * 3+ years of Experience in working in a cGMP facility.

Lonza

Senior IT Validation Engineer

Dover, NH · On-site

Bachelor's degree in computer science, engineering, or related field. * At least 3+ years of experience in computer systems validation. * 3+ years of Experience in working in a cGMP facility.

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All JobsComputer Science Engineer JobsComputer Science Engineer Jobs in New Hampshire

Computer Science Engineer information

See New Hampshire salary details

$47.2K

$118.2K

$133.7K

How much do computer science engineer jobs pay per year?

As of Aug 11, 2026, the average yearly pay for computer science engineer in New Hampshire is $118,175.00, according to ZipRecruiter salary data. Most workers in this role earn between $108,400.00 and $127,900.00 per year, depending on experience, location, and employer.

What do computer science engineers do?

Computer Science Engineers often collaborate with professionals from diverse backgrounds such as product managers, designers, and data analysts. Typical projects may include developing scalable software applications, optimizing algorithms for performance, or integrating new technologies into existing systems. These engineers are frequently involved in code reviews, planning meetings, and cross-functional brainstorming sessions to ensure solutions meet both technical and business requirements. This collaborative environment not only enhances technical skills but also fosters communication and project management abilities.

What is a computer science engineer?

Computer Science Engineers are professionals who apply principles of computer science, engineering, and mathematics to design, develop, test, and maintain computer systems, software, and networks. They work on a wide range of technologies, from creating applications and operating systems to improving network security and optimizing hardware performance. Their role often involves problem-solving, programming, and collaborating with other engineers and IT specialists to deliver efficient technology solutions.

What are the key skills and qualifications needed to thrive as a computer science engineer?

To thrive as a Computer Science Engineer, you need a solid background in programming, algorithms, data structures, and computer systems, often supported by a degree in computer science or a related field. Familiarity with languages like Python, Java, or C++, as well as experience using development tools, version control systems (such as Git), and relevant certifications like AWS or Cisco, are highly valued. Strong problem-solving abilities, teamwork, and effective communication help set exceptional engineers apart. These skills are vital for designing, developing, and maintaining reliable software solutions in ever-evolving technical environments.
What are popular job titles related to Computer Science Engineer jobs in New Hampshire? For Computer Science Engineer jobs in New Hampshire, the most frequently searched job titles are:
What job categories do people searching Computer Science Engineer jobs in New Hampshire look for? The top searched job categories for Computer Science Engineer jobs in New Hampshire are:
Computer Science Engineer jobs near you
Infographic showing various Computer Science Engineer job openings in New Hampshire as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 16% Part Time, 1% Temporary, 2% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $118,175 per year, or $56.8 per hour.

Software Engineer, Layer1

Arista Networks

Nashua, NH • On-site

Full-time

Re-posted 6 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
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 400G 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. Over time, as your interests change, coupled with evolving business needs you will have the opportunity to switch from Layer1 to other areas, if you like.
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 + 3 years experience, or MS Computer Science/Electrical Engineering/Computer Engineering + 2 years experience, or Ph.D. in Computer Science/Electrical Engineering/Computer Engineering + 1 years experience, or equivalent work experience
  • Expert knowledge of C or C++ and Python.
  • Knowledge of UNIX or Linux
  • Knowledge of digital communication technologies like modulation and signal encoding schemes is a plus.
  • Understanding of IP networking and/or distributed systems is a plus
  • Experience working with low level hardware components is a plus
  • Applied understanding of software engineering principles
  • Strong problem solving and software troubleshooting skills
  • Ability to design a solution and implement features independently.
  • Ability to work in small teams.

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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