Software Engineer Jobs in New Hampshire, United States

SmartCop, part of Harris Computer's Frontline portfolio, delivers integrated public safety software for law enforcement and first responders. The Software Engineer builds reliable, scalable applications for SmartCop systems, collaborates across the software development lifecycle, and leverages AI‑assisted development tools to improve code quality and testing.

Arista’s BIOS team develops and maintains the CPU firmware, BIOS and boot loader software for all Arista products. The engineer designs, implements, and validates low‑level CPU software, creates automated C/C++/Python tests, and collaborates with hardware engineers and vendors to qualify new CPUs.

CAMP Systems is the trusted leader in aircraft compliance and health management, serving the global business aviation industry with platforms supporting over 20,000 aircraft and 33,000 engines. As a Senior Software Engineer on an Agile Scrum team in Merrimack, NH, you will design, build, scale, and maintain enterprise-grade web applications using .NET and Angular, working hands-on with product managers, designers, and other developers.

Peraton Labs cybersecurity research team develops advanced defenses and AI-driven analysis to protect mission-critical systems. The Software Engineer designs and implements secure software, conducts vulnerability research, and integrates modern networking and cloud technologies.

Platform software team at Arista Networks builds diagnostic software to validate high‑speed digital boards and ASICs for data‑center networking products. The role designs, implements, and tests production‑grade diagnostics, performs root‑cause analysis of failures, and supports new platform features while coordinating with hardware engineers and customers.

Layer1 team at Arista Networks builds software that manages the physical layer, ensuring stable and reliable connectivity. The role designs and implements control software for connectors and optics, creates telemetry tools, and collaborates with hardware and optics teams to define standards.

As a Software Engineering Intern at Trimble, you will collaborate in an agile environment to write clean code and help deliver technology that drives global industries forward. You will develop, test, and maintain high-quality software features aligned with core product requirements, collaborate with agile engineering teams on complex, multi-dimensional software projects, and partner with product managers and developers to gather feedback during beta releases and refine user features.

Platform team at Arista Networks builds the foundation for networking ASICs and supporting infrastructure, focusing on high‑speed PCIe communication. The PCIe Software Engineer writes and optimizes code that manages PCIe links, modifies Linux PCI drivers, and develops userspace software bridging ASICs, FPGAs, and PCIe bridges.

As a Software Engineer Intern, you will join the IT Department at Concord Insurance Group in Bedford, NH, working on projects and tasks designed by senior leadership. You will create technical specifications, develop high-quality code to meet business requirements, participate in peer code reviews, assist in application testing, and produce and maintain technical documentation.

EFI R&D Software Engineer on the Print Solutions team, building and evolving unified printer software platforms. Develops C++/C# applications, integrates with printer control systems, cameras, and hardware, and supports legacy and new products.

Network Systems group at Arista Networks builds software that controls hardware components on switches and routers, enabling efficient operation of data center and campus networking. The engineer develops and maintains features in C, C++ and Python, creates automated tests, and collaborates with hardware and manufacturing teams to bring new hardware to market.

Arista BIOS team develops and maintains CPU firmware, BIOS and boot loader software for Arista networking products. The role designs, implements, and validates low‑level CPU software, creates automated tests in C, C++ and Python, and collaborates with hardware engineers and vendors to qualify new CPUs.

CVS Health Digital is seeking a Staff Software Development Engineer to serve as both a Technical Lead and Individual Contributor on a high-energy team reinventing pharmacy and health care in the digital world. Day-to-day work includes designing and implementing scalable solutions, creating Proof of Concepts, driving delivery excellence, partnering with business and IT leaders to build digital assets, and providing expert-level support and RCA for complex issues.

The Senior Software Engineer/Developer role at Fidelity Technology Group, LLC develops microservices, integrations, and backend services using divisional technology stacks and industry-standard development patterns. You will build and enhance automated and manual test suites, create and maintain CI/CD pipelines, and design, develop, and maintain UI and API components while investigating and resolving technical issues across the full stack.

Arista’s Linux Kernel team develops and maintains the Linux kernel in EOS, integrating upstream kernel updates and designing new kernel features. The engineer tracks kernel developments, builds EOS kernel features and tests using C, C++ and Python, and collaborates with hardware engineers, vendors, and the kernel community to qualify CPUs and NICs.

CVS Health is seeking a Lead Director of Software Engineering to drive technical strategy across a multi-team engineering organization of 50–150+ engineers, setting architectural standards and embedding LLMs, generative AI, agentic workflows, and ML-powered automation into production systems. The role partners with Product, Data Engineering, and healthcare business leaders to translate business strategy into engineering bets, own delivery at velocity, and advocate for the right engineering inves

Network Systems team at Arista Networks builds software that controls hardware components such as sensors, fans, power modules, storage devices, FPGAs and NICs. The Lead Software Engineer designs and implements novel features, creates abstractions for hardware drivers, and leads cross‑functional projects from definition to deployment while mentoring junior engineers.

Platform team at Arista Networks builds the foundation for networking ASICs and supporting infrastructure, focusing on high‑speed PCIe communication. The Senior/Lead Software Engineer designs, implements, and validates PCIe drivers, firmware, and userspace software, collaborating with hardware, diagnostics, and software engineers to optimize bandwidth and reliability.

Parallel Wireless is reimagining mobile networks with innovative, energy-efficient Open RAN solutions. Join us as we lead the future of telecommunications, driving innovation through green and sustainable networks.