17 principal software engineer jobs at 2 companies in Walpole, NH
3mo
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Principal Software Engineer
Westlake or Merrimack
HybridFull Time
4+ YOEBachelor’s degree preferred; 4+ years software engineering; strong Python/Java, AWS, CI/CD, Spring Boot, SQL; experience with automation, AI-assisted code, and mentoring.
Python, Java, Spring Boot, AWS, EKS, Docker, REST, Maven, JSON, Tomcat, Swagger, Message Queues, Concourse, Git, Jenkins, Artifactory, Veracode, uDeploy, Selenium, Cucumber, FitNesse, Oracle, SQL
2mo
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Principal Software Engineer
Westlake or Merrimack
OnsiteFull Time
8+ YOEBachelor's degree and 8+ years of software engineering experience. Requires Python or Java, cloud and containerization experience, CI/CD, automation frameworks, SQL, and strong analytical communication skills.
Python, Java, Spring Boot, AWS, EKS, Docker, Spring, REST, Web Services, Maven, JSON, Apache Tomcat, Swagger, Message Queues, Selenium, Cucumber, FitNesse, SQL, Oracle, Concourse, GIT, Jenkins, Artifactory, Veracode, uDeploy
3w
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Principal Software Engineer/Developer
Merrimack, New Hampshire, United States
OnsiteFull Time
3+ YOEBachelor's degree plus 5 years or master's degree plus 3 years of software engineering experience; expertise in Java, Spring Boot, Angular, cloud applications, APIs, databases, CI/CD, and DevOps tools.
Java, Spring Boot, Angular, Node.js, JIRA, SQL, NoSQL, Snowflake, CloudFormation, Jenkins, Shell Scripting, Datadog, Splunk, Git, uDeploy, Sonar
1mo
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Principal Software Engineer
Merrimack, New Hampshire, United States
OnsiteFull Time
10+ YOEBachelor's degree or higher in a quantitative or computational field, 10+ years building complex software, full-stack development, testing, stakeholder communication, and development team leadership experience.
Angular, Java, Spring Boot, AWS, Kubernetes, EKS, Agile
3d
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Principal Software Engineer (Sign On Bonus Available)
Merrimack, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
10+ YOEBachelor’s degree or equivalent experience, 10+ years of experience, active Secret clearance, C/C++ embedded development, software testing, Agile/DevSecOps, CI/CD, and technical team leadership.
C++, Linux, Python, Jira, Confluence, Bitbucket, Git, CI/CD
3w
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Principal Software Engineer/Developer
Merrimack, New Hampshire, United States
OnsiteFull Time
3+ YOEDesign, develop, test, and maintain enterprise Java/Spring Boot applications and APIs; experience with cloud, CI/CD, observability, and mentoring; Bachelor's or Master's in related field with relevant experience.
Java, Spring Boot, Angular, Node JS, JIRA, SQL, NoSQL, Snowflake, CloudFormation, Jenkins, Shell Scripting, Datadog, Splunk, Git, uDeploy, Sonar, RESTful web services
1mo
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Principal Software Engineer, Contact Center Digital Engagement Services
Durham or Merrimack or Westlake
OnsiteFull Time
10+ YOERequires 10+ years software engineering, 5+ years Java and Spring Boot, complex backend architecture, real-time communications, cloud-native systems, AI tools, secure engineering, mentoring, and a master's degree or equivalent experience.
Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, Rocket.Chat, GitHub Copilot, Claude Code, OpenAI Codex, Java, Spring Boot, WebSockets, Server-Sent Events, CI/CD, Microsoft?
2w
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Senior Principal Software Engineer - RFCM Development
Manchester, New Hampshire, United States
$123k-$209k/yr OnsiteFull Time
8+ YOESecret-clearable candidate with Bachelor's in CS/CE or related and 8+ years' experience, deep EW countermeasures knowledge, C++ expertise, service-based architecture, Git/Visual Studio experience, team leadership, lab integration, and testing skills.
Git, Visual Studio, Visual Studio Code, C++
2w
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FAST Labs Principal Software Engineer - Release Engineering & DevSecOps
Merrimack, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
4+ YOEActive Top Secret clearance, bachelor's degree in a technical field, and 4+ years in build, release, DevOps, or DevSecOps engineering. Requires C++, Linux, CI/CD, containers, IaC, Python, Git, and package management experience.
C++11, Linux, Jenkins, GitLab CI, Azure DevOps, Meson, CMake, Conan, RPM, DEB, SAST, SBOM, Docker, Podman, Kubernetes, Terraform, Ansible, DORA, Python, uv, pip, Git, MATLAB, Chef, Puppet, Nexus, Harbor, Golang, SPDX, CycloneDX, NIST 800-53
2w
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FAST Labs - Senior Principal Software Engineer (up to $20K Sign On Bonus)
Merrimack, New Hampshire, United States
OnsiteFull Time
6+ YOEBachelor's degree in computer science, computer engineering, or related field; 6+ years software development; advanced C++11, Linux, and object-oriented design experience; active Secret clearance and U.S. citizenship required.
C++, Python, MATLAB, Kubernetes, Harbor, Helm, RTOS, FPGA, GPU, UART, I2C, SPI, CAN, CI/CD, Podman, Docker, OpenCL, CUDA, Linux, DSP, MBSE
2w
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FAST Labs - Principal Software Engineer (up to $20K Sign On Bonus)
Merrimack, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
4+ YOEBachelor's degree in a technical field, 4+ years of software development, C++11+, object-oriented design, Linux, and active Top Secret clearance; U.S. citizenship required.
C++, Python, MATLAB, Kubernetes, Harbor, Helm, Podman, Docker, Linux, OpenCL, CUDA, UART, I2C, SPI, CAN, FPGA, GPU, RTOS, CI/CD, DevSecOps
3mo
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Principal Test Engineer
Nashua or Hudson or Merrimack or Manchester
$116k-$197k/yr HybridFull Time
6+ YOEBachelor's degree in engineering or related field, ability to obtain Secret clearance, experience developing automated test software and hardware (NI TestStand, RF test automation), programming experience (C/C++, C#, Python), and several years of engineering experience.
National Instruments Test Stand, NI Test Stand, LabVIEW FPGA, VHDL, Verilog, C, C++, C#, VB, Python, Keysight PNA-X, Keysight MXA, Keysight PSA, Keysight CXA, PXI, FlexRIO, JTAG, Jira, Bitbucket, Confluence, Git, Tortoise Git, UNIX, Linux, VxWorks, BASH, VMWare, CREO, Cadence, AutoCAD
2w
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FAST Labs - Senior Principal II Software Engineer - C++ CUDA ($25K Sign-on Bonus)
Merrimack, New Hampshire, United States
$147k-$249k/yr OnsiteFull Time
6+ YOEBachelor's degree in a technical field, active Top Secret clearance, 6+ years of software development, expert C++ and CUDA skills, Linux experience, and strong leadership and collaboration abilities.
C++, CUDA, Linux, Python, MATLAB, OpenCL, DevSecOps, Continuous Integration/Continuous Deployment (CI/CD), Podman, Docker, Digital Engineering, Model-Based Systems Engineering (MBSE)
2mo
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FAST Labs - Senior Principal II Software Engineer (up to $20K Sign On Bonus)
Merrimack, New Hampshire, United States
$147k-$249k/yr OnsiteFull Time
6+ YOERequires Top Secret clearance, Bachelor's in CS/CE, 6+ years software development, expert C++11 and Linux experience, knowledge of embedded/real-time systems, DevSecOps/CI/CD, containerization, and strong leadership and communication skills.
C++11, C++, Python, MATLAB, Kubernetes, Harbor, Helm, RTOS, FPGA, GPU, SoC, UART, I2C, SPI, CAN, DevSecOps, CI/CD, Podman, Docker, OpenCL, CUDA, Linux, MBSE
2w
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FAST Labs - Senior Principal II Software Engineer (up to $20K Sign On Bonus)
Merrimack, New Hampshire, United States
OnsiteFull Time
6+ YOEActive Top Secret clearance, bachelor's degree in a technical field, and 6+ years of software development experience with expert C++ and Linux skills; U.S. citizenship required.
C++, Python, MATLAB, Kubernetes, Harbor, Helm, RTOS, FPGA, GPU, UART, I2C, SPI, CAN, DevSecOps, Continuous Integration/Continuous Deployment (CI/CD), Podman, Docker, OpenCL, CUDA, Linux, DSP, Digital Engineering, Model-Based Systems Engineering (MBSE)
3mo
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Principal Test Engineer
Nashua or Hudson or Merrimack or Manchester
$116k-$197k/yr HybridFull Time
4+ YOEBachelor's degree with minimum 4 years experience (typical 6+); proficiency with NI TestStand and RF test methodologies; experience developing automated test software and hardware; ability to obtain Secret clearance; U.S. person/citizen required.
National Instruments Test Stand, NI Test Stand, NI Test Stand libraries, National Instruments FlexRIO, LabVIEW FPGA, VHDL, Verilog, PNA-X, MXA, PSA, CXA, PXI, JTAG, C, C++, C#, VB, Python, Jira, Bitbucket, Confluence, Git, Tortoise Git, UNIX, Linux, VxWorks, BASH, VMWare, CREO, Cadence, AutoCAD
1w
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Principal Full Stack Engineer
Merrimack, New Hampshire, United States
OnsiteFull Time
8+ YOEBachelor’s degree in a relevant technical field and 8+ years of software design, development, and performance testing experience. Requires Java, Spring, Python, Linux, cloud technologies, and performance engineering expertise.
Java, Spring, Python, Linux, jMeter, FIX protocol
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