44 principal security engineer jobs at 16 companies in Dover, NH
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Principal Systems Security Engineer (Cyber) - P4 (Onsite)
Tewksbury or Marlborough or Woburn
$108k-$205k/yr OnsiteFull Time
8+ YOEBachelor's in STEM with ~8 years' relevant experience, active transferable Secret clearance and U.S. citizenship required, experience in system/cyber security engineering and NIST RMF.
NIST Risk Management Framework (RMF), Splunk, Python, Bash, Red Hat Enterprise Linux, Microsoft Windows, Cisco, SIEM, HIDS, NIDS, Multi-Factor Authentication (MFA), DoDI 8570.01-M
2mo
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Principal Security Engineer -DLP AI Security Automation
Johnston or Boston or Iselin or Pittsburgh or Manchester
$145k-$180k/yr HybridFull Time
8+ YOEBachelor's in CS/Cybersecurity or equivalent, 8+ years info security (4+ years DLP/CASB/cloud protection), hands-on DLP platform expertise, SIEM/SOAR integrations, AI/automation workflows, knowledge of GLBA/PCI/SOX/GDPR, scripting experience.
DLP, CASB, DSPM, SSE, SIEM, SOAR, Python, PowerShell, KQL, AWS, Azure, GCP
3mo
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RF Engineer Principal
Hudson or Phoenix
OnsiteFull Time
7+ YOEBS in Electrical Engineering; 7 years in high reliability aerospace/defense; technical leadership; RF/microwave testing; RF simulations; travel ~10%; active security clearance.
Microwave Office, AWR, ADS, HFSS, MATLAB
1mo
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Principal Optics Engineer
Billerica, Massachusetts, United States
$146k-$187k/yr HybridFull Time
8+ YOEU.S. citizen with Bachelor’s in engineering (master/PhD preferred); 8+ years engineering experience with ≥6 years in optics; experience with motion-tracking AR integration, SDLC knowledge, strong communication and organizational skills; eligible for security clearance.
2mo
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Principal Systems Engineer
Merrimack, New Hampshire, United States
OnsiteFull Time
7+ YOERequires systems engineering experience including requirements management (DOORS), system-level design, modeling & simulation, verification/validation, test planning, cost estimating, and mentoring; Master\u0002s+7yrs or Bachelor\u0002s+9yrs and eligible for security clearance.
DOORS, Microsoft Office, Microsoft Excel, Microsoft Projects, MATLAB, Visio, CAMEO Enterprise Architecture
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Principal Cloud Developer
Andover or Houston or Durham or Fort Collins or Roseville
$152k-$349k/yr HybridFull Time
10+ YOEBachelor's degree in CS/engineering/IS,10+ years experience,proficiency in Python/Java/Golang/JavaScript,cloud security and systems design expertise,strong communication and mentoring skills.
Python, Java, Golang, JavaScript
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Principal Cloud Developer
Andover or Houston or Durham or Fort Collins or Roseville
$152k-$349k/yr HybridFull Time
10+ YOEBachelor's degree in CS/engineering,10+ years experience,expertise in software design,programming (Python,Java,Golang,JavaScript),cloud security and architecture,mentoring and technical leadership.
Python, Java, Golang, JavaScript
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Principal Cloud Developer
Andover or Houston or Durham or Fort Collins or Roseville
$152k-$349k/yr HybridFull Time
10+ YOEBachelor's in CS/engineering/IS (or related),typically 10+ years experience, strong programming in Python/Java/Golang/JavaScript, cloud security and systems design expertise, leadership and mentoring experience.
Python, Java, Golang, JavaScript
3mo
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Principal Mechanical Engineer, Development
Merrimack, New Hampshire, United States
$118k-$201k/yr OnsiteFull Time
4+ YOEBachelor's in Mechanical Engineering required; 4+ years (or 2+ with MS) designing, testing, and troubleshooting high-reliability mechanical systems. Must be eligible for DOD security clearance and have strong hands-on lab and analytical skills.
ANSYS Workbench/Mechanical, PTC Creo, MATLAB/Simulink, Siemens NX, ANSYS Icepak
1mo
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Principal Engineer – Autonomous Systems
Gulfport or Durham or Baton Rouge or Columbia
OnsiteFull Time
10+ YOEU.S. citizen able to obtain DoD Secret clearance; deep autonomous systems experience; proficiency in modern software engineering and production languages; ability to secure and shape S&T funding.
Git, Python, C++, Rust, PyTorch, TensorFlow, Gazebo, Isaac Sim, MOOS-IvP
2w
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Principal Site Reliability Engineer (Hybrid)
Merrimack or San Diego
$118k-$201k/yr HybridFull Time
4+ YOERequires 4–6+ years of site reliability engineering, Juniper networking, cloud technologies, automation, storage, virtualization, and security clearance eligibility; Security+ required or obtainable within 90 days.
Juniper, Ansible, Helm Charts, NFS, JDFS, Ceph, S3, VMware, Open Stack, Azure Stack, Kubernetes, Terraform
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Principal FPGA Engineer
Ashburn or Boston or Nashua or Tewksbury
$144k-$192k/yr OnsiteFull Time
10+ YOEBachelor's in EE/CE, 10+ years FPGA hardware development, strong RTL skills (SystemVerilog/Verilog/VHDL), FPGA toolflow experience, lab test/debug proficiency, mentorship/leadership experience, US citizenship required; active security clearance preferred.
ModelSim, Questa, Xilinx ISE, Vivado, Vivado IP Integrator, SystemVerilog, Verilog, VHDL, Zynq MPSoC, Versal Adaptive SoC, UltraScale+, Microchip Libero SoC, Intel Quartus, ChipScope, TCL, oscilloscopes, logic analyzers
2mo
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Principal Electrical Engineer (645)
Bedford, New Hampshire, United States
OnsiteFull Time
15+ YOEBSEE or equivalent with >15 years electronic hardware design experience; analog/digital mixed-signal design, FPGA electrical design, power conversion, PCB layout, lab troubleshooting, strong communication; U.S. citizenship and ability to obtain security clearance required.
Altium
1mo
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Electronic Support Measures Principal Systems Engineer
Nashua or Manchester or Burlington or Lexington
$118k-$201k/yr OnsiteFull Time
5+ YOERequires experience with ESM/RWR/SIGINT, systems engineering across development lifecycle, DSP, RF/receiver design, active US security clearance (Top Secret), bachelor’s degree or equivalent and 5+ years' experience.
MagicDraw
2w
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Principal Electrical Engineer (Sign On Bonus Available)
Nashua, New Hampshire, United States
HybridFull Time
6+ YOEBachelor's in Electrical Engineering and 6+ years (4+ with MS) designing and testing high-reliability embedded systems; FPGA/VHDL, mixed-signal, power design, test lab experience, and ability to obtain DOD security clearance.
VHDL, FPGA, Cadence, DDR, QSPI, PCIe, Ethernet, JESD 204, I2C, JTAG, MIL-STD-1553, MIL-STD-704, MIL-STD-461A, AS9145
3d
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Principal Software Engineer
Columbus or Plano or Indianapolis or Boston or Portsmouth
HybridFull Time
8+ YOERequires 8+ years of software engineering experience, enterprise architecture and technical leadership, distributed systems, cloud-native development, security, testing, DevOps, and a technical or business degree or equivalent experience.
JavaScript, TypeScript, React, Node.js, Next.js, Java, Micro Frontends, HTML/CSS, AWS, CDK, GitHub Actions, OAuth 2.0, OpenID Connect, Playwright, JMeter, Datadog, Splunk, Microsoft Bridgeway
3w
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Senior Principal, Platform Security Architect
Andover, Massachusetts, United States
$169k-$253k/yr HybridFull Time
12+ YOE12+ years in software architecture/systems engineering/cybersecurity, 6+ years designing cloud/IoT security, active experience with Azure/AWS/GCP, threat modeling, IAM (OAuth2, PKI), DevSecOps, and cybersecurity standards.
Azure, AWS, Google Cloud, Kubernetes, OAuth2, PKI, Modbus, OPC-UA, MQTT, IEC 62443, SAFe, DevSecOps
2d
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Principal IT Infrastructure Engineer
United States or Wakefield
RemoteFull Time
12+ YOEBachelor's degree in a related field, 12+ years of experience, U.S. citizenship, industry certifications, and expertise in enterprise infrastructure, cloud, networking, security, virtualization, and automation.
NetGate, PFSense, Ubiquiti, Cisco, Palo Alto, SonicWall, Windows Server, Azure, VEEAM, AvePoint, Zerto, SIEM, PowerShell, Python, Terraform, SQL Server, VMware, Hyper-V, AWS, Wi-Fi, VPN
2mo
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Principal Software Engineer, Contact Center Digital Engagement Services
Durham or Merrimack or Westlake
OnsiteFull Time
10+ YOE10+ years engineering experience, 5+ years with Java and Spring Boot, experience designing backend architecture, real-time communication tech, cloud-native microservices, secure engineering, and mentoring; Master’s degree preferred or equivalent experience.
Java, Spring Boot, Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, Rocket.Chat, IVR, WebSockets, Server-Sent Events, CI/CD, GitHub Copilot, Claude Code, OpenAI Codex
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?
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