86 principal security engineer jobs at 24 companies in Patterson, CA
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Principal Engineer, Firmware Security
San Jose or Longmont or Folsom
$161k-$318k/yr OnsiteFull Time
10+ YOEBachelor's degree, 10+ years security firmware experience, applied cryptography and post‑quantum expertise, proficiency in C and Python, experience with SoC/FPGA debugging, and knowledge of storage security standards.
C, Python, Rust, JTAG, FPGA, SoC, Caliptra
1w
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Senior Principal Engineer, Offensive Security (2026-345)
San Jose, California, United States
$190k-$240k/yr OnsiteFull Time
12+ YOEBachelor's in CS/CE/EE or related,12+ years offensive security experience,expertise in hardware/firmware/embedded/cloud or AD,proficiency in Python/C/C++/assembly,knowledge of MITRE ATT&CK,track record driving remediation.
Python, C, C++, Assembly, Azure, MITRE ATT&CK, PCIe, CXL, COSMOS
3w
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Principal Security Engineer
Santa Clara, California, United States
$143k-$275k/yr HybridFull Time
6+ YOEBachelor's in CS or related and 6+ years coding experience (C/C++/C#/Java/JavaScript/Python); experience in embedded software, cryptography, secure boot, and secure enclave design; pass Microsoft security screening.
C, C++, C#, Java, JavaScript, Python, Rust, openssl, Mbed TLS, SymCrypt, Microsoft Azure
1mo
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Principal Cyber Security Engineer, Strategy and Architecture
Carlsbad or Reston or Marlborough or Tempe or San Jose or New York City
$230k-$363k/yr HybridFull Time
10+ YOEBachelor's or Master's in a technical field, 10+ years in security/systems/network engineering, strong risk analysis and secure system design experience, hands-on with enterprise security tools, US citizenship, up to 20% travel.
firewalls, IDS/IPS, PKI, SIEM/SOAR, EDR/NDR, CSPM/CNAPP, zero-trust, NIST, ISO 27001, GDPR, CCPA
2mo
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Principal Security Data Engineer, Infrastructure Security Engineering - DGX Cloud
Santa Clara or California or United States
$272k-$431k/yr OnsiteFull Time
15+ YOE15+ years building and operating production data pipelines/lakes at scale; production-grade coding (Python, Go, Scala, SQL); data modeling, distributed systems, and security-minded data handling; Bachelor's or equivalent experience.
Python, Go, Scala, SQL, OCSF, ECS, DCGM, Redfish, BMC, InfiniBand, SIEM, DGX Cloud, LLM
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Principal Security Data Engineer, Infrastructure Security Engineering - DGX Cloud
Santa Clara or California or Canada or United States
$272k-$431k/yr HybridFull Time
15+ YOE15+ years building and operating production data pipelines/lakes, production-grade coding (Python/Go/Scala/SQL), data modeling, distributed data systems, security-minded data handling, analytics enablement; Bachelor's or equivalent.
DGX Cloud, Python, Go, Scala, SQL, SIEM, OCSF, ECS, DCGM, Redfish, BMC, InfiniBand
3w
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Sr. Principal Software Engineer - Network Security - PanOS
Santa Clara or San Francisco or San Jose
$170k-$277k/yr OnsiteFull Time
12+ YOEBachelor's or higher in CS (or equivalent),12+ years engineering experience with senior technical leadership, strong C/C++ on Unix, networking and security knowledge, mentoring and performance optimization experience.
C, C++, Unix, TLS
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Sr. Principal Engineer
Fremont, California, United States
$179k-$257k/yr OnsiteFull Time
15+ YOESenior-level engineering position focused on network engineering and security; extensive hands-on experience with Cisco tech, WAN/LAN, and project leadership.
Cisco, VPN, SDWAN, Python, Ansible
2mo
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Principal Software Development Engineer
Seattle or Santa Clara or Austin or United States
$100k-$235k/yr OnsiteAll Commitments Available
10+ YOE10+ years in software engineering; leadership in design/architecture; distributed systems and security services; Linux/Unix knowledge; microservices; databases.
Linux, Unix, Distributed Systems, Security, KMS, HSMs
1mo
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Principal Software Engineer, Endpoint Platform
Milpitas or Vancouver
$240k-$250k/yr HybridFull Time
2+ YOEPrincipal-level systems software engineer with 2+ years principal experience; strong C++, Rust, or Go; deep OS internals and endpoint security knowledge; experience with EDR/XDR/DLP/PAM/PEDM, ETW/eBPF, AI-assisted development tools, and AI/agent architectures.
C++, Rust, Go, EDR, XDR, DLP, PAM/PEDM, ETW, eBPF, GitHub Copilot, Cursor, Claude Code, Windsurf, ChatGPT, CI/CD, MCP, LLM
3mo
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Principal Full Stack Developer
Santa Clara or San Jose
$117k-$222k/yr HybridFull Time
8+ YOE3+ Mgmt8+ years software development; 3+ years in principal/leadership; full-stack with Node.js and/or Java; cloud-native microservices; AWS/Azure; SQL; Docker/Kubernetes; Agile; security/compliance.
React, TypeScript, Node.js, Java, AWS, Azure, Docker, Kubernetes, SQL, APIs, CI/CD
2mo
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Principal Engineer, Software Development Engineering (Apps)
Milpitas, California, United States
$142k-$235k/yr HybridFull Time
7+ YOE7+ years software engineering, including architecture/leadership; strong Python; experience with AI/ML stacks; distributed systems; Kubernetes; on-prem and cloud; APIs; security.
Python, TypeScript, JavaScript, React, Go, Java, C++, LangGraph, LangChain, LlamaIndex, PyTorch, TensorFlow, Hugging Face, Kubernetes, Docker, PostgreSQL, MongoDB, Elasticsearch, Redis, Valkey, OAuth, OIDC, SSO, RBAC
1w
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Sr. Principal Engineer/ Principal Engineer – Cloud Platform
San Jose, California, United States
HybridFull Time
15+ YOE15+ years software engineering with expertise in distributed systems, microservices, cloud platforms, containerization, databases, DevOps, security, and leadership; bachelor's or master's in CS/CE or equivalent.
AWS, EC2, ECS, EKS, Lambda, RDS, DynamoDB, Azure, GCP, Docker, Kubernetes, Helm, Java, Go, Python, C#, TypeScript, PostgreSQL, MySQL, MongoDB, Cassandra, Redis, Elasticsearch, Terraform, CloudFormation, Jenkins, GitLab CI, GitHub Actions, Prometheus, Grafana, ELK Stack, Kafka, Kinesis, OAuth 2.0/OIDC
2mo
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Senior Principal Engineer, Architecture ASIC / System
Toronto or Ottawa or Burlington or Irvine or Morrisville or Santa Clara or Westborough
$192k-$255k/yr OnsiteFull Time
14+ YOESenior architect with 14+ years in system architecture for SoC; expertise in interconnects, memory hierarchies, power management, security; strong technical leadership.
IP evaluation, IP block, SoC architecture
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Security Engineer, Principal Member of Technical Staff (CA, US, 95131)
San Jose, California, United States
$155k-$236k/yr OnsiteFull Time
10+ YOE10+ years in cybersecurity; incident response, network security, threat intel, vulnerability management; strong communication; onsite 5 days/week.
2mo
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Principal DevOps Engineer (AWS, GitLab)
Valencia or Santa Clara or Arden Hills
$107k-$203k/yr HybridFull Time, Contract
13+ YOEBachelor's in CS/engineering, 13+ years in DevOps/platform engineering, 6+ years with AWS; strong GitLab CI/CD, Terraform, Python, Bash, Kubernetes/EKS experience; experience with secure, compliant delivery and release engineering.
GitLab, GitLab CI/CD, Git, AWS, Terraform, Python, Bash, Kubernetes, Amazon EKS
3mo
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Principal Full Stack Developer (San Jose, CA, US, 95101)
San Jose or Santa Clara
$117k-$222k/yr HybridFull Time
8+ YOE3+ MgmtEight+ years of software development; three+ years in principal/architecture leadership; strong full-stack with Node.js/Java; cloud (AWS/Azure); microservices; Docker/Kubernetes; SQL; Agile/Scrum; security and regulatory awareness.
Node.js, Java, React, TypeScript, AWS, Azure, Docker, Kubernetes, SQL, API design, Microservices, CI/CD, HIPAA, GDPR, FDA
1w
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Principal Software Engineer SD-WAN
San Jose, California, United States
$156k-$315k/yr OnsiteFull Time
10+ YOE10+ years software engineering experience in secure networking, Linux kernel and embedded systems; expertise in IPSec/IKEv2, high-performance networking, cryptography, and system-level C/C++ development.
DPDK, VPP, eBPF, OpenSSL, Intel QAT, AES-NI, StrongSwan, Libreswan, OpenVPN, WireGuard, IPSec, IKEv2, TLS, SSL, Linux, C, C++
2w
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Principal Cloud Security Architect
Fremont, California, United States
$220k-$250k/yr OnsiteFull Time
7+ YOE7+ years in software architecture or cybersecurity, Bachelor’s/Master’s in CS/EE/Software Engineering, hands-on cloud and secure coding experience, familiarity with CI/CD security and embedded-to-cloud communication.
AWS, Azure, GCP, Python, C/C++, Go, Java, Rust, MQTT, REST, gRPC, Terraform, CloudFormation, Kubernetes, Docker, CI/CD
1w
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Principal Software Engineer SD-WAN
San Jose, California, United States
$156k-$315k/yr OnsiteFull Time
10+ YOE10+ years software engineering experience in secure networking, embedded/Linux kernel development, IPSec/VPN, high-performance networking frameworks, cryptography, and system-level C/C++ development.
DPDK, VPP, eBPF, OpenSSL, StrongSwan, Libreswan, OpenVPN, WireGuard, Intel QAT, AES-NI, C, C++
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