45 principal security engineer jobs at 22 companies in Elgin, TX
1mo
Save
Mark Applied
Hide
Principal Security Engineer
Austin, Texas, United States
$175k-$200k/yr RemoteFull Time
8+ YOE8+ years security engineering with technical leadership; hands-on SIEM, AWS/IAM, application security, Kubernetes security, EDR/DLP, vulnerability management; experience with AI/LLM security and mentoring engineers.
DataDog, ELK, SOAR, AWS, M365, Google Workspace, Azure, Kubernetes, EKS, Terraform, Terragrunt, Atlantis, Cloudflare, Buildkite, Wiz, Semgrep, EscapeTech, GitHub Advanced Security, HashiCorp Vault, N8N, Snowflake, Linear, EDR, DLP, SIEM
4w
Save
Mark Applied
Hide
Principal Security Engineer
Redmond or Mountain View or Hillsboro or Austin or Raleigh
$143k-$275k/yr HybridFull Time
6+ YOEBachelor's degree and 6+ years engineering experience with firmware/secure hardware design, strong coding in C/C++/Rust and familiarity with cryptography, secure boot, attestation, and debugging.
C, C++, C#, Java, JavaScript, Python, Rust, Real-Time Operating Systems (RTOS), PCIe, NVME, I3C, I2C, SPI
1mo
Save
Mark Applied
Hide
Principal Security Engineer
Englewood or Austin
HybridFull Time
10+ YOE10+ years in security engineering or architecture with 3+ years as a principal/staff-level IC; hands-on with cloud (AWS, Microsoft Azure), IAM, VPC, Okta/Entra ID/Azure AD, EDR/XDR, SIEM, SOAR; knowledge of NIST CSF, ISO 27001, SOC 2; strong communication and risk-to-engineering delivery.
Okta, Microsoft Entra ID, Microsoft Azure AD, AWS, Microsoft Azure, IAM, VPC, EDR, XDR, SIEM, SOAR, NIST CSF, ISO 27001, SOC 2, FAA, EASA, DoD, CMMC
2mo
Save
Mark Applied
Hide
Principal Engineer, Security Operations
Austin, Texas, United States
HybridFull Time
12+ YOE12+ years cybersecurity with deep expertise in security operations, threat detection, or incident response; hands-on SOC for GCP/AWS; SOC tooling like CrowdStrike, Orca; MIGRATION to MSSP and compliance knowledge; strong analytical and communication skills; CISSP/GCIH/GCFA/CISM/CCFR; Google Cloud certifications preferred.
CrowdStrike, Orca, SIEM, SOAR, log management
2mo
Save
Mark Applied
Hide
Principal Engineer
Austin, Texas, United States
HybridFull Time
15+ YOEBachelor’s degree in Computer Science; 15+ years of relevant experience; expert in C# and SQL; enterprise architecture and systems integration; Agile; English fluency; eligible to work in the U.S.
C#, SQL, APIs, Cloud, Security
2mo
Save
Mark Applied
Hide
Principal Mechanical Engineer
Austin, Texas, United States
OnsiteFull Time
10+ YOE10+ years in mechanical engineering; degree; design, analysis, hardware development; 3D CAD; security clearance eligibility.
Siemens NX, SolidWorks, Creo
1mo
Save
Mark Applied
Hide
Lead Principal Firmware Engineer
Nashville or United States or San Francisco or Austin or Seattle
$146k-$306k/yr OnsiteFull Time
10+ YOE10+ years firmware engineering experience; hands-on BIOS/BMC/UEFI firmware; knowledge of secure boot/TPM, server firmware stacks and standards; strong communication and cross-team leadership skills.
EDKII, OpenBMC, Redfish, IPMI, PLDM, UEFI, ACPI, PCIe
23h
Save
Mark Applied
Hide
Principal Infrastructure Security Engineer
Austin, Texas, United States
OnsiteFull Time
8+ YOE8+ years designing, scaling, and maintaining secure SaaS infrastructure in high-availability cloud-native environments, ideally AWS, with expertise in SDLC security, threat modeling, proxies, mTLS, rate limiting, and zero-trust models.
AWS, Envoy, Nginx, SDLC, mTLS
2mo
Save
Mark Applied
Hide
Principal Software Engineer (Platform Team)
Bastrop or Hawthorne or Palo Alto or Redmond or Brownsville or Sunnyvale
HybridFull Time
7+ YOE7+ years building and scaling production AI platforms; 9+ years in lieu of degree; design and operate large-scale AI/ML platforms; Docker/Kubernetes; security-minded.
Docker, Kubernetes, Multi-Cloud, Frontier Model Providers, Python, CI/CD, Security tooling
1mo
Save
Mark Applied
Hide
Principal Manufacturing Engineer
Melbourne or Dallas or Austin or Cypress
OnsiteFull Time
8+ YOEBachelor’s degree in engineering with 8+ years of progressively complex engineering experience (or equivalent), U.S. citizenship, active or obtainable DOD security clearance, specialties in production/industrial/welding/tooling/testing/robotics possible.
3w
Save
Mark Applied
Hide
The Principal Test Engineer - Security and Provisioning
Austin, Texas, United States
$250k-$338k/yr HybridFull Time
10+ YOE10+ years in semiconductor manufacturing/test with hands-on Advantest 93K, SmarTest 7/8, eFuse/OTP programming, provisioning flows, fuse readback/verify, secure debug, and cross-functional collaboration.
Advantest 93K, SmarTest 7, SmarTest 8, STIL, JTAG, Caliptra
1mo
Save
Mark Applied
Hide
Principal Communication Engineer II
Austin, Texas, United States
OnsiteFull Time
11+ YOEBachelor's in Electrical Engineering, 11+ years space communications experience, strong communications theory and RF expertise, FPGA and vector processing experience, familiarity with NR NTN, DVB-S2x, CCSDS, Python and C++, optical communications, classified/red-black experience, ability to hold security clearance.
FPGA, Python, C++, NR NTN, DVB-S2x, CCSDS
2w
Save
Mark Applied
Hide
Principal Software Engineer - U.S.
Austin, Texas, United States
OnsiteFull Time
15+ YOE15+ years experience building data-intensive distributed systems; expertise with big data technologies, DDD, reliability, CI/CD, cloud providers, APIs, and security-minded design.
ElasticSearch, NoSQL Stores, Kafka, Columnar Databases, DataFlow, Pipeline Systems, Graph DataStores, Enterprise Message Bus, Terraform, Jenkins, CodePipeline, Docker, CI/CD, AWS, Azure, GCP
2mo
Save
Mark Applied
Hide
Principal Firmware Engineer (Austin, TX, US, 78753)
Austin, Texas, United States
$174k-$208k/yr OnsiteFull Time
10+ YOE10 years’ industry experience; Bachelors or higher in a relevant field; extensive C/C++; multiple languages; secure-element/credential know-how; ISO standards familiarity; low-level ML; IP exposure.
C, C++, Python, C#, Typescript, Java, Kotlin, Swift, Go, CUDA, Secure-Element, Secure-Credential, ISO-14443, ISO-7816, cryptography, embedded systems, Linux
1w
Save
Mark Applied
Hide
Principal Mechanical Engineer - Sign On Bonus Available
Austin, Texas, United States
$116k-$197k/yr HybridFull Time
6+ YOEBachelor's in Mechanical Engineering, 6+ years (or 4+ with MS) designing and testing high-reliability embedded systems; hands-on lab experience; eligible for DOD security clearance; strong analytical and communication skills.
ANSYS Workbench/Mechanical, PTC Creo, MATLAB/Simulink, Siemens NX, ANSYS Icepak
2d
Save
Mark Applied
Hide
Senior Principal Platform Architect
Austin, Texas, United States
OnsiteFull Time
20+ YOEMaster's or PhD in EE/CE/CS,20+ years platform architecture experience in servers/switches/data center infrastructure; expertise in high-speed interconnects, platform management standards, security and thermal/power orchestration.
UALink, NVLink, OAM/UBB, PCIe Gen6, PCIe Gen7, CXL, Ultra Ethernet, Redfish, IPMI, MCTP, SPDM, OpenBMC, PLDM, UEFI, ACPI
1mo
Save
Mark Applied
Hide
Principal AI Software Engineer
Austin, Texas, United States
OnsiteFull Time
6+ YOE6+ years production Python experience, 3+ years deploying and operating LLM-based solutions, experience with AI coding assistants and GenAI infrastructure, strong architecture, security, and platform expertise.
Python, GitHub Copilot, Cursor, Claude Code, MCP, A2A, LLM, CI/CD, GenAI
2mo
Save
Mark Applied
Hide
Principal Product Manager - Threat Detection Engine and Content (Hybrid)
Arlington or New York or Austin or Sunnyvale or Redmond
$160k-$250k/yr HybridFull Time
5+ YOE5+ years in product management for detection content, SIEM, XDR, cloud security; large-scale distributed systems; strong communication; willing to travel up to 20%; onsite 1-3 days/week; BA/BS, Master’s desirable.
Distributed Systems, Threat Detection, Security Analytics, Cloud Security, XDR, SIEM
1w
Save
Mark Applied
Hide
Développeur(se) principal(e), Opérations de sécurité et intervention en cas d’incident / Senior Security Operations and Incident Response Engineer
Austin or Montreal
$160k-$272k/yr RemoteFull Time
Hands-on SecOps/Incident Response experience, detection engineering, threat hunting, cloud (AWS/GCP/Azure) knowledge, scripting/APIs for automation, mentoring experience, and strong investigative and communication skills.
AWS, GCP, Azure, APIs
2mo
Save
Mark Applied
Hide
Principal SOC Architect, AI Accelerators (Multiple Locations)
San Diego or Hillsboro or Santa Clara or Austin or Raleigh
$126k-$230k/yr OnsiteFull Time
10+ YOE10+ years HW design/commercialization experience, 3+ years datacenter product experience, deep knowledge of datacenter security, RAS, virtualization, PCIe and Ethernet protocols; degree in engineering/science required.
Explore Jobs