42 principal security engineer jobs at 15 companies in Gainesville, TX
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Principal Systems Engineer
Plano, Texas, United States
HybridFull Time
14+ YOEMastery in requirements engineering, systems integration, V&V, MBSE; 14+ years systems engineering experience; bachelor’s in engineering (master’s preferred); active U.S. security clearance with Top Secret/SCI eligibility.
DOORS, Cameo, MATLAB, Open Mission System, Universal Command and Control Interface
2mo
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Principal Security Engineer
Johnston or Dallas or Irving or Plano or Franklin or Iselin or Boston or Providence
$140k-$180k/yr OnsiteFull Time
10+ YOE10+ years security experience across domains, BA/BS in IT security or computer science, knowledge of IAM, DLP, vulnerability management, pen testing, cloud security, scripting (Python, PowerShell), Active Directory, strong written/verbal communication and risk-based decision-making.
Python, PowerShell, Active Directory, Linux, Windows, OWASP, DLP, Anti-Virus, Firewall, Generative AI
3mo
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Principal Engineer - Stablecoin
Jersey City or Seattle or Plano or San Francisco or Charlotte
$157k-$230k/yr HybridFull Time
Experience designing and building secure, scalable financial blockchain apps and smart contracts; multi-cloud, multi-region; cloud providers (AWS, GCP, Azure); web3 protocols; Solidity/Rust; cryptography; DeFi; code reviews and security analysis; integration with external systems.
Solidity, Rust, Web3, Truffle, Hardhat, Remix, Web3.js, Ethers.js, Terraform, AWS, GCP, Azure
1mo
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Principal AI Security Platform & Harness Engineer
Jersey City or Coppell or Tampa
$95k-$180k/yr HybridFull Time
8+ YOE8+ years related experience; bachelor's preferred; strong Python and distributed systems background; experience with LLM integrations, Docker, Kubernetes/OpenShift, AWS, CI/CD tooling, and application security concepts.
Python, Java, Claude, OpenAI, Bedrock, Docker, Kubernetes, OpenShift, AWS, Git, Bitbucket, Jenkins, Jira
1mo
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Principal Systems Security Engineer – Anti-Tamper/Program Protection - P4 (Onsite-McKinney, TX)
McKinney, Texas, United States
$108k-$205k/yr OnsiteFull Time
8+ YOEU.S. citizen with active transferable Secret clearance, typically Bachelor's in STEM and 8+ years experience in system security engineering, anti-tamper, embedded security, DoD programs, and CPI/threat modeling.
FPGA
3d
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Cybersecurity IAM Senior Principal Engineer
Plano, Texas, United States
$124k-$207k/yr OnsiteFull Time
15+ YOEBachelor’s degree and 15+ years in cybersecurity with IAM expertise; 7+ years in principal, lead, or senior architecture roles. Requires cloud, AI security, and IAM technology expertise.
AWS IAM, AWS Identity Center, Microsoft Entra ID, OAuth 2.0, OpenID Connect (OIDC), SAML, Zero Trust, LLMs, AWS Bedrock, Amazon AgentCore, Azure AI, Saviynt, SailPoint, OWASP Top 10 for LLM Applications, SPIFFE/SPIRE
4d
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Cybersecurity IAM Senior Principal Engineer
Plano, Texas, United States
$124k-$207k/yr OnsiteFull Time
15+ YOEBachelor’s degree and 15+ years in cybersecurity with IAM expertise, including 7+ years in principal, lead, or senior architecture roles. Requires cloud, AI security, IAM, and Zero Trust expertise.
AWS IAM, AWS Identity Center, Microsoft Entra ID, OAuth 2.0, OpenID Connect (OIDC), SAML, Zero Trust Architecture, AWS Bedrock, Amazon AgentCore, Azure AI, Saviynt, SailPoint, OWASP Top 10 for LLM Applications, SPIFFE, SPIRE
3mo
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AI Solutions Principal Engineer
Plano, Texas, United States
$111k-$185k/yr OnsiteFull Time
8+ YOEBachelor’s or Master’s in CS/Engineering/IS/Data AI; 8–12 years in solution architecture; strong API, AI, security, and production readiness experience.
Python, Java, C++, Langchain, CrewAi, MCP, A2A, AWS, Azure, Google Cloud
6d
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Principal Architect, Security Architecture
Conshohocken or Carrollton
OnsiteFull Time
8+ YOEBachelor's degree or equivalent experience and 8+ years in IAM, cybersecurity architecture, security engineering, or infrastructure architecture. Requires enterprise IAM design, authentication standards, architecture governance, and stakeholder influence.
Microsoft Entra ID, Active Directory, OAuth 2.0, OpenID Connect (OIDC), SAML, SCIM, Kerberos, JWT, FIDO2, DevSecOps
3w
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Principal Software Engineer/Developer
Westlake, Texas, United States
OnsiteFull Time
3+ YOERequires 3–7 years of software engineering experience depending on education, with expertise in cloud-native applications, Java, microservices, AWS, REST APIs, DevOps, databases, streaming, and automated testing.
SaaS, Docker, Elastic Kubernetes Service (EKS), Java, REST, Kafka, Amazon Web Services (AWS) SQS, Active MQ, Jenkins Core, Git, Artifactory, Jira, Unit, Component, Functional, Performance, Security, AWS, Azure, IKS, Pivotal Cloud Foundry (PCF), HTML5, Angular, JavaScript, Kubernetes, Agile, Spring Boot, MyBatis, Hibernate, Java Persistence API (JPA), Spring Batch, Mule ESB, IBM DataPower, Redshift, AWS Lambda, API Gateway, DynamoDB, S3, Oracle, MongoDB, Cassandra, RabbitMQ, SQS, SNS, Kinesis, Apache, Camel, JUnit, Protractor, Chaos Mesh, AWS KMS, Secrets Manager, Cognito
2mo
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Principal Project Engineer - Technical Export Focal (39763)
Greenville or Plano
OnsiteFull Time
12+ YOE12+ years engineering experience (or 16 with no degree) with export licensing experience, ability to obtain U.S. security clearance, and experience coordinating cross-functional stakeholders for DCS/FMS programs.
2mo
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Principal Network Engineer
Westlake, Texas, United States
OnsiteFull Time
7+ YOE7+ years network engineering experience with data center segmentation, micro-segmentation, and Zero Trust; hands-on with Illumio, Guardicore (Akamai), Cisco Secure Workload/Tetration, enterprise networking vendors, cloud, Kubernetes, scripting, ServiceNow, and security tooling.
Illumio, Guardicore (Akamai), Cisco Secure Workload, Tetration, Cisco, HP, Arista, Palo Alto, Check Point, Juniper, TCP/IP, SIEM, SOAR, CMDB, ServiceNow, AWS, Azure, GCP, Kubernetes, Python, Microsoft PowerShell, APIs, Linux, Windows, ZTNA, SASE
4d
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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
1mo
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Principal Cybersecurity Engineer, Telco
Bellevue or Overland Park or Frisco or United States
$128k-$231k/yr OnsiteFull Time
5+ YOEBachelor's degree +7 years (or advanced degree +5 years) in CS/IT; expertise in 3GPP/5G, IMS, packet core; experience conducting security assessments, automation, incident management, threat modeling, and AI; CISSP/CISM/CRISC preferred.
3GPP, IMS, EPC, UPF, Diameter, SIP, HTTP/2, AI, e911, VoLTE, RCS, SMS, MMS, zero-trust
3mo
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AI Red Team Engineer
Plano, Texas, United States
OnsiteFull Time
5+ YOE5+ years in cybersecurity with security tooling/AI; strong Python/PowerShell; experience with red team/MITRE ATT&CK; API integration of LLMs; team collaboration.
Python, PowerShell, LLMs, OpenAI API, Anthropic API
2w
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Distinguished Engineer, AI Threat Defense
Eagan or Frisco or New York City or Richmond or San Francisco or Los Angeles or Irvine or McLean or Washington
$198k-$368k/yr HybridFull Time
12+ YOE12+ years of cybersecurity engineering experience at Principal, Staff, or Distinguished Engineer level, with AI threat defense, production AI systems, mature SOC/CIRT, enterprise security architecture, and technical influence expertise.
Model Context Protocol (MCP), SIEM, SOAR, SAST, AppSec, AWS, Azure, GCP, LLM
2mo
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Principal Architect for Manageability Firmware Stack
Spring or Fort Collins or Frisco or Chippewa Falls
$152k-$349k/yr OnsiteFull Time
10+ YOEBachelor's or Master's in CS/IS, 10+ years experience, expertise in Redfish, Open BMC, Yocto, secure SW development, test-driven development, AI integration, strong analytical and communication skills.
Redfish, Open BMC, Yocto
2mo
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Principal Architect for Manageability Firmware Stack
Spring or Fort Collins or Frisco or Chippewa Falls
$152k-$349k/yr OnsiteFull Time
10+ YOEBachelor's or Master's in Computer Science/Information Systems, 10+ years' experience, expertise in firmware/manageability architecture, Redfish, Open BMC, Yocto, secure SW lifecycle, TDD, AI integration, and strong communication skills.
Redfish, Open BMC, Yocto, AI
2mo
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Principal Architect for Manageability Firmware Stack
Spring or Fort Collins or Frisco or Chippewa Falls
$152k-$349k/yr OnsiteFull Time
10+ YOEBachelor's degree in CS/IS, typically 10+ years experience; deep knowledge of Redfish, Open BMC, Yocto, secure software development, firmware scaling, test-driven development, and AI integration; strong communication and architecture skills.
Redfish, Open BMC, Yocto, AI
1mo
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Principal Cloud Architect (for Monet Bank)
Plano, Texas, United States
OnsiteFull Time
5+ YOE8-10 years IT experience with at least 5 years in cloud architecture; deep AWS expertise, Infrastructure-as-Code and CI/CD, cloud network/security (VPC,encryption,IAM); bachelor's degree required; experience with enterprise AI platforms and regulated industries preferred.
AWS, VPC, Infrastructure-as-Code, CI/CD, Claude, ChatGPT, OpenAI
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