Senior Engineer, Aircraft Security

Job Summary: Our client, a leading travel & hospitality provider, is looking for a Senior Engineer, Aircraft Security to join their Cybersecurity organization, contract (renewable), onsite 3 days/week in Fort Worth Texas. This role backfills a departing senior engineer and owns detection engineering, remediation lifecycle, and PKI engineering for aircraft/connected-system security. The team operates with high autonomy and minimal day-to-day direction, so the right candidate is a self-directed senior engineer who scopes and drives their own work rather than someone who works off an assigned queue or ticket rotation. This is explicitly not a SOC/alert-queue role. Core Responsibilities:Engineer and continuously improve detection content and analytics in Microsoft Sentinel/SIEM across aircraft and connected-system telemetryAuthor KQL queries and detection rules, build dashboards, and independently investigate security events end-to-end with strong written documentationOwn remediation plans from finding to validated closure, including vulnerability/finding trackingProvide PKI engineering depth for aircraft-security certificate use cases, including enrollment protocols (SCEP/EST), trusted-role operations, and certificate lifecycle management for certificate-based authentication and software signing/validationEngineer and operate the Absolute endpoint/device platform (SSO, policy groups, API integrations)Apply AI/agentic tooling (e.g., Claude) to accelerate detection, investigation, and remediation workRequired Skills/Experience (Must-Haves):5+ years in security engineering with demonstrated independent project ownership (not queue-based SOC analyst experience)Hands-on PKI engineering depth: SCEP/EST, Certificate Policy/Certification Practice Statement (CP/CPS), trusted roles, Levels of Assurance, NIST SP 800-63, certificate-based authentication and software signing/validation (not just certificate consumption/usage)Self-directed detection engineering in Microsoft Sentinel, including KQL/query and rule authoring and dashboard buildRemediation lifecycle ownership — tracking findings from discovery to validated closurePreferred Skills/Experience (Nice-to-Haves):Hands-on AI/agentic security tooling experience (Claude/LLM-assisted code and configuration analysis, prompt engineering for security use cases)Absolute endpoint platform engineering (SSO, policy groups, API)Scripting/automation in Python or PowerShellAviation, OT, cyber-physical, or embedded-systems exposureHSM/key-management and code-signing infrastructure experienceKey Competencies and Behaviors:Entrepreneurial, self-starting mindset — comfortable with ambiguity and given a goal rather than a task listConnects detection, remediation, and PKI into one coherent security outcome without needing task-to-task managementStrong written documentation habits for independent investigationsComfortable operating in a small, high-trust, low-bureaucracy team covering safety-sensitive systemsNot a fit for candidates seeking a steady assigned ticket queue or close daily directionWork Environment:Location: Onsite 3 days/week - Fort Worth, TexasCompensation & Benefits Pay Range: The approximate pay range for this position is between $62/hr and $68/hr. Please note that the pay range provided is a good faith estimate. Final compensation may vary based on factors including but not limited to background, knowledge, skills, and location. We comply with local wage minimums. Medical, Dental, & Vision Insurance Plans Employee-Owned Profit Sharing (ESOP) 401K offered About KellyMitchell At KellyMitchell, our culture is world class. We’re movers and shakers! We don’t mind a bit of friendly competition, and we reward hard work with unlimited potential for growth. This is an exciting opportunity to join a company known for innovative solutions and unsurpassed customer service. We're passionate about helping companies solve their biggest IT staffing & project solutions challenges. As an employee-owned, women-led organization serving Fortune 500 companies nationwide, we deliver expert service at a moment's notice. Marketing Disclosure By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from KellyMitchell and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.careers.kellymitchell.com/privacy-policy