Sr. Splunk Engineer - TS/SCI with CI Poly

Company: MISSION BOX SOLUTIONS INC
Location: Chantilly
Posted on: February 18, 2026

Job Description:

Job Description Job Description We are seeking a highly skilled Sr. Splunk Engineer to join a cybersecurity team supporting federal managed and advanced services. This role is responsible for implementing, managing, and optimizing the Splunk platform to automate and orchestrate security operations, develop custom playbooks, integrate with other security tools, and enhance the overall security posture. Responsibilities Create custom Splunk reports, dashboards, and content per customer requirements Troubleshoot Splunk instances and execute all tasks outlined in the scope of work with minimal oversight Work with clients to analyze and understand their cybersecurity needs and objectives Serve as the escalation point for complex issues and provide technical leadership Mentor and aid Associate, Level I, and Level II Engineers on sophisticated tasking Qualifications Currently holds a TS/SCI with CI polygraph Security Certification (Security, CISSP, or equivalent) Splunk Core certification 7-10 years of related work experience Experience operating in classified environments Strong understanding of identity, SIEM, cybersecurity, and infrastructure concepts Splunk IT Service Intelligence (ITSI) certification desired; Splunk Certified Architect/Consultant preferred Experience with or interest in learning Splunk SOAR, Splunk Enterprise Security, and Cribl Stream Strong Linux and scripting experience (Python, Ansible, Terraform, JSON) Security Operations Center (SOC) experience Strong interpersonal skills, collaborative teamwork, and ability to communicate complex messages clearly Excellent problem-solving skills with keen attention to detail Willingness to travel to meet client needs Compensation & Benefits We offer a benefits package designed to support work/life balance and continued professional growth: Work/life balance Professional training resources Opportunities to solve unique, complex projects through creative problem-solving Volunteer opportunities through an employee community program Ability and technology to work remotely/from home where applicable Location: Chantilly, VA Schedule: Full-time with leadership and mentorship responsibilities Perks: Work in classified environments with cutting-edge cybersecurity technology and Splunk platforms Travel: Willingness to travel based on client needs Salary $206,000 per year.

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