Senior SIEM Engineer - Splunk

Quantum Sky is searching for a Senior SIEM Engineer to own the architecture, strategy, and long-term health of the organization's Splunk deployment, setting standards for detection engineering, data onboarding, and platform scalability. This role operates with autonomy, mentors mid-level engineers, and partners directly with security leadership to align Splunk's capability with the broader detection and response strategy. The senior engineer is the escalation point for complex platform issues, distributed environment troubleshooting, and high-priority incidents. 

Responsibilities 

• Design and own the overall Splunk architecture, including indexer clustering, search head clustering, forwarder tiering, and storage/retention (including SmartStore where applicable) strategy 
• Lead detection engineering strategy within Splunk ES: prioritize correlation search development based on threat intelligence, risk assessments, and gaps in coverage 
• Establish and enforce standards for data onboarding, CIM normalization, field extraction quality, and correlation search performance 
• Drive Splunk platform upgrades, app/add-on management, and integrations with other security tools (SOAR platforms, threat intel feeds, EDR, ticketing systems) 
• Optimize search performance and indexing strategy to manage license usage and infrastructure cost at scale 
• Mentor and provide technical guidance to mid-level SIEM engineers and SOC analysts on SPL, use case design, and Splunk best practices 
• Serve as the technical escalation point for complex investigations and major incidents requiring deep Splunk expertise 
• Evaluate and recommend new Splunk apps, premium solutions, or architectural changes 
• Own Splunk-related metrics and reporting for leadership (detection coverage, mean time to detect, platform performance, license/cost efficiency) 
• Lead threat hunting initiatives using advanced SPL, data models, and Splunk's pivot/statistical functions 
• Ensure Splunk configuration and processes support audit and compliance requirements (e.g., PCI-DSS, HIPAA, SOC 2, NIST) 
• Represent the SIEM/detection function in cross-functional security architecture and incident response planning 

Required:

• Bachelor’s Degree required (experience and education equivalents are considered and can be substituted for a Bachelor’s Degree. 
• 8 years of general work experience with 6 years relevant “functional” experience in security operations or detection engineering, with substantial hands-on Splunk ownership, including at least some experience in distributed/clustered environments 
• Advanced proficiency in SPL, including complex correlation searches, data models, and search optimization for large-scale environments 
• Deep working knowledge of Splunk architecture (indexer/search head clustering, forwarder management, index design) and Splunk Enterprise Security if deployed 
• Strong understanding of the MITRE ATT&CK framework, cyber kill chain, and threat modeling 
• Demonstrated experience designing detection strategies within Splunk, not just implementing individual searches 
• Strong scripting/automation skills (Python, PowerShell) and familiarity with SOAR platform integration (e.g., Splunk SOAR, if in use) 
• Experience with cloud security monitoring (AWS, Azure, or GCP log sources) and Splunk's cloud-specific add-ons 
• Track record of leading or significantly contributing to incident response investigations 
• Familiarity with compliance frameworks relevant to the organization's industry 
• Relevant certifications preferred: Splunk Core Certified Advanced Power User, Splunk Certified Architect, Splunk Enterprise Security Certified Admin, GCIA, GCIH, GCFA, or CISSP 

Desired:

• Experience with Splunk in a VMware ESXi, vCenter virtual infrastructure 
• Experience or working knowledge with similar SIEM tools 

Clearance:

• An active Top Secret clearance with SCI eligibility is required.

Location and Schedule:

• This position is onsite at the customer location in Washington, DC. The environment requires onsite support five days per week, with some flexibility in scheduling based on program and customer requirements. Core business hours are 8am-4pm.

Compensation:

• Compensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically between $145,000-$155,000. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.

Benefits:

• Highlights of our benefits include Health/Dental/Vision, 401(k) match, Paid Time Off, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, and parental leave.

The world the mission operates in is going post-quantum, contested, and machine-speed. Quantum Sky engineers the advantage across cyber, networks, software, and quantum because the mission demands dominance, not parity. We don't follow the map. We draw it. 

At Quantum Sky, we believe that success starts with our people. We foster a collaborative, innovative, and mission-driven environment where every team member plays a critical role in shaping the future of technology. Are you ready to join #TeamQuantumSky? 

Quantum Sky Engineering LLC is an Equal Opportunity Employer; all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, [sexual orientation, gender identity,] national origin, disability, status as a protected veteran, or any characteristic protected by applicable law.