Security Engineer III, Splunk Content Engineer (Secret Clearance)

Deloitte
Deloitte

United States · Virginia, USA · Arlington, VA, USA

Posted on Jun 9, 2026

Position Summary

Our Deloitte Cyber team understands the unique challenges and opportunities businesses face in cybersecurity. Join our team to deliver powerful solutions to help our clients navigate the ever-changing threat landscape. Through powerful solutions and managed services that simplify complexity, we enable our clients to operate with resilience, grow with confidence, and proactively manage to secure success.

Work you'll do

As a Security Engineer III on the Government & Public Services team, you will be responsible for…

  • Implementing automation to optimize workflows and improve security response uniformity across client environments
  • Developing content for security platforms such as Splunk, Archer, Tanium, Trellix, FireEye, and CrowdStrike
  • Building, implementing, and managing security information and event management correlation rules, logic, and content
  • Tuning security information and event management rules and logic to reduce false positives, known errors, and expected network behavior
  • Creating scheduled and ad hoc reporting, maintaining event schemas, and applying customized security severity criteria

A successful candidate would possess these skills:

  • Ability to work independently and collaborate as part of a team
  • Effective written and verbal communication skills
  • Meticulous attention to detail and quality of work product
  • Ability to build and sustain professional relationships
  • Ability to lead projects or workstreams
  • Ability to manage and prioritize multiple tasks in a fast-paced and dynamic environment
  • Strong interpersonal skills and professional demeanor
  • Ability to meet deadlines
  • Ability to mentor and provide clear guidance to others

The team

Deloitte’s Government & Public Services (GPS) practice – our people, ideas, technology and outcomes – is designed for impact. Serving federal, state, & local government clients as well as public higher education institutions, our team of professionals brings fresh perspective to help clients anticipate disruption, reimagine the possible, and fulfill their mission promise.

Our Cyber Defense & Resilience offering assists clients in defending against advanced threats by transforming security operations, monitoring technology, data analytics, and threat intelligence. Helps manage and protect dynamic attack surfaces and provides rapid crisis and cyber incident response, ensuring clients can be ready for, respond to, and recover from business disruptions.

The Project Delivery Talent Model is designed for professionals with specialized skills that align to a current client need. Team members focus on delivering services to clients, without additional expectations related to business development or promotion. Their employment is tied to their role on a project, and they are eligible for a benefits package that is competitive for project delivery-focused professionals.

Qualifications

Required:

  • Bachelor's Degree required.
  • Active Secret Clearance required.
  • Ability to work onsite in Herndon, VA up to 3 days a week.
  • 2+ years of experience within the following:
    • Developing, implementing, and managing security information and event management correlation rules and content
    • Experience building and implementing event correlation rules, logic, and content in a security information and event management environment
    • Experience tuning event correlation rules and logic to filter security events associated with known network behavior, false positives, and known errors
    • Experience maintaining an event schema with customized security severity criteria
    • Experience creating scheduled and ad hoc reporting with security information and event management tools
    • Experience with security information and event management technologies and event collector deployments in Windows and Linux operating environments
  • Ability to travel 15%, on average, based on the work you do and the clients and industries/sectors you serve.
  • Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.

Preferred:

  • Experience creating content for one or more of the following tools: Splunk, Archer, Tanium, Trellix, FireEye, or CrowdStrike
  • Experience supporting cyber defense, security operations, or incident response environments
  • Experience working with government clients or within regulated environments
  • Experience automating security workflows and operational processes
  • Experience leading technical workstreams or junior team members
Deloitte is committed to providing reasonable accommodations for people with disabilities. If you require a reasonable accommodation to participate in the recruiting process, please direct your inquiries to the Global Call Center (GCC) at USTalentCICInbox@deloitte.com.
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Benefits

At Deloitte, we know that great people make a great organization. We value our people and offer employees a broad range of benefits. Learn more about what working at Deloitte can mean for you.
Our people and culture

Our inclusive culture empowers our people to be who they are, contribute their unique perspectives, and make a difference individually and collectively. It enables us to leverage different ways of thinking, ideas, and perspectives, and bring more creativity and innovation to help solve our clients' most complex challenges. This makes Deloitte one of the most rewarding places to work.
Our purpose
Deloitte’s purpose is to make an impact that matters for our people, clients, and communities. At Deloitte, purpose is synonymous with how we work every day. It defines who we are. Our purpose comes through in our work with clients that enables impact and value in their organizations, as well as through our own investments, commitments, and actions across areas that help drive positive outcomes for our communities. Learn more.
Professional development

From entry-level employees to senior leaders, we believe there’s always room to learn. We offer opportunities to build new skills, take on leadership opportunities and connect and grow through mentorship. From on-the-job learning experiences to formal development programs, our professionals have a variety of opportunities to continue to grow throughout their career.
As used in this posting, "Deloitte" means Deloitte Transactions and Business Analytics LLP, a subsidiary of Deloitte LLP. Please see www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or protected veteran status, or any other legally protected basis, in accordance with applicable law.
Requisition code: 355265
Job ID 355265