Senior Security Engineer

Position Description

Valiant Solutions is seeking a highly experienced and innovative Senior Security Engineer to lead advanced engineering initiatives supporting our client’s consolidated Security Operations Center. In this senior technical role, you'll leverage your extensive expertise in Splunk and advanced security tooling to design, build, and optimize sophisticated security orchestration, automation, and AI-enhanced solutions. Your senior-level proficiency in Python scripting will drive complex integrations, custom analytics, and automation strategies that significantly enhance operational efficiency and cybersecurity resilience.

 

You'll serve as a technical leader, collaborating directly with architects, stakeholders, and fellow senior engineers to develop and implement cutting-edge cybersecurity capabilities that proactively protect critical federal infrastructure from advanced threats. You will also play a pivotal role in strategic decision-making, conducting deep technical evaluations, prototyping innovative solutions, and mentoring mid-level engineers in best practices. If you’re driven by solving complex cybersecurity engineering challenges and shaping next-generation security operations, this senior-level opportunity offers an ideal platform for your expertise.

 

Named one of the Best Places to Work in the Washington DC area for 11 consecutive years, Valiant is proud of our employee-centric culture and commitment to excellence. If you are interested in learning more about Valiant and this opportunity, we invite you to apply now!

 

This position should expect to report onsite, but may allow for remote work. Remote work necessitates a high-level trust in our employees and we strictly adhere to the details found below in our Remote Work Policy. 

 

Required Experience:

• Active Secret or Top Secret Clearance.
• Minimum of twelve (12) years of progressive IT experience, with at least eight (8) years focused specifically on cybersecurity engineering.
• Bachelor of Science in Computer Science, Information Technology, Network Engineering, Security Engineering, System Administration, or related technical field, or two additional years of relevant senior-level experience.
• Minimum of five (5) years scripting experience in Python, specifically for security tool integrations, automation workflows, and customized cybersecurity analytics.
• Expert-level technical proficiency with multiple advanced security technologies and platforms, including Splunk SIEM, Endpoint Detection and Response (EDR), Security Orchestration Automation and Response (SOAR) tools, advanced vulnerability assessment solutions, and network security infrastructure.
• Proven senior-level experience developing complex automated workflows, leveraging AI/ML techniques for enhanced cybersecurity monitoring, predictive threat detection, and increased operational efficiency.
• Deep understanding and extensive practical experience implementing and adhering to federal cybersecurity guidelines and standards such as NIST SP 800-53, FISMA, and Federal Information Processing Standards (FIPS).
• Experience preparing advanced datasets for Machine Learning applications, building ML models, and delivering AI-driven cybersecurity solutions.
• Demonstrated ability to influence strategic technical decisions, collaborate effectively with senior stakeholders, architects, and engineering teams, and mentor junior and mid-level staff.
• Exceptional technical writing skills, advanced analytical and problem-solving capabilities, and proven ability to rapidly adapt to shifting priorities and requirements.

 

Preferred Certifications:

• CISSP, Splunk or Elastic certifications

 

Responsibilities:

• Lead the engineering, integration, and continuous optimization of the Splunk-based SIEM platform, ensuring exceptional performance, reliability, and advanced analytics capabilities.
• Develop, implement, and manage sophisticated Python-based automation scripts and integrations, significantly improving operational efficiency and cybersecurity posture.
• Provide senior technical leadership and strategic input on cybersecurity projects, guiding architecture decisions, technology selection, and advanced tool integrations.
• Create, enhance, and maintain complex security orchestration workflows and AI-driven analytical solutions to enable rapid, accurate incident detection, response, and threat intelligence dissemination.
• Conduct advanced technical evaluations, rapid prototyping, and implementation of emerging security technologies, ensuring continuous innovation and effectiveness.
• Oversee and mentor engineering teams, driving b