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Sr. Security Engineer

Job in Alexandria, Fairfax County, Virginia, 22350, USA
Listing for: Tetra Tech
Full Time position
Listed on 2026-07-26
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security & Data Protection
Salary/Wage Range or Industry Benchmark: 140000 - 190000 USD Yearly USD 140000.00 190000.00 YEAR
Job Description & How to Apply Below

Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. Halvik is a highly successful WOB business with more than 50 prime contracts and 500+ professionals delivering Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology across the US Government. Be a part of something special!

Position Overview

Halvik is seeking a Senior Security Engineer to support a customer's enterprise initiative that enables secure, compliant adoption of Artificial Intelligence (AI) across their agency's hybrid environment. This role leads the design, implementation, and operationalization of enterprise-scale data discovery and classification, AI governance and protection controls, and detection capabilities for emerging AI-native development artifacts (e.g., Markdown-based prompt files, cursor rules, Git Hub Copilot instructions, and Model Context Protocol configuration files).

The Senior Security Engineer will serve as a technical lead on the program, working closely with customer stakeholders, the COR/CO, and Halvik delivery leadership to protect sensitive agency and stakeholder information while enabling the agency's AI adoption goals.

This is a Hybrid position requiring work at the customer location in Alexandria, VA.

Core Responsibilities
  • Strategic Execution: Lead the architecture and phased rollout of enterprise data discovery, classification, and AI governance capabilities, prioritizing high-risk repositories and expanding coverage across cloud, on-premises, SaaS, and developer environments.
  • AI Governance & Enforcement: Design and tune policy-based controls (allow, block, alert, redact, route) that monitor AI prompts, responses, and related artifacts in real time or near-real-time to prevent unauthorized disclosure of sensitive information.
  • Emerging AI Artifact Security: Own detection, classification, and protection of AI-native development artifacts, including Markdown prompt files, cursor rules, Copilot instructions, and MCP configuration files, across repositories, shared drives, and developer work spaces.
  • Operational Oversight: Maintain auditable enforcement records, oversee remediation workflows for policy exceptions and exposure events, and ensure timely, traceable resolution of compliance findings.
  • Collaboration: Partner with customer stakeholders, the COR/CO, and cross-functional Halvik teams to align implementation with the agency's cloud migration timeline, security approvals, and AI expansion roadmap.
  • Technical Performance: Architect integrations with enterprise DLP/CASB platforms, SIEM, and identity/access workflows; support early, automated detection of vulnerabilities in code, containers, and infrastructure-as-code templates, including flaws introduced by AI components or data pipelines feeding AI models.
  • Mentorship & Quality: Provide technical guidance and review for mid-level engineers and contribute to deliverables including the Enterprise Architecture and Deployment Plan, Discovery and Classification Configuration, and AI Governance and Enforcement Configuration.
  • Continued Proficiency: Stays current with emerging AI technologies and cybersecurity trends to ensure best-in-class practices.
Minimum Requirements
  • Education: Bachelor's degree in Computer Science, Information Security, or a related field (Master's Degree and 8 years of experience; equivalent experience may be considered in lieu of degree, 14+ years).
  • Experience: Minimum of 10 years of professional cybersecurity engineering experience, including at least 3 years focused on data loss prevention (DLP), data classification, or cloud/enterprise security architecture, ideally within a Federal environment.
  • Technical Proficiency: Advanced knowledge of data discovery/classification and DLP platforms (e.g., Microsoft Purview, Symantec DLP, Varonis), cloud security in AWS/Azure/Gov Cloud, CASB, and SIEM tooling.
  • Compliance: Working knowledge of NIST SP 800-53, FISMA, and the Risk Management Framework (RMF).
  • Certifications: Current CISSP certification is required.
  • Must be able to obtain and maintain a Public Trust security clearance.
Preferred Expertise
  • Demonstrated success supporting Federal contracts.
  • Hands-on experience securing generative AI and LLM-enabled workflows, including prompt engineering artifacts and Model Context Protocol implementations.
  • Familiarity with Agile/Scrum delivery methodologies and enterprise IT service management practices.
  • Scripting and automation experience (e.g., Python, Power Shell) to support policy tuning and reporting.
  • Strong analytical, written, and verbal communication skills, with the ability to translate technical risk into terms suitable for executive and government stakeholders.
  • Ability to work collaboratively with others and contribute to a team environment.
Benefits
  • Company-supported medical, dental, vision, life, STD, and LTD insurance
  • Benefits include 11 federal holidays and PTO
  • Eligible employees may receive performance-based…
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