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Zach Walker

Zach Walker

Full Stack Data Engineer

1900 S Hanover Street, Baltimore, Maryland, US, 21230
(262) 622-2142

Background


About

About

Full-stack data scientist, software developer, and digital network exploitation analyst with four years of professional experience spanning data science, software engineering, and cybersecurity. Self-driven and resourceful problem solver with a proven ability to independently identify and resolve complex challenges across highly technical domains, consistently delivering effective solutions in demanding and rapidly evolving environments.

Work Experience

Work Experience

  • Data Scientist, National Security Agency

    Aug, 2022 - Jan, 20263 years 5 months

    Conducted digital network exploitation and threat analysis in support of cyber operations while identifying gaps in analytical workflows and building full-stack data pipelines, Python tools, and web UIs to automate collection, enrichment, and visualization of operational data for analysts and stakeholders.

    • Developed and maintained 15+ mission-critical Python-based analytical tools and bespoke libraries, serving thousands of active users across a 20,000-analyst enterprise, providing ongoing user support, issue resolution, and codebase management.

    • Architected 3 full-stack web applications with React front-ends delivering intuitive interfaces for real-time querying, enrichment, and visualization of operational data against backend databases.

    • Engineered a custom parsing engine to ingest and normalize unstructured, organically formatted operational data into a structured graph database, powering automated network visualizations across environments with thousands of potential nodes.

    • Designed and deployed a distributed job scheduling system on operational infrastructure, orchestrating complex cross-network data routing from forward-deployed systems to agency-level data warehouses.

    • Established CI/CD pipelines via GitLab to ensure continuous integration, automated testing, and rapid deployment across all analytical tools and data platforms.

    • Architected 3 end-to-end automated ETL platforms handling ingestion, transformation, enrichment, standardization, and persistent storage of operational data — each fully replacing a dedicated full-time manual data management role.

    • Engineered a multi-stage automated data pipeline for a SOCOM unit that captured operational results, routed them through complex multi-enclave network environments to agency data warehouses, and surfaced enriched data through a purpose-built internal query and visualization platform — fundamentally transforming how the unit conducts cyber analysis.

    • Built high-throughput data processing workflows leveraging PySpark, Polars, and Pandas for large-scale transformation and enrichment of structured and unstructured operational datasets.

    • Pioneered 10+ novel data fusion methodologies linking disparate datasets to surface previously inaccessible insights, directly influencing hundreds of intelligence reports disseminated to 1st, 2nd, and 3rd party stakeholders.

    • Developed analytical tools that automated labor-intensive workflows previously requiring 1–3+ hours of manual effort per execution, eliminating thousands of cumulative analyst-hours across the enterprise.

    • Built an automated reconnaissance tool leveraging Shodan enumeration against active access to rapidly identify potential access vectors toward target space — enabling analysis at a scale and speed infeasible through manual methods.

    • Created advanced automated analysis capabilities that surfaced critical insights from operational data at volumes impossible through manual tradecraft, enabling discovery of high-value intelligence that would otherwise remain undetected.

    • Delivered 4 formal training sessions to hundreds of analysts on purpose-built analytical tools and operational methodologies, accelerating adoption and standardizing workflows across the agency.

    • Served as primary analyst for hundreds of cyber operations over a 3-year period, producing hundreds of network topology maps and identifying hundreds of high-value targets in direct support of national security objectives.

    • Developed an automated network mapping capability that generates comprehensive topology visualizations for networks with thousands of potential nodes, reclaiming hundreds to thousands of analyst-hours previously consumed by manual mapping.

    • Identified hundreds of exploitable vulnerabilities during an intensive 6-month operation, directing offensive cyber operations against discovered attack surfaces, triaging compromised devices, and conducting follow-on exploitation analysis — recognized with a Joint Commendation Medal.

    • Directed and executed cyber operations encompassing network discovery, threat analysis, and vulnerability assessment, enriching operational findings and delivering actionable intelligence to SOCOM mission planners and decision-makers.

    • Developed novel tradecraft fusing disparate data sources to enable target discovery, network enumeration, and kill chain development, directly influencing hundreds of operational reports.

    • Recognized as Military Performer of the Quarter on 4 separate occasions for sustained technical excellence and operational impact.

    • Awarded Joint Commendation Medal for exceptional performance across a 6-month cyber operation yielding hundreds of actionable findings.

    • Delivered 4 formal training sessions to hundreds of personnel on custom-built analytical platforms and operational methodologies, driving enterprise-wide capability adoption.

Skills

Skills

  • Web Development
Education

Education

  • , , Joint Cyber Analysis Course (JCAC)

    - Present

  • , , Cyber Operations Specialist Course

    - Present