R

Robert Jeffrey Holyoak

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Rapid City, South Dakota, United States
Contact Robert regarding: 
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Full-time jobs
Starting at USD65/hour

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Résumé

Jobs verified_user 0% verified
  • T
    Senior Software Engineer
    Trustwave Amtrak
    Jun 2024 - Sep 2025 (1 year 4 months)
    As a Senior Software Engineer, I designed and implemented a robust cybersecurity analytics infrastructure to protect enterprise systems and infrastructure. My key contributions include:

    • Designing ingestion pipelines that integrate over 100 cybersecurity data feeds into the DataBee platform and Snowflake analytics environment.
    • Building automation workflows and analytics dashboards using Snowflake, Streamlit, Power BI, and React, which enabled faster threat investigation and response.
    • Developing backend services and integrations to normalize and correlate security events across heterogeneous data sources.
    • Delivering production-ready deployments across hundreds of enterprise systems and workstations.
  • Intel Corporation
    Database Administrator II / Backend Engineer
    Intel Corporation
    Aug 2023 - May 2024 (10 months)
    Supported enterprise data systems and modernized legacy internal applications.
    Key Contributions
    • Administered MS SQL, PostgreSQL, and Elasticsearch clusters supporting enterprise
    workloads.
    • Built Python/FastAPI/React/MS SQL applications to replace legacy C#, PHP, and MS Access
    applications.
    • Developed ETL pipelines ingesting high-volume log data into relational and search databases.
    • Optimized SQL Server and Elasticsearch queries improving reliability and performance of
    internal analytics tools.
    • Delivered technical prototypes and architectural documentation for modernization initiatives.
    Tech: Python, FastAPI, SQL Server, PostgreSQL, Elasticsearch, React
  • ZeroFox
    Senior Software Engineer
    ZeroFox
    Jun 2021 - Mar 2023 (1 year 10 months)
    Developed backend infrastructure for a large-scale threat intelligence and cybersecurity analytics
    platform.
    Key Contributions
    • Designed and maintained REST APIs supporting threat intelligence data pipelines.
    • Implemented backend services using Python, Go, Django, MySQL, and Elasticsearch.
    • Improved query performance by optimizing Django ORM and SQL queries across high-volume
    datasets.
    • Contributed to containerized microservices deployed across Dev/Stage/Production
    environments.
    • Produced OpenAPI / Swagger documentation enabling easier integration with external
    customers.
    Tech: Python, Go, Django, MySQL, Elasticsearch, Docker, Terraform
  • V
    Senior Software Developer
    Vigilante ATI (Acquired by ZeroFox)
    Aug 2019 - Jun 2021 (1 year 11 months)
    Built backend services and APIs supporting a cybersecurity data lake platform.
    Key Contributions
    • Developed new APIs and backend services using Python, Django, PostgreSQL, and
    Elasticsearch.
    • Built ETL pipelines processing high-volume cybersecurity datasets used by revenue-
    generating APIs.
    • Improved API performance and reliability across distributed systems.
    • Supported cross-functional teams delivering new capabilities in a startup environment.
    Tech: Python, Django, PostgreSQL, Elasticsearch, Data Pipelines
  • QL2 Software
    Software Engineer
    QL2 Software
    Jul 2015 - Aug 2018 (3 years 2 months)
    Primary U.S. developer supporting real-time data processing systems used in commercial data
    products.
    Key Contributions
    • Maintained and enhanced real-time systems written in C, C++, Perl, and SQL.
    • Restored automated testing infrastructure improving product reliability and release cadence.
    • Coordinated development work with offshore engineering teams.
  • Black Hills Energy
    Senior Programmer Analyst
    Black Hills Energy
    Dec 2006 - Mar 2015 (8 years 4 months)
    As a Senior Programmer Analyst, I developed enterprise software and data systems that supported energy operations, ensuring efficiency and reliability across the organization. Key contributions included building full-stack enterprise applications using Perl, SQL, MS SQL Server, and Oracle, which enhanced operational capabilities. I delivered comprehensive reporting, analytics, and asset management tools utilized across various operational departments, significantly improving decision-making processes. Additionally, I supported mission-critical enterprise systems and led infrastructure upgrades to maintain optimal performance. My role also involved managing highly advanced Microsoft Excel spreadsheets to track available energy on the grid, i
Education verified_user 0% verified
  • C
    Claude Code – The Practical Guide
    Feb 2026
  • South Dakota School of Mines & Technology
    Post-Graduate Studies
    South Dakota School of Mines & Technology
    Jan 1999 - Aug 2001 (2 years 8 months)
    Computer Science
  • Southern Utah University
    Master of Accountancy
    Southern Utah University
    Aug 1989 - Dec 1990 (1 year 5 months)
  • Southern Utah University
    Bachelor of Science
    Southern Utah University
    Aug 1987 - Jun 1989 (1 year 11 months)
    Accounting