Brian Marshall

Software Developer

Virginia Beach, Virginia, United States

About

Software Developer with a Bachelor of Science in Computer Science and 8+ years of full-stack and backend development experience. Expertise building and maintaining scalable enterprise applications for mission-critical clients, including the U.S. Department of Veterans Affairs. Recent Research & Development work enhancing GitHub Copilot Agents for Spec-Driven Development (SDD) workflows, achieving ~90% feature generation accuracy. Experienced working in secure government environments requiring clearance. U.S. Coast Guard veteran with strong Agile/Scrum, leadership, and problem-solving skills.

Experience

  • Developer at J-Mack Technologies, LLC
    Apr 2024 - May 2026 · 2 yrs 2 mos

    - Developed and maintained enterprise Java/Spring Boot applications with React frontends that support nationwide processing of disability and benefits claims for the Department of Veterans Affairs, ensuring high availability and compliance in a regulated government environment. - Played a key role on the Research & Development team advancing Spec-Driven Development (SDD) initiatives using GitHub Copilot Agents (Claude Sonnet 4.6, Opus 4.6, and GPT variants); resolved hallucination issues, eliminated instruction conflicts, and authored optimized prompts to achieve ~90% accuracy in automated feature generation. - Enhanced functionality, resolved critical production issues, and contributed to a major modernization overhaul on the Letters and Docs team, helping modernize legacy veteran claims processing systems for improved efficiency and user experience. - Collaborated in Agile/Scrum environments using Kubernetes, Azure, Jenkins, and Harness to deliver secure, scalable government solutions in regulated, high-compliance settings while maintaining strict security and performance standards.

  • Software Developer at BN Media
    Jul 2020 - May 2023 · 2 yrs 11 mos

    • Worked as a full stack software developer for https://www.radiantdigital.com/’s multiple website properties using Javascript, C#, .NET, Wordpress, HTML, and CSS. • Constructed the navigation menus for https://www.beliefnet.com/ and created ad placements across all websites. Developed Wordpress pages and internal tools used by our content creators. Wrote SQL queries to gather and analyze requested data in our systems. • Wrote Bash scripts for the automation of importing and exporting data between our databases and Utilized google analytics API to measure traffic and engagement across our websites. • Created the contributors page for https://www.familytoday.com/about-us/contributors/ with name and specialty filters. • Constructed custom build tools for our digital experience platform, Sitecore, to provide the requested page building and updating functionality for our content creators.

  • Software Engineer at StockX
    Jan 2018 - May 2020 · 2 yrs 5 mos

    • Worked as the main developer for the shipping team constructing technical features for domestic and international needs. Integrated shipping services with multiple carrier’s API’s. • Was the main contact and developer with UPS and DHL working closely with them to harness their API’s creating and printing out shipping labels, creating orders, and tracking the shipments in our system. • Constructed a https://www.geckoboard.com/ dashboard to track shipments through the entire shipping and authentication process of StockX, from the beginning of the order, through the seller shipment of the item to us for authentication, and the shipping and final delivery then to the buyer. the full process was tracked in real time to make sure all shipments were accounted for throughout each step of the entire process. Added many other analytics to the dashboard writing complex SQL queries to gain valuable insights like comparison of number of orders made in previous weeks for comparisons of trends and tracking the number of orders made in real time. • Added many features and troubleshot bugs across all our various backend systems, using PHP, GO, Ruby, Javascript, and other languages. • Worked as a backend developer across multiple services within a Kubernetes micro-service architecture writing code in Ruby, PHP, Javascript, and GO, as well as working extensively with MySQL and Postgres RDMS • Collaborated on several teams using SCRUM Agile development strategy to develop features, write requirements, and work closely with product owners to meet the goals of the company.

  • Junior Software Developer at RIIS LLC
    Jan 2017 - Jan 2018 · 1 yr 1 mo

    • Worked on a SCRUM team, as both QA and a developer, involved in the full project lifecycle to create a web application used by companies to match employees to culture. Used Java with spring boot framework for the backend and JavaScript with Angular 2 framework for the front-end. Delivered the project on schedule with 98% code test coverage • Trained extensively using Agile methodologies in developing Android apps using Java, and IOS apps using Swift. Trained in setting up continuous integration tools such as Jenkins. • Trained extensively using Agile methodologies in developing Android apps using Java and IOS apps using Swift. Trained in setting up continuous integration tools such as Jenkins.

  • Junior Software Engineer at RIIS
    Jan 2017 - Jan 2018 · 1 yr 1 mo

    Delivered full-lifecycle web application on a Scrum team (QA + development) using Java/Spring Boot backend and Angular 2/JavaScript frontend, achieving 98% test coverage and on-time delivery. Developed Android (Java) and iOS (Swift) applications while implementing Agile methodologies and Jenkins continuous integration.