William Simpson

William Simpson

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Senior / Staff Systems & Modernization Engineer | Enterprise Platform Refactoring, Integration & Stability | Java, XML, Full-Stack
Greenwich Township, New Jersey, United States
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Full-time jobs
Starting at USD175k/year
Flexible work
Starting at USD75/hour
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Résumé

Jobs verified_user 13% verified
  • C
    Software Engineer
    Cboe
    Sep 2022 - Aug 2025 (3 years)
    As a Software Engineer, I contributed to core platform architecture decisions, balancing reliability, performance, and long-term maintainability across multiple integrated systems. I architected and delivered core platform infrastructure supporting schema evolution, internationalization, and cross-system integration, enabling secure and reliable data exchange across multiple legacy and modern systems. I eliminated critical data integrity risks by reverse-engineering undocumented proprietary formats and implementing verified transformation logic with full unit test coverage, ensuring correctness in irreversible data workflows. Additionally, I designed and implemented enterprise identity integration using Single Sign-On (SSO) with MSAL, stren
  • S
    Senior Software Developer
    Seneca Technology
    Mar 2018 - Sep 2022 (4 years 7 months)
    Built a VS Code plugin with a remote backend using Node.js, TypeScript, and Java to modernize mainframe workflows and improve developer productivity. Enhanced an existing Eclipse plugin with new UI features and improved user experience for complex legacy environments. Modernized legacy automation scripts to support forward compatibility and long-term maintainability.
  • Watts Water Technologies
    CPQ System Administrator / Developer
    Watts Water Technologies
    May 2017 - Nov 2017 (7 months)
    Designed and implemented a CPQ prototype with a focus on usability, data architecture, and system reliability to improve customer experience. Developed a rule-based sizing and selection engine with engineering calculations to ensure solution correctness and cost efficiency.
  • C
    Director of User Experience / Senior Software Engineer
    Configurex
    Jan 2016 - Feb 2017 (1 year 2 months)
    Designed and implemented end-to-end sizing and selection platforms requiring engineering and physics-based validation, ensuring solution correctness in systems where calculation errors could result in real-world failure. Built high-volume processing workflows capable of handling millions of data points per user event while maintaining consistent performance and predictable system behavior. Administered AWS infrastructure for production systems, including network security and web server configuration, supporting secure and reliable platform operations. Led and completed a SOC 2 Type 1 audit by defining security policies, change management procedures, and operational controls, strengthening platform trust and compliance posture.
  • Frontier Communications
    Senior Systems Analyst
    Frontier Communications
    Apr 2014 - Jan 2016 (1 year 10 months)
    Designed and implemented ETL pipelines to synchronize pricing, promotional, and product data across enterprise CRM systems, ensuring transactional accuracy and data consistency. Consulted on the design and integration of a new CPQ platform, supporting accurate product configuration and pricing workflows across distributed systems.
  • SkillSoft
    Senior Software Engineer
    SkillSoft
    Oct 2011 - Apr 2014 (2 years 7 months)
    Designed and implemented tools for conversion, packaging, and integration of multiple CBT course formats across LMS platforms. Designed and implemented a reusable JavaScript SDK and tooling framework to standardize content packaging and LMS integration across multiple platforms. Built unified packaging solutions supporting SCORM and AICC LMS integration.
  • F
    Coowner
    Fancy and Affordable
    Dec 2009 - Jan 2014 (4 years 2 months)
    Drop shipping and custom gift basket business. I handled web, inventory, accounting and finances.
  • IBM
    XML Bridge Architect / Database Administrator verified_user Verified experience
    IBM
    Jan 2003 - May 2007 (4 years 5 months)
    As an XML Bridge Architect / Database Administrator, I designed and maintained bidirectional transaction systems to securely transfer business records between disparate enterprise databases, ensuring data integrity and reliability across system boundaries. I implemented transformation pipelines using XSLT and Perl to support automated, auditable data movement workflows in production environments. Additionally, I leveraged my extensive experience in data analysis, which, while not officially classified as "data science," involved significant elements of this discipline. Over my 12 years at IBM, I utilized tools such as SAS, DB2, XML, Java, and SQL to analyze customer workflows, manage SLA reporting, and oversee Problem, Change, and Outage ma
Education verified_user 50% verified
  • Rochester Institute of Technology
    Master of Science in Professional Studies verified_user Verified experience
    Rochester Institute of Technology
    May 2015
    Engineering Psychology and Human Computer Interaction
  • Rochester Institute of Technology
    Bachelor of Science in Computer Science
    Rochester Institute of Technology
    May 1997
    Computer Science
Projects (professional or personal) verified_user 0% verified
  • C
    Porting of UI from primarily jQuery to React.js
    Cboe Technology Philippines Inc.
    Sep 2022 - Aug 2025 (3 years)
    Cboe's UI Team used React.js and I was learning it to port our legacy UI to the new stack. This project was more of a long-term side project and wasn't one of my main tasks.
  • Seneca
    VSCode Plugin
    Seneca
    Mar 2018 - Sep 2022 (4 years 7 months)
    The VSCode project used Java on the backend to communicate with the MVS mainframe server software written in HLASM. The interface for the VSCode plugin was written in TypeScript and access VSCode feature built on Electron.
  • Rochester Institute of Technology
    Thesis work
    Rochester Institute of Technology
    Jan 2010 - May 2015 (5 years 5 months)