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Senior front-end software engineer with 37+ years of enterprise systems engineering experience, combining deep institutional knowledge from legacy IBM Query Engines (CQE/DQE/XQE) with modern web innovation. Proven at modernizing legacy infrastructure into scalable, web-based solutions. Over decades, I’ve architected and delivered complex data-modeling and query-related interfaces, leveraging React, TypeScript/JavaScript, and MobX for high-frequency state management, while also strengthening back-end query performance and data connectivity using C/C++ and IBM UDA provider technologies across diverse platforms.…Senior front-end software engineer with 37+ years of enterprise systems engineering experience, combining deep institutional knowledge from legacy IBM Query Engines (CQE/DQE/XQE) with modern web innovation. Proven at modernizing legacy infrastructure into scalable, web-based solutions. Over decades, I’ve architected and delivered complex data-modeling and query-related interfaces, leveraging React, TypeScript/JavaScript, and MobX for high-frequency state management, while also strengthening back-end query performance and data connectivity using C/C++ and IBM UDA provider technologies across diverse platforms.

William Guigue

Front-End Developer, Back-End Developer, Software Engineer, +2

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Senior front-end software engineer with 37+ years of enterprise systems engineering experience, combining deep institutional knowledge from legacy IBM Query Engines (CQE/DQE/XQE) with modern web innovation. Proven at modernizing legacy infrastructure into scalable, web-based solutions. Over decades, I’ve architected and delivered complex data-modeling and query-related interfaces, leveraging React, TypeScript/JavaScript, and MobX for high-frequency state management, while also strengthening back-end query performance and data connectivity using C/C++ and IBM UDA provider technologies across diverse platforms.…Senior front-end software engineer with 37+ years of enterprise systems engineering experience, combining deep institutional knowledge from legacy IBM Query Engines (CQE/DQE/XQE) with modern web innovation. Proven at modernizing legacy infrastructure into scalable, web-based solutions. Over decades, I’ve architected and delivered complex data-modeling and query-related interfaces, leveraging React, TypeScript/JavaScript, and MobX for high-frequency state management, while also strengthening back-end query performance and data connectivity using C/C++ and IBM UDA provider technologies across diverse platforms.

Available to hire

Senior front-end software engineer with 37+ years of enterprise systems engineering experience, combining deep institutional knowledge from legacy IBM Query Engines (CQE/DQE/XQE) with modern web innovation. Proven at modernizing legacy infrastructure into scalable, web-based solutions.

Over decades, I’ve architected and delivered complex data-modeling and query-related interfaces, leveraging React, TypeScript/JavaScript, and MobX for high-frequency state management, while also strengthening back-end query performance and data connectivity using C/C++ and IBM UDA provider technologies across diverse platforms.

Skills

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Beginner

Work Experience

Senior Front-End Modeling Developer at IBM / COGNOS

January 1, 2016 - January 1, 2025

Architected and led development of complex data-modeling interfaces using React and TypeScript, leveraging MobX for high-frequency state management in enterprise environments. Modernized UI/UX infrastructure by integrating the IBM Carbon Design System and contributed code back to the Carbon ecosystem to improve component accessibility and functionality. Engineered robust test suites using Jest and React Testing Library to reduce production regressions and ensure reliability of core modeling logic. Mentored cross-functional teams during the transition from legacy patterns to modern, type-safe, component-based architectures.

Front-End Modeling Developer at IBM / COGNOS

January 1, 2010 - January 1, 2015

Spearheaded migration of legacy modeling tools to modern web standards, ensuring seamless data flow between engine-level logic and the browser. Optimized front-end performance for massive datasets by bridging back-end query logic with efficient UI rendering patterns.

Back-End Developer (DQE/XQE Stack) at IBM / COGNOS

January 1, 2007 - January 1, 2009

Improved query performance for the extensible eXten sible Query Engine (XQE) by optimizing the TM1 provider using Java and C++ within the Dynamic Query Engine stack. Resolved architectural bottlenecks in data retrieval, significantly enhancing the speed of enterprise-level reporting tools.

Back-End Developer (CQE/UDA Stack) at COGNOS

January 1, 2001 - January 1, 2006

Developed and maintained mission-critical UDA providers (ODBC, JDBC, QFW) in C/C++ across diverse platforms including AIX, MVS, and AS/400. Solved high-complexity data connectivity challenges for global clients, ensuring stable query execution across heterogeneous enterprise environments.

Product Developer (Core COGNOS Suite) at IBM / COGNOS

January 1, 1988 - January 1, 2000

Key contributor to the foundational design and release of the Cognos Suite (versions 7 through 12), including PowerHouse, Impromptu, and PowerPlay. Navigated major technological shifts, maintaining platform stability while migrating core products through several generations of operating systems.