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Hi, I’m William Halloran, a React and TypeScript Front-End Engineer focused on building production grade web and mobile applications with accessible, maintainable component architecture. I love delivering scalable UI, modernizing legacy workflows, and collaborating in Agile teams to ship high-quality features using React, React Native, and TypeScript. With 4+ years of professional experience, I’ve worked on title editors, search, reporting systems, and notification workflows, bridging UI workflows with backend services. I’m seeking remote contract opportunities to contribute polished front-end solutions for customers at scale.…Hi, I’m William Halloran, a React and TypeScript Front-End Engineer focused on building production grade web and mobile applications with accessible, maintainable component architecture. I love delivering scalable UI, modernizing legacy workflows, and collaborating in Agile teams to ship high-quality features using React, React Native, and TypeScript. With 4+ years of professional experience, I’ve worked on title editors, search, reporting systems, and notification workflows, bridging UI workflows with backend services. I’m seeking remote contract opportunities to contribute polished front-end solutions for customers at scale.

William Halloran

Front-End Developer, Web Developer, Full Stack Developer, +2

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Hi, I’m William Halloran, a React and TypeScript Front-End Engineer focused on building production grade web and mobile applications with accessible, maintainable component architecture. I love delivering scalable UI, modernizing legacy workflows, and collaborating in Agile teams to ship high-quality features using React, React Native, and TypeScript. With 4+ years of professional experience, I’ve worked on title editors, search, reporting systems, and notification workflows, bridging UI workflows with backend services. I’m seeking remote contract opportunities to contribute polished front-end solutions for customers at scale.…Hi, I’m William Halloran, a React and TypeScript Front-End Engineer focused on building production grade web and mobile applications with accessible, maintainable component architecture. I love delivering scalable UI, modernizing legacy workflows, and collaborating in Agile teams to ship high-quality features using React, React Native, and TypeScript. With 4+ years of professional experience, I’ve worked on title editors, search, reporting systems, and notification workflows, bridging UI workflows with backend services. I’m seeking remote contract opportunities to contribute polished front-end solutions for customers at scale.

Available to hire

Hi, I’m William Halloran, a React and TypeScript Front-End Engineer focused on building production grade web and mobile applications with accessible, maintainable component architecture. I love delivering scalable UI, modernizing legacy workflows, and collaborating in Agile teams to ship high-quality features using React, React Native, and TypeScript.

With 4+ years of professional experience, I’ve worked on title editors, search, reporting systems, and notification workflows, bridging UI workflows with backend services. I’m seeking remote contract opportunities to contribute polished front-end solutions for customers at scale.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Engineer at The Library Corporation

January 1, 2022 - Present

Developed and maintained large-scale React-based applications for public and school libraries. Modernized legacy AngularJS and vanilla JavaScript UI workflows into reusable React components. Implemented WCAG-focused accessibility improvements across components. Implemented features for title editor, advanced search, and reporting systems, integrating UI with backend services and APIs. Built a customizable patron notification system. Collaborated with product owners in Agile sprints to translate wireframes into production-ready features.

Software Developer at Absolute Home Mortgage

November 1, 2021 - January 1, 2024

Developed a cross-platform mortgage loan mobile app (iOS/Android) using React Native. Built borrower portal, loan calculators, application workflows, task management tools, and administrative dashboards. Integrated third-party APIs and optimized complex form workflows for production reliability and usability. Led testing and debugging efforts to ensure scalable release readiness.