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Hi, I’m Liam O’Connor, a frontend developer and full stack engineer with 10+ years of experience building high-converting landing pages, sales funnels, and responsive web applications. I translate Figma designs into pixel-perfect, mobile-responsive pages and optimize for speed and conversions, collaborating closely with marketing and design teams to deliver projects on tight timelines.…

Liam O'Connor

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

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Hi, I’m Liam O’Connor, a frontend developer and full stack engineer with 10+ years of experience building high-converting landing pages, sales funnels, and responsive web applications. I translate Figma designs into pixel-perfect, mobile-responsive pages and optimize for speed and conversions, collaborating closely with marketing and design teams to deliver projects on tight timelines.…

Available to hire

Hi, I’m Liam O’Connor, a frontend developer and full stack engineer with 10+ years of experience building high-converting landing pages, sales funnels, and responsive web applications.

I translate Figma designs into pixel-perfect, mobile-responsive pages and optimize for speed and conversions, collaborating closely with marketing and design teams to deliver projects on tight timelines.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Software Engineer at Tracworx

August 1, 2014 - March 1, 2018

Contributed to developing a React.js frontend for a healthcare portal with responsive UI components that improved mobile user retention and engagement; assisted with Flask backend services for authentication and secure data access; created reusable React components and integrated them with backend APIs; participated in automated testing with Jest and applied Webpack optimizations that reduced page load time.

Full Stack Developer at SuntechIT Global

May 1, 2018 - August 1, 2021

Developed responsive landing pages and user interfaces using React.js and Vue.js, translating design mockups into pixel-perfect, mobile-optimized pages; built frontend components for a data analytics platform with cross-browser compatibility; implemented A/B testing workflows and conversion optimization strategies; collaborated with designers and marketing to ensure correct asset implementation and timely delivery; optimized frontend performance with CSS/JS refinements and lazy loading; documented custom HTML blocks and styling for scalability.

Senior Software Engineer at Signify Health

September 1, 2021 - Present

Architected and delivered high-performance landing pages and sales funnels by converting Figma designs into functional, responsive web applications using React.js, HTML5, CSS3, and JavaScript; engineered Angular and React dashboards with pixel-perfect styling and reusable components; led frontend optimization reducing page load times by 20% through performance tuning, lazy loading, and code splitting; spearheaded A/B testing programs and data-driven funnel improvements increasing user engagement; designed and deployed component libraries and reusable frontend modules with comprehensive documentation; mentored junior developers on responsive design, cross-browser compatibility, and conversion optimization.