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Hi, I’m Ricardo, a front-end engineer with 8+ years of experience building scalable ReactJS web applications. I specialize in A/B testing, feature flagging, and AI-assisted development to accelerate iteration and improve code quality. I’ve delivered UX and performance improvements for SaaS and fintech platforms, including SEO optimizations, Core Web Vitals improvements, and AI-assisted debugging. I enjoy collaborating across teams to turn ideas into polished, robust frontend experiences.…Hi, I’m Ricardo, a front-end engineer with 8+ years of experience building scalable ReactJS web applications. I specialize in A/B testing, feature flagging, and AI-assisted development to accelerate iteration and improve code quality. I’ve delivered UX and performance improvements for SaaS and fintech platforms, including SEO optimizations, Core Web Vitals improvements, and AI-assisted debugging. I enjoy collaborating across teams to turn ideas into polished, robust frontend experiences.

Ricardo Carballo

Front-End Developer, Web Developer, Web Designer, +2

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Hi, I’m Ricardo, a front-end engineer with 8+ years of experience building scalable ReactJS web applications. I specialize in A/B testing, feature flagging, and AI-assisted development to accelerate iteration and improve code quality. I’ve delivered UX and performance improvements for SaaS and fintech platforms, including SEO optimizations, Core Web Vitals improvements, and AI-assisted debugging. I enjoy collaborating across teams to turn ideas into polished, robust frontend experiences.…Hi, I’m Ricardo, a front-end engineer with 8+ years of experience building scalable ReactJS web applications. I specialize in A/B testing, feature flagging, and AI-assisted development to accelerate iteration and improve code quality. I’ve delivered UX and performance improvements for SaaS and fintech platforms, including SEO optimizations, Core Web Vitals improvements, and AI-assisted debugging. I enjoy collaborating across teams to turn ideas into polished, robust frontend experiences.

Available to hire

Hi, I’m Ricardo, a front-end engineer with 8+ years of experience building scalable ReactJS web applications. I specialize in A/B testing, feature flagging, and AI-assisted development to accelerate iteration and improve code quality.

I’ve delivered UX and performance improvements for SaaS and fintech platforms, including SEO optimizations, Core Web Vitals improvements, and AI-assisted debugging. I enjoy collaborating across teams to turn ideas into polished, robust frontend experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Beginner

Beginner

Beginner

Language

English

Fluent

Spanish; Castilian

Fluent

Work Experience

Senior Software Engineer (Frontend) at Simply Wall Street

July 1, 2019 - October 1, 2025

Led frontend development for a global fintech SaaS platform with 7M users. Implemented fundamental changes in content and performance across the Company Report Summary and Valuation sections to improve UX and content accuracy. Conducted multiple experiments on the Company Report, Screener and Discover sections, increasing user registrations by 2% and WAU by 2%. Developed a brand-new Stock page aimed at increasing organic traffic for key SEO terms such as Company Stock Price, resulting in sustained traffic growth. Adopted Cursor as AI-assisted editor to accelerate feature development, reduce debugging time, and improve code quality. Delivered various SEO initiatives and fixes to reduce SEO-reported errors and restore organic traffic to healthy levels. Continuously optimised Core Web Vitals to enhance SEO and UX and to maintain a consistently healthy level of Good URL rate. Implemented the first iteration of the new dashboard highlighting the main Portfolio features, aligning with the co

Software Engineer (Frontend) at Thrive Collective

February 1, 2018 - July 1, 2019

Enhanced the Ready-Meals Planner web application and reduced user complaints by over 60%. Led requirements analysis, design, and development of capture workflow solutions for document digitisation, data extraction, and archiving.

Senior Solution Consultant at ARM IT Group

March 1, 2011 - February 1, 2018

Communicated with clients by translating technical jargon into clear language, clarified scope, and managed expectations. Led end-to-end project roles including project management, solution development, and customer training. Served as lead for Ephesoft implementation at DBS Bank in Singapore, delivering a large-scale document automation project on time and within scope.

Software Engineer at BizExpress Pty Limited

July 1, 2010 - March 1, 2011

Delivered CMS-enabled websites and small business applications using PHP, Joomla, MySQL, HTML, and JavaScript. Performed CMS setup, custom templates, database integration, and performance optimization for local clients in retail and services.

Software Engineer (Freelance) at Caracas, Venezuela

January 1, 2003 - June 1, 2010

Communicated with clients by translating technical jargon into clear language, clarified scope, and handled revisions. Delivered end-to-end freelance software solutions including CMS setup, templates, and custom development.