Carlos Ruiz Desarrollador

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Freelancer

Jan 2017 - Current (9 years 10 months)

• Reduced by 80% the time expended in data manipulation and increased the time expended in decision-making by developing a forecasting and inventory management application. • Reduced by 15% the container shipping cost by developing an application to optimize the quantities of products needed in each order. • Improved decision-making and reduced costs by 25% through data analysis and visual location models for public wifi stations. Tech-Stack: JavaScript, ReactJS, Python, PostgreSQL, Redux, Heroku, Bootstrap, HTML, CSS.

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Software Developer

ProfesionalIndependiente

Jan 2017 - Current (9 years 10 months)

Design, develop, and deploy production web applications for startups and small-to-medium businesses across multiple industries. Lead frontend development using React and Next.js, delivering scalable and high-performance user interfaces. Integrated third-party services including payment gateways, WhatsApp APIs, Trulioo, and OpenAI to support secure onboarding, messaging, and AI-powered features. Partner with clients to translate business requirements into well-structured UI architecture and product-ready features.

Desarrollador de front-end

beu

May 2024 - Jan 2025 (9 months)

Played a key role in leading the frontend development of a web application from scratch, implementing reusable UI components and scalable architecture using React, Next.js, and TypeScript. Integrated REST APIs and frontend state management to deliver responsive, high-quality user experiences.

Frontend Software Engineer

beu

Jan 2024 - Jan 2025 (1 year 1 month)

• Implement new features to meet requirements from design following SOLID principles. • Plan delivery process to meet expected goals.

Full Stack Developer

Theta

Dec 2022 - Dec 2023 (1 year 1 month)

Developed and shipped new features for admireme.com, a production web application, using React and Next.js. Improved application performance and user experience by refactoring existing codebases and implementing modern frontend best practices. Collaborated with cross-functional teams to deliver scalable features supported by AWS serverless services.

Software Engineer

Theta

Dec 2022 - Oct 2023 (11 months)

• Refactor code to increase functionality and usability. • Reduced the number of bugs in web applications by developing new features and implementing improvements.

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Theta

Dec 2022 - Oct 2023 (11 months)

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Frontend Software Engineer

Gamma consulting

Oct 2018 - Dec 2022 (4 years 3 months)

• Increased productivity by 25% by adding new features to web apps used for decision-making. • Increased visibility and engagement by 75% by implementing a new portal. • Reduced by 50% the number of bugs in mobile and web applications by developing new features and implementing improvements. • Reduced logic and code complexity by 20% by refactoring and updating existing web and mobile applications.

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Desarrollador de front-end

Gamma Consulting Colombia

Oct 2018 - Dec 2022 (4 years 3 months)

Maintained and enhanced production web applications using React and Next.js. Refactored legacy codebases to improve maintainability and performance. Collaborated with cross-functional teams to deliver ongoing improvements.

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Consultor de empresas

ProfesionalIndependiente

Jan 2008 - Sep 2021 (13 years 9 months)

Senior Consultant in operations and inventory management, using optimization techniques through software and information technologies.

Associate Professor

Escuela Colombiana de Ingeniería 'Julio Garavito'

Oct 2006 - Sep 2021 (15 years)

I had research, teaching and managerial responsibilities at the Industrial Engineering Department. I was Director of the graduate program in Operatios Management, Director of the Department of Optimization. My fields of study werae: Applied Optimization | Data Science | Operations and Inventory Mangement

Carlos Ruiz

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Carlos Ruiz

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