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Cristopher Areche Guillen

@cristopherareche

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Front-end developer focused on building performant, accessible web and mobile applications.

Dominican Republic

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What I'm looking for

I seek front-end or mobile roles where I can build performant, accessible user interfaces, work in collaborative Agile teams, and continue growing technical skills.

I am a front-end developer with experience delivering web and mobile applications for finance and healthcare clients, combining strong UI skills with backend integration knowledge.

At SII I developed and migrated applications to Flutter and .NET MVC, improving performance by 30% and contributing to redesigns for major Dominican banks under strict security and quality requirements.

I built frontend applications with React, Tailwind CSS and Redux Toolkit at Makisan Tech, and delivered responsive marketing and document-driven pages as a freelance SDE at CoopInnovadores using SCRUM workflows and Vercel deployments.

I hold a Bachelor of Applied Science in Computer Science & Information Security and multiple web development certificates, and I continuously learn new tools to deliver reliable, maintainable solutions.

Experience

Work history, roles, and key accomplishments

Front-end Web Developer

Sistemas Integrados de Informatica

Dec 2023 - Jul 2025 (1 year 7 months)

Developed mobile and web applications for major Dominican banks using Flutter, Angular.js and .NET MVC; migrated apps to Flutter improving performance by 30% and met strict financial security and quality standards.

Flutter Angular C MVC JavaScript HTML CSS SQL Server Git

Frontend Developer

Makisan Tech

Apr 2023 - Aug 2023 (4 months)

Built a frontend web app for a healthcare client using React.js, Tailwind CSS and Redux-Toolkit, improving accessibility and UX while introducing Git and GitHub for version control.

React Tailwind React Redux HTML JavaScript Vercel Git Accessibility

Freelance Frontend Developer

CoopInnovadores

Apr 2022 - Dec 2022 (8 months)

Led the end-to-end build of responsive, SEO-ready landing pages with gated/downloadable PDFs, event-tracked CTAs, and WCAG-compliant UI; implemented Scrum rituals, CI/CD, and analytics funnels to improve web-to-mobile engagement and lead capture.

JavaScript React HTML CSS Vercel Agile Scrum Responsive Design

Education

Degrees, certifications, and relevant coursework

John Jay College of Criminal Justice

Bachelor of Applied Science, Computer Science & Information Security

2020 - 2022

Grade: 3.0

Activities and societies: Completed a Bachelor of Applied Science in Computer Science & Information Security.

The Bachelor's Degree in Computer Science and Security Information at John Jay College of Criminal Justice combines computer science principles with a focus on cybersecurity in the context of criminal justice. Students learn about programming, network security, cryptography, and digital forensics. Graduates are prepared for careers in cybersecurity, information assurance, and computer forensics.

Borough of Manhattan Community College

Associates Degree, Computer Information Systems

2017 - 2020

Grade: 3.0

The Associate's Degree in Computer Information Systems at Borough of Manhattan Community College provides a practical foundation in computer technology. Students learn programming, database management, networking, and web development. Graduates can pursue careers as support specialists, network administrators, or web developers.