Cristopher Areche Guillen
Cristopher Areche Guillen

Software Engineer

Actively looking · Member since 2 Oct 2025
Message
Location
United States
Desired salary
from 23 USD/hourly
Work preference
Full Time
Experience level
Not set

About

Professional summary

I am a Software Engineer who builds clean, reliable websites and mobile apps using React and the .NET Framework. I focus on simple, fast, and accessible user interfaces backed by solid engineering principles. Throughout my career, I have delivered secure, high-performance features for major Dominican banks, serving large regional user bases such as Promerica, which has over 3.7 million customers across Latin America.

In my professional experience, I have developed mobile and web applications using technologies like Flutter, Angular.js, C#, and the .NET Framework, demonstrating my ability to create fluid and functional user interfaces across multiple platforms. I successfully increased application performance by 30% by migrating from Angular.js to the Flutter framework, which led to reduced load times and improved user satisfaction on various mobile platforms.

I have built and redesigned web platforms for leading Dominican banks including Promerica, BLH, ADEMI, and BSC, working on critical and sensitive projects that meet the security and quality standards required by the financial industry. I am adaptable to changing requirements and have built solutions tailored to client specifications.

Committed to continuous learning and professional development, I stay abreast of the latest industry trends and technological advancements. I have experience working with a comprehensive tech stack including C#, .NET Framework, TypeScript, jQuery, HTML, CSS, Bootstrap, SQL Server, Git, Bitbucket, Flutter, and Dart.

Previously, I worked as a Frontend Developer in Argentina, where I built frontend web applications for healthcare institutions using React.js, Tailwind CSS, and Redux Toolkit. I delivered clean user interfaces that improved overall user experience and implemented Git/GitHub branching strategies and PR reviews to reduce merge conflicts and accelerate releases.

As a freelance Software Engineer, I spearheaded the development of responsive landing pages with downloadable PDF functionality and implemented SCRUM agile workflows to ensure timely project completion. My tech stack includes JavaScript, React-bootstrap, React, CSS, HTML, and Vercel.

I hold a Bachelor of Applied Science in Computer Science & Information Security from John Jay College of Criminal Justice and an Associate Degree in Computer Information Systems from Borough of Manhattan Community College. I have also completed multiple online courses and bootcamps to enhance my skills in JavaScript, React, and full stack web development.

Skills

26 capabilities

Experience

Career history

Front-end Web Developer Sistemas Integrados de Informatica, Dominican Republic

Developed mobile and web applications using Flutter, Angular.js, C# and .Net Framework showcasing the ability to create fluid and functional user interfaces across multiple platforms. Increased application performance by 30% by migrating from Angular.js to Flutter framework, reducing load times and improving user satisfaction across multiple mobile platforms. Built and redesigned web platforms for leading Dominican banks including Promerica, BLH, ADEMI, BSC and others, meeting security and quality standards required by the financial industry. Adapted to changing requirements and built solutions for a banking app that met client specifications. Committed to continuous learning and professional development. Employed a comprehensive Tech Stack encompassing C#, .NET Framework, TypeScript, jQuery, HTML, CSS, Bootstrap, SQL Server, Git, Bitbucket, Flutter & Dart.

Frontend Developer Makisan Tech, Argentina, Buenos Aires

Built frontend web application for healthcare institution using React.js, Tailwind CSS, and Redux Toolkit. Delivered a clean user interface that improved the overall user experience. Implemented Git/GitHub with a branching strategy and PR reviews, reducing merge conflicts and accelerating releases. Employed a comprehensive Tech Stack encompassing React.js, Tailwind CSS, Vercel, and Redux Toolkit.

Freelance Software Engineer Freelance Software Engineer (Front-end / Full-stack)

Spearheaded the development of a compelling landing page featuring a downloadable and reviewable PDF document functionality. Orchestrated the planning of a responsive web-mobile design, structuring the website for optimal user engagement. Implemented an efficient SCRUM agile workflow, ensuring seamless task distribution and timely project completion. Utilized a robust Tech Stack including JavaScript, React-bootstrap, React, CSS, HTML, Vercel, and Vercel form.

Education

Learning history

John Jay College of Criminal Justice, New York, NY

Bachelor of Applied Science in Computer Science & Information Security

Borough of Manhattan Community College, NY

Associate Degree in Computer Information Systems

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