ANGEL ROSARIO

Portrait of a man with blue eyes wearing a black suit and shirt against a black background.

Career Summary

A focused overview of my experience, technical background, and professional growth in the Computer Science field.

General Summary

Highly motivated and results-driven Full-Stack Web Developer with over 8 years of experience designing, developing, and maintaining scalable web applications and enterprise solutions. Experienced across modern frontend and backend technologies, with a proven track record of delivering high-quality software that enhances user experience and operational efficiency. Skilled in collaborating with cross-functional teams, leading technical initiatives, mentoring developers, and driving projects from concept to deployment in Agile environments.
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Professional Experience

Every role has been a chapter in the journey — each one adding new challenges, new lessons, and new opportunities to grow. Together, these experiences have shaped the way I think, build, and contribute as a developer and creative professional.
Jul 2016 - Dic 2017

Developer Intern

Knowledge Power Group
I began my journey as a developer through an internship at the company, where I was introduced to the foundations of professional software development and collaborative project work. One of my first responsibilities involved contributing to the development of a Windows Universal App version of one of the company’s proprietary solutions, designed as a more streamlined and simplified adaptation of the original platform.
This early experience gave me the opportunity to not only work directly on product development, but also to support other developers across their tasks and ongoing initiatives. It marked the beginning of my growth in a fast-paced technical environment, where I started building the skills, discipline, and perspective that would shape my path as a developer.
Group of eight people posing beside a lit Christmas tree in a modern office with an orange wall logo.

Junior Web Developer

Knowledge Power Group
Redesigned and optimized the company’s main SaaS application, focusing on improving the overall performance and efficiency of the front-end experience. As a result of these enhancements, the speed of the front-end application was improved by more than 50%, contributing to a smoother and more responsive user experience.
Served as the lead developer for all CMS-related projects, working across platforms such as WordPress, Joomla, and Squarespace. In this role, I consistently delivered projects with fast turnaround times while effectively balancing responsibilities across multiple company initiatives.
Jan 2018 - Apr 2020

Web Developer & Marketing Creator

Angros Creations
I led the development of multiple high-quality web applications for key clients, with a strong focus on performance, usability, and conversion-driven design. Throughout these projects, I collaborated closely with stakeholders to understand their goals and deliver tailored digital solutions that not only met business needs, but also contributed to increasing client acquisition and retention for the company.
In addition to my development work, I played an important role in the creation of marketing materials for both internal company branding and client campaigns. This included producing photo and video content designed to strengthen brand visibility, enhance audience engagement, and support broader marketing strategies through visually compelling and purpose-driven media.
Apr 2020 - Jan 2026

Web Developer I

INVID | 2020 - 2022
Collaborated with UI/UX designers to develop responsive, accessible, and reusable interfaces using Material UI and Bootstrap.

Implemented lazy loading, dynamic imports, and state management best practices to improve user experience across high-traffic pages.

Optimized front-end performance metrics, including LCP, CLS, and FID, contributing to stronger Lighthouse scores and improved SEO performance.

Contributed to the development of scalable client-facing web applications using Angular, ASP.NET, and MySQL.

Web Developer II

INVID | 2022 - 2025
Improved the performance of an internal Angular application by optimizing the front-end codebase, resulting in a 25% increase in application efficiency.

Led the integration of third-party services such as Stripe and Auth0 to support secure payment processing and scalable authentication flows.

Mentored junior developers and conducted code reviews to strengthen code quality, consistency, and maintainability.

Delivered internal technical presentations on Angular features and CMS tools such as WordPress to support knowledge sharing across the team.

Web Developer III

INVID | 2025 - 2026
Delivered a scalable web application for a major client using Angular, ASP.NET, and MySQL, achieving full client satisfaction and helping secure a high-value follow-up project.

Led a cross-functional team of 4 developers and 2 QA engineers, successfully delivering projects on time with minimal bug turnaround and change rework.

Served as the technical liaison between developers and business stakeholders, translating project requirements into effective and scalable technical solutions.
Jan 2026 - Present

Independent Contractor

Self-Employed
My journey has now led me into a more independent chapter — one where I work as a self-employed contractor, offering services in Web Development, IT Consulting, Video Production, Photography, and Graphic Design. It’s a path that reflects the full range of who I am: someone shaped by both technology and creativity, and driven by the desire to turn ideas into meaningful, well-crafted work.
This journey has shaped me into a well-rounded professional who values versatility, purpose, and execution. Whether I’m developing a web application, consulting on digital solutions, producing visual content, or helping shape a brand’s presence, my goal remains the same: to create work that is thoughtful, impactful, and built with intention.

Education

BSc in Computer Science
University of Puerto Rico - Bayamón
(2012 - 2017)
Languages
(Fully bilingual written and verbally)
Spanish
English

Key Achievements

Every milestone tells part of the story — moments where challenge met opportunity, and where leadership, innovation, and execution turned effort into meaningful impact.
2025
1st Place – INVID Internal Development Contest

Awarded first place in the company’s internal development competition by building a high-performing solution using INVID’s proprietary framework. Recognized for innovation, technical execution, and effective use of internal tools.

2024
Led Agile Turnaround for Delayed Project

Spearheaded the adoption of Agile practices as the appointed lead developer on a critical project that was falling behind schedule. Successfully restructured workflows and improved team coordination resulting in the project being delivered on time without compromising quality.

2023
Lead Developer on Key Project

Directed a critical project for the Department of Health of Puerto Rico, which involved coordinating both front and back-end teams while delivering under tight
deadlines.

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