I am a systems engineer with over 14 years of experience specializing in software development across various technologies including web, database, and mobile applications. I thrive on solving IT-related problems and improving processes, bringing strong skills in agile methodologies and team collaboration. I have advanced expertise in Angular, React, TypeScript, .Net Core, SQL Server, and database modeling with PL/SQL. Fluent in English and Spanish, I am equipped to work effectively in multinational teams while continually adopting new technologies.

Diego Armando Perez O

I am a systems engineer with over 14 years of experience specializing in software development across various technologies including web, database, and mobile applications. I thrive on solving IT-related problems and improving processes, bringing strong skills in agile methodologies and team collaboration. I have advanced expertise in Angular, React, TypeScript, .Net Core, SQL Server, and database modeling with PL/SQL. Fluent in English and Spanish, I am equipped to work effectively in multinational teams while continually adopting new technologies.

Available to hire

I am a systems engineer with over 14 years of experience specializing in software development across various technologies including web, database, and mobile applications. I thrive on solving IT-related problems and improving processes, bringing strong skills in agile methodologies and team collaboration.

I have advanced expertise in Angular, React, TypeScript, .Net Core, SQL Server, and database modeling with PL/SQL. Fluent in English and Spanish, I am equipped to work effectively in multinational teams while continually adopting new technologies.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Advanced
Spanish; Castilian
Fluent

Work Experience

Sr. Frontend Software Developer, UX Engineer at Securian Canada
January 1, 2025 - August 16, 2025
Developed frontend applications using Angular versions 13 through 18 with TypeScript and Bootstrap, integrating with .Net Core Restful APIs. Worked within SCRUM teams utilizing Azure DevOps, GitHub, and CI/CD pipelines to deliver scalable, high-quality software solutions.
Sr. Frontend Developer at Cognizant Technology Solutions
March 1, 2023 - August 16, 2025
Led frontend development efforts with React and TypeScript, implementing unit tests using Jest and styling via Sass and Tailwind. Managed complex GraphQL data architectures with Hasura and Apollo, and employed Docker, Azure DevOps, and CI/CD pipelines in an Agile SCRUM environment.
Frontend Developer at Lambton College
July 1, 2021 - August 16, 2025
Built frontend features using Angular 7 combined with TypeScript, CSS3, and Bootstrap, consuming SqlServer-backed Restful APIs. Collaborated in cloud environments with Azure and containerized workflows using Docker and .Net Core 2.2.
Angular Developer at Toronto District School Board (TDSB)
December 1, 2020 - August 16, 2025
Developed Angular 8 web applications with TypeScript, CSS3, and Bootstrap, integrating with SqlServer and Restful APIs. Utilized Azure cloud services, Docker containers, and ASP .Net for backend support.
Oracle and PHP Developer at Telebucaramanga S.A
April 1, 2018 - August 16, 2025
Created and maintained applications using PHP, JavaScript, JQuery, and Oracle databases including Forms and Reports. Developed PL/SQL procedures and styled interfaces with CSS3 and Bootstrap.
Web Developer at My Practice Now
November 1, 2015 - August 16, 2025
Developed PHP and JavaScript web solutions using MySql databases and front-end technologies including JQuery and CSS.
PHP, Oracle and Mobile Developer at Universidad Autonoma de Bucaramanga
January 1, 2015 - August 16, 2025
Developed mobile and web applications using Objective-C, Java (Android), PHP, JavaScript, Ajax, JQuery, Oracle Forms and Reports, PL/SQL, and Bootstrap. Built Restful APIs to support frontend applications.
Software Developer at Fundación Cardiovascular de Colombia
January 1, 2013 - August 16, 2025
Developed Java EE applications and JavaScript frontends styled with CSS and JQuery. Utilized SqlServer backend with frameworks such as PrimeFaces to build Restful APIs and web applications.
Web Developer at Aktivia Networks
January 1, 2011 - August 16, 2025
Developed web applications with C#.Net, ASP.Net, Silverlight, JavaScript, CSS, and SqlServer backend.

Education

Bachelor in System Engineer at Universidad Autonoma de Bucaramanga
January 1, 2001 - January 1, 2008
Specialist in Advanced Technologies for Development Software at Universidad Autonoma de Bucaramanga
January 1, 2011 - January 1, 2012
Computer Software and Database Development at Lambton College
January 1, 2019 - September 1, 2020
English as a Second Language at Lambton College
September 1, 2018 - December 1, 2018

Qualifications

Bachelor degree in Systems Engineering
January 1, 2001 - January 1, 2008
PostGraduate diploma in Computer Software and Database Development
January 1, 2019 - September 1, 2020

Industry Experience

Software & Internet, Education, Telecommunications, Healthcare, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more