Jonas Costa Email & Phone Number

Saint Paul, Mn, Us

St Paul, Minnesota, United States

• Develop a comprehensive suite of 100 unit tests designed with the NUnit framework to assess and validate the functionality of controller functions, allowing early error diagnosis.• Create a proof-of-concept application leveraging Azure and Microsoft Graph to allow seamless user authentication and email transmission for enhanced user experience and streamlined communication.• Completed a comprehensive 2-month hands-on training program, utilizing C#, Angular, Entity Framework, and .NET core, to successfully implement an employee time-tracking application.

Stillwater, Minnesota, United States

• Convert 23 legacy stored procedures from SQL to Entity Framework functions, improving code reusability and maintenance while preserving functionality and correctness.• Optimize front-end sales tax calculation, detecting and removing a 0.11% overcharge on appointment items, as well as applying the correct taxes for each situation, using Typescript.• Refactor over 15 bugs concerning formatting using CSS and Angular, providing the client with a precise and friendly user interface that satisfies their needs.

St Paul, Minnesota, United States

• Conducted weekly office hours for up to 50 students to answer questions about assignments, help test and debug code written in Java, and clarify concepts about object-oriented programming and abstraction.• Delivered timely and thorough feedback on homework for 10 students a week, ensuring that their code is correct, efficient, and well-written and diagnosing areas for improvement.

St Paul, Minnesota, United States

• Facilitated weekly conversations in Portuguese with the 3 house residents, strengthening their speaking and listening competencies in addition to creating a positive and clean home environment.• Organized and hosted 3 campus-wide semestral events showcasing the culture and history of Lusophone countries through games, conversations, music, and food.

St Paul, Minnesota, United States

• Investigated current accessibility challenges present in different technologies used by children by examining over 20 academic articles under the guidance of Dr. Lauren Milne.• Built an optimized version of Blockly, Google's library for building block-based visual programming editors, fixing more than 50 bugs that prevented its use by people who use screen readers.• Devised a user study of 15 tasks using HTML, CSS, and JavaScript to teach programming to children with vision impairments through nursery rhymes recreated with Blockly.

St Paul, Minnesota, United States

• Assembled a searchable map storing data about 450 support programs for people with substance issues, using Google Maps API, Node.js, and MongoDB, which decreased phone wait time for patients by 75%. • Engineered such map into a responsive web application, from concept through deployment, including the selection of appropriate filters, logic sequence, and implementation of an engaging user interface.• Collaborated with 4 other developers in an Agile environment to design and develop the company’s patient-facing app, discussing database choice, data modeling, and compliance with privacy laws.

Bachelor'S Degree, Computer Science And Mathematics

High School Diploma, Bilingual Diploma International Baccalaureate