Sebastian Lian Carmagnola
Software Engineer

Bilingual software developer fluent in English and Spanish, with experience in full-stack development, RESTful API integration, and user-centered design. I’m passionate about building impactful, inclusive technology that addresses real-world challenges. During my undergraduate studies, I contributed to a variety of projects and ranging from full-stack web applications to AI-integrated software systems. I also worked as a Learning Spaces Student Assistant, and now Classroom Technology Specialist, where I earned several Creston Certifications ranging from technician to programming.. I’m currently seeking full-time opportunities where I can apply my programming skills, collaborate with innovative teams, and continue growing as a software developer.

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sebastian

Education

Completed

CUNY Borough of Manhattan CC

Associates of Arts in Liberal Arts

Dean's List 2014, 2015 and 2016

Completed

Georgia Gwinnett College

Bachelor's of Science in IT Software Development

Dean's List 2022, 2023

Upcoming

Georgia Institute of Technology

Master's Degree in Computer Science

Expected graduation: 2028

Skills

Proficient in a wide range of programming languages, frameworks, and technologies, with hands-on experience in developing scalable software applications, designing and managing databases, third-party API integration, and implementing interactive web and AI-driven solutions. Experienced in machine learning model development, backend API integration, and full-stack development, leveraging industry-standard tools and frameworks to build efficient, secure, and user-centric applications.

Programming Languages & Frameworks
Java JavaScript HTML5 CSS3 Python React.js Node.js Express.js SQL PHP
Libraries
Bootstrap Material-UI Axios Scikit-learn Pandas NumPy Pickle Chart.js
Database & APIs
MongoDB MySQL Firebase Google Cloud APIs Anthropic API RESTful APIs
Tools
Git Jira Postman Selenium SQL Developer Mongo Modeler Trello
Core Competencies
Full Stack Development Agile Methodologies Version Control System Design Authentication (OAuth2, JWT) Database Design SDLC* Model Optimization & Training Prompt Engineering

Technical Strength Snapshot

Self-assessed technical proficiency across key development domains
*SDLC: Software Development Life Cycle

Experiences

Results-driven software developer with real-world experience building scalable full-stack applications, modernizing legacy systems, and collaborating directly with stakeholders to deliver impactful solutions. Adept at translating client needs into robust web platforms using React, Node.js, and MongoDB, while applying Agile methodologies to guide team contributions. Demonstrated success in optimizing backend performance, enhancing user experience, and leading junior developers through effective version control, code reviews, and sprint planning. Passionate about creating efficient, maintainable systems that solve real-world problems.

Software Development Intern

Next Generation Focus @ Georgia Gwinnett College
Jan 2025 – May 2025

Redesigned and deployed family/admin portals. Refactored legacy code, improved REST API integrations, and collaborated directly with stakeholders to enhance user experience and system performance.


Languages
JavaScript HTML5 CSS3 Bash
Frameworks
React.js Express.js Node.js
Tools
Git Trello

Accomplishments
  • Developed and optimized RESTful APIs to streamline data exchange between frontend and backend services.
  • Enhanced authentication, input validation, and role-based access control for 100+ users.
  • Refactored and optimized JavaScript legacy codebase to improve maintainability and reduce bugs by 20%.
  • Boosted backend efficiency by restructuring MongoDB queries and schema designs.
  • Managed Git workflows and sprint planning.
  • Integrated third-party APIs and build new features such as, staff registration, admin management tools, password reset, and mass messaging via email and mobile.

Projects

A diverse collection of projects demonstrating my expertise in software development, machine learning, backend engineering, and full-stack application development. My work spans predictive analytics, database management, web applications, and AI-driven solutions, utilizing Python, JavaScript, SQL, MongoDB, React, and cloud-based APIs. Each project showcases my ability to design and implement scalable, user-focused applications, integrate machine learning models, and optimize backend systems for performance and security.

Java

Collaboratively designed a dystopian-themed text-based adventure game, authoring an extensive Software Requirements Specification (SRS) document and developing MVC and Class Diagrams via Lucid Chart to elucidate class interdependencies, culminating in a co-developed game aligned with SRS directives.

Waterfall Methodologies Object-Oriented Design File I/O
100%

Java

Crafted an immersive dystopian-themed text-based adventure game in Java, integrating multiple classes (Game, Player, Room, Map, Monsters, Items) to enrich gameplay, with a design architecture that dynamically reads room and connection data from a text file.

Waterfall Methodologies Object-Oriented Design File I/O
100%

SQL Oracle SQL Developer

Spearheaded the creation of a comprehensive Online Video Game Store database utilizing Oracle SQL Developer, meticulously designing the schema and constructing multiple tables, while executing thirteen test queries to validate functionality and collaborating on future query development.

Database Design Test Queries
100%

Java SQLite

Developed a program that found ten dates with the lowest prices for five hotels in five cities, starting from May 1st of the current year to the last possible date on the calendar. The data was stored in an SQLite database to aid with data collection and analysis process for pricing trends and opportunities for cost savings.

Object-Oriented Design Price Optimization
100%

PHP SQL HTML5 CSS3 XAMPP

Engineered a dynamic coffee shop website utilizing PHP and MySQL for robust back-end functionality, complemented by an engaging front-end design crafted with HTML, CSS (Materialize), enabling seamless user interactions for data management.

Full Stack Development UI/UX Database Design
100%

JavaScript React Node.js Express.js Discord.js

Led the development and enhancement of a Discord bot using the MERN stack, integrating a React-based web dashboard to optimize server management and streamline user engagement. Spearheaded the creation of additional functionalities for text, voice, and reaction monitoring to improve inactivity tracking across channels. Developed a secure authentication system with Discord OAuth2 for role-based access, ensuring secure user interactions. Leveraged MongoDB for real-time logging, enabling continuous and accurate data tracking, which enhanced bot responsiveness. Optimized backend operations using Node.js and Express.js for efficient server communication and seamless interaction, contributing to a robust administration toolkit for server admins.

Full Stack Development Database Design Agile Methodologies Jira Git Authentication (OAuth2, JWT)
100%

JavaScript React Node.js Express.js Python Google Cloud NLP Anthropic

Evolved from a Georgia Tech AI Hackathon into a full-stack capstone project for real-time mental health analytics. Developed a context-aware mental health chatbot using prompt engineering to deliver emotionally relevant responses. Integrated Google Cloud NLP via RESTful APIs for 95% accurate sentiment analysis and longitudinal mood tracking. Engineered a K-Means pipeline in Python to map sentiment to emotional states; visualized trends using Chart.js. Managed a scalable backend infrastructure, supporting chat bot logic, sentiment insights, and user-facing analytics.

Full Stack Development Agile Methodologies Jira Git AI Integration Machine Learning Database Design Model Optimization & Training
75%

Python Scikit-learn

Developed during a hackathon using a publicly available breast cancer dataset from Kaggle. Created a machine learning model for breast cancer prognosis, achieving 90%+ accuracy using Random Forest and SMOTE to balance the dataset. Optimized feature engineering and hyperparameters via GridSearchCV, integrating histology-stage interactions and age group bins for improved predictions.

Full Stack Development Feature Engineering Machine Learning
100%

JavaScript HTML5 CSS3

Designed and developed a responsive, landing page for a local automotive business owner. The page included organized sections, smooth scroll navigation, mobile-first design, services & reviews carousels, and faq section.

Upcoming Features: Integration of Customer Portal

Full Stack Development UI/UX Git
25%

Get in Touch

Let's connect and chat about all things tech — I'm always up for an engaging conversation!

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