Hi, I'm Sethvin đź‘‹
Senior Full-Stack Engineer specializing in AI-driven product development, multi-agent systems, and scalable platform architecture. Founding engineer with expertise in PydanticAI, React, and modern development frameworks.
SN

About

Computer Science & Finance student at UT Dallas with extensive experience as a founding engineer. Specialized in orchestrating multi-agent systems, developing scalable backend services, and creating responsive user interfaces. Passionate about AI/ML, system architecture, and building products that bridge technology and user experience.

Work Experience

S

Series.so
Founding Engineer

August 2025 - Present
Lead Engineer / Lead Systems Architecture Design Engineer
Orchestrated multi-agent systems using PydanticAI and agent-to-agent (A2A) protocols, enabling reliable cross-agent workflows in production. Developed animations and responsive landing pages to enhance user conversion rates by 10% and improved cross-device compatibility. Built in-house backend services for secure user-data ingestion and enrichment, achieving 80%+ extraction accuracy. Delivered scalable platform services spanning API gateways and conversational AI agents, automating core business logic. Implemented internal iMessage delivery infrastructure using AppleScript and Mac clusters for user outbound messaging.
C

CourseBite.ai
Founding Engineer

May 2023 - May 2024
Lead Engineer / Lead iOS Engineer
Designed and implemented a full-stack bug reporting system, ensuring efficient tracking and resolution of issues. Developed animations and responsive landing pages to enhance user engagement and optimize cross-device compatibility. Created modular, reusable React components to improve code maintainability and accelerate development for the web application. Leveraged tools like Framer Motion, TypeScript, and Next.js to ensure seamless UI/UX experiences and meet modern design standards. Collaborated on strategic planning to lead the iOS development team, focusing on bridging web and mobile platforms.
A

Apple
Core OS Team

May 2023 - December 2024
Software Engineering Intern
Optimized Core System Daemons: Designed and implemented daemons supporting Apple Intelligence, reducing system latency by 30% and enhancing on-device inference capabilities across iOS, macOS, watchOS, and tvOS. Cross-Platform Framework Development: Created and integrated frameworks used by all Apple platforms, improving code efficiency by 25% through unified architecture and reducing API redundancy. Performance Testing and Bug Resolution: Increased test coverage by 40% and reduced critical bugs by 50% over four release cycles, significantly improving system stability and performance. Technical Leadership and Mentorship: Provided design guidance to multiple teams, leading to the successful delivery of complex projects and boosting team productivity by 15%.
V

Vintage IT

May 2023 - August 2023
Software Engineer
I developed and optimized a training pipeline for NLP models, leveraging hyperparameter tuning to enhance accuracy and precision by up to 20%. I created and integrated a full-stack web application using Figma and React, cutting operational costs by 25%, and designed a high-efficiency REST API, reducing latency by 60%. Utilizing Docker and AWS, I engineered scalable, secure, and modular deployment services. Additionally, I conducted data analysis on language processing experiments, producing insights that drove improvements in NLP model performance.
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Respawn Entertainment

May 2021 - August 2021
Software Engineer
I contributed to creating optimized 3D models for in-game assets and enhancing AI systems used in EA Sports games. I worked extensively with C++, Java, and Kotlin for Android development and completed an intensive, project-based p5.js curriculum led by EA engineers. I developed a climate change awareness program featuring mini-games and educational content using JavaScript, p5.js, CSS, and Java. Additionally, I led my team in problem-solving and project execution using the Scrum framework, fostering collaboration and iterative development.

Skills

Python
C++
Swift
JavaScript
TypeScript
Java
Next.js
React
Figma
TensorFlow
RAG
Transformers
PydanticAI
Docker
AWS
PostgreSQL
MongoDB
Git
XCode
REST API
NLP
Data Analysis
Distributed Systems
CI/CD
My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex web applications. Here are a few of my favorites.

S&P 500 Machine Learning Predictor

S&P 500 Machine Learning Predictor

Developed a machine learning pipeline to predict S&P 500 price movements using historical data fetched via yfinance library. Engineered dynamic features such as Close_ratio indicators to capture market trends. Built and evaluated models with Time-Series Cross-Validation, optimizing for Precision, Recall, F1-Score, and ROC-AUC metrics. Leveraged a Random Forest Classifier to deliver actionable insights, improving decision-making accuracy for users.

Python
Jupyter Notebook
Scikit-learn
yfinance
Pandas
Streamlit
Dynamic Solfége Gesture Recognition

Dynamic Solfége Gesture Recognition

Designed and implemented a real-time hand gesture recognition system for detecting solfège syllables. Leveraging Google MediaPipe for robust handmark detection, the project normalizes landmark coordinates as neural network inputs-reducing the need for large training datasets. Analyzed system performance and implemented improvements, resulting in a smoother user experience. Led regular code reviews, debugging, and performance tuning, maintaining high code quality and system reliability.

Python
OpenCV
TensorFlow
Google MediaPipe
Spotify top 1000 songs data visiualizer

Spotify top 1000 songs data visiualizer

Takes in a dataset and display visually using matplotlib, pandas, or other graphical plotting library.

Python
Jupyter Notebook
Pandas
Matplotlib
Portfolio Site

Portfolio Site

My react based portfolio

Next.js
Typescript
Contact

Get in Touch

Want to chat? Just shoot me a dm on LinkedIn
I'll respond whenever I can. I will ignore all soliciting.