Computer Science Student at University of Waterloo
Hi, I'm Ossama Elhelali
A passionate Full-Stack Develope
Computer Science student with 2+ years of experience building scalable applications. Currently interning at MedSender, where I've reduced system latency by 90%+ and achieved 99.3% accuracy in ML models. Passionate about full-stack development, machine learning, and creating impactful solutions.
2+Years Experience
10+Projects Built
5Internships
More About Me
May 2025
Jan 2025
May 2024
Jan 2024
Sep 2023
May 2023
Software Engineer Intern
MedSender
- Designed and launched a new API email system by integrating Mailgun webhooks, building relational tables for messages/attachments, and developing portal UI for developer management and AI processing.
- Engineered an asynchronous, batched delivery system enabling one-click distribution of documents to 50+ recipients, reducing delivery time from minutes to seconds and manual work by 98%.
- Achieved 99.3% provider recognition accuracy (+30% over baseline) by architecting and fine-tuning a domain-specific NLP model and prompt, validated against golden datasets.
Technologies Used:
Software Engineer Intern
MedSender
- Reduced transaction latency 90%+ by replacing a legacy RPA process with a 5+ feature API system, streamlining high-volume client workflows.
- Cut down ML hallucinations by 35% and latency 40% by adding fuzzy detection and caching logic.
- Accelerated onboarding time by 90% by Dockerizing the app and incorporating SQL, Redis, and ELK stack.
Technologies Used:
Software Engineer
BIC UWaterloo
- Developed multiple sponsor pages that curated to each clients' highlights and benefits.
- Improved search performance by 20% through implementing dynamic filters and optimizing database sanitation.
- Cut email manual errors by 30% through automated email workflows using Google App Script.
Technologies Used:
Fullstack Developer Intern
Kanna Technologies
- Led the migration of a full-stack service from Lotus Notes and HTML to Typescript, React, Node, and SQL.
- Reduced API overhead by 87.5% through deep analysis of workflows and callbacks, improving overall performance.
- Created SQL backend and middleware agents to represent data in a visually appealing format on the frontend.
Technologies Used:
Software Engineer
Coach Chihab Group
- Built a check-in platform that reduced guest check-in time by 95% and managed over 50 attendees.
- Utilized Firebase Real-time Database API for dynamic attendee check-in monitoring and visualization.
Technologies Used:
Software Engineer Intern
MD
- Reduced API overhead by 34% through payload size reduction and lazy loading implementation.
- Cut drop-off rates by 12% by streamlining the signup and data collection process.
Technologies Used:
LinkedPin
On the chrome store soon: An AI-powered Chrome extension that summarizes and automates reminders for saved LinkedIn posts, built with React frontend and Java/Spring Boot backend with PostgreSQL database.Check It Out
Chess
A a full chess game in C++ using advanced OOP, implemented features like checkmate, castling, and more.Check It Out
Sortify.AI
An ML-powered app for real-time waste sorting, featured at UTM's 2023 DeerHacks Hackathon.Check It Out
NeighBoard
A Vue.js-based community platform for sharing neighbourhood activities and reports.Check It Out
FundFlow
An efficient web-based banking app for real-time account management and transactions.Check It Out
University of Waterloo
Bachelor of Computer Science
Sep 2022 - Present
Relevant Coursework
Algorithm Design and Data Abstraction
Object-Oriented Software Development
Intro to Optimization
Data Structures and Data Management
Compilers
Algorithm Design and Data Abstraction
Wilfrid Laurier University
Bachelor of Business Administration
Sep 2022 - Present
Relevant Coursework
Financial Accounting
Managerial Accounting
Business Statistics
Microeconomics
Macroeconomics
Marketing Management
Operations Management
Organizational Behavior
Business Law
