Sasan Esfahani
SE

Software Engineer & Data Scientist

I'm a Computer Science student at UCLA who loves building innovative solutions with modern technologies. I have experience in full-stack development, compilers, machine learning, and I'm a big Linux enthusiast. When I'm not coding, you can find me enjoying electronic music, practicing yoga, or camping outdoors.

Contact Me
Software Engineer
MarketPlace.UpTk.io • Aug 2024 - Present
  • Developed a full-stack revenue-generating web application with another peer, built from scratch, to transform a startup's business model, streamline operations, and automate collaboration between TikTok shops and affiliates
  • Set up a MongoDB Atlas database; built Next.js API routes in TypeScript; used AWS Lambda and CloudWatch to run CRON jobs; scraped TikTok data and stored it in RDS for faster structured queries
  • Leveraged AWS CloudFront to cache and deliver S3 images faster, enhancing performance and user experience
  • Built a responsive UI using Next.js and Tailwind CSS, integrating Stripe API for secure subscription and affiliate payments. Leveraged SSR and local storage for caching key data and improving load times
  • Implemented NextAuth with JWT for secure user authentication, supporting multiple roles and permissions
  • Used Vercel for CI/CD to automate deployments after successful Git builds, with ESLint ensuring code quality
  • Collaborated with users to gather feedback, design and implement Agency-level subscriptions, enhance usability, and prioritize features while optimizing the app for high availability through robust software engineering practices
Data Science Intern
Edwards Lifesciences • June 2024 - Aug 2024
Hello Doc ProjectHello Doc Project
  • Developed a full-stack web application using Python, Next.js, and JavaScript, hosting Large Language Models on in-house AWS GPUs to keep sensitive clinical data confidential. Built the backend in Python with NLP optimizations and collaborated with biostatisticians to design an intuitive UI tailored to their needs
  • Built a block-based, AI-powered text editor and document reader using LLaMA 7B, Hugging Face, and LlamaIndex for RAG (Retrieval-Augmented Generation) to analyze long contexts efficiently. Added chain-of-thought reasoning and flash attention to deliver faster and more logical responses
  • Drew API diagrams, and authored Technical Design Documents and Product Requirement Documents to meet FDA standards. Presented the project to the CEO, translating technical details into business value
  • As part of a team, won the Best Preprint Award in the PhysioNet Challenge 2024 by fine-tuning Segment-Anything Meta and experimenting with YOLO v7 for paper ECG digitization. Dockerized the model and used PyTorch, TorchVision, Scikit-Image, and Tesseract OCR to process paper ECG data efficiently
Tutor
OCC Student Success Center • June 2021 - June 2022
  • Tutored students in C++, Java, and Calculus, adapting to diverse learning styles, leading group tutoring sessions of up to 25 students, and organizing crash courses to prepare for coding exams
  • Tutored a Data Structures class in C++, drawing objects on the heap as students coded on paper, reinforcing memory management and object-oriented concepts through hands-on exercises and visual learning
  • Earned a tutoring certificate with training for working with students with disabilities. Gained professional experience, balancing independent problem-solving versus seeking help from my manager