Yassin Benelhajlahsen Full-Stack Engineer

Yassin Benelhajlahsen

Full-Stack Engineer focused on backend systems, performance, and security • CS ’26

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About

CS ’26 @ CUNY Brooklyn College · GPA 3.6

Full-stack engineer passionate about building fast, reliable, and secure web applications.

Experienced across React, FastAPI, Node.js and PostgreSQL — from frontend UI to backend systems and cloud deployment.

Curious, adaptable, and open to SWE new-grad and internship opportunities.

I enjoy working close to the data layer — designing APIs, optimizing queries, and shipping secure systems used in production.

Experience

Software Engineer Intern at Soaper

June 2025 – Present
  • Engineered full-stack features with React, FastAPI, and PostgreSQL, reducing frontend latency by 25% through API optimizations and improved component rendering.
  • Built a multi-parameter radiology search with indexed queries, reaching single-digit millisecond indexed lookups on 120k+ rows and p95 under 20 ms API response times via batching and caching.
  • Developed scalable, reusable UI components in TypeScript, cutting feature development time by 30% while ensuring WCAG-compliant accessibility across web and mobile.
  • Collaborated with clinicians to translate medical workflows into intuitive software, improving data entry efficiency by 40% and streamlining daily documentation.
  • Contributed to HIPAA-aware features and infrastructure enhancements on AWS and Azure for reliability and scalability.

Infrastructure QA Engineer Intern at NYC Department of Education

May 2025 – Aug 2025
  • Deployed and configured servers, IP-based systems, and desktop images across NYC schools, automating setup tasks to save hours per deployment.
  • Created automation scripts that streamlined rollouts, diagnostics, and on-site audits across five boroughs, improving system reliability and support efficiency.
  • Authored technical documentation and collaborated with vendors to support district-wide infrastructure stability and compliance with IT standards.

Projects

SoaperNote

HIPAA-aware clinical notes w/ AI transcription, voice-to-edit flows, and dynamic SOAP templates as an intern with Soaper.

  • Implemented client-side AES-GCM-256 encryption using per-user non-extractable WebCrypto keys in IndexedDB for secure local data isolation.
  • Structured a modular FastAPI backend with routers for notes, subscriptions, and AI ‘magic-wand’ endpoints.
  • Integrated Firebase Auth and Firestore with Stripe subscriptions, quotas, and webhooks for secure billing and user management.

React · FastAPI · TailwindCSS · Stripe · Firebase

Architecture:

  • FastAPI service with modular routers and dependency injection
  • PostgreSQL for metadata + Firebase for auth state
  • Stripe webhooks driving subscription state
  • Client-side encryption before persistence

Scorva

Sports analytics web app for NBA, NFL and NHL.

Live Code

React · Node.js · Express · TailwindCSS · PostgreSQL · OpenAI · Jest

Sirat

Mobile Islamic utility app.

Live Code

React Native · Expo · Node.js · Express · Google Places API · OpenAI · Jest

Custom Photo Gallery

A private, password-protected photo gallery built as a gift and a real engineering project.

Code

React · TypeScript · Firebase · Tailwind CSS

More

Explore all repositories and contributions.

Browse

Open source, experiments, and more

Tech Stack & Tools

Languages:
JavaScript TypeScript Python Java C++ SQL
Frontend:
React Next.js
Backend:
Node.js Express.js FastAPI
Databases:
PostgreSQL MariaDB
Tools & Cloud:
Git GitHub AWS CI/CD Pipelines

Education

B.S. Computer Science at Brooklyn College (CUNY)

Expected Graduation: June 2026 · GPA 3.6/4.0

Relevant Coursework: Data Structures & Algorithms, Object Oriented Programming, Databases, Computer Architecture, Artifical Intelligence.

Contact

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