Yaşar Delibaş

Projects

Competitions

  • Lumina

    First place, Mentorship phase

    Open-source study platform that uses retrieval-augmented generation to turn uploaded PDFs into quizzes, flashcards and study guides.

    May – September 2026, team of five

    What I built

    University Engagement Program 2026 Cohort, with Amazon Women in Engineering and Bilkent University

    DevOps engineer, and database and vector search engineer.

    • Designed a 40+ table PostgreSQL schema (SQLAlchemy, Alembic) with pgvector and ChromaDB for vector search, with course-level isolation enforced in the method signature so no query can reach another course's material.
    • Provisioned AWS ECS Fargate, RDS, S3 with CloudFront, an Application Load Balancer and Secrets Manager in Terraform; built continuous integration and deployment in GitHub Actions with OpenID Connect login to AWS, Pytest, Ruff, Playwright end-to-end tests and automated database backup and restore.
    • Conceived and built Reverse Quiz: students answer open-ended questions and the AI checks their answers against the source material, turning passive recall into active retrieval practice.
    • Certificate awarding first place in the University Engagement Program 2026 Cohort Mentorship phase, in partnership with Amazon Women in Engineering

    AWS, Terraform, Docker, GitHub Actions, PostgreSQL, pgvector, ChromaDB, SQLAlchemy, Alembic, FastAPI, Python

  • WellWell

    Medication-safety app that scans medicine labels, flags interactions and duplicated active ingredients, and sends offline dose reminders.

    August 2026, team of two

    What I built

    CS Girlies 'Technology For Wellness' hackathon, 48 hours, online

    Built the Flutter app and the .NET 8 backend.

    • Reads brand, generic name, active ingredient, dose and expiry from a label photo and checks them against a drug database; adds reminders with streak tracking, caregiver sharing and an emergency QR card.
    • Flutter app (Riverpod, go_router) and a .NET 8 vertical-slice API with PostgreSQL, Redis and JSON Web Token authentication with refresh-token rotation and reuse detection. Every safety decision is deterministic; GPT-4o-mini only writes the explanations.
    • 168 automated tests (107 unit, 61 integration); the backend is deployed live through continuous integration.
    The WellWell safety screen, warning that Parol and Tylenol Extra Strength both contain 500 mg of Acetaminophen

    Flutter, Dart, .NET 8, PostgreSQL, Redis, GPT-4o-mini

  • TOYGAR

    Turkic-themed 3D action-defense game: defend a nomadic otağ (a ruler's tent) during a traditional wedding.

    June 2026

    What I built

    Turkic Game Jam 2026, 48 hours

    Game designer; gameplay and audio systems developer.

    • Culturally inspired gameplay loop with localized resources and custom defensive mechanics.
    • Dynamic day-night audio.

    Unreal Engine 5, Blueprints

Projects

  • Neural networks from scratch

    An autograd engine and character-level language models built from first principles, from a single neuron to a WaveNet-style model.

    Ongoing, solo project

    What I built

    YZ50 AI training program (selected participant)

    • Autograd engine with backpropagation for every operation, verified three ways (as a single tanh operation, as decomposed primitives, and numerically), plus a pure-Python renderer that draws computation graphs as scalable vector graphics (SVG).
    • Character-level language models trained on a Turkish names dataset: a bigram model, then a multilayer perceptron after Bengio et al. (2003), then a hierarchical WaveNet-style model.
    • Deriving backpropagation by hand through batch normalization and cross-entropy, without autograd.

    Python, PyTorch

  • Bilkent Campus Simulation

    Interactive 2D campus-management game in Java and JavaFX, built on a model-view-controller architecture.

    February – May 2025

    What I built

    Team project

    Designed the entity hierarchy, resource-management logic, real-time state updates and the user interface.

    Java, JavaFX

Other

  • The ceramics industry in Türkiye's industrialisation: Toprak Holding

    Group research paper on the Turkish economy after 1980, traced through one company: the rise of Toprak Holding and Toprak Seramik in Bozüyük, and the collapse that followed its move into banking.

    Team of five

    What I built

    HIST200, Fall 2025–2026, Bilkent University

    • Built from newspaper archives, audiovisual sources, and an interview with a company executive from the period.
    • Published in Bilkent University's institutional repository under CC BY-NC-ND 4.0. Written in Turkish.