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About Me

Get to know the person behind the code

Hello, I'm Berkay

I'm a Software Engineer and Frontend Developer at Twin Science with 3+ years of experience building educational and purpose-driven digital products. I specialize in Angular and React/Next.js, and I focus on turning complex ideas into clear, high-impact user experiences.

At Twin Science, I have led frontend architecture decisions, migrated a legacy Angular 8 codebase to a modern React structure, and improved real-world performance significantly. I also work on AI-powered content tooling and prompt-driven workflows with Node.js to support faster and more reliable product delivery.

Before web product engineering, I worked as a game developer and shipped multiple mobile games as a solo developer. Outside of work, I contribute to social impact through YGA by leading science and AI workshops for children in earthquake-affected regions, and I stay hands-on with modern frontend, backend, and AI tooling.

Location
İstanbul, Türkiye
Experience
3+ Years
Focus
Frontend & AI Product Engineering
Berkay Arda Yıldız

Experience

My professional journey in tech

Frontend Developer

Current
Twin Science09/2023 – Current

AI-powered content workflows and Node.js prompt pipelines • Angular 8 to React migration with reusable, scalable architecture • Frontend performance improvements across products (65%+ PageSpeed gain on app.twinscience.com) • Interactive features for code.twinscience and SEO/responsiveness improvements on WordPress • Sentry-based production monitoring, API collaboration, and code reviews

AngularTypeScriptRxJSNgRxNode.jsSentry

Frontend Intern

Twin Science07/2023 – 09/2023

Supported frontend feature delivery in edtech products • Contributed to component development with senior guidance • Built strong production-level frontend foundations

AngularTypeScript

Software Engineer Intern

Beylikdüzü Municipality05/2023

Short-term software engineering internship in public sector • Supported implementation-focused engineering tasks

JavaScriptWeb Development

Junior Game Developer

Servo Studios06/2022 – 02/2023

Owned end-to-end development of 5 mobile games in Unity and C# • Delivered titles in fast 30-day production cycles

UnityC#MixamoPhotoshop

IMAGINER Student Ambassador

Microsoft11/2022 – 06/2023

Represented Microsoft IMAGINER initiatives in university/community settings • Promoted technology learning and ecosystem engagement

JavaScriptReactAzureC#

Values & Principles

Principles I actively defend in every product I build

User-Centered Design

I do not design for screens; I design for people. Every interaction should feel clear, purposeful, and easy to trust.

Performance First

Speed is not a bonus feature. It is part of product quality, and I treat performance as a core requirement from day one.

Continuous Learning

I constantly test new tools and patterns, then keep only what creates measurable value in real-world delivery.

Collaborative Spirit

Strong products are built through clear communication, sharp feedback loops, and shared ownership across the team.

Tools & Technologies

The technologies and tools I work with daily

Technologies

Frontend

HTML
CSS
JavaScript
Angular
React
React Native

Backend

Java
Python
C#
C/C++
SQL

Tools

Unity
Node.js
Git
Photoshop

Araçlar

Development

VS Code
Cursor
Git
Chrome DevTools
Postman
Docker
Prompt Engineering
AI Engineering

Design

Figma
Adobe XD
Photoshop
OpenAI
Claude

Productivity

Notion
Slack
Jira
Linear

Deployment

Vercel
AWS
Docker
GitHub Actions
GitHub