Yağız Berke Güvenç
Available for new projects

Hey, I’m Yağız. Senior Full Stack Engineer with experience in end-to-end architecture, multi-tenant SaaS systems, real-time data streaming, and modern DevOps workflows.

Featured Work

Yönetim Çözümleri

Yönetim Çözümleri

SAAS PLATFORM
DASHBOARD

Multi-tenant workforce and facility management SaaS featuring real-time guard patrol tracking, QR checkpoint verification, shift scheduling, and task management.

Pawiday

Pawiday

FULL STACK
BOOKING SYSTEM
ADMIN CMS

Full-stack pet care & appointment booking platform with real-time slot availability, dynamic multi-step wizard, bilingual (TR/EN) support, and a comprehensive CMS admin dashboard.

OpenGraph Studio

OpenGraph Studio

DEVELOPER TOOL
OPEN SOURCE

Multi-framework dynamic OpenGraph image and SEO metadata generator with real-time multi-platform social card previews.

Vehicle Valuation App

Vehicle Valuation App

REACT
MATERIAL-UI
FRONTEND

Vehicle valuation platform with advanced form validation, robust approval flows, and API integrations. Features a responsive Material-UI interface optimized for high-traffic user onboarding.

Renew

Renew

TYPESCRIPT
REACT
MATERIAL-UI

Modernized vehicle listing and comparison platform with complex filtering and sorting algorithms. Built with TypeScript and Material-UI to deliver a responsive, stable UI for Authorized Dealer Assurance.

Online Service Appointment

Online Service Appointment

REACT
FRONTEND
API INTEGRATION

Appointment booking architecture with optimized API calls and simplified form flows. Features Google Maps integration for dealer selection, speech-to-text notes, and secure SMS verification.

Dealer Website

Dealer Website

NEXT.JS
REACT
MATERIAL-UI

White-label dealer website platform built with Next.js and React for enhanced SEO visibility. Features a reusable Material-UI component library and full WCAG accessibility compliance.

IKAM

IKAM

REACT
SOCKET.IO
DASHBOARD

Real-time notification and workflow digitalization system featuring Socket.IO instant alerts, multi-step wizards, and dynamic data tables with optimized data visualization dashboards.

Total Campaign

Total Campaign

REACT
MATERIAL-UI
FRONTEND

Campaign management system featuring advanced form validation, robust approval flows, and API integrations. Built with Material-UI to ensure a responsive and accessible user onboarding experience during high-traffic periods.

Projects

Yönetim Çözümleri

Yönetim Çözümleri

MOBILE APP

Mobile companion app for security personnel and site staff enabling QR code checkpoint scanning, GPS-verified patrol tracking, and real-time task workflows.

React NativeExpoMobile Architecture
Enhancer for Gemini

Enhancer for Gemini

BROWSER EXTENSION

Open-source browser extension that enhances Google Gemini with custom prompt libraries, favorite responses, chat folders, and note-taking.

DesignFrontendOpen Source

Skills & Tools

Core Technologies

  • TypeScript
  • JavaScript (ES6+)
  • HTML5
  • CSS3 / SCSS
  • PHP
  • SQL
typescripttypescript
javascriptjavascript
html5html5
csscss

Frontend & Mobile

  • React & Next.js
  • React Native & Expo
  • Tailwind CSS
  • Redux Toolkit & Zustand
  • TanStack Query
  • Material-UI
reactreact
nextdotjsnextdotjs
expoexpo
tailwindcsstailwindcss

Backend & Databases

  • Node.js & Express.js
  • PostgreSQL
  • Prisma ORM
  • RESTful API & Socket.io
  • Zod & JWT
nodedotjsnodedotjs
postgresqlpostgresql
prismaprisma
socketdotiosocketdotio

DevOps & Cloud

  • Docker Compose
  • Dokploy (PaaS)
  • Cloudflare (Zero Trust, R2)
  • Git & CI/CD
  • Microservices
dockerdocker
cloudflarecloudflare
gitgit
linuxlinux

Experience

Feb 2026 - Present
Freelance

Senior Full Stack Engineer

Apr 2025 - Oct 2025
Renault Türkiye

Senior Frontend Engineer

Jan 2023 - Mar 2025
Renault Türkiye

Middle Frontend Developer

Mar 2021 - Dec 2022
Biçözüm

Junior Full Stack Developer

Aug 2020 - Feb 2021
Anatolia System

Junior Full Stack Developer

About

About

Senior Full Stack Engineer with 6+ years of experience in the React, Next.js, React Native, and Node.js ecosystems. Experienced in end-to-end architecture, multi-tenant SaaS systems, real-time data streaming, and modern DevOps workflows. Builds scalable, type-safe, and performance-driven web and mobile products.