I'm Kutalmış Berke Yılmaz, a product-focused full-stack engineer specializing in frontend development, AI-enhanced workflows, and scalable system design. I build distributed pipelines, low-latency UIs, and data-heavy applications, and I quickly adapt to unfamiliar codebases while owning features end-to-end from architecture to deployment. I’m passionate about turning complex requirements into reliable, user-friendly solutions and collaborating across frontend, backend, and data/AI teams to deliver impactful products.…

Kutalmış Berke Yılmaz

I'm Kutalmış Berke Yılmaz, a product-focused full-stack engineer specializing in frontend development, AI-enhanced workflows, and scalable system design. I build distributed pipelines, low-latency UIs, and data-heavy applications, and I quickly adapt to unfamiliar codebases while owning features end-to-end from architecture to deployment. I’m passionate about turning complex requirements into reliable, user-friendly solutions and collaborating across frontend, backend, and data/AI teams to deliver impactful products.…

Available to hire

I’m Kutalmış Berke Yılmaz, a product-focused full-stack engineer specializing in frontend development, AI-enhanced workflows, and scalable system design. I build distributed pipelines, low-latency UIs, and data-heavy applications, and I quickly adapt to unfamiliar codebases while owning features end-to-end from architecture to deployment.

I’m passionate about turning complex requirements into reliable, user-friendly solutions and collaborating across frontend, backend, and data/AI teams to deliver impactful products.

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Skills

Experience Level

Tailwind
Expert
React JS
Expert
CSS
Expert
JavaScript
Expert
Digital Performer
Expert
Node.js
Expert
HTML5
Expert
TypeScript
Expert
Python
Expert
Express
Expert
PostgreSQL
Expert
Web Design
Expert
Product Design
Expert
MongoDB
Expert
API
Expert
App Design
Expert
Bootstrap
Expert
Redis
Expert
Kubernetes
Expert
GraphQL
Expert
Docker
Expert
Django
Expert
AWS
Expert
jQuery
Intermediate
GitHub Copilot
Intermediate
React Native
Intermediate
MySQL
Intermediate
PHP
Intermediate
Animation
Intermediate
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Language

French
Advanced
English
Fluent
Turkish
Fluent

Work Experience

Founding Engineer (Contract - Upwork) at Clubworks
February 1, 2025 - Present
Architected a production-grade data ingestion platform using FastAPI, Celery, Redis Streams, and PostgreSQL, enabling parallel scraping, robust retry logic, and high-throughput task orchestration. Built a fully integrated pipeline across Next.js frontend, Express/Prisma backend, and Python worker services, running reliably in production with zero major failures over 3+ months. Optimized the ingestion workflow from 45 minutes to under 3 minutes for a full scrape across all locations — achieving a 15× throughput increase via concurrency tuning, batching strategies, and improved queue orchestration. Implemented structured scheduling (daily/weekly/monthly cycles) and dynamic queue feeding, ensuring continuous data freshness with no manual intervention. Created internal debugging/monitoring tooling for workers, queues, and ingestion states, significantly shortening troubleshooting time and increasing pipeline observability.
Senior Fullstack Product Developer at PXCH Holding
June 1, 2024 - November 1, 2025
Co-led major parts of the platform’s UI/UX overhaul, redesigning core flows (tests, settings, dashboards) and implementing reusable component patterns. Progressed from frontend-focused tasks to fullstack and architectural ownership, influencing system design, data flows, and product-level decisions. Built a transcript-based RAG chatbot MVP capable of retrieving and citing relevant transcript segments, establishing the base architecture for future conversational tooling. Ported the Chrome-only browser extension to Firefox and Safari, resolving cross-browser API differences and packaging issues, enabling multi-browser support for future user acquisition. Implemented drag-and-drop features, an enhanced image coordinator, and proper skeleton loading states. Designed an onboarding flow and an interactive frontend demo to help new users understand experiment workflows without friction. Delivered modular components and UI architecture patterns reused across PXCH products (including SendShor
Product Developer at Medusa Global Digital Agency
December 1, 2023 - April 1, 2024
Developed frontend and backend features across client industries (healthcare, construction, tourism). Deployed and configured Ubuntu LightSpeed & VPS servers, improving performance and reliability. Worked closely with UI/UX and backend teams to deliver custom web services and integrate third-party APIs. Defined system architectures and tech stacks for new projects; improved accessibility and cross-device compatibility in existing projects.
Frontend Developer at Fiores Global
February 1, 2023 - August 1, 2023
Rebuilt the company website with a cleaner architecture and improved accessibility. Collaborated with backend engineers to design and implement a new project dashboard. Supported hiring and onboarding of new developers to align with updated tech stack and workflows.
Database Administrator at MOBILPARK
September 1, 2022 - January 1, 2023
Gained hands-on exposure to MVC fundamentals, SQL-based systems, and core web technologies during integration troubleshooting.

Education

Introduction to Computer Sciences at Izmir University of Economics
August 1, 2023 - December 29, 2023
Introductory information about Pyhton, Java, Javascript and PHP. Information about computer engineering, web development, waterfall project management.
Bachelor of Arts at Istanbul Marmara University
June 30, 2016
Interpretation and Translation
Highschool Graduation at Lycée Saint Joseph d'Izmir
June 30, 2011
Exchange Student at Université de Rouen
September 14, 2014 - June 14, 2015
Lingustics
Bachelor’s Degree in French Translation and Interpreting at Marmara University, Istanbul
January 1, 2016 - January 1, 2016

Qualifications

Introduction to Computer Science Certificate
January 1, 2022 - December 31, 2022
Duolingo English Test (Equivalent to IELTS)
January 1, 2023 - January 1, 2023
DELF (Diplôme d’Études en Langue Française) — B2
January 1, 2017 - January 1, 2017
IELTS Academic
January 1, 2016 - January 1, 2016

Industry Experience

Computers & Electronics, Software & Internet, Telecommunications, Media & Entertainment, Professional Services
    paper https://healthandwonders.com/

    This is a semi-CMS application with a dashboard with prepared components. Project has been made by me.
    Features:

    • 4 language API structure.
    • High SEO score.
    • Mongoose - MongoDB.
    • ExpressJS.
    • Bootstrap.
    • Pug templating engine.
    paper https://aymasmakina.com/tr

    This UX design doesn’t belong to me, it was an old project and responsiveness was really bad. Redesigned most of the components per different viewports to achieve responsiveness.

    paper https://latanwood.com.tr/

    This is a Shopify app which I’ve made frontend edits for different viewports. Product detail section has been restructured with page level CSS rules, also made component level changes for new items.

    paper https://www.teamrandom.dev/

    This is a semi-portfolio application which has a dashboard implementation with CRUD functionalities. We made this app to develop a working cohesion with my teammate, also to kick start future service integrations. Most important factor in this project is IMAPFlow, Gmail inbox integration as a Saas feature.

    I’ve founded this team and worked as a Lead Developer in this project. My responsibilites were:

    • UI/UX design
    • IMAPFlow integration
    • Animated components integration
    • Dashboard implementation
    • API and request structure
    • Edgestore service integration
    • MongoDB integration
    • NextAuth integration
    paper https://www.fioresglobal.com/

    This is my first commercial web app. I worked as a frontend developer in this project, which was first built with a Django framework, later switched to Express.js. UI/UX has been developed with the project managers and client requirements.