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Experience & Education — Eren Çolak

Experience & Education

A timeline of engineering impact, growth and learning.

Professional Experience

Hepsiburada logo

Front-End Developer Intern

Company:Hepsiburada

10.2025 - PresentIstanbul, Turkey

Working on an internal content management system used by operations and marketing teams to manage banners, links, and dynamic storefront content.

  • Developing the second version (v2) of the platform and rebuilding the admin interface with a modern, scalable React architecture
  • Built reusable components and management panels enabling real-time content updates across high-traffic pages
  • Collaborated with backend and product teams to integrate APIs and ensure reliable content delivery at scale
  • Improved developer experience by introducing reusable patterns and component libraries
ReactTypeScriptNext.jsTailwind CSS
Trakya Rezonans logo

Full Stack Developer (Freelance)

Company:Trakya Rezonans

11.2025 - PresentIstanbul, Turkey

Freelance development of a web management panel for dietitians and clients, focusing on scheduling, payments reconciliation, and operational workflows.

  • Built a centralized management panel for scheduling, client management, and payments reconciliation
  • Integrated Google Calendar for appointment sync and automated reminders
  • Implemented role-based access, responsive UI, and performance optimizations
  • Replaced manual Excel workflows with streamlined admin tooling and operational dashboards
ReactNode.jsSupabaseTailwind CSSGoogle Calendar API
DeepSport Athletic logo

Part-time Front-End Developer

Company:DeepSport Athletic

10.2025 - PresentIstanbul, Turkey

Implemented SSR and SSG in Next.js to improve SEO and redesigned responsive layouts using TailwindCSS.

  • Implemented SSR and SSG patterns to improve search visibility and crawlability
  • Redesigned responsive layouts for improved mobile and tablet experiences
  • Contributed to the UI migration and collaborated on design + implementation decisions
Next.jsTailwind CSSSEOResponsive Design
DeepSport Athletic logo

Full Stack Developer

Company:DeepSport Athletic

06.2025 - 10.2025Istanbul, Turkey

Redesigned DeepSport landing and developed HitnessLab — a SaaS platform for instructors — using Spring Boot microservices and Next.js.

  • Redesigned and rebuilt the landing page focusing on SEO and performance
  • Built HitnessLab with Spring Boot microservices and Next.js frontend
  • Designed performance tracking dashboards for coaches and athletes
  • Integrated media upload and streaming workflows for instructors
Spring BootNext.jsTailwind CSSPostgreSQLMicroservices
BRF - Banvit logo

IT Intern

Company:BRF - Banvit

07.2024 - 08.2024Istanbul, Turkey

Worked on deploying applications in Docker and Kubernetes environments, including AWS deployment tasks. Created reports and data visualizations using Power BI.

  • Deployed containerized applications and assisted with Kubernetes setups
  • Generated reports and visualizations in Power BI for operational stakeholders
  • Supported daily system maintenance and user support tasks
DockerKubernetesAWSPower BI

Education

Bachelor of Computer Science and Engineering

Marmara University

Sep. 2021 - Present (4th Year)Istanbul, Turkey

Focused on software engineering, algorithms, data structures, and modern programming paradigms. Built strong foundation in computer science fundamentals with emphasis on practical application.

Highlights
  • Currently in 4th year of Computer Science and Engineering program
  • Strong foundation in algorithms, data structures, and software design
  • Extensive coursework in web development, databases, and system design
  • Active participation in software development projects and internships

Certifications

Docker & Kubernetes: The Practical Guide

Udemy

Aug 2024
DockerKubernetesAWS

The Complete 2024 Web Development Bootcamp

Udemy

Apr 2024
HTML5CSSBootstrapJavaScriptjQueryNode.jsExpress.jsPostgreSQLReact.js

PostgreSQL Veritabanı Programlama

Udemy

Mar 2024
PostgreSQLSQL

Introduction to Machine Learning

Global AI Hub

Oct 2023
Machine LearningArtificial Intelligence

Bootstrap 5

BTK Akademi

Sep 2023
CSSBootstrap

Staj Programı - Python

Patika.dev

Dec 2022
GitPython

Versiyon Kontrolleri: Git ve GitHub Katılım Sertifikası

BTK Akademi

Sep 2022
Git