Ozgur Dogan, Developer in London, United Kingdom
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Ozgur Dogan

Verified Expert  in Engineering

Front-end Development Developer

London, United Kingdom
Toptal Member Since
September 24, 2020

Ozgur has been working in the IT industry for more than 10 years as a front-end developer, full-stack developer, co-founder, and CTO. He holds degrees in computer and industrial engineering from Koc University. Ozgur has developed several projects using JavaScript, React/Redux, TypeScript, PWA, Node.js, Express, and Java. He's also experienced with AWS, Firebase, CI/CD, Agile development, and storage systems.


React, Next.js, Firebase, Node.js, TypeScript, JavaScript, Vercel, Management...
Chat and Chatbot Company
Amazon Web Services (AWS), Jira, Bitbucket, Redis, MySQL, TypeScript...
MySQL, JavaScript, PHP, NAS Servers, Storage, Cisco MDS, SAN Brocade, EMC VMAX...




Preferred Environment

Redux, React, Amazon Web Services (AWS), TypeScript, Next.js, Vercel, JavaScript, Firebase, Node.js

The most amazing...

...thing I have done is to found the biggest chat/chatbot startup in Turkey. I developed the core products and hired/managed 12 engineers.

Work Experience


2020 - PRESENT
  • Managed the front-end React development with TypeScript and Redux for a US-based ML startup. Handled dashboard, charts, maps, and reporting interfaces development.
  • Handled full-stack Google Firebase development for a UK-based startup in the maintenance sector. Worked on the back end with Firebase Functions and the Firestore database, React, and TypeScript for the front end.
  • Worked on the full-stack Next.js development for a UK-based startup in the tourism and hospitality sector. Developed the back end and front end with Next.js hosted on Vercel. Used React and TypeScript and did the payment integration with Stripe.
  • Conducted recruitment, onboarding, and management of six front-end developers.
Technologies: React, Next.js, Firebase, Node.js, TypeScript, JavaScript, Vercel, Management, Hiring, CTO, Leadership, IT Project Management, Budgeting, Stripe, Amazon Web Services (AWS), Google Cloud, Agile Project Management, Team Leadership, Architecture, Remote Team Leadership, GitFlow, GitHub, Web Development, Technical Leadership, Software Architecture

Co-founder | CTO

2016 - 2020
Chat and Chatbot Company
  • Founded the biggest chat/chatbot startup in Turkey. It has been used by four of the top five private banks in Turkey, the largest eCommerce company in Turkey, the second-largest insurance company in Turkey, and several other companies.
  • Developed the first product of the company completely by myself. I used Java, Hibernate, React, and Redux to create it.
  • Managed and planned the cloud infrastructure of the company using AWS. The system I set up has been used by 40 companies and processing more than 30 million messages every year.
  • Hired, mentored, and led four teams with over 20 developers and SREs.
  • Gathered requirements from customers, product managers, and project managers, and translated these requirements into technical tasks.
Technologies: Amazon Web Services (AWS), Jira, Bitbucket, Redis, MySQL, TypeScript, JavaScript, Redux, React, Node.js, Java, CTO, Hiring, Management, IT Project Management, WhatsApp API, Facebook API, Bitbucket API, Chatbots, Team Leadership, Remote Team Leadership, Agile Project Management, APIs, Architecture, GitFlow, MongoDB, MongoDB Atlas, HubSpot, Zapier, WhatsApp, Facebook Messenger API, Facebook SDK, Twitter API, Live Chat, Bots, Web Development, Technical Architecture, Technical Leadership, Software Architecture

Senior Storage Specialist

2011 - 2016
  • Managed and planned over a petabyte storage capacity. Managed HDS, HPE 3PAR, and EMC storage systems.
  • Planned and managed over 1,000 ports of storage area networking (SAN). Managed SAN switches of both Brocade and Cisco.
  • Planned and executed intra and inter-data-center storage migration projects.
  • Developed custom storage monitoring and reporting software that collects data from various storage devices and presents it in a dashboard using PHP, JavaScript, and MySQL.
Technologies: MySQL, JavaScript, PHP, NAS Servers, Storage, Cisco MDS, SAN Brocade, EMC VMAX, HDS, SANs, Planning, Budgeting

Storage Specialist

2011 - 2012
  • Collaborated with sales teams all over the region (between the UK, South Africa, and India) as a technical consultant.
  • Trained local business partners in Turkey in order to improve their technical capabilities.
  • Designed the storage and backup architecture using the IBM portfolio according to our customer's needs.
Technologies: IBM Storage


Biostays is an eco-friendly tourism startup. Biostays provide eco-friendly accommodation options for travelers. I designed and developed their reservation system using the following technologies: React, Next.js, TypeScript, JavaScript, Stripe, and Firebase Firestore.

DoganTech Website

DoganTech is a London-based software development and project management company that works with small businesses and startups.

I developed the DoganTech website based on WordPress using Elementor. WordPress application is hosted in Amazon EC2. In addition to Nginx and PHP-FPM configuration and optimization, I also configured the backup system for the website using a crontab script and AWS S3.

Social Check

Social Check is an online tool where you can optimize your social accounts like YouTube, Instagram, Twitter, and Facebook. Social accounts are the new web and should be optimized for better search results. Social Check analyzes your social accounts and YouTube videos and provides suggestions for what you should do to increase your views.

Tech Tools List

Tech Tools List is a listing website where people can learn about who is using it, how this tool works, what features it has, and pricing about tech tools. It uses Next.js hosted on Vercel and Firebase as a database.

On The House

On The House is a property maintenance management company. I developed the software that the company uses as a CRM and for business process automation.

I developed the software using React, TypeScript, and Next.js. For the back end I used Google Firebase, including Firebase Firestore, Authentication, Storage, and Functions.


SQL, JavaScript, HTML5, CSS, HTML, Java, TypeScript, Java 8, PHP


React, Node.js, React Redux, Stripe, WhatsApp API, Facebook API, Bitbucket API, YouTube API, Facebook Messenger API, Facebook SDK, Twitter API


Bitbucket, Slack, Jira, Cron, GitHub, MongoDB Atlas, Zapier


Amazon Web Services (AWS), Visual Studio Code (VS Code), Firebase, WordPress, Amazon EC2

Industry Expertise

Project Management


MySQL, Redis, EMC VMAX, NAS Servers, Google Cloud, Cloud Firestore, Amazon S3 (AWS S3), MongoDB


IT Project Management, Data Structures, SANs, HDS, SAN Brocade, Cisco MDS, Storage, IBM Storage, Front-end Development, Operating Systems, PWA, Progressive Web Applications (PWA), Optimization, Operations Research, Cost Analysis, Serverless, Gatsby, Vercel, Hiring, CTO, Leadership, Budgeting, Chatbots, Planning, Backups, Elementor, Team Leadership, Remote Team Leadership, APIs, Architecture, GitFlow, HubSpot, WhatsApp, Live Chat, Bots, Web Development, Technical Leadership, Software Architecture, Technical Architecture


Redux, Hibernate, Spring, MUI (Material UI), Next.js, Tailwind CSS


Management, Agile Project Management

2006 - 2011

Bachelor of Science Degree in Industrial Engineering

Koc University - Istanbul, Turkey

2006 - 2011

Bachelor of Science Degree in Computer Engineering

Koc University - Istanbul, Turkey


Mobile Web Specialist