Olgun Özoktaş

Olgun Özoktaş

Full-Stack Software Engineer

Istanbul, Turkey

About Me

Full-Stack Software Engineer with 6+ years of experience designing and leading development of scalable web applications using PHP, Laravel, JavaScript, ReactJS, TailwindCSS, MySQL, PostgreSQL and Oracle. Holds an MSc in Information Systems Engineering and is pursuing a PhD focused on blockchain systems. Skilled in DevOps operations, RESTful APIs, Payment Gateway Integrations, CRM/CMS platform developments, and mentoring junior developers, with a proven track record of optimizing performance and delivering user-focused solutions.

Work Experience

Senior Software Engineer

Turkcell Northern Cyprus

Lifecell Digital - CRM Team

Oct 2021 - Present

Remote
  • Led a team of 4 developers as Team Leader and Scrum Master since Dec 2024, implementing agile methodologies with Jira.
  • Developed and maintained applications using PHP, Laravel, ReactJS, PostgreSQL, Active Directory, GitLab, and TFS, deploying on Redhat OS for corporate stability.
  • Integrated with Oracle Procedures, ensuring seamless connectivity to enterprise backbone systems.
  • Built Python and NodeJS scripts for CPE management and base station monitoring, enhancing operational efficiency.
  • Tracked system logs with Graylog, visualized CPE devices usage and base station monitoring via Grafana, enabling proactive optimization and capacity planning.
  • Integrated payment gateways, increasing system payments by 45% and streamlining revenue collection with seamless transactions.
  • Applied SOLID principles, delivering clean, scalable code for CRM systems serving 30,000+ customers and more than 1000 active system users.

Senior Software Engineer

Cyprus International University

Software Team

2019 - 2021

Mia Milia, Cyprus
  • Built and enhanced university systems (Dormitory Management, HR Portal, Decision Support System, public CMS) using PHP, Laravel, AngularJS, ReactJS, MySQL, and LDAP.
  • Optimized Student Management System sub-modules, supporting 20,000+ students and faculties with improved UX and 15% faster load times.
  • Collaborated cross-functionally to integrate scalable solutions, boosting operational efficiency for campus-wide platforms.

Software Developer

Cyprus International University

Software Team

2018 - 2019

Mia Milia, Cyprus
  • Developed web apps with PHP, Laravel, ReactJS, MySQL, and LDAP, including sub-modules for the Student Management Portal.
  • Contributed to the university's mobile app using Java and Android SDK, increasing student engagement by integrating bus schedules of university.
  • Assisted other developers in building sub-modules for the student management portal, fostering team collaboration and knowledge sharing.

Freelance Web Developer

Upwork | Independent

2016 - Present

Remote
  • Delivered 20+ projects over 9 years, including AI chatbot back-ends, mobile app APIs, and CRM systems using PHP Laravel, ReactJS, AngularJS, InertiaJS, NodeJS, ExpressJS, TailwindCSS and payment integrations (Stripe, PayPal).
  • Managed full project life cycles for clients, achieving 100% satisfaction and completing 90% of deliverables ahead of schedule.

Education

Ph.D in Computer Engineering

Cyprus International University

2021 - 2025

Ongoing

M.Sc in Information Systems Engineering

Cyprus International University

2018 - 2021

Thesis: SQL Injection Detection Using Machine Learning – Built ML models with 90% accuracy

B.Sc in Information Systems Engineering

Cyprus International University

2013 - 2018

Technologies & Skills

Back-End

PHP
Laravel
Python
FastAPI
NodeJS
ExpressJS

Front-End

ReactJS
TailwindCSS
Bootstrap
InertiaJS
Vue
AlpineJS

DevOps

Apache
Docker
Graylog
Grafana
LDAP
Linux
Minio
Nginx

Databases

MySQL
PostgreSQL
SQLite
Oracle

Other

Jira
Trello
Active Directory
REST API
GraphQL

Projects

Docujar - PDF Engagement Platform

Software Architect

Nov 2023 - Present

A platform for companies to send PDF documents and track metrics like total page visit times, heatmaps, and top-viewed pages.

Technologies Used:

PHPLaravelReactJSInertiaJSTailwindCSSMySQLPythonFastAPI

Key Highlights:

  • Built an MVP platform for companies to send PDF documents (catalogs, offers) and track metrics like total page visit times, heatmaps, and top-viewed pages.
  • Designed a heatmap algorithm to provide PDF interactions of users for enhancing client insights.
  • Integrated an AI chatbot for PDFs via a custom developed document training and chat system.
  • Deployed on Hostinger with Ubuntu server and Cloudflare R2 for PDF storage, configuring web services for scalability and performance.

Certifications

Docker & Container Technologies Fundamentals

October 2024

Interests

  • Passionate about blockchain systems, AI developments and entrepreneurship.
  • Enjoy swimming and watching sci-fi movies.

Get In Touch

Feel free to reach out for collaborations or just a friendly chat.