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Özge DemiryolÖD

Özge Demiryol

Full-Stack Developer

€300/day
Istanbul, TR
3-7 years

Average response time: 1 hour

About Özge

  • Turkish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Independent Contractor
    Full-Stack Developer
    DIGITAL AND IT
    April 2025 - Today (1 year and 4 months)
    İstanbul, Türkiye
    • ● Delivered an end-to-end broadcasting platform for 20,000+ subscribers with Node.js/ TypeScript shipped on time across an international, 3-hour timezone gap, verified 5-star client review on Upwork.
    • ● Accelerated the delivery of complex software solutions by strategically integrating AI-assisted development tools, including Claude Code and Codex, into the SDLC.
    • ● Architected an end-to-end multi-agent workflow using React, Python, LangGraph, and PostgreSQL to track real-time temperature/time breaches in cold chain logistics and automate compliance processes.
    • ● Developed an end-to-end platform using Next.js, Supabase, and AI agent orchestration to identify purchasing friction points from product catalogs and customer feedback, optimizing inventory management.
    Node.js Python React.js Langchain RAG
  • Üçler Yazılım
    Full-Stack Developer
    LOGISTICS AND SUPPLY CHAIN
    October 2024 - April 2025 (6 months)
    Istanbul, İstanbul, Türkiye
    • ● Developed enterprise-scale features for international logistics partners (Aras Kargo, City Express) using .NET 6, Redis and MongoDB, ensuring compliance with asynchronous microservice standards and performance benchmarks.
    • ● Refactored front-end business logic into reusable and maintainable components using TypeScript.
    • ● Resolved software issues based on customer feedback in large-scale, full-stack web applications, adhering to software development principles such as SOLID and DRY.
    • ● Conducted tests, identified errors, and resolved issues to ensure high-quality deliverables.
    .NET MongoDB C# Typescript Apache Kafka
  • Algoritma Donanım ve Yazılım (BinBin)
    Software Developer
    INTERNET OF THINGS (IOT)
    August 2023 - October 2024 (1 year and 2 months)
    Istanbul, Türkiye
    • ● Modernized and redesigned the core communication infrastructure for the scooter fleet management system, implementing a scalable and testable back-end using .NET 8, gRPC, Redis Stream, PostgreSQL TimescaleDB, containerized via Docker to improve data handling and real-time device communication over MQTT and TCP/IP.
    • ● Managed and monitored application performance and infrastructure health utilizing AWS CloudWatch and AWS EC2 instances to ensure high availability.
    • ● Developed and maintained unit tests and integration tests using xUnit to ensure code quality and validate functionality
    • ● Integrated GoSharing IoT devices into the IoT communication system of BinBin, resulting in cost savings of €100,000 per month
    • ● Documented software design and implementation details for future development and team reference, including technical procedures and deployment configurations
    • ● Participated in code reviews to ensure code quality and adherence to coding standards.
    • ● Reduced fraudulent activity and saved BinBin approximately 800,000 TRY by resolving critical bugs in their customer mobile application, serving millions of users in Türkiye.
    • ● Developed greenfield application with Domain-Driven Design (DDD) and clean architecture via code first approach
    .NET SQL Internet of things Redis C#

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Education

  • Bachelor of Architecture
    Yıldız Technical University
    2021
    Bachelor of Architecture

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