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melihaycicek/README.md

Header

Portfolio LinkedIn Audfix Email


"İmagine a plumber. He has to join the pipes in the right places for the flow.
I am the plumber who creates and joins the pipes."

Always in update. The pendulum in my brain never stops.


Building independent products while helping systems become faster, stronger, and more scalable.

Backend & Performance Architecture  ·  Data Pipelines  ·  Distributed & Hybrid Systems  ·  Cloud & On-Prem Delivery  ·  AI Integration


What I Deliver

I take full ownership of the problem — architecture, implementation, and delivery. No handoffs mid-project.

  • Design and build distributed data pipelines (Kafka, Spark, Flink, Hadoop) that process millions of events under resource constraints
  • Orchestrate distributed system communication — Saga patterns, event-driven choreography, reliable cross-service transaction management — not just data flow, but coordinating state across services
  • Integrate AI capabilities into existing systems — RAG pipelines, local LLMs, agent workflows — without overengineering
  • Model and automate business processes with BPMN workflow engines and n8n; manage full sprint and backlog lifecycles (Jira-style) from definition to delivery
  • Ship real products to real users: audfix.com is in production, audroad is a working FinTech AI pipeline

Vision

Most engineering work stops at prototype. I'm interested in closing the gap between a working proof of concept and a system that handles production load, real users, and real operational pressure.

Long term: building software products that run independently — not tied to a single client or company.


Tech Stack

Backend & Frameworks

Skills

Frontend

Skills

Data Engineering & Streaming 🔄

Skills   Apache Spark Apache Flink Hadoop

Data Analytics & Science 📊

Skills   NumPy scikit-learn

Databases

Skills

DevOps & Infrastructure

Skills

AI & Automation

Skills   LangChain HuggingFace n8n Ollama OpenAI

IoT & Embedded

Skills   STM32 MQTT SAP MES

Process & API Tooling 🗂️

Skills   BPMN / Camunda Jira Swagger


Projects

Project Description
Audfix Production SaaS — developer tools platform. Retrospective management, image hosting API, QR generator, real-time WebSocket collaboration, i18n (EN/DE/TR), admin panel.
Audroad FinTech AI audio pipeline — Kafka 4.2 KRaft + MinIO + faster-whisper. Batch and live transcription over WebSocket, Docker-composed microservices.
FPGA-RL-Trading-Midas FPGA-accelerated reinforcement learning trading system
OctoSky Cloud-native Spring Boot application

Stats


Contribution Pipeline

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  1. mqtttestUsageComponent mqtttestUsageComponent Public

    Java

  2. TensorFlow_Colab_Train.ipynb TensorFlow_Colab_Train.ipynb Public

    Jupyter Notebook

  3. AuthInOtp AuthInOtp Public

    Setting the login page for OTP steps and laying the foundations for remote control

    Java

  4. SparkProject SparkProject Public

    Java

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    Develop your green thumb with our Metaverse Farming app! Grow your own fresh and organic produce with ease, from the comfort of your own home. Our app allows you to choose from a wide variety of fr…

  6. Optio-Middleware Optio-Middleware Public

    A local AI middleware that enforces strict JSON structure on natural language commands. QLoRA fine-tuned on consumer hardware (RTX 4060) to bridge the gap between chaotic user inputs and backend lo…