Cihan İçelliler
Open to opportunities
Istanbul, Turkey
Senior Software Engineer & AI Agent Specialist

Cihan İçelliler

cihan = world

Building the — where AI agents orchestrate every process, from compliance to customer experience, autonomously.

JavaLangGraphSpring BootKafkaKubernetesgRPCRAGDDD

0+

Years Exp.

0

Banks Served

0+

Technologies

Currently building
Lecta AI — AI-native banking ops platform powered by LangGraph agent orchestration, RAG pipelines & event-driven microservices
See details

// projects & expertise

What I Build

Production-grade systems powering real businesses — from AI-native banking platforms to event-driven microservices at scale.

Lecta AI

AI-Powered Document Intelligence
In Development

Micro-SaaS platform leveraging LLM-powered agents for autonomous document processing. Built with LangGraph orchestration, RAG pipelines, and real-time streaming. Enables intelligent document understanding at scale with multi-agent workflows.

Ingest
Agent
RAG
Stream
API

🏗️Architecture

Multi-Agent

Core

RAG + Stream

🔧Stack

FastAPI + Supabase

LangGraphRAGFastAPIReactSupabaseLLM AgentsPythonWebSocket

Autonomous document intelligence • Production-ready

Enterprise

Distributed Systems

Microservices architecture, DDD patterns, high-throughput data pipelines, and scalable backend design for millions of users.

JavaSpring BootKafkagRPC
Real-time

Event-Driven Architecture

CQRS, event sourcing, real-time streaming pipelines, and asynchronous communication between distributed services.

KafkaRedisRabbitMQCQRS
Infrastructure

Cloud & DevOps

Cloud-native deployments, CI/CD pipelines, container orchestration, and infrastructure automation for reliable production systems.

DockerK8sAWSGitHub Actions
Data

Data Engineering

ETL pipelines, data modeling, vector databases, and analytics infrastructure powering intelligent business decisions.

PostgreSQLSupabasePineconedbt

AI Workflows & Agent Orchestration

Multi-agent orchestration with LangGraph, RAG pipelines for document intelligence, tool-use capabilities, and autonomous reasoning chains. Building AI systems that operate independently with human-level decision making.

LangGraphPythonRAGLLM AgentsPrompt EngineeringFastAPICrewAIVector DB
Let's discuss

// latest thoughts & writing

From the Blog

// professional journey

Impact-Driven Career

2024 — Present

AI Agent Engineer

Yapı Kredi Technology

Yapı Kredi Technology logo

Leading AI Agent orchestration using LangGraph for autonomous banking workflows. Architecting DDD-based microservices for next-gen digital banking infrastructure.

0LangGraph + DDD Architecture
LangGraphDDDSpring BootKafkaAI Agents
2023 — 2024

Senior Backend Engineer

Getir

Getir logo

Engineered high-scale distributed systems serving millions of users. Optimized event-driven pipelines that boosted user engagement by 30% through real-time personalization.

0User Engagement Increase
JavaSpring BootKafkaRedisMongoDB
2022 — 2023

AI & Software Engineer

Pdmechanics

Pdmechanics logo

Built real-time AI-powered fault detection systems for industrial equipment. Integrated ML pipelines that delivered 25% efficiency improvement in predictive maintenance workflows.

0Efficiency Improvement
PythonFastAPIPyTorchReal-time AIML Pipelines
2021 — 2022

Software Engineer

Siemens

Siemens logo

Developed innovative solutions for factory operations automation. Created monitoring and optimization tools that increased production productivity by 15% across manufacturing lines.

0Productivity Increase
JavaSpringReactDockerIoT

Companies & Programs

Yapi Kredi Technology
Getir
Pdmechanics
Siemens
Turk Telekom
Microsoft
Yapi Kredi Technology
Getir
Pdmechanics
Siemens
Turk Telekom
Microsoft
Yapi Kredi Technology
Getir
Pdmechanics
Siemens
Turk Telekom
Microsoft
Microsoft reverse
Turk Telekom reverse
Siemens reverse
Pdmechanics reverse
Getir reverse
Yapi Kredi Technology reverse
Microsoft reverse
Turk Telekom reverse
Siemens reverse
Pdmechanics reverse
Getir reverse
Yapi Kredi Technology reverse
Microsoft reverse
Turk Telekom reverse
Siemens reverse
Pdmechanics reverse
Getir reverse
Yapi Kredi Technology reverse

// tech stack

Tools & Technologies

5+

Years Backend

3+

AI Systems Built

22+

Technologies

4

Engineering Domains

Backend6
JavaSpring BootPostgreSQLREST APIsDDDgRPC
AI / ML6
LangGraphPythonFastAPIPyTorchRAGLLM Agents
Infrastructure6
KafkaRedisMongoDBDockerKubernetesSupabase
Frontend4
ReactTypeScriptNext.jsTailwind CSS
Java
Spring Boot
PostgreSQL
REST APIs
DDD
gRPC
LangGraph
Python
FastAPI
PyTorch
RAG
LLM Agents
Kafka
Redis
MongoDB
Docker
Kubernetes
Supabase
React
TypeScript
Next.js
Tailwind CSS
Java
Spring Boot
PostgreSQL
REST APIs
DDD
gRPC
LangGraph
Python
FastAPI
PyTorch
RAG
LLM Agents
Kafka
Redis
MongoDB
Docker
Kubernetes
Supabase
React
TypeScript
Next.js
Tailwind CSS
Tailwind CSS
Next.js
TypeScript
React
Supabase
Kubernetes
Docker
MongoDB
Redis
Kafka
LLM Agents
RAG
PyTorch
FastAPI
Python
LangGraph
gRPC
DDD
REST APIs
PostgreSQL
Spring Boot
Java
Tailwind CSS
Next.js
TypeScript
React
Supabase
Kubernetes
Docker
MongoDB
Redis
Kafka
LLM Agents
RAG
PyTorch
FastAPI
Python
LangGraph
gRPC
DDD
REST APIs
PostgreSQL
Spring Boot
Java

// let's connect

Get in Touch

Available for contract work, part-time roles, and exciting AI projects. Let's build something extraordinary together.

~/contact — zsh
$
icellilercihan@gmail.com
Kocaeli, Turkey
Open to remote & hybrid
$

Contract / Freelance

Part-time Engineering Roles

AI Consulting & Architecture

Open Source Collaboration

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