HARUNGEÇIT
Full Stack Developer & AI Engineer
- 01 Full Stack Developer
- 02 AI Engineer
- 03 DevOps & Security
- 04 Laravel Ecosystem Expert
I build production systems with large language models — RAG pipelines on PostgreSQL + pgvector, fine-tuning workflows and multi-agent orchestration. 15+ years in software, 2+ years deep in AI engineering, anchored in the Laravel ecosystem.
About Me
Full Stack Developer & AI Engineer · Istanbul, Türkiye
I'm a Full Stack Developer & AI Engineer who designs scalable systems and builds with Large Language Models every day. With 15+ years in software and 2+ years of hands-on AI engineering, I also work as a DevOps Engineer, System Administrator, Cybersecurity Specialist and Software Advisor.
On the AI side I build production RAG pipelines on PostgreSQL + pgvector, design fine-tuning and PageIndex-based training workflows, and orchestrate multiple LLMs together — managing token budgets, system prompts, custom skills and web-search agents. My daily toolkit is LLM-driven: Claude Code, Codex, Gemini CLI, OpenCode, Commander.ai, Cursor, TRAE and VS Code AI agents.
I'm deeply passionate about the Laravel Ecosystem — Livewire, Inertia.js, Filament, Forge/Vapor. Backend expertise spans PHP, JavaScript, Go, SQL and Python. I run AI-driven development, testing, staging and production workflows, with LLM-based code review and AI security scanning wired into CI/CD on Docker, Kubernetes, Nginx and AWS/GCP.
AI Engineering
2+ years building production AI — RAG, fine-tuning, multi-agent orchestration & an AI-driven software lifecycle. I build with LLMs, every day.
Development
LLM pair-programming & agents writing, refactoring and documenting code.
Test
AI-generated test suites, coverage analysis & automated bug triage.
Staging
LLM-based code review, AI security scanning & release-note generation.
Production
AI-assisted CI/CD, anomaly detection & intelligent incident response.
AI-Assisted Development
I develop primarily through LLM-based CLIs and coding agents — driving features end-to-end from the terminal, from scaffolding to refactor to docs.
AI IDEs & Agents
Heavy daily use of agentic IDEs and in-editor assistants — running autonomous agents for multi-file edits, reviews and repo-wide tasks.
RAG & Vector Search
Production RAG on PostgreSQL + pgvector — embeddings, chunking, hybrid & semantic search, reranking and PageIndex document indexing.
LLM Engineering
Orchestrating multiple LLMs on a single task, designing system prompts, building custom skills, and accounting for tokens & cost across providers.
Web-Search Agents & Tools
Building web-search skills and autonomous research agents that expand an LLM's source count, fetch live context and ground answers in citations.
Fine-Tuning & Training
Designing fine-tuning and PageIndex-based training pipelines — dataset curation, evaluation harnesses and shaping model behavior to a domain.
AI-Powered Security
Using LLM agents for automated code review, code security analysis, vulnerability detection and secure-by-default remediation across the codebase.
Reliability & Optimization
Defining LLM boundaries & determinism, adding guardrails, and optimizing performance, resource consumption and stability of AI systems in production.
AI-Driven CI/CD
LLM-based automation across dev, test, staging and production — generating pipelines, reviewing diffs and triaging failures automatically.
Technical Skills
manifest — the full stack I build with
Work Experience
tail -f career.log
Full Stack Developer & AI Engineer
- Developing with Zend Framework, Laravel, NodeJS and ExpressJS
- RFID technologies for textile tracking, inventory management and HR
- Building RAG pipelines on PostgreSQL + pgvector and integrating LLM features
- AI-driven development, LLM-based code review and AI security scanning in CI/CD
Software Advisor & AI Engineer
- Developing with Laravel, Python, TensorFlow, NodeJS and Alpine
- AI-supported exercise technologies and LLM-powered features
- Fine-tuning & PageIndex training workflows and multi-LLM orchestration
- Web-search agents and custom skills with token & cost optimization
Full Stack Developer
- Cargo company integrations (DHL, FedEx, UPS)
- API integrations to Oracle Netsuite ERP
- Reward and referral programs; React Native webview apps
- Stock system live update and export service
Full Stack Developer
- Sentiment analysis applications for schools
- Docker environment for server installation
- Corporate web solutions and e-commerces
Full Stack Developer / Freelance
- Corporate websites and e-commerce sites
- Templates and plugins for WordPress, Opencart, Jitsi, Drupal
- Server setup, DNS, network configuration and virtualization
Featured Projects
~/projects · ls -la
RAG Knowledge Engine
Retrieval-Augmented Generation over private docs using PostgreSQL + pgvector, embeddings, hybrid search, reranking and PageIndex — grounded, cited answers from multiple LLMs.
Multi-Agent AI Toolkit
LLM orchestration layer that routes tasks across multiple models with custom skills, web-search agents, token accounting and cost optimization — powering an AI-driven workflow.
RFID Tracking System
Enterprise RFID solution for textile tracking, inventory management and personnel identification with HR integration capabilities.
AI Training Platform
Smart training platform with AI-supported exercises, detailed analytics and cross-platform compatibility (web, mobile, hardware).
DevTools Platform
Comprehensive developer tools platform — formatters, converters, generators and productivity utilities.
Smart Changelists
VS Code extension bringing JetBrains-style changelist functionality — save file snapshots, manage versions and selectively commit changes.
PHP Email Validator
Comprehensive PHP library for email validation — format checking, disposable email detection (4,900+ domains) and MX record verification.
Vigilon
Multi-platform service monitoring and alerting system with real-time status updates, Telegram notifications and role-based access control.
UBL Viewer
Browser extension to view e-Invoice, e-Waybill and UBL XML documents. Supports Turkish GİB, UBL 2.1, Peppol BIS and EN16931 formats.
E-commerce Platform
Full-featured e-commerce platform with cargo integrations (DHL, FedEx, UPS), stock management, barcode system and Oracle Netsuite ERP integration.
BRAISLATOR
Instant translation of Turkish texts into Braille for visually impaired individuals, with real-time speech-to-text translation support.
Get In Touch
Feel free to reach out for collaborations or just a friendly chat.
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KVKK / GDPR Compliance · Gizlilik Politikası
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