Hi, I’m Furkan.
Founding Engineer / AI Product Engineer
I'm a Founding Engineer and AI Product Engineer building agentic AI systems, RAG platforms, backend infrastructure, browser extensions, and production-grade SaaS products.

About
Applied AI meets product engineering.
Furkan Colhak is a Berlin-based Founding Engineer and AI Product Engineer focused on building AI-native SaaS products from zero to one. His work spans agentic AI, RAG systems, multi-LLM architectures, backend platforms, cloud infrastructure, browser extensions, cybersecurity, document intelligence, automation, and applied machine learning. He has built and shipped products such as PhiShark and easyliterature, owning system design, microservices, APIs, databases, authentication, security, CI/CD, deployment, and product execution.
Products
AI-native SaaS, built from zero to one.

AI-powered phishing and URL risk analysis platform.
PhiShark is an AI-first B2B SaaS/PaaS platform for phishing and URL risk analysis. It mimics a human security analyst using agentic AI workflows and orchestrates 40+ Go REST microservices for URL, domain, DNS, TLS, infrastructure, web content, proxy analysis, enrichment, and risk scoring.

AI-native literature review platform built for researchers.
easyliterature is an AI-native literature review SaaS platform that helps researchers discover papers, parse documents, run RAG-based research chats, extract structured evidence, and generate research reports using multi-agent workflows.

OCR and document intelligence SaaS.
ExtractMyText is an OCR and document intelligence product for extracting text from PDFs and images. It includes asynchronous OCR workflows, provider-based OCR architecture, API access, billing-oriented product flows, and self-hosted deployment patterns. Some OCR/document-processing concepts and services are also reused inside easyliterature.
Experience
Building products, shipping code.
Built and shipped an AI-first phishing and URL risk analysis SaaS/PaaS from zero to one — owning architecture, backend, cloud infra, browser extension, auth, security, and deployment. Designed a Google ADK-based agentic AI orchestrating 40+ Go microservices for multi-layered URL risk analysis and scoring.
Developed scalable infrastructure with Go, Google Cloud Run, BigQuery, Firestore, Kafka, and cost-optimized AI workflows. Implemented public/private APIs, real-time extension telemetry, auth flows, and integration-ready automation for customer-facing workflows.
Owned full productization including API-first access, usage-based pricing, CI/CD, demo environments, pilot deployments, and go-to-market execution.
Built an AI-native literature review SaaS from zero to one with Next.js, Go REST API, PostgreSQL, Redis, MinIO, and microservices. Designed a multi-LLM architecture supporting Gemini, Claude, OpenAI APIs, and local models via Ollama for search, RAG chat, extraction, and report generation.
Implemented end-to-end ingestion and RAG pipelines with LightRAG vector/graph hybrid retrieval, SSE streaming, semantic search, citation-grounded answers, and block-level evidence tracing. Built scholarly API integration, LLM-first extraction, and Google ADK multi-agent report generation.
Owned system design, backend, auth/security, and full product workflows from database to deployment.
Built a full-stack OCR SaaS from zero to one with Next.js, Go, PostgreSQL, MinIO, and Docker Compose. Designed async OCR workflows with file validation, job queue, polling, markdown rendering, credit-based billing, API key management, and webhooks.
Implemented a flexible provider architecture supporting LlamaParse, Mistral OCR API, and self-hosted models via Ollama, with Go worker pools and resilient background processing. Owned system design, CI/CD, and self-hosted production infrastructure.
Developed a production AI chatbot interface for natural-language security platform interaction — scan triggering, asset/vulnerability lookup via LangChain RAG with Qdrant, Supabase, FastAPI, and vector search. Improved alert accuracy by 8% through prompt engineering and model iteration.
Built and productionized ML detectors (Login Page, File Upload) and developed n8n automation workflows for pentest report validation, scanner comparison, and LLM-powered summarization.
Led applied AI/ML research across NLP, computer vision, Transformers, and cybersecurity. Built automated pipelines for large-scale data processing, model training, and evaluation. Created the MTLP-Dataset with 100K+ samples for ML research.
Authored peer-reviewed papers and a book chapter in applied AI, ML, computer vision, and cybersecurity. Translated research into applied prototypes and production-ready ML systems.
Assisted in delivering university courses on Data Intelligence and Statistical Analysis — data preprocessing, visualization, hypothesis testing, statistical analysis, and linear models.
Skills
Full-stack AI product engineering.
Publications
Authored & co-authored research.
Privacy-Preserving Smart Surveillance with Cross-Dataset Violence Detection and Decentralized Evidence Governance
H Coşkun, F Çolhak, A Kulakov, V Dimitrova
Accelerating IoV Intrusion Detection: Benchmarking GPU-Accelerated vs CPU-Based ML Libraries
F Çolhak, H Coşkun, TNR Cyrille, T Hoxa, Mİ Ecevit, MN Aydın
Cybersecurity Monitoring in Vital Utilities Infrastructure: Integrating Specialized Open-Source Intelligence Tools
F Çolhak, MI Ecevit, H Dağ, R Creutzburg
Phishing Website Detection Through Multi-model Analysis of HTML Content
F Çolhak, MI Ecevit, BE Uçar, R Creutzburg, H Dağ
Transfer Learning for Phishing Detection: Screenshot-Based Website Classification
F Çolhak, Mİ Ecevit, H Dağ
SecureReg: Combining NLP and MLP for Enhanced Detection of Malicious Domain Name Registrations
F Çolhak, MI Ecevit, H Dağ, R Creutzburg
Comparing Deep Neural Networks and Machine Learning for Detecting Malicious Domain Name Registrations
F Çolhak, MI Ecevit, H Dağ, R Creutzburg
Garbage in, Garbage Out: A Case Study on Defective Product Prediction in Manufacturing
F Çolhak, BE Uçar, İ Saygut, B Düzgün, F Demirkıran, H Dağ
Get in Touch
Let’s build something.
Open to founding engineer roles, applied AI engineering roles, technical collaborations, AI product consulting, and research-driven product opportunities.