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Perjés László

@perjslszl

Python GenAI back-end developer building production AI advertising pipelines that turn product data into images, video, and ads.

Hungary

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What I'm looking for

I’m looking for permanent or contract back-end development roles, remotely in the EU or US, and I’m open to relocating within the EU. I’m focused on GenAI implementation, B2B projects involving AI-driven workflows, multi-model systems, and applied LLM/API engineering.

I built an automated product advertising system that takes product data through LLM-generated content, image generation, and video composition, producing a final editing plan in JSON. The pipeline reduced manual editing time from hours to minutes.

Since 2022, I’ve developed Python GenAI systems, including ComfyUI workflows and custom nodes, multi-model APIs, and production deployments on distributed GPU infrastructure. I also built a natural-language database interface that combines SQL filtering with pgvector similarity search, permission handling, and guardrails.

Since 2010, I’ve developed PHP back ends, including REST APIs, payment integrations, and geospatial platforms. My open-source ComfyUI nodepack includes more than 20 architectures, and I continue its development in a private repository.

Experience

Work history, roles, and key accomplishments

Current

Python GenAI Back-End Developer

Current

Self Employed

Jan 2022 - Present (4 years 9 months)

Developed production-grade generative AI systems including automated advertising pipelines, LLM-based model routing, ComfyUI workflows, and hybrid RAG architectures. Deployed on distributed GPU infrastructure with FastAPI endpoints.

Python fastAPI ComfyUI Anthropic OpenAI Gemini Mistral Lang Chain LlamaIndex PostgreSQL Pgvector Qdrant BGE M3 Sentence Transformers PyTorch CUDA Modal RunPod MassedCompute GCP Ollama LLamacpp VLLM Hugging Face Docker Git

Current

PHP Back-End Developer

Current

Self Employed

Jan 2010 - Present (16 years 9 months)

Designed enterprise database architectures, developed RESTful APIs with OAuth2, integrated payment systems, and built geospatial tourism platforms with real-time GPS tracking. Worked on international projects across Slovakia, Canada, USA, and Italy.