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Amirmohsen Hejazi

@amirmohsenhejazi

Message

I build reliable LLM products, RAG workflows, and multi-agent systems.

Germany

Message

What I'm looking for

I'm looking to build production-oriented LLM products and reliable AI workflows, especially RAG and agentic systems, where I can own delivery from planning and implementation through evaluation and deployment.

I've delivered DB-Mind at PartsEurope, a multi-agent RAG assistant that translates natural-language questions into enterprise SQL queries. I took it from project definition through Python backend and web-interface implementation, evaluation, documentation, and deployment to company servers.

DB-Mind achieved 90.4% execution accuracy on the Spider benchmark and reduced average query-generation time by 70% through RAG optimization. The prototype entered productive company use.

I'm now working in operational technology at PartsEurope, combining specialized maintenance, control-system software optimization, and hybrid solutions that connect operational data with modern AI architectures. I focus on reliability, observability, structured diagnosis, and software-supported optimization.

Beyond enterprise work, I've built Transim, a real-time speech-translation web app, Jobai, an AI-powered application assistant, and NEXUS, a decision-making web application. I build with Python, RAG, agents, structured outputs, validation and fallback logic, automated evaluation, and API integrations.

Experience

Work history, roles, and key accomplishments

Current

Maintenance Technician & Data Administrator

Current

PartsEurope

Feb 2026 - Present (6 months)

Performs specialized maintenance while optimizing control-system software in an operational technology environment. Develops hybrid solutions connecting operational data with modern AI-based architectures.

Operational Technology Control Systems Data Administration AI Integration Reliability Observability

AI Developer - Master's Thesis / Working Student

PartsEurope

Apr 2025 - Aug 2025 (4 months)

Owned design and delivery of DB-Mind, a multi-agent RAG assistant for natural-language queries over enterprise SQL data. Achieved 90.4% execution accuracy on the Spider benchmark and reduced average query-generation time by 70% through RAG optimization.

Python RAG Multi Agent Systems Vector Databases Structured Outputs Validation SQL fastAPI REST APIs Git GitHub CI CD Transformers Hugging Face OpenAI API GCP

Intern - Maintenance Data Administration & AI-Assisted Data Structuring

PartsEurope

Jan 2025 - Mar 2025 (2 months)

Structured and validated technical master data, extracted and prepared SQL data, and supported bulk imports and exports. Completed the full AI-assisted master-data restructuring 30% ahead of schedule and improved accessibility.

Data Structuring Data Validation SQL Data Extraction Data Management

Education

Degrees, certifications, and relevant coursework

Trier University of Applied Sciences

Master of Science, Interdisciplinary Engineering

2023 - 2025

Grade: 1.5

Pursued a Master of Science in Interdisciplinary Engineering with a specialization in Automotive Engineering and an AI/ML focus. Achieved a final grade of 1.5 (very good) and a thesis grade of 1.0 (very good).