RAG & business assistants
Assistants that retrieve relevant information from documents, reports and databases before answering. Document ingestion, embeddings, semantic retrieval, metadata filtering, reranking and traceable source context.
Andrei
Dancu
I’m an AI Product Builder. I turn real business workflows into useful AI products.
RAG systems, SaaS prototypes and automation — grounded in hands-on business, design and production experience.
Explore my work ↗
Based in Romania. Open to remote work and international collaboration.
About Me
I’m a Romanian entrepreneur, creative technologist and AI Product Builder. I connect business experience with practical software and thoughtful design.
My background spans advertising production, graphic design, industrial design, marketing, CNC/CAM workflows and business management. I’ve worked with clients, suppliers and production teams, so I start with how work actually gets done.
Today, I build AI-assisted business applications that connect company data, internal workflows, automation and LLM-powered assistants into practical SaaS products. My focus is on RAG systems, AI assistants and agents, internal dashboards, SaaS prototypes and tools that help teams retrieve verified information and make better decisions.
I work with OpenAI and Anthropic APIs, LangChain, LangGraph, LlamaIndex, Supabase, PostgreSQL, pgvector, n8n and modern web technologies. I approach AI as a product layer connected to documents, databases, reports, tasks, clients and operational workflows.
“I build AI systems that answer from real business data and help people make better decisions.”Download my CV ↗
From workflow
to working product.
Useful software starts with a clear problem, the right information and a workflow people can actually use.
AI agents & automation
Multi-step workflows with state, tool calling, structured outputs and approval steps. Connecting CRM, lead follow-up, email and marketing processes through APIs, webhooks and n8n.
SaaS & internal tools
Role-based dashboards, operational portals and MVPs built around real business needs. Product scope, data structure, interface design and integrations work together.
Design & production thinking
Brand identity, visual systems, presentation design, photography, video and 3D product visualization — with practical knowledge of manufacturing, material planning and delivery.
Tools, skills & capabilities
The areas I bring together across AI product work, creative delivery and business operations.
AI Engineering & RAG
RAG architecture, Embeddings, Vector search, Supabase pgvector, PostgreSQL, Metadata filtering, Semantic search, Hybrid search, Reranking, Grounded AI answers, Context retrieval.
LLM Frameworks & APIs
LangChain, LangGraph, LlamaIndex, OpenAI API, Anthropic Claude API, Tool calling, Structured outputs, AI agents, Function calling, Prompt engineering.
Automation & Workflow Systems
n8n, AI workflow automation, Webhooks, CRM automation, Marketing automation, Approval flows, Lead follow-up automation, Email automation, Business process automation.
SaaS & Product Building
React, Supabase, PostgreSQL, API integrations, Dashboard design, Role-based systems, MVP development, Product thinking, UX/UI, SaaS architecture.
Design & Creative
Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Adobe Premiere, After Effects, Graphic design, Branding, UX/UI, Presentation design, Marketing materials, Visual systems, Unreal Engine 5.
Industrial & Production
Autodesk Inventor, CAM workflows, CNC production, DMG MORI, MECAL, ZUND cutting machines, LECTRA cutting machines, Large-format printing, Vehicle wrapping, Signage production, Material planning, Supplier coordination.
Business & Leadership
Entrepreneurship, Client communication, Budget understanding, Time management, Team coordination, Production planning, Sales process thinking, Vendor negotiation, Business ownership.
Experience
A practical path through building businesses, leading production and designing products.
Feb 2023 — May 2026
Founder & General Manager (Exit)
Signistic Group SRL · Sibiu / Bucharest
Founded and led a branding and advertising production company. This hands-on business background now informs how I approach AI-assisted SaaS products and operational workflows.
- Led a four-person branding and production agency, covering creative direction, client accounts, production planning, supplier coordination and P&L.
- Managed vehicle wraps, large-format signage and branded environments from initial brief and design through sourcing, print production and installation.
- Delivered projects for 70+ clients across retail, automotive and hospitality, with direct ownership of supplier negotiations and vendor relationships.
- Introduced Unreal Engine 5 into client presentations to create photorealistic mockups, reduce revision rounds and help clients approve designs.
- Built repeatable production workflows for managing several accounts while maintaining quality and delivery standards.
Nov 2022 — Aug 2024
Industrial Designer
LANCO – Dr. Lange GmbH & Co. KG · Tălmaciu
- Led a production team of six, coordinating daily manufacturing against technical specifications, production targets and delivery deadlines.
- Developed 3D models for Clear Span Deployable Shelter TENT, taking concepts from 2D drawings toward physical products.
- Programmed and optimized CAM workflows for DMG MORI and MECAL CNC machinery to produce high-precision industrial components.
- Built and validated physical prototypes before full-scale manufacturing.
- Improved tool procurement and CNC workflow efficiency to reduce overhead and material waste.
Nov 2021 — Nov 2022
Marketing Specialist
LANCO – Dr. Lange GmbH & Co. KG · Tălmaciu
- Produced print advertising, brochures, exhibition materials and digital content for sales teams in Germany, Norway and Italy.
- Created 3D-rendered product visuals for client presentations and clearer pre-sales communication.
- Shot and post-processed product photography for the company’s e-commerce platform.
- Produced product tutorials and promotional films, and captured aerial footage for internal site mapping and visual documentation.
Nov 2020 — Nov 2021
Founder
DANKMEDIA Studio & Art · Sibiu
- Founded and managed a creative studio providing branding, signage, vehicle wrapping and drone cinematography for local businesses.
- Operated cutter plotters and large-format printers, delivering vinyl wrap and signage projects end to end.
- Managed client communication, scoping, production and delivery independently.
Sep 2018 — Jul 2020
Cutting Technician & Trainer
Faurecia · Tălmaciu, Sibiu
- Operated and programmed ZUND and LECTRA industrial cutting machines in high-volume automotive manufacturing.
- Trained and certified new operators on machine workflows, technical procedures and production standards.
- Worked to demanding production KPIs in a fast-paced manufacturing environment.
Education & learning
- High school graduate.
- Attended university; final licence degree still pending.
- Ongoing practical learning through entrepreneurship, production, design, industrial workflows, marketing and AI-assisted software building.
Romanian & English
Romanian: native.
English: good professional level.
Used English daily at LANCO in meetings with colleagues from Germany, Italy, Norway and France. It has not been a daily working language since around 2024; I’m confident in reactivating it quickly.
My Projects
Three practical products exploring how teams, commercial data and customer services can work better together.
Team Manager
One workspace for construction teams, subcontractors, daily reports and project documents.
Dinoco ERP
From customer request to quotation, order and delivery — with commercial information in one place.
Delta Aqua
A digital service platform connecting water utility customers with the operator’s internal team.
Product prototypes and demonstration environments. Live services and production readiness are described separately in each case study.
Let’s build
something useful.
I’m looking for a role where I can build practical AI-assisted business applications, RAG systems, SaaS prototypes, internal tools and workflow automation.
I’m especially interested in teams building products for operations, construction, utilities, CRM, marketing automation, marketplaces, business dashboards and internal process digitalization.
AI Product Builder, RAG Developer, AI Workflow Automation Specialist, Junior AI Engineer, AI-assisted SaaS Builder, Creative Technologist, LLM Application Developer, No-code / Low-code AI Automation, Product Designer with AI tools.
I’m open to remote work, hybrid work, relocation and international collaboration — particularly with a product team, startup or software company building real products.
How I position my work +
My value is in connecting business problems, product design, workflows and LLMs with real company data. I build assistants, dashboards, automations, RAG tools and SaaS prototypes using existing LLM APIs and open-source frameworks.
I have not trained foundation models from scratch. My focus is practical AI product development, and the projects here are presented at their actual prototype or demonstration stage.
My approach to security & client data +
I start with the data, the people who need access and the impact of a mistake. I prefer minimal access, private documents, carefully scoped AI integrations and evidence that the controls work.
Read my principles & scenarios ↗Contact Me
Have a role, a product challenge
or an idea worth exploring?
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