Senior AI/ML & Cloud Engineer · LLM Systems
AI Solutions, Business Automation & Cloud Platforms
I design and ship production AI systems — RAG assistants, multi-agent workflows, and document automation — for enterprises in automotive, banking, and insurance. Now available for your business.
Experience delivering for
Services
Where AI pays for itself
Every project is scoped to exactly what you need, with a clear quote after a free 30-minute call — no surprises. Most projects pay for themselves in the time they save.
Enterprise RAG Assistant
Custom quoteAn internal AI that actually knows your documents — semantic search, PDF analysis, and grounded answers with citations.
- Document ingestion & chunking
- Semantic / hybrid search
- Knowledge base + PDF analysis
- Guardrails & source citations
- Admin dashboard
Custom AI & Multi-Agent Systems
Custom quoteMulti-agent workflows, AI copilots, and analytics platforms that automate complex, multi-step business processes.
- Multi-agent orchestration
- AI copilots & assistants
- Recommendation systems
- AI analytics platforms
- Cloud-native deployment
AI Chatbot for Business
Custom quoteA website chatbot that answers FAQs, captures leads, and books appointments — wired to GPT, Claude, or Gemini.
- GPT / Claude / Gemini integration
- Website chatbot widget
- FAQ automation
- Lead capture
- Admin dashboard
AI Document Processing
Custom quoteTurn invoices, contracts, and PDFs into structured data — OCR, extraction, and classification at scale.
- OCR & data extraction
- Invoice & e-invoice processing
- Contract analysis
- Document classification
- API + export pipelines
Business Process Automation
Custom quoteRemove the repetitive work — email, invoicing, WhatsApp, and CRM workflows that run themselves.
- Email automation
- Invoice processing
- WhatsApp automation
- CRM automation
- Document workflows
Cloud Architecture & Data Pipelines
Custom quoteScalable cloud foundations and ETL pipelines on GCP, AWS, or Azure — with reporting that stakeholders trust.
- GCP / AWS / Azure architecture
- BigQuery & Dataflow pipelines
- API integration
- Reporting & dashboards
- CI/CD & infrastructure
Also available — custom web applications & dashboards:
Business Platforms & Dashboards
Client portals, booking systems, and logistics/management dashboards — custom web apps where it pays off.
Company Website
A clean, fast marketing site when you need one. Not the main event.
Selected work
Production systems, not demos
A few representative projects, anonymized by industry.
Multi-agent supply-chain exception management
Challenge — A German automotive OEM's material disposition team manually triaged supply-chain exceptions across SAP data — slow, reactive, and hard to scale.
Solution — A multi-agent system (planning → cognition → action layers) on AWS Bedrock that detects exceptions, runs inventory-forecast and transport analysis, and drafts escalations automatically.
Result — Disponenten get analysis and recommended actions instead of raw alerts — exception handling shifts from reactive to proactive.
Enterprise RAG assistant over policy & claims documents
Challenge — An EU insurer's staff spent hours searching scattered policy documents and internal knowledge for answers.
Solution — A retrieval-augmented chat assistant combining vector search, a knowledge graph, and guardrails — grounded answers with citations, served through a clean chat UI.
Result — Employees get cited, document-grounded answers in seconds instead of manual search across systems.
Enterprise knowledge assistant with agents & guardrails
Challenge — Organizations want a trustworthy internal AI — one that answers from their own knowledge, refuses to hallucinate, and leaves an audit trail for compliance.
Solution — A full production architecture: RAG core, LangGraph agent orchestration, input/output guardrails, audit logging, and a React chat UI — deployable to Google Cloud Run via Terraform, with versioned prompts and observability.
Result — A reference-grade assistant: grounded, governed, and observable — the blueprint I deploy for regulated and enterprise clients.
Romanian e-invoicing & document extraction
Challenge — Manual handling of invoices and regulatory e-invoice formats created slow, error-prone back-office work.
Solution — A full-stack e-invoicing app with OCR-driven extraction, validation, and structured export — front end and back end deployed on Google Cloud.
Result — Invoice data is captured and validated automatically, cutting manual entry and compliance overhead.
More work
A deeper portfolio
Beyond the headline projects — a sample of AI, automation, and cloud systems I've designed and shipped across industries.
API Security Gateway (Apigee X)
Apigee X gateway in front of an EU bank's internal app — API-key auth, rate limiting, and authorization, with Drupal integration. Working POC.
Construction-Law Legal Assistant
Romanian construction & fire-safety law chatbot — precise article citations, zero hallucination, document-only answers with persistent vector store.
Code Knowledge Graph + RAG
Parses Java codebases via tree-sitter into a Neo4j knowledge graph, then answers natural-language questions with hybrid vector + graph RAG.
Microservices Intelligence Agent
Analyzes monolithic codebases and recommends microservice boundaries — detects god classes, circular deps, and drafts a migration plan.
License-Plate Detection (Vision)
YOLOv8 plate detector + dual-engine OCR with video tracking and Romanian-format validation — single-image and video workflows.
Marketing Specialist Agent
An AI agent that researches, plans, and drafts marketing content — automating the repetitive parts of a content workflow.
Instagram Profile Analyzer
GPT-4 engagement analysis with 0–100 scoring, competitive benchmarking, and 3-month growth action plans — CLI, web, and API.
Video Analyzer & Summarizer
Transcribes video and produces structured summaries — full-stack app with a React front end and Python back end.
Trading Signal System
Multi-source market data with dual-model AI validation producing BUY/SELL/HOLD signals plus entry, take-profit, and stop-loss levels.
AI Task Automator
Turns natural-language instructions into executed tasks — file ops, API calls, and data processing with history tracking.
CV Analyzer
Parses and evaluates CVs at scale — structured extraction and scoring to speed up candidate screening.
Smart Road-Trip Cost Calculator
Researches fuel prices, tolls, and vignettes across Europe and produces an optimized, cost-broken-down route plan.
Industries
Built for businesses like yours
Logistics
Supply-chain automation, exception detection, dashboards
Beauty & Clinics
Booking assistants, WhatsApp AI, lead qualification
Finance & Insurance
RAG assistants, document & invoice automation
Legal
Contract analysis, document classification, research copilots
Real Estate
Lead-capture chatbots, listing automation
Consulting
Internal knowledge bases, AI analytics
Monthly plans
Keep your AI sharp
One-time builds are great. Systems that keep improving are better. Optional retainers for ongoing support — quoted per engagement once we know what we're maintaining.
AI Maintenance
For one live system
Keep small AI deployments healthy and up to date.
- Uptime monitoring
- Minor fixes
- Dependency updates
- Email support
AI Growth
For systems the business depends on
Continuous improvement for systems that matter to the business.
- Everything in Maintenance
- Feature updates
- Prompt & model improvements
- Cloud cost optimization
- Monthly review
Enterprise Support
For production-critical AI, with an SLA
Guaranteed response times, proactive monitoring, and a roadmap you can plan around.
- SLA & priority response
- Proactive monitoring & alerting
- Feature requests
- AI / RAG optimization
- Quarterly roadmap
How it works
From idea to production
Discovery
A short call to understand the process, the data, and where AI actually moves the needle. You get a clear scope and fixed quote.
Build
I design and develop the solution in short iterations, with working demos so you see progress — not just status updates.
Deploy
Production deployment on your cloud (GCP / AWS / Azure), with security, guardrails, and documentation handed over.
Support
Optional monthly plan to monitor, improve, and extend the system as your needs grow.
Tech stack
The toolkit behind the builds
Battle-tested across enterprise and product work — I pick the right tool for the job, not the trendiest one.
LLMs & AI Models
AI Frameworks & Agents
RAG & Vector Search
Data & Knowledge Graphs
Backend & APIs
Frontend
Cloud Platforms
DevOps & Infrastructure
Document AI & Vision
Observability & Quality
About
Marian Golubenco
Senior AI/ML & Cloud Engineer · LLM Systems
Senior AI/ML & Cloud Engineer with 6+ years building production AI — multi-model LLM architectures, RAG pipelines, and multi-agent systems — for enterprises in automotive, banking, and insurance. I pair deep engineering with a strong grasp of business processes to ship scalable, production-ready solutions.
Bucharest, Romania · Remote (EU)
Certifications
- Google Professional Data Engineer
- Google Professional Machine Learning Engineer
- UiPath RPA Developer
Education
- M.Sc. Computer Science
- B.Sc. Computer Science
Languages
Why AI · FAQ
Questions worth asking before you start
Straight answers to what businesses actually ask me — no jargon, no hype.
Because your team is spending hours every week on work AI can do in seconds — answering the same questions, processing documents, copying data between systems. Automating that frees people for higher-value work, cuts errors, and lets you respond to customers instantly. The businesses adopting it now are pulling ahead; the cost of waiting is the hours you keep paying for manually.
Let's talk
Have a process worth automating?
Book a free 30-minute call. We'll find where AI saves the most time or money — and you'll leave with a clear next step, no obligation.
- Free, no-obligation discovery call
- Fixed quote before any work starts
- Reply within one business day