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.

Production AI for enterprise GCP · AWS · Azure Bucharest, Romania · Remote (EU)
6+ yrs
Production AI & cloud
35+
AI & cloud systems shipped
3 clouds
GCP · Azure · AWS
Google-certified
Data & ML Engineer

Experience delivering for

German automotive OEMEU bankEU insurerEnterprise consulting (Reply)
Certified
Google Professional Data EngineerGoogle Professional Machine Learning EngineerUiPath RPA Developer

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.

Highest value

Enterprise RAG Assistant

Custom quote

An 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
LogisticsFinanceInsuranceConsulting
Highest value

Custom AI & Multi-Agent Systems

Custom quote

Multi-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
AutomotiveSupply chainSaaSEnterprise

AI Chatbot for Business

Custom quote

A 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
ClinicsBeauty salonsLogisticsLawyersReal estate

AI Document Processing

Custom quote

Turn 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
FinanceAccountingLegalLogistics

Business Process Automation

Custom quote

Remove the repetitive work — email, invoicing, WhatsApp, and CRM workflows that run themselves.

  • Email automation
  • Invoice processing
  • WhatsApp automation
  • CRM automation
  • Document workflows
SMBsAgenciesLogisticsServices

Cloud Architecture & Data Pipelines

Custom quote

Scalable 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
Data teamsScale-upsEnterprise

Also available — custom web applications & dashboards:

Business Platforms & Dashboards

Client portals, booking systems, and logistics/management dashboards — custom web apps where it pays off.

On request

Company Website

A clean, fast marketing site when you need one. Not the main event.

On request

Selected work

Production systems, not demos

A few representative projects, anonymized by industry.

Automotive · Supply Chain

Multi-agent supply-chain exception management

AWS Bedrock AgentCorePythonFastAPIAthena / SAPDocker

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.

Insurance · Knowledge Assistant

Enterprise RAG assistant over policy & claims documents

Azure OpenAIAzure AI SearchKnowledge graphMongoDBFastAPI

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.

Knowledge Assistant · Reference Architecture

Enterprise knowledge assistant with agents & guardrails

FastAPILangChain / LangGraphVertex AI (Gemini)ChromaDBReactTerraform / Cloud Run

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.

Finance · Document Automation

Romanian e-invoicing & document extraction

PythonOCRGoogle CloudREST APIWeb front end

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.

Banking · Cloud

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.

Apigee XGCPAPI security
Legal · RAG

Construction-Law Legal Assistant

Romanian construction & fire-safety law chatbot — precise article citations, zero hallucination, document-only answers with persistent vector store.

RAGOpenAICitations
Developer Tooling

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.

Neo4jTree-sitterHybrid RAG
Architecture · AI

Microservices Intelligence Agent

Analyzes monolithic codebases and recommends microservice boundaries — detects god classes, circular deps, and drafts a migration plan.

GPT-4ASTRefactoring
Computer Vision

License-Plate Detection (Vision)

YOLOv8 plate detector + dual-engine OCR with video tracking and Romanian-format validation — single-image and video workflows.

YOLOv8OCRByteTrack
Automation · Marketing

Marketing Specialist Agent

An AI agent that researches, plans, and drafts marketing content — automating the repetitive parts of a content workflow.

AgentsContentLLM
Social Analytics

Instagram Profile Analyzer

GPT-4 engagement analysis with 0–100 scoring, competitive benchmarking, and 3-month growth action plans — CLI, web, and API.

GPT-4AnalyticsStreamlit
Media · AI

Video Analyzer & Summarizer

Transcribes video and produces structured summaries — full-stack app with a React front end and Python back end.

TranscriptionSummarizationReact
Finance · AI

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.

GPT-4oStreamlitSignals
Business Automation

AI Task Automator

Turns natural-language instructions into executed tasks — file ops, API calls, and data processing with history tracking.

LangChainAutomationPydantic
Document AI · HR

CV Analyzer

Parses and evaluates CVs at scale — structured extraction and scoring to speed up candidate screening.

Document AIExtractionGCP
AI Application

Smart Road-Trip Cost Calculator

Researches fuel prices, tolls, and vignettes across Europe and produces an optimized, cost-broken-down route plan.

LLMRoutingMaps

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
Get started
Most popular

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
Get started

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
Get started

How it works

From idea to production

01

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.

02

Build

I design and develop the solution in short iterations, with working demos so you see progress — not just status updates.

03

Deploy

Production deployment on your cloud (GCP / AWS / Azure), with security, guardrails, and documentation handed over.

04

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

Claude (Anthropic)GPT-4o / GPT-4Gemini (Vertex AI)Azure OpenAIOpen-source / local models

AI Frameworks & Agents

LangChainLangGraphAWS Bedrock AgentCoreMulti-agent orchestrationGuardrails & evaluation

RAG & Vector Search

ChromaDBQdrantAzure AI SearchVertex AI Vector SearchHybrid vector + graph RAG

Data & Knowledge Graphs

Neo4jBigQueryDataflow / ETLMongoDBTree-sitter (AST)

Backend & APIs

PythonFastAPIPydanticStreamlitREST / async APIs

Frontend

Next.jsReactTypeScriptTailwind CSSVite

Cloud Platforms

Google Cloud (Cloud Run, Vertex AI)AWS (Bedrock)Azure (OpenAI, AI Search)Apigee X (API gateway)

DevOps & Infrastructure

DockerTerraformGitHub ActionsCI/CDCloud Run / serverless

Document AI & Vision

OCR (PaddleOCR / EasyOCR)YOLOv8 detectionInvoice & contract extractionDocument classification

Observability & Quality

OpenTelemetryLangSmith / LangfuseAudit loggingpytest / evaluation suites

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

Romanian (native)Russian (native)English (advanced)Italian (beginner)

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