Olivier Halupczok

GenAI Engineer

Building

About

Olivier Halupczok

I build AI systems that work in production—not just demos. 3 years shipping GenAI products (voice AI, multi-agent automation, RAG pipelines) plus 6 years in software engineering taught me what most engineers learn too late: the hard part isn't building AI, it's making it reliable at scale.

Member of the AI Working Group assisting the Polish Ministry of Digital Affairs on AI adoption strategy—bringing lessons from shipping real products into policy conversations.

Skills

Core Specialization

Voice AIMulti-agent SystemsProduction RAGLLM EvaluationPrompt Engineering

GenAI Stack

ClaudeOpenAIGeminiLangGraphCrewAIPydanticAIDspyGuardrails

Production Infrastructure

GCP Vertex AIAWSDockerCI/CDLLM Observability

Full-stack

PythonFastAPITypeScriptNode.jsReactPostgres

Projects

Voice-to-Voice AI English Tutor

GenAI Engineer / AI Tech Lead

End-to-end GenAI architecture for AI-driven English learning—real 1:1 lessons with a native speaker feel. Hybrid AI stack combining multiple LLM providers with open-source speech models (STT/TTS/S2S). GCP infrastructure for GPU inference, multi-agent system generating adaptive lesson plans.

Multi-LLMVoice AIGCPMulti-agent

Multi-agent Automation Center

GenAI Engineer

B2B task automation with Gmail/Outlook integration. State-of-the-art memory and retrieval system. Continuously gathers context, groups messages, automates calendars.

1K emails/hr$8/1K msgs
Multi-agentEmail APIRAGAutomation

Radio Analytics Big Data System

Software Engineer

Redesigned production big data system analyzing global radio signals. Migrated Java → Python, reduced microservices count, redesigned DB schema. Added real-time anomaly detection and ML-based transmission prediction.

Processes 157 GB/mo65% cost ↓
PythonFastAPIKafkaSparkML

Let's Connect

Open to full-time GenAI Engineer roles. Based in Poland, available globally.

Let's talk. Book a quick call or use the form below.