Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm Grzegorz Jacek Zbiec, a Senior Software Engineer and AI Engineer with over a decade of experience delivering Python-based full-stack applications, AI/ML systems, and data pipelines. I specialize in Django and FastAPI for scalable APIs, secure AI service integrations, and production-grade API key authentication. I work hands-on with PyTorch, TensorFlow, and Keras, and I’ve built LLM/SLM, TTS, chatbots, and advanced image processing workflows with OpenCV. I also design knowledge-driven AI using vector databases like Pinecone and graph databases like Neo4j for retrieval-augmented systems. My projects span eCommerce, SaaS, social media, and IoT on AWS and GCP, with robust DevOps, CI/CD, and modern software engineering practices (TDD, DDD, hexagonal architecture, and E2E testing with Playwright and Cypress). I enjoy mentoring teams and delivering reliable, scalable software.…I'm Grzegorz Jacek Zbiec, a Senior Software Engineer and AI Engineer with over a decade of experience delivering Python-based full-stack applications, AI/ML systems, and data pipelines. I specialize in Django and FastAPI for scalable APIs, secure AI service integrations, and production-grade API key authentication. I work hands-on with PyTorch, TensorFlow, and Keras, and I’ve built LLM/SLM, TTS, chatbots, and advanced image processing workflows with OpenCV. I also design knowledge-driven AI using vector databases like Pinecone and graph databases like Neo4j for retrieval-augmented systems. My projects span eCommerce, SaaS, social media, and IoT on AWS and GCP, with robust DevOps, CI/CD, and modern software engineering practices (TDD, DDD, hexagonal architecture, and E2E testing with Playwright and Cypress). I enjoy mentoring teams and delivering reliable, scalable software.

GRZEGORZ JACEK ZBIEC

AI Engineer, Full Stack Developer, Back-End Developer, +2





I'm Grzegorz Jacek Zbiec, a Senior Software Engineer and AI Engineer with over a decade of experience delivering Python-based full-stack applications, AI/ML systems, and data pipelines. I specialize in Django and FastAPI for scalable APIs, secure AI service integrations, and production-grade API key authentication. I work hands-on with PyTorch, TensorFlow, and Keras, and I’ve built LLM/SLM, TTS, chatbots, and advanced image processing workflows with OpenCV. I also design knowledge-driven AI using vector databases like Pinecone and graph databases like Neo4j for retrieval-augmented systems. My projects span eCommerce, SaaS, social media, and IoT on AWS and GCP, with robust DevOps, CI/CD, and modern software engineering practices (TDD, DDD, hexagonal architecture, and E2E testing with Playwright and Cypress). I enjoy mentoring teams and delivering reliable, scalable software.…I'm Grzegorz Jacek Zbiec, a Senior Software Engineer and AI Engineer with over a decade of experience delivering Python-based full-stack applications, AI/ML systems, and data pipelines. I specialize in Django and FastAPI for scalable APIs, secure AI service integrations, and production-grade API key authentication. I work hands-on with PyTorch, TensorFlow, and Keras, and I’ve built LLM/SLM, TTS, chatbots, and advanced image processing workflows with OpenCV. I also design knowledge-driven AI using vector databases like Pinecone and graph databases like Neo4j for retrieval-augmented systems. My projects span eCommerce, SaaS, social media, and IoT on AWS and GCP, with robust DevOps, CI/CD, and modern software engineering practices (TDD, DDD, hexagonal architecture, and E2E testing with Playwright and Cypress). I enjoy mentoring teams and delivering reliable, scalable software.

Available to hire

I’m Grzegorz Jacek Zbiec, a Senior Software Engineer and AI Engineer with over a decade of experience delivering Python-based full-stack applications, AI/ML systems, and data pipelines. I specialize in Django and FastAPI for scalable APIs, secure AI service integrations, and production-grade API key authentication. I work hands-on with PyTorch, TensorFlow, and Keras, and I’ve built LLM/SLM, TTS, chatbots, and advanced image processing workflows with OpenCV.

I also design knowledge-driven AI using vector databases like Pinecone and graph databases like Neo4j for retrieval-augmented systems. My projects span eCommerce, SaaS, social media, and IoT on AWS and GCP, with robust DevOps, CI/CD, and modern software engineering practices (TDD, DDD, hexagonal architecture, and E2E testing with Playwright and Cypress). I enjoy mentoring teams and delivering reliable, scalable software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior Software Engineer at Luxoft

January 1, 2022 - January 1, 2025

Led a cross-functional backend team (Python, AI chatbot, Data Engineering, Node.js) delivering production-grade microservices and real-time APIs that scaled to thousands of active users with 99.99% service uptime. Architected and delivered AI integrations using Vertex AI + OpenAI APIs, including secure API key management, message routing, and feedback-loop accuracy monitoring, which improved automated support resolution by 40%. Built high-availability data ingestion pipelines using Airflow + Spark + Pub/Sub + Postgres/BigQuery, reducing data freshness lag by 65% and improving visibility into platform operations. Productionized RAG chat systems with Pinecone vector search and knowledge embeddings — boosting assistant adoption and self-serve success by 35%. Established DevOps automation with Docker, Kubernetes, GitHub Actions CI/CD, IaC, and progressive delivery — 3× faster deployment cycles with zero-downtime rollouts. Mentored engineers in modern backend and AI practices, improvin

Full-Stack Developer at Luxoft

January 1, 2015 - January 1, 2022

Developed a national rental exchange platform for the UAE using Python + React + GIS, delivering real-time property availability, rental history, and pricing evaluation. Built geospatial features with PostGIS and spatial indexing for near-instant map rendering; engineered geo-ETL pipelines to ingest and reconcile data from government portals, third-party providers, and IoT sensors; integrated AI and LLM services for market analytics, automated pricing estimation, and property classification; launched an intelligent rental chatbot; implemented vector search with Pinecone for similarity matching; improved security with OAuth2 authentication; set up CI/CD pipelines with GitHub Actions; migrated workloads to AWS/GCP with autoscaling.