Consulting
Work with me
AI Engineering Lead and PhD researcher in AI/ML, certified in Claude by Anthropic. I design and ship production systems built around Claude: agents, RAG pipelines, and automations that actually make it to deployment.
Over the past 7 years I've helped more than 20 companies put AI into production across the US, Europe, and the Middle East. I've led engineering teams at startups large and small, and I bring a consistent track record as a high performer on the work I take on.
I post regularly on Medium, X, and YouTube on the latest in AI, ML, and tech, which keeps me on top of how fast the field moves, with an audience of over 10,000 across platforms. I share this work publicly partly because teaching a thing is the best test of whether you understand it.
What I build
- RAG chatbots and agents over your documents, PDFs, Notion, and knowledge bases
- LLM fine-tuning on your domain data
- Workflow automations that replace 40 to 80% of manual operations
- Solution architecture, so you commit to the right stack the first time
- Recovery work on stalled or underperforming AI projects
Proof on Upwork
Verified reviews and track record from real clients, on Upwork:
100%
Job Success
$10K+
Earned
8
Jobs
240
Hours
5.0
Rating
“Amazing service, very detail oriented, highly collaborative and super fast. Will highly recommend Sebastian!”
“Sebastian was easy to work with, communicated clearly, and picked up the project requirements quickly. He was dependable, worked efficiently, and delivered strong work for our AI language learning project.”
“Sebastian performed at a high level and achieved the project on time and with great results.”
Experience & certifications
7+ years putting AI into production for 20+ companies across the US, Europe and the Middle East.
Engineering Team Lead · AI Tech Solutions
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Certifications
10verified certifications, including Anthropic's Claude Certified Architect and DeepLearning.AI specializations.
›Inspect all 10 certifications, with links
- Claude Certified Architect Anthropic · 2026
- NLP with Classification & Vector Spaces DeepLearning.AI · 2026
- AI for Medical Diagnosis DeepLearning.AI · 2026
- Machine Learning Engineer DataCamp · 2025
- Developing Large Language Models DataCamp · 2024
- LLM Engineering: Master AI & Large Language Models Udemy · 2024
- Foundations of Project Management Google · 2022
- Project Planning: Putting It All Together Google · 2022
- Project Execution: Running the Project Google · 2022
- Capstone: Applying Project Management in the Real World Google · 2022
Education
- PhD in AI (Computer Engineering & Mathematics)Universitat Rovira i Virgili · 2024 to 2028
- MSc, Computer Security Engineering & Artificial IntelligenceUniversitat Rovira i Virgili
- MBA, Business Administration & ManagementBabeș-Bolyai University · 2023 to 2025
- BEng, Automation & Computer ScienceTechnical University of Cluj-Napoca · 2018 to 2022
Open source
Open-source toolkit for responsible AI: CLI + SDK to scan code, collect evidence, and generate model cards, risk files and evals.
JavaScriptHands-on course building an agentic AI learning assistant with LangChain, LangGraph and modern RAG.
PythonProduction-style async FastAPI NLP service: transformer sentiment, spaCy NER, rate limiting and persistence.
PythonStart a project
Send over the project and I'll reply the same day with a plan, a clarifying question, or an honest pass.
Or reach me directly