Hey there, I'm Nemanja Vujić
I'm a Data Scientist & AI Engineer from Pančevo, Serbia – currently working on advanced AI projects at Vega IT in Belgrade. I specialize in building smart, scalable, and production-ready AI systems that solve real-world problems using Large Language Models (LLMs), Generative AI, and RAG (Retrieval-Augmented Generation) systems.
About My Work
I'm obsessed with AI research, especially the latest in LLMs, generative models, and prompt engineering. My journey into AI started with annotating LLM outputs and evolved into developing full-scale ML pipelines, model evaluations, and RAG architectures. I help companies implement ChatGPT-like systems, AI chatbots, and intelligent document processing using cutting-edge natural language processing techniques.
AI Research
Deep dive into LLMs, generative models, and cutting-edge AI technologies.
ML Engineering
Building scalable ML pipelines and production-ready AI systems.
Prompt Engineering
Crafting effective prompts and optimizing AI model interactions.
Technical Skills
My main language is Python for AI and Machine Learning. I use libraries like LangChain, LangGraph, PyTorch, Pandas, NumPy, and more. I've worked with vector databases like FAISS and Milvus to create semantic search engines and RAG pipelines. I'm also confident in model monitoring with MLflow and Weights & Biases, including A/B testing setups for production ML models. I specialize in fine-tuning language models, prompt optimization, and AI system architecture.
Cloud Experience
My cloud AI experience spans across:
- Azure: OpenAI GPT-4, AI Studio, Cognitive Services, AI Foundry
- GCP: Vertex AI, Natural Language AI, PaLM API
- AWS: Bedrock, Comprehend, Personalize, SageMaker
I frequently use Docker for containerization and deployment of machine learning applications across these platforms. I build enterprise AI solutions, conversational AI systems, and intelligent automation tools.
Mentoring & Education
Beyond engineering, I'm passionate about mentoring and education. I guide junior data scientists at Vega IT and have developed AI learning labs for high school students. These programs teach young minds how to leverage AI tools for learning and problem-solving, helping bridge the gap between traditional education and modern AI capabilities. I believe in empowering the next generation with practical AI skills and responsible AI development.
Fun Fact
I used to compete in powerlifting and placed 4th nationally in Serbia's Junior -105kg category. These days, I lift models more than weights – but I still chase progress every day. This discipline from competitive sports translates into my systematic approach to AI model optimization and performance tuning.