Sergiu Traian Nicoara

AI Specialist at Independent Developer

Independent AI projects including Generative AI chatbots (Character AI, Gradio-based interactive chatbots), fine-tuning Llama, image-based calorie tracking, customized chatbots with retrieval-augmented generation (RAG), and Q&A/document-based chatbots. Built agentic AI tools (AutoGen, LangGraph, CrewAI), implemented sentiment analysis, explored deep learning architectures (ANNs, CNNs), and developed various regression/classification models. Optimized models with XGBoost and CatBoost, performed K-fold cross-validation and grid search, and experimented with no-code/low-code ML platforms (Vertex AI, DataRobot).

AI Specialist at Independent Developer

Led independent AI projects across generative AI, agentic AI, and NLP. Built character-based chatbots and Gradio interfaces; fine-tuned Llama models; created RAG-enabled Q&A document bots and calorie-tracking from images. Implemented sentiment analysis, CNN/NN classifiers, and regression/classification models. Evaluated and deployed models using XGBoost, CatBoost, and SageMaker; explored no-code ML workflows with Vertex AI and DataRobot. Developed end-to-end AI solutions with a focus on scalability and practical impact.

Education Coordinator (Homeschooling Teacher) at Self-employed

Planned curricula and educational programs; delivered direct instruction; conducted student assessments, progress tracking, and life skills integration; managed comprehensive record-keeping and regulatory compliance.

Software Engineer at Alcatel Lucent Romania

Developed scalable telecommunications solutions with systems integration and performance optimization; contributed to international projects delivering services to millions of users; worked on mobile TV platforms and related telecom infrastructure initiatives.

AI Specialist at Independent Developer

Independent AI Specialist focusing on end-to-end AI projects: generative AI, agentic AI, NLP and DL applications, model development, evaluation and deployment on AWS SageMaker and other frameworks. Experience includes fine-tuning LLaMA, RAG-based Q&A, sentiment analysis, neural networks, CNNs, regression/classification algorithms, clustering, dimensionality reduction, reinforcement learning (Thompson sampling, UCB), and model optimization (XGBoost, CatBoost) with no-code ML tooling.

Homeschooling Teacher / Education Coordinator at Self-employed

Full-time Education Coordinator responsible for curriculum planning, direct instruction, personalized teaching methods, student assessment, progress tracking, social development activities, and regulatory compliance.