Lucas R.

I build fast, reliable web applications, automated data pipelines, and AI systems that solve real business problems. Whether you need a high-performance full-stack web application, an automated data extraction and OCR workflow, or rigorous AI model evaluation, I engineer clean, production-ready code with end-to-end ownership. What I bring to your project: - Full-Stack Web Development: Next.js (App Router), React 18/19, TypeScript, Tailwind CSS, FastAPI, Node.js, Java and Spring Boot. - Data Engines & Automation: DuckDB (OLAP sub-5ms queries), PostgreSQL, MySQL, document OCR pipelines (Docling, Tesseract), and custom API integrations. - AI & LLM Engineering: Frontier model evaluation, RLHF alignment, prompt architecture, and adversarial red-teaming (experience with JoinStellar, Outlier, and DataAnnotation). - Clean Architecture: Modular design, automated test suites (Pytest, Jest), and responsive UI tailored for both web and mobile. Key Highlights: - Engineered an enterprise Business Intelligence & OLAP research platform indexing 1.8M+ commercial entities with sub-5ms latency for a microfinance institution (Vitas Romania). - Built deep learning vision systems including a 26-class font recognition classifier (EfficientNet-B0, 96.5% top-3 accuracy). - Cambridge C2 Native English proficiency (Score 201) ensuring seamless, crystal-clear communication. Have a project in mind or need an autonomous developer to ship your backlog? Send a message and let's discuss how to make it happen.