Calvin Oswin Crasto

I am a full-stack developer with experience building responsive, accessible web applications using Angular, React, and TypeScript. I have delivered production features end-to-end, integrating Node.js backends, REST and GraphQL-style data access, and ensuring cross-browser and WCAG-compliant UIs.

I have worked in agile teams across startups and consulting roles, managing CI/CD workflows (Jenkins, npm/Yarn), Git-based releases, and automated testing strategies including Playwright/Cypress approaches. I also have experience preparing services for cloud deployment and performance-minded hosting.

My projects include a cross-platform Electron productivity app with Sequelize/SQLite and Supabase sync, an NLP/ RAG-based PII extraction pipeline achieving high precision/recall/F1, and a GenAI-powered grocery price normalization pipeline improving product-matching accuracy dramatically. I’ve led technical designs, model validation, and scalability efforts.

I hold graduate certificates in Project Management and in Artificial Intelligence and Software Engineering, plus a Bachelor’s in Computer Engineering. I focus on building maintainable, testable systems and enjoy applying automation, performance monitoring, and best practices to deliver reliable user experiences.