Full-Stack Engineer with 15+ years architecting and scaling multi-tenant SaaS platforms across fintech, insurance, HR-tech, and manufacturing verticals. Deep specialization in TypeScript, Node.js/NestJS, and Nx monorepo architectures, with a consistent record of cutting latency, hardening security, and leading legacy-to-TypeScript migrations at enterprise scale. Extends core full-stack engineering with production-grade AI agent orchestration (LangChain, LangGraph), building automation into the product itself rather than bolting it on as a side feature.
- Core Languages: TypeScript, JavaScript (ES6+), HTML5, CSS3, SCSS
- Backend & Architecture: Node.js (NestJS, Hono, Express), Nx Monorepos, GraphQL, REST, Event-Driven Systems (Kafka, RabbitMQ), ORM/ODM (TypeORM, Drizzle, Mongoose)
- Frontend: Next.js, React (Redux, Zustand), Angular (NgRx, RxJS), Nuxt.js, Vue (Pinia), Tailwind CSS, Shadcn/UI
- AI & Agentic Workflows: LangChain, LangGraph
- Data & Storage: PostgreSQL, MySQL, MongoDB, DynamoDB, Redis
- Cloud & DevOps: AWS, Google Cloud, Azure, Docker, CI/CD (GitHub Actions, CircleCI)
- Testing: Jest, Vitest, Cypress, Playwright
- Building a multi-tenant platform with Next.js, NestJS, and Supabase
- Architecting secure GraphQL APIs and AI-enabled features using LangChain
- Experimenting with monorepos, automation, and developer UX tools
- Running a remote freelance practice and contributing to open source
In my free time, I explore emerging tech (AI agents), build tools, participate in hackathons, and contribute to open-source projects.
I also enjoy reflecting on life, visiting temples, and listening to Thai music.
- BSc in Mathematics and Computation
University Silverio Blanco Núñez (Cuba)
- Arc.dev: @yosvelquintero
- LinkedIn: yosvelquintero
- StackOverflow: Yosvel Quintero
- Twitter/X: @yosvelquintero