Jesse Contreras

I’m a Senior Software Engineer with 7+ years of experience building full stack SaaS products from the ground up and making them reliable in production. I’m especially strong in TypeScript and JavaScript, with hands-on work across Node.js, React, Next.js, NestJS, MongoDB, and PostgreSQL.

At Chezie, I architected and scaled backend systems using NestJS, MongoDB, Nginx, Kubernetes, and DigitalOcean to support zero-downtime deployments. I built GraphQL and REST APIs, designed integration workflows (including Zoom and Google Calendar), and implemented authentication and enterprise identity features spanning OAuth, SSO, SAML, and SCIM—while partnering on SOC 2 Type II and GDPR aligned security controls.

I also build AI powered applications, including RAG, vector search, embeddings, and local LLM workflows (with contextual retrieval and citation-aware responses). From leading multi-tenant SaaS architecture at Leaderful to delivering operational automation with role-based access controls in contract work, I bring a product-minded approach, strong engineering controls, and a mentoring focus on testing standards and operational visibility.