# Miguel Esparza > US Citizen - React, TypeScript, Node.js, NestJS backend server, Postgres, TypeORM, LangGraph, OpenAI, Vector Databases (e.g. Pinecone, Supabase), REST and GraphQL APIs, AI agent orchestration. Location: Edinburg, Texas, United States Profile: https://flows.cv/miguelesparza I specialize in turning outdated systems into modern, AI-powered platforms that actually scale. At PilotWizard, I led a complete rebuild from a monolithic app to an intelligent automation platform. I designed the architecture from scratch, built LangGraph AI agents that automated entire user flows, and integrated OpenAI, Stripe, and multiple CRM systems into a modular NestJS backend that could scale with the business. My approach is simple: understand the business goals first, then build technology that serves those goals. The difference? I don't just design architecture or write proposals. I build it, test it in production, and optimize it until it performs exactly how it needs to. That's what I'll bring to your company: focused execution that moves you ahead of the competition. ## Work Experience ### Senior Software Engineer @ PilotWizard.ai Jan 2023 – Present | Remote - Developed complete frontend application using Flowbite react component framework powered by Tailwindcss - Generated onboarding and discovery wizards to obtain important data from users while registering. - Implemented Authentication and Authorization with NextAuth.js - Created pages and components for entire frontend - Implement Stripe Payment Gateway for subscription checkout - Nestjs backend server with REST API’s. - Handles authentication and authorization, CRM, Organization and User backend features. - TypeORM entities with a Postgres database. - Implemented OpenAI to automate email campaign development. - Implemented mail system with Mailer and HBS handlebars. Utilized Sendgrid. - Implemented Stripe checkout logic and web hook logic. - Implemented CloudFlare for CDN and cyber security ### Senior Software Engineer @ Revive Jan 2023 – Jan 2024 | Boston, Massachusetts, United States Senior Software Engineer – Revive Health Inc - Led the development and modernization of front-end components using Vue.js, including migrating legacy codebases to the latest version of Vue. - Maintained and extended back-end services built with C#, ensuring optimal performance, security, and scalability. - Managed and optimized the MySQL database, implementing best practices for secure data handling and compliance. - Ensured all code and infrastructure handling patient data and medication records complied with HIPAA standards. - Implemented and supported white-labeled organizational features, enabling platform customization per healthcare partner. - Contributed to the architecture and rollout of feature flag systems for safe and controlled feature deployments. Collaborated on CI/CD pipelines using Jenkins, aiding in automated testing, builds, and secure deployment processes. - Worked cross-functionally with product and compliance teams to deliver critical features involving drug memberships, patient workflows, and organizational permissions. ### Senior Software Engineer @ OneRail Jan 2022 – Jan 2023 | Orlando, Florida, United States Technologies: React, TypeScript, Node, MySQL DB, Jest & Cypress Unit Tests, Launch Darkly Flags, and Azure Server - Generated responsive user interfaces utilizing React, enhancing the user experience through user feedback surveys. - Integrated mapping functionalities, including real-time tracking and logistics, by interfacing with various Mapping APIs including Google Maps API. - Developed backend features in Node, using TypeScript for type-safe code and maintainable architecture. - Worked with a MySQL database - Implemented microservices, each serving distinct business logic and functionalities. - Developed RESTful APIs, and utilized features such as Authentication Guards and Rate Limiters to uphold security standards. - Implemented feature management using Launch Darkly, enabling controlled and phased feature rollouts to minimize risk. - Managed application operations on Azure Server ### Senior Software Engineer @ Health IQ Jan 2020 – Jan 2022 | San Francisco, California, United States Technologies: React, TypeScript, Node, Nest.js, RESTful APIs, GraphQL APIs, TypeORM, Postgres DB, Jest Unit Tests, AWS Server -Developed frontend component with react and worked on bugs via Jira. - Developed Node backend server with Express - Worked on the development of GraphQL and REST APIs, streamlining data exchange and business logic execution. - Managed a Postgres database ecosystem, using TypeORM for object-relational mapping, improving data integrity and security. - Oversaw version control and code integration processes via GitHub, ensuring code quality and facilitating continuous integration and deployment. - Utilized AWS for hosting and scaling services, focusing on application performance and ensuring service continuity. ### Senior Software Engineer @ TimiCoin/TimiHealth Jan 2016 – Jan 2020 | Austin, Texas Area Technologies: React, Node, RESTful APIs, TypeORM, MySQL DB, Jest Unit Tests, AWS Server - Generated secure user interfaces leveraging React.js, enhancing the user experience while maintaining data privacy. - Enhanced application security and performance by integrating server-side rendering with React, providing a defense against potential data breaches. - Implemented React patterns and hooks to manage application state and user interactions, ensuring smooth, real-time user experiences without compromising data security. - Developed and maintained a high-availability Node.js backend, ensuring seamless data processing and integration. - Managed SQL database schemas and queries, optimizing for performance and secure data storage. - Ensured the integrity and privacy of sensitive healthcare data through security protocols. ### Full Stack Engineer @ MyDoctorsChat Jan 2014 – Jan 2016 | Austin, Texas, United States Technologies: HTML, CSS, jQuery, JavaScript, Node, RESTful APIs, TypeORM, MySQL DB, AWS Server - Created secure and intuitive user interfaces, ensuring compliance with HIPAA privacy regulations. - Generated interactive features that enriched the telemedicine experience, improving patient engagement and satisfaction. - Maintained and enhanced the codebase, incorporating cutting-edge web technologies to keep the application at the forefront of telehealth. - Worked with backend teams to integrate Node.js services, facilitating real-time, scalable communication between patients and healthcare providers. - Administered SQL databases, ensuring the integrity, security, and availability of sensitive healthcare data. - Contributed to the development of RESTful APIs, allowing for efficient data exchange and system interoperability in a secure healthcare environment. ## Education ### Postgraduate Degree in Artificial Intelligence and Machine Learning The University of Texas at Austin Jan 2022 – Jan 2023 ### Bachelor's degree The University of Texas at Austin Jan 2005 – Jan 2009 ## Contact & Social - LinkedIn: https://linkedin.com/in/miguel-esparza-engineer --- Source: https://flows.cv/miguelesparza JSON Resume: https://flows.cv/miguelesparza/resume.json Last updated: 2026-03-22