Jose Miguel Navarro

As a Senior Software Engineer at Criptan, opens in new tab, I develop backend services with Node.js and TypeScript on an event-driven AWS serverless architecture. I define and deploy services with AWS CDK and work across Lambda, ECS, DynamoDB, queues, and event buses.

I work with both SQL and DynamoDB data models and use database events to trigger downstream workflows. I also lead greenfield backend projects and the ongoing migration of core business logic from PHP to TypeScript.

My role includes close collaboration with operations and product teams to refine requirements and ship systems that stay aligned with product and client needs.

At Plingo, opens in new tab, I helped design the architecture and backend services for the mobile application. My work covered feature planning, API design, implementation, and backend testing.

I improved performance by refactoring the existing codebase and worked with a stack built on Node.js, MongoDB, Mongoose, Redis, and Socket.io. I also configured AWS services and handled deployments with Docker, ECS, Lambda, and CodePipeline.

Beyond the backend, I maintained internal Lambda functions, contributed to the React Native mobile app, and shipped admin features in React-Admin, deployed through S3 and CloudFront.

I started at Auth0 on the Sustainment team, where I investigated issues across the codebase, identified root causes, and implemented fixes in collaboration with other engineering teams.

I also documented incident analysis and solutions for internal knowledge sharing, and regularly helped teammates triage internal requests while working in a remote-first team.

Later I joined the Protocols and Sessions core team, where I worked on authentication protocols and session management with a strong focus on cross-system architecture and reliability.

I joined as a Full Stack Engineer and was promoted to Lead Software Engineer within three months. I helped design, build, and deploy a live cryptocurrency platform that included both an exchange and a trading product.

My work covered APIs built with Node.js, Express, and Swagger, frontend development with React and Redux, and real-time communication through websockets.

I also managed AWS and Docker deployments and worked across PostgreSQL, Redis, MongoDB, and Socket.io to support production-grade trading infrastructure.

I led the development of a single-page application using React, Redux, and Redux-Sagas, porting an existing Django and Bootstrap product to React while following Material Design guidelines.

I worked closely with the backend team in an Agile process, and also built Android applications in React Native plus supporting web applications in React to explore future product features.

Alongside the frontend work, I developed backend services with Node.js using both REST and GraphQL approaches and handled deployment with Docker.

At bbvaapimarket.com, I worked in a Scrum team building a developer portal for managing API access. I started with Selenium tests, then moved into frontend development on AngularJS and Liferay as the product expanded.

I also built Java-based Liferay portlets and worked on Node.js tooling that transformed RAML definitions into published HTML, CSS, and JavaScript documentation.

After the beta release, the product shifted from Angular on Liferay to a SPA backed by a REST API, and I joined the backend team to build internal services with Java and Spring.

During my master's degree, I worked in a student development team using Scrum and three-week iterations to build a socially oriented MOOC learning platform.

I contributed to both design and implementation across AngularJS, Node.js, CoffeeScript, Neo4j, and MariaDB. On the backend, I built REST APIs and worked with both graph and relational data models.

The project gave me my first real-world experience on a full web product and helped me build a practical understanding of the software development lifecycle.