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Diego Aragón Duarte

@diegoaragnduarte

Senior fullstack developer at Softtek building enterprise web applications and AI agents with React, Node.js, and LangGraph.

Mexico

Message

At Softtek, I contribute to enterprise web applications and an internal AI platform for a major client. I develop frontend solutions with Next.js, React, and TypeScript, and build backend services and APIs with NestJS, GraphQL, and Python.

I also contribute to AI workflows using LangGraph, including agent orchestration, model routing, and connections to internal services. My work spans frontend, backend, API, and AI integration layers.

At Brillio, I designed and delivered fullstack applications for enterprise banking platforms using React, Node.js, and TypeScript. I improved backend performance by 35% through PostgreSQL query optimization, refactoring, and data modeling.

At Multiplica, I developed mobile solutions with React Native and Node.js, and led feature development. Earlier, at G-Tech (Guadiana Tecnología), I built web frontend features and hybrid and native mobile applications using React, Vue.js, Flutter, and Swift.

Experience

Work history, roles, and key accomplishments

Current

Senior Fullstack Developer

Current

Softtek

Mar 2026 - Present (7 months)

Contributes as a Senior Full-Stack Developer to the design, development, and continuous improvement of enterprise-grade web applications for a major client. Develops scalable frontend solutions using Next.js, React, and TypeScript, and builds robust backend services with NestJS, GraphQL, and service-oriented patterns.

Next.js React TypeScript NestJS GraphQL Python LangGraph AI Agents AWS Agile Code Review

Senior Fullstack Developer

Brillio

Jun 2022 - Mar 2026 (3 years 9 months)

Designed and delivered fullstack applications using React.js and Node.js with TypeScript for enterprise banking platforms. Improved backend performance by 35% through PostgreSQL query optimization and integrated AWS cloud services for scalable systems.

React NodeJS TypeScript PostgreSQL AWS Lambda EC2 DynamoDB Amazon SQS Cloudwatch REST APIs Microservices CI CD Java Maven Kafka Apigee

Mobile Developer

Multiplica

Jul 2021 - Jun 2022 (11 months)

Developed end-to-end mobile solutions using React Native with Node.js backend services. Designed and implemented REST APIs that reduced response times by 20% and integrated Firebase services for real-time features.

React Native NodeJS REST APIs Firebase Authentication Firestore Cloud Storage CI CD iOS Android

Front End Developer

G-Tech (Guadiana Tecnología)

Sep 2018 - Jul 2021 (2 years 10 months)

Developed web frontend features using React.js and Vue.js, and built hybrid and native mobile applications using Flutter and Swift. Reused shared components to reduce development time by 30% and integrated AWS and GCP cloud services.