Hi! I'm Jose Aburto

Backend Developer with 6+ years of experience designing and implementing scalable systems using Node.js and TypeScript. Specialized in secure REST APIs, microservices architecture, JWT/OAuth2 authentication, and Kubernetes deployments. Proven track record leading critical production platforms serving 40,000+ active users and processing hundreds of daily transactions. Proficient in SQL/NoSQL databases, automated testing, API documentation (Swagger), CI/CD, and system monitoring with Kibana. Recognized for delivering robust, scalable, and maintainable backend solutions.

• Linkedin: https://www.linkedin.com/in/levyaburto/
• Email: [email protected]

Co-founded and led the technical development of Nicagestor, an HR SaaS platform for SMEs. Designed and implemented the platform’s architecture, core features, and integrations, enabling payroll management, time tracking, absence management, and digital document signing.

Key Achievements:

• Architected the platform using NestJS and Next.js, ensuring scalability and maintainability.
• Integrated Stripe for secure payment processing and Clerk for user authentication.
• Automated email marketing workflows with SendGrid.
• Added advanced integrations with Google Calendar and external APIs.
• Optimized cloud deployments for performance and cost efficiency.

Technologies: NestJS, Next.js, PostgreSQL, Railway, Stripe, Clerk, SendGrid, Redis, OpenAI, Hugging Face

Designed, implemented, and maintained secure APIs, microservices, and internal systems. Led integrations with biometric devices and automated banking processes while ensuring high availability and scalability of systems deployed in Kubernetes and Docker environments.

Key Projects:

1. HR Platform

   • Developed secure APIs in NestJS with JWT authentication.
   • Integrated biometric devices (Anviz) and electronic signature workflows.
   • Implemented Docker-based CI/CD pipelines and deployed to Kubernetes clusters.
     Technologies: NestJS, Node.js, Docker, Kubernetes, PostgreSQL, Redis, Swagger, Tailwind

2. My Delinternet Club (40K+ active users)

   • Built a modular backend to handle online payments and real-time notifications.
   • Integrated Redis for caching and MySQL for transaction management.
   • Implemented logging with Logstash and monitoring with Kibana.
     Technologies: NestJS, Redis, MySQL, Logstash, Kibana, Swagger, TDD

3. Customer Support Virtual Assistant

   • Designed and delivered a custom multi-channel support platform integrating WhatsApp Cloud, back-office management, and OpenAI.
   • Reduced monthly SaaS costs by 93% through in-house development.
   • Fine-tuned AI models for domain-specific responses.
     Technologies: NestJS, MongoDB, OpenAI, Docker, Kubernetes, React.js, Cloudflare, ClamAV, WAF, WhatsApp Cloud

4. Project Management System

   • Led a cross-functional team to automate internal workflows, integrating new software with existing company systems.
     Technologies: NestJS, MongoDB, Docker, Kubernetes, React.js

5. Time Tracking System

   • Designed and implemented a modular backend for tracking employee hours and integrating payroll automation.
     Technologies: NestJS, MongoDB, Docker, Kubernetes, React.js

6. Inventory System

   • Built an internal inventory management tool integrated with existing CRM and billing systems.
     Technologies: NestJS, MongoDB, Docker, Kubernetes, React.js

7. React Component Libraries

   • Developed reusable UI component libraries with Storybook to standardize frontend development.
     Technologies: React.js, Tailwind CSS, Storybook

Developed user interfaces for Electronic Health Records (EHR) and Patient Management Systems (PMS). Integrated frontend components with backend APIs to manage patient data, appointments, and user authentication.

Key Achievements:

• Built responsive HTML/CSS/JavaScript interfaces optimized for usability.
• Collaborated with backend teams to ensure seamless data integration.
• Conducted QA and functional validation for clinical systems.

Technologies: HTML, CSS, JavaScript, Spring MVC

SaaS HR platform for SMEs with payroll management, time tracking, absence management, INSS reporting, and Google Calendar integration.

• Company: Nicagestor
• URL: https://www.nicagestor.com (private GitLab repository)
• Technologies: NestJS, Next.js, PostgreSQL, Railway, Stripe, Clerk, SendGrid

Backend platform serving 40K+ active users, managing online payments and notifications.

• Company: Delinternet
• Technologies: NestJS, Redis, MySQL, Logstash, Kibana, Swagger, TDD

Custom-built virtual assistant integrating WhatsApp Cloud, OpenAI, and back-office systems, reducing SaaS costs by 93%.

• Company: Delinternet
• Technologies: NestJS, MongoDB, OpenAI, Docker, Kubernetes, React.js, Cloudflare, ClamAV, WAF, WhatsApp Cloud

Automated internal processes for field teams, integrating with the existing internal suite.

• Company: Delinternet
• Technologies: NestJS, MongoDB, Docker, Kubernetes, React.js

Backend platform for tracking employee work hours and integrating with payroll.

• Company: Delinternet
• Technologies: NestJS, MongoDB, Docker, Kubernetes, React.js

Internal tool for managing stock and purchase orders, integrated with CRM and billing modules.

• Company: Delinternet
• Technologies: NestJS, MongoDB, Docker, Kubernetes, React.js

Reusable UI component libraries built to streamline development across multiple frontend projects.

• Company: Delinternet
• Technologies: React.js, Tailwind CSS, Storybook

• Backend: NestJS, Node.js, ExpressJS, TypeScript, JavaScript, Python, FastAPI
• Frontend: React, Tailwind CSS, HTML, CSS, Next.js
• Databases: PostgreSQL, MySQL, Redis, SQL, NoSQL, ChromaDB
• Cloud & DevOps: Docker, Kubernetes, MinIO, MQTT, CI/CD, AWS
• Testing & QA: TDD, Swagger, Automated Testing, Logstash, Kibana
• Architecture & Methodologies: Microservices, Domain-Driven Design, Clean Architecture, Agile (SCRUM, Kanban)
• Languages: Spanish (Native), English (Fluent)