Hector Olea - Full-Stack Developer

Hector Olea

Full-Stack Developer

Full-Stack Developer with 12 years of experience designing, modernizing, and scaling enterprise applications. Specialized in Java, Spring Boot, and microservices, with strong focus on clean architecture, automated testing, and event-driven systems using Kafka. I build reliable, maintainable software through solid engineering practices and modern DevOps workflows.

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Work experience

Full-Stack Developer

Tata Consulting Services

Current

  • Strengthening backend architecture and microservices design as part of a strategic engineering team. Expanding expertise in scalable Java systems, cloud-native patterns, and event-driven architectures.

Full-Stack Developer

Capgemini (at MetLife)

  • Enhanced an insurance platform built with Angular and Java microservices, refactoring 30% of the codebase to align with Spring Boot best practices.
  • Implemented JUnit/Mockito testing, raising test coverage from 0% to 20% and improving system reliability.

Software Engineer

IBM (at Dun & Bradstreet)

  • Ensured stability and performance of a financial analytics application by resolving incidents and optimizing workflows.
  • Improved response times through efficient incident management using ServiceNow.

Full-Stack Developer

IBM (at Discovey)

  • Developed and enhanced microservices for a banking platform, integrating customer data via SSN and expanding case and product management capabilities.
  • Added initial automated tests to legacy services, increasing maintainability.

Full-Stack Developer

Softtek (at Walmart)

  • Developed and maintained more than 15 microservices using Spring Boot and Node.js in a high-scale retail environment.
  • Automated support tasks with Bash and Python, improving operational efficiency.
  • Migrated services to Walmart’s Cloud Native platform and Kafka, improving scalability and reducing deployment complexity.
  • Modernized Spring Boot applications, Docker images, and project dependencies, improving security and stability.

Site Reliability Engineer

Softtek (at Southwest Airlines)

  • Automated operational workflows for the airline, reducing manual effort and improving efficiency.
  • Built monitoring and incident-handling automations with Python/Bash and REST APIs integrated with ServiceNow.

Java Web Developer

Softtek (at General Electric)

  • Maintained an invoicing system that processed transactions from FTP text files, ensuring reliable data integration.
  • Improved Oracle performance through SQL/PLSQL tuning and automated bulk data loading.

Java Web Developer

INEGI

  • Maintained and supported the SIMBAD census database system, ensuring data accuracy and stable performance.

Tech stack

Languages

Java JavaScript Python TypeScript

Frontend

React Angular Tailwind CSS Bootstrap Redux

Backend

Spring Boot Node.js Spring Cloud

Data

PostgreSQL MongoDB Kafka GraphQL Oracle

DevOps & Tools

AWS Git Docker Kubernetes Terraform Jenkins Maven Gradle