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

  • 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

Frontend

Backend

Data

DevOps & Tools