Senior Software Developer, Microsoft MVP (2024–Present)
Barcelona, [email protected]
- https://www.linkedin.com/in/carlos-rafael-ramirez/
- https://github.com/crramirez
- https://crramirez.github.io/My-Resume
- https://stackoverflow.com/users/2210035
- https://twitter.com/crramirezc
- MVP Profile Page
Senior Software Developer and Microsoft MVP with 24+ years of experience enhancing performance, reliability, and scalability in complex systems. Specialized in Java, AWS, and data engineering. Skilled in modernizing legacy systems and optimizing large-scale infrastructure.
Election Systems Modernization & Backend Development
- Enhanced system security by upgrading from Java 8 to Java 17, addressing ~300 CVEs and removing critical vulnerabilities, boosting performance by 20%.
- Developed backend for adjudicating 2,556 candidates in Honduras' primary election using Oracle stored procedures and BIRT reports.
- Led a team of 5 developers to adapt the electoral solution for Malawi elections within 5 months, ensuring compliance with local laws and creating 20+ statistical reports.
Tech Stack: Java, Spring Boot, Docker, Jenkins, Oracle, AWS, BIRT
Data Infrastructure & Cloud Systems
- Maintain and optimize Java-based microservices deployed on Kubernetes in AWS (EKS), integrating with GCP services such as BigQuery for large-scale data pipelines.
- Manage AWS (SQS, Kinesis, DynamoDB) with Hystrix-based flow control to ensure scalability and reliability, enabling cross-cloud data workflows with GCP BigQuery.
- Enhanced Datadog observability by instrumenting code with custom metrics and configuring dashboards and alerts, improving monitoring coverage and incident response.
Tech Stack: Java, Kubernetes (EKS), Docker, AWS (SQS, Kinesis, DynamoDB), GCP (BigQuery), Hystrix, Datadog
Customer Segmentation & Data Analytics
- Enhanced A/B Testing framework used for customer segmentation driving 40% of company revenue.
- Improved BigQuery performance by 60% via Farm Fingerprint algorithm.
- Migrated Python salt generation system into Java to reduce pre-test imbalance.
Tech Stack: Java, Kubernetes, Docker, GCP (BigQuery), MySQL, Jenkins, Linux, Agile, TDD
Legacy System Modernization & Platform Migration
- Took ownership of an acquired legacy system, modernized stack, and reduced server rental costs by €3K/month.
- Led recovery after data center fire with no data loss and minimal downtime.
- Drove customer migration to new platform, achieving 90% adoption.
Tech Stack: Java, Spring Boot, Java EE, JBoss, Hibernate, Docker, Oracle, MySQL, React Native, Appium
Cloud Cost Optimization & Election Infrastructure
- Migrated from Oracle JDK to OpenJDK OpenJ9, saving >$10K in licensing and 30% in cloud costs.
- Integrated Java EE authentication with central government OAuth system.
- Built OpenCV + Java solution reducing vote transcription costs by $20K.
- Designed Spring Boot + Terraform cloud stack manager reducing environment setup time by half.
- Deployed private cloud on OpenStack saving $5K/month.
- Established annual training plan for 30 engineers, improving productivity by 20%.
Tech Stack: Java, Spring Boot, Java EE, Docker, Terraform, AWS (CloudHSM), OpenStack, PostgreSQL, Oracle, OpenCV
Biometric Voter Authentication & Mission-Critical Services
- Led team adapting biometric voter authentication for Armenian government (5M voters).
- Optimized Pentaho Kettle pipeline reducing import time of voter data to <1 hour.
- Oversaw mission-critical Java EE/JMS web service handling 270K voting packages in <60 minutes.
- Pioneered Scrum adoption, boosting productivity by 50% and reducing defects by 30%.
- Led development of Ballot Design system generating 1.7K ballot faces and 80M serialized PDFs.
- Automated application deployment with Docker cutting setup time by 80%.
Tech Stack: Java, Java EE, JMS, JBoss, Hibernate, Docker, PostgreSQL, Oracle, Jenkins, Maven, Sonar, Pentaho Kettle
Automation & Distributed Election Systems
- Automated OS image builds with FAI ensuring full auditability and reducing certification costs.
- Led team optimizing distributed electoral solution in the Philippines, cutting field technicians by 50%.
Tech Stack: Java, Java EE, Linux, JBPM, FAI
Call Center & Voting Support Systems
- Designed and led call center support system for 900+ operators and 5K voting centers using JBPM.
Tech Stack: Java, Java EE, JBoss, Hibernate, Oracle, JBPM
Electoral Management Systems
- Developed Electoral Management System supporting 30K voting machines and 11M voters.
Tech Stack: Java, Java EE, JMS, Hibernate, Oracle
- Microsoft MVP (2024–Present).
- Maintainer of Pengwin (Debian-based WSL distro) and Fedora Remix for WSL.
- Contributed to Wine, JetBrains, Oracle, and Microsoft projects.
- Built startup for virtual worlds using Java + Oculus Rift, and e-commerce site with Drupal.
- Active Stack Overflow user with 8.2K reputation, top 5% in Docker.
- Published Dockerized Lime Survey with >100K downloads.
- Languages: Spanish (native), English (professional, IELTS B2), French (intermediate, DELF B1).
- Bachelor of Systems Engineering, Universidad Metropolitana, Caracas — Oct 1993–Aug 1999
- Sun Certified Java Programmer — May 2002
- Sun Certified Web Component Developer — Jul 2003
- Sun Certified Mobile Application Developer — Feb 2004