Available to hire
I’m Omar Rosales, a Senior Java Engineer with over 10 years of experience delivering scalable Java, Spring, and cloud-based solutions. I thrive on solving complex problems, migrating legacy systems to modern frameworks, and collaborating with cross-functional teams in Agile environments.
I’m highly motivated to learn and open to feedback, committed to continuous growth, and comfortable working independently or as part of a team. I enjoy building robust APIs, optimizing performance, and mentoring teammates to raise the team’s overall capability.
Skills
Language
English
Fluent
Spanish; Castilian
Advanced
Work Experience
Senior Software Developer at Unisys, Canada
October 1, 2018 - PresentLed the migration of a project from EJBs to the Spring Framework, incorporating REST APIs. Modernized over 70 components including applications and libraries. Refactored and improved 9 Java web services to facilitate seamless communication with legacy Oracle systems. Built pipelines using Azure DevOps.
Technical Project Manager at Experis, Peru
March 31, 2018 - August 21, 2025Reviewed and advised on the architecture of 53 projects involving Java, Oracle, Azure, Liferay, SOAP, and RESTful APIs. Liaised between Commercial and Technical Teams to lead the successful implementation of a new intranet and website for insurance brokers on a cloud platform. Designed and conducted workshops to gather, analyze, and document requirements and processes; led the implementation of the new client website on a cloud platform.
Software Developer Engineer at QTC, Peru
February 28, 2016 - August 21, 2025Developed 5 Java-based web applications using Spring MVC, Hibernate, and SOAP. Documented processes and requirements of 12 successful software implementation projects. Authored detailed technical and process documentation to support a government agency’s document system migration.
Sales Process Analyst at Aluminium Industries, Australia
March 31, 2015 - August 21, 2025Mapped and analyzed sales workflows, reducing training time by 40%. Defined and communicated technical requirements for system enhancements.
Systems Analyst at Innova, Peru
February 28, 2014 - August 21, 2025Led the implementation of 20 successful software implementations using Java, Spring Framework, and Oracle. Supported CRM analysis and enhancements, increasing reporting performance 5 times faster. Led intranet development using Liferay CMS across 4 business units. Defined and implemented business controls with stakeholders for Fines Management, decreasing IT Help Desk calls by 50%.
Systems Analyst at Inexxo, Peru
January 31, 2012 - August 21, 2025Led the development of 80 successful software implementations using Java, J2EE, Spring Framework, Hibernate, Oracle, MySQL, and MS SQL Server. Wrote and communicated technical procedures to integrate Record Management Solution with other applications, integrating 8 applications and reducing data inconsistencies by 50%. Organized stakeholder interviews to identify system and process improvements, improving IT department perception by 30%.
Software Developer Engineer at Osinergmin, Peru
November 30, 2008 - August 21, 2025Led the analysis, design, and programming of 60 web applications with technologies including Java, Spring Framework, Oracle, PostgreSQL, and MySQL. Mentored and trained 45 developers, analysts, and project managers on Java best practices.
Senior Software Developer at Unisys
October 1, 2018 - PresentLed the migration of a project from EJBs to the Spring Framework, incorporating REST APIs. Modernized over 70 components, including applications and libraries. Refactored and improved 9 Java web services for seamless communication with legacy Oracle systems. Built pipelines using Azure DevOps.
Technical Project Manager at Experis
March 1, 2018 - September 13, 2025Reviewed and advised on the architecture of 53 projects involving Java, Oracle, Azure, Liferay, SOAP, and RESTful APIs. Liaised between the Commercial and Technical Team to lead the successful implementation of the new intranet and website for insurance brokers on a cloud platform. Designed and conducted workshops to gather, analyze and document requirements and processes; eventually, led the successful implementation of the new client website on a cloud platform.
Software Developer Engineer at QTC
February 1, 2016 - September 13, 2025Developed 5 Java-based web applications using Spring MVC, Hibernate, and SOAP. Documented processes and requirements for 12 successful software implementations. Authored detailed technical/process documentation to support a government agency’s document system migration.
Sales Process Analyst at Aluminium Industries
March 1, 2015 - September 13, 2025Mapped and analyzed sales workflows, reducing training time by 40%. Defined and communicated technical requirements for system enhancements.
Systems Analyst at Innova
February 1, 2014 - September 13, 2025Led the implementation of 20 software deployments in Java, Spring Framework and Oracle. Supported CRM analysis and enhancements, increasing reporting performance 5x. Led intranet development using Liferay CMS across 4 business units. Defined and implemented business controls with stakeholders in Fines Management, reducing IT Help Desk calls by 50%.
Systems Analyst at Inexxo
January 31, 2012 - September 13, 2025Led the development of 80 software implementations using Java, J2EE, Spring Framework, Hibernate, Oracle, MySQL and MS SQL Server. Wrote and communicated a technical procedure to integrate the Record Management Solution with other applications, achieving the integration of 8 applications and reducing data inconsistency by 50%. Conducted stakeholder interviews to identify system and process improvements, improving IT perception by 30%.
Software Developer Engineer at Osinergmin
November 1, 2008 - September 13, 2025Led the analysis, design and development of 60 web applications for different departments using Java, Spring Framework, Oracle, PostgreSQL and MySQL. Mentored and trained 45 professionals on proper Java usage.
Education
Master of Engineering Management at The University of Melbourne, Australia
January 1, 2014 - December 31, 2014Bachelor of Science (Major in Information Technology Engineering) at Pontificia Universidad Católica del Perú, Perú
January 1, 1998 - December 31, 2004Master of Engineering Management at The University of Melbourne
January 1, 2014 - January 1, 2014Bachelor of Science (Major in Information Technology Engineering) at Pontificia Universidad Católica del Perú
January 1, 1998 - December 31, 2004Master of Engineering Management at The University of Melbourne
January 1, 2014 - January 1, 2014Bachelor of Science (Major in Information Technology Engineering) at Pontificia Universidad Católica del Perú
January 1, 1998 - January 1, 2004Qualifications
DevOps Foundations Certification
December 1, 2024 - August 21, 2025Microservices with Spring Cloud
November 1, 2023 - August 21, 2025Java Full Stack
August 1, 2021 - August 21, 2025Master Microservices with Spring Boot and Spring Cloud
October 1, 2020 - August 21, 2025Master Java Web Services and REST API with Spring Boot
July 1, 2018 - August 21, 2025DevOps Foundations Certification
December 1, 2024 - September 13, 2025Microservices with Spring Cloud
November 1, 2023 - September 13, 2025Java Full Stack
August 1, 2021 - September 13, 2025Master Microservices with Spring Boot and Spring Cloud
October 1, 2020 - September 13, 2025Master Java Web Services and REST API with Spring Boot
July 1, 2018 - September 13, 2025Dev Ops Foundations Certification
December 1, 2024 - September 13, 2025Microservices with Spring Cloud
November 1, 2023 - September 13, 2025Java Full Stack
August 1, 2021 - September 13, 2025Master Microservices with Spring Boot and Spring Cloud
October 1, 2020 - September 13, 2025Master Java Web Services and REST API with Spring Boot
July 1, 2018 - September 13, 2025Industry Experience
Software & Internet, Financial Services, Government, Professional Services
Skills
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