Florencia Sombra
@florenciasombra
Mainframe developer modernizing COBOL systems, building reliable IBM Z apps, and integrating with Java/Python services.
ArgentinaWhat I'm looking for
I’m a recent Systems Programming graduate with hands-on experience developing IBM Mainframe applications using COBOL Batch, JCL, CICS, Db2, and VSAM in IBM Z/LinuxONE environments. I focus on analysis, development, application testing, and legacy system modernization with careful attention to detail.
In my Professional Supervised Internship (National University of Villa Mercedes), I designed, developed, and tested IBM Mainframe applications using COBOL Batch, VSAM, and IBM Db2 to support reliable enterprise data processing and integration. I executed and validated applications on IBM LinuxONE Community Cloud, strengthening my hands-on experience with IBM Z environments and testing.
I also build modernization prototypes and integrations through personal projects. For Insurance Fraud Audit Modernization, I designed a COBOL Batch + Spring Boot prototype to connect Mainframe processes with REST services, and I developed a Spring Boot REST API to automate claims analysis. In an Electoral Registry System project, I developed a Java desktop application with MySQL persistence for authentication, voter validation, and automated statistics generation.
Experience
Work history, roles, and key accomplishments
Insurance Fraud Audit Modernization
Personal Project
May 2026 - Present (2 months)
Built a modernization prototype to integrate COBOL Batch processes with Spring Boot REST services. Developed a Spring Boot REST API to automate claims analysis and enable data exchange between legacy and modern systems.
Professional Supervised Internship
National University of Villa Mercedes
Mar 2025 - Mar 2026 (1 year)
Designed, developed, and tested IBM Mainframe applications using COBOL Batch, VSAM, and Db2. Executed and validated applications on IBM LinuxONE Community Cloud to strengthen hands-on IBM Z application testing experience.
Electoral Registry System
National University of Villa Mercedes
Aug 2025 - Nov 2025 (3 months)
Developed a Java desktop application with MySQL persistence including user authentication, voter validation, and automated voting statistics generation.
Education
Degrees, certifications, and relevant coursework
Universidad Nacional de Villa Mercedes
Programadora Universitaria de Sistemas, Systems
2023 - 2026
Completed the Programadora Universitaria de Sistemas program at Universidad Nacional de Villa Mercedes (2023–2026).
International Business Machines (IBM)
Modernize Applications with IBM CICS, Mainframe (IBM CICS)
Completed a certificate on modernizing applications with IBM CICS.
EF SET
EF SET English Certificate (C1 Advanced), English
Achieved the EF SET English Certificate (C1 Advanced).
Coursera
IBM Mainframe Developer Professional Certificate, Mainframe Development
Completed the IBM Mainframe Developer Professional Certificate.
International Business Machines (IBM)
IBM Z Explore - All Challenges Completed, IBM Z
Completed IBM Z Explore with all challenges.
Availability
Location
ArgentinaAuthorized to work in
Job categories
Skills
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