Walber Zaldivar Senior Software Developer Engineer

Senior Software Developer Engineer

BairesDev

Nov 2021

Work with US client: Customization, features implementation and bug-fixing of software related to Employment Background Screening. (Kotlin / Spring Boot, JUnit5, Mockito, Docker, GraphQL, pgSQL, TypeScript, React)

Senior Software Developer Engineer

Endava

Jan 2021 - Oct 2021 (10 months)

Jan-Feb 2021 ▪Bench: Little team project to improve Java "Spring Boot" knowledge, team leader, (Java, Docker, SonarQube) ◦Mar-Jun 2021 ▪Wok with international client: Customization, features implementation and bug-fixing of software for payment devices. Implementation of a custom ISO8583 messages parser for the QA team. (C/C++, Python) ◦Jun-Oct 2021 ▪Work with US client: Customization, features implementation and bug-fixing of software related to Health Care. (Java / Spring Boot, JUnit5, Mockito)

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Software Developer

Cameras – Core Team - Hipcam Global

Nov 2018 - Oct 2020 (2 years)

2018 – Remote, Argentina, Oct 2020 ◦I joined as a member of the "Cameras" group that is responsible of the development of firmware used by Hipcam, participating in its continuous improvement and implementation of new functionalities (Java, Kotlin, C/C ++) ◦In this time I have been immersed in the re-implementation of the remote firmware update system, resulting in a system less prone to errors and with more recovery options (Java, Kotlin, C / C ++) ◦I was on charge of the setup and maintenance of the Jenkins Server used by diferent teams to get custom builds of the firmware and prepare releases. (Jenkins, Docker)

Software Developer Engineer

Verifone

May 2018 - Nov 2018 (7 months)

Member of the "Web" group, collaborating in the development of the management system used internally by Verifone's customers (Java / JEE) ◦I participated in the development of automated tests for this management system; in addition, I prepared the images of the virtual machines used by the development group to run automated tests (Java / JEE, Docker, Selenium)

Java Software Developer

Scanntech

Aug 2014 - Apr 2018 (3 years 9 months)

Member of the iPOS Android project, point of sale with hardware and software designed by Scanntech, I worked on the improvement of the application logic, electronics payment management and the development of new device drivers. (Java) ◦Member of the Scann+ project, hardware designed by Scanntech to partner with points of sale of other companies. I was in charge of developing the parser to analyze the communication of the fiscal printers used in Brazil. As a result a generic parser was obtained, easily adaptable between printers, based on the message's structure (Java) ◦Collaborated in the development of microservices for monetary transactions with REST interfaces (Python, Django) ◦I developed the software for the MPOS PAX D200 (C / C ++

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Senior Support Technician for Servers and Networking

Infoland

Nov 2013 - Jul 2014 (9 months)

Member of the technical assistance team, which provides support to customers and members of the company, I worked in the assembly, installation and maintenance of networks, servers and personal computers.

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C++ Software Developer

Segurmática

Mar 2011 - Jun 2013 (2 years 4 months)

As a member of the Segurmatica Antivirus engine team, I was in charge of the research and development of heuristic methods for malware detection, being the first time this type of detection methods were incorporated to Segurmatica Antivirus (C ++) ◦Presentation and subsequent publication as principal author of: "Addition of Heuristics Based on the Structure of the PE Files to Segurmatica Antivirus" in XV Convention and International Computer Fair 2013 and XI Ibero-American Security Seminar in Information Technology, Havana, Cuba, March 18-22, 2013. ◦Collaborated in the development of tools for automating the processing of malware samples (C #)

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Software Developer and IT Specialist

Tourism Real State Company

Oct 2008 - Feb 2011 (2 years 5 months)

As a member of the IT team, I was responsible for the development of the software that centralizes the necessary information for decision making in the maintenance of Company real estate (Delphi, MSSQL Server) ◦I collaborated in the administration of Linux servers (Debian, Ubuntu), Windows servers and

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Instructor

Youth Clubs of Computing and Electronics

Oct 2006 - Sep 2008 (2 years)

I worked as a programming instructor in Delphi and Visual Basic ◦User level instructor of MS Windows, MS Access and MS Excel.

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Freelance Developer

Tanggo Software

Jun 2006 - Sep 2006 (4 months)

Design and implementation of "Tanggo Gestione Gastronomica", software for recipes management and custom menu printing. (Delphi, MS Access)

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Scientist Intern

Center of Radiation Protection and Hygiene

Sep 2004 - Sep 2006 (2 years 1 month)

I completed my thesis in collaboration with this center in the development of a software for dose estimation and possible efects on the embryo/fetus by medical exposure of the mother. (Delphi) ◦After graduation I joined as a member of the Research and Development Division, among other functions I worked in software development for various division projects, related to medical physics, evaluation and estimation of Internal contamination doses. (Delphi) ◦Involved in the teaching of radio diagnostic and internal contamination subjects to students of the Higher Institute of Technologies and Applied Sciences.

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Senior Software Developer Engineer

Agtium Corp

Lead migration of existent React Native Android applications with performance issues, to Kotlin Android applications for custom Android devices attached to machinery for work management and data collection (Kotlin, JetPack)

Walber Zaldivar

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