Ezequiel Júnior
@ezequieljnior
I manage Oracle databases, IT infrastructure, and technology projects supporting national-scale operations and cashless payments.
MozambiqueWhat I'm looking for
I've managed Oracle databases and IT infrastructure for Mozambique's National Institute of Social Security (INSS), supporting national social security operations for eight years. I led the migration from Oracle 11gR2 to 19c with zero data loss, maintained 95% uptime across approximately 12 virtual Oracle database servers, and reduced a critical data-loss issue to under 2%.
Now I work independently on corporate IT support, systems implementation, procurement, and cashless-payment projects for clients including Armazém Fabrice EI, Lyssa Transportes, Brumarine Group, Ani Import & Export, and Tipsy. My background also includes Oracle consulting at BDO Mozambique, billing reporting at Vodacom Mozambique, and application development in Java-based e-learning systems.
Experience
Work history, roles, and key accomplishments
Independent Service Provider
Self Employed
Nov 2024 - Present (1 year 10 months)
Managed corporate IT services, user support, and device configuration for multiple clients. Led business implementation and trained users on cashless payment systems.
Database & Systems Administrator
National Institute of Social Security (INSS)
Mar 2016 - Jun 2024 (8 years 3 months)
Administered 12 virtual Oracle database servers, ensuring 95% uptime and leading migration from 11gR2 to 19c with zero data loss. Managed backup, recovery, and performance tuning for national operations.
Service Desk & Help Desk Technician
National Institute of Social Security (INSS)
Jun 2014 - Feb 2016 (1 year 8 months)
Provided help desk support to approximately 1,000 employees, monitored services and servers, and managed support tickets.
Information Systems Manager
Vodacom Mozambique
Apr 2014 - Jun 2014 (2 months)
Produced billing reports on call duration, SMS volume, and mobile network usage for Finance and Customer Relations. Administered the Bulk Messaging Distribution System supporting outreach to 2+ million users.
Consultant
BDO Mozambique
Aug 2012 - Mar 2014 (1 year 7 months)
Supported approximately 10 clients across accounting, tax, and legal sectors. Performed Oracle database migrations and developed an internal Oracle APEX web application.
Application Developer
ISUTC-LIMEAA
May 2011 - Jun 2012 (1 year 1 month)
Maintained and corrected modules of an existing e-learning application built on Java, Spring, and ZK frameworks. Supported course material delivery and student testing for ~500 students.
Help Desk Technician
Mozambique Airlines (LAM)
Dec 2010 - Feb 2011 (2 months)
Supported approximately 620 users, maintained LAN infrastructure, and managed company-wide Kaspersky Antivirus deployment and updates.
Education
Degrees, certifications, and relevant coursework
ISEG
Data Science using Python, Data Science
2023 - 2023
Completed Data Science using Python training at ISEG, Lisbon, Portugal, in June 2023.
ISEG
Minimal Web, HR, Accounting and Support
2023 - 2023
Completed Minimal Web: HR, Accounting and Support training at ISEG, Lisbon, Portugal, from October to November 2023.
Orsers
Oracle Database 19c: Administration Workshop, Database Administration
2022 - 2022
Completed Oracle Database 19c: Administration Workshop at Orsers, Dubai, UAE, in September 2022.
Orsers
Oracle Database 19c: Backup and Recovery, Database Administration
2022 - 2022
Completed Oracle Database 19c: Backup and Recovery training at Orsers, Dubai, UAE, in September 2022.
Oracle University
Oracle Database 19c: SQL Workshop, SQL
2022 - 2022
Completed Oracle Database 19c: SQL Workshop at Oracle University, Maputo (Online), in May 2022.
Impactful
Oracle Database 19c: Multitenant Architecture, Database Architecture
2022 - 2022
Completed Oracle Database 19c: Multitenant Architecture training at Impactful, Johannesburg, South Africa, in June 2022.
INSPUR
Cloud Computing and Data Center Management, Cloud Computing and Data Center Management
2019 - 2019
Completed Cloud Computing and Data Center Management training at INSPUR, Jinan, China, in August 2019.
ILO-ITC
Actuarial Modeling for Social Security Protection Analysis, Actuarial Modeling
2018 - 2018
Completed Actuarial Modeling for Social Security Protection Analysis training at ILO-ITC, Turin, Italy, in November 2018.
DataPrev
ITIL v3 Workshop, IT Service Management
2016 - 2016
Completed ITIL v3 Workshop at DataPrev, Rio de Janeiro, Brazil, in April 2016.
Koenig Solutions / Matrix Group
MSSQL Server 2012; MS Exchange Server 2013, Database and Server Administration
2015 - 2015
Completed MSSQL Server 2012 and MS Exchange Server 2013 training at Koenig Solutions / Matrix Group, Maputo, in 2015.
Koenig Solutions
OCA / OCP & Performance Tuning, Oracle 11gR2, Oracle Database Administration
2014 - 2015
Completed OCA / OCP & Performance Tuning, Oracle 11gR2 training at Koenig Solutions, Maputo, from December 2014 to January 2015.
Koenig Solutions
ASP.NET, C#, HTML5, CSS3, JavaScript, Web Development
2014 - 2014
Completed ASP.NET, C#, HTML5, CSS3, JavaScript training at Koenig Solutions, Maputo, in 2014.
ISUTC
Degree, Computer Science and Telecommunications Engineering
2008 - 2012
Degree in Computer Science and Telecommunications Engineering from ISUTC, Maputo, Mozambique, from 2008 to 2012.
Tech stack
Software and tools used professionally
Availability
Location
MozambiqueAuthorized to work in
Salary expectations
Social media
Job categories
Skills
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