MOHAMED AYOUB BEN HALIMA
SENIOR DATABASE ADMINISTRATOR
Tunis, Tunisia
--www.linkedin.com/in/mohamed-ayoub-ben-halima-36501b20
PROFESSIONAL
SUMMARY
Senior Database Administrator with over 15 years of experience managing complex Oracle,
PostgreSQL, and SQL Server database environments, I help organizations ensure the
performance, stability, and security of their critical systems. My expertise includes automating
routine tasks ⎻ reducing manual interventions by more than 60% ⎻ performance optimization,
proactive monitoring, high availability and strengthening security.
My expertise includes database administration and monitoring (RAC and standalone
environments), advanced SQL tuning (rewriting queries, indexing, statistics), and process
automation (archiving, purging, backup management). By reducing manual work by more
than 60%, I improve efficiency, minimize downtime, accelerate operations, and improve
platform reliability. With proven achievements in the telecom, banking, and IT services sectors,
I also leverage strong skills in project management, technical audits, and team leadership to
deliver sustainable and measurable results.
CORE SKILLS &
TECHNOLOGIES
Databases: Oracle (10g–21c), PostgreSQL
Expertise: Performance tuning, query
(15–17), SQL Server (2019/2022), MySQL
Tools: RMAN, AWR, Data Guard, RAC,
Data Pump, OPatch, Cloud Control
(12c/13c)
Languages: SQL, PL/SQL, Shell, Python,
Java, Spring Boot, Angular, Docker
optimization, database modeling,
automation, High availability
Systems: Linux (RedHat, CentOS, Ubuntu),
Unix (AIX, Solaris), Windows Server
Other: IT Security, Networking, Project
Management
..
PROFESSIONAL
EXPERIENCE
1 year & 6 months
FOUNDER & CEO, 05/2024 - Current
ADFI NEW TECH, Tunis
Provided consulting services to clients, ensuring the reliability and optimal performance of
their databases and information systems.
Delivered Oracle DBA and backup consulting at Ooredoo, resulting in 70% improvement in
system availability and a substantial enhancement in data security.
Designed and deployed automation scripts, increasing operational efficiency and reducing
manual workload by more than 70%.
Managed the IT infrastructure at MITIGAN CIB, ensuring stability and continuous service
delivery.
Maintained and deployed source code updates for the DQM Suite solution, while providing
client support to improve user experience and overall system reliability.
Technical tools: Oracle (11g/12c/19c/21c), SQL Server (2019 & 2022), PostgreSQL (15/16/17),
Cloud Control (12c/13c), Shell scripting, Data guard, SQL, PL/SQL, AWR, RMAN, Toad,
expdp, impdp, transportable tablespaces.
Development tools: Spring boot, Angular, JPA, Eclipse, Python, Docker
Environments: Windows Server, Linux (Redhat)
ORACLE DATABASE ADMINISTRATOR, 02/2023 - Current
2 years & 9 months
NUMERYX, Tunis
Improved the reliability of Ooredoo's critical databases, achieving a significant reduction in
downtime and service disruptions.
Automated backup, archiving, and partition management processes, cutting manual
workload by 70% and minimizing human errors.
Optimized slow SQL queries, reducing execution time from over 30 minutes (with crashes) to
under 2 minutes, improving application performance and availability.
Implemented continuous system monitoring, enabling faster issue detection and resolution
to maintain high availability.
Deployed and managed RAC and standalone environments (installation, configuration,
and administration).
Administered PostgreSQL and SQL Server databases, including setup, configuration, tuning,
and security hardening.
Technical tools: Oracle (11g/12c/19c/21c), SQL Server (2019 & 2022), PostgreSQL (15/16/17),
Cloud Control (12c/13c), Shell scripting, Data guard, SQL, PL/SQL, AWR, RMAN, Toad,
expdp, impdp, transportable tablespaces.
Environments: Windows Server, Linux (Redhat)
IT MANAGER / ORACLE DBA, 08/2018 - 02/2023
4 years & 7 months
MITIGAN CIB, Tunis
Administered databases for Credit Bureau Solution (CBS) ensuring security and high
availability.
Developed and maintained RMAN backup scripts and recovery procedures.
Led IT operations, including network, system, and security management.
Coordinated with external audit specialists to ensure compliance with security standards.
Managed the acceptance and validation of the CBS solution as SPOC with the vendor.
DQM Suite: Managed end-to-end design, development, and deployment of a data quality
solution (deduplication, normalization, cleaning).
Technical tools:Oracle (12c), Mysql, Shell scripting, Data guard, SQL, PL/SQL, AWR, RMAN.
Development tools: Spring boot, Angular, JPA, Eclipse, Python, Docker.
Environments: Windows Server, Linux (Redhat), FW Sophos
TECHNICAL SERVICE MANAGER, 09/2017 - 07/2018
11 months
Sofrecom, Tunis
Supported development teams in resolving database performance issues.
Delivered advanced SQL/PLSQL extractions and optimized queries.
Built a microservice for automated data extraction, streamlining reporting processes
Technical tools: Oracle 12c, SQL, PL/SQL, AWR, RMAN, Shell, SQL developer.
Development tools: java, Spring boot, Angular, JPA, Eclipse, JAXB.
Environments: Windows, Linux (Redhat)
SOFTWARE ENGINEER SPECIALIST (ORACLE DBA), 03/2010 - 09/2017
7 years & 7 months
FIS/SUNGARD, Tunis
Managed database administration for APSYS banking system.
Maintained PL/SQL packages and rewrote procedures for multi-application support.
Implemented Oracle patches, upgrades, and standby database management.
Supported clients and developers with database troubleshooting and query optimization.
Maintained DMSDB (Database Model Management Tool), adding new features and fixing
issues.
Technical tools: Oracle 10g & 11g &12c, Shell scripting, SQL, PL/SQL, RMAN, Daa guard,
AWR, tkprof, sqlhc, Sqldeveloper, Sqlmodeler.
Development tools: Java, SVN, Eclipse, Visual Studio, Open JMS, activeMQ, C, XSLT
Environments: Windows, UNIX (AIX, SunOS and Ubuntu)
WEB APPLICATIONS R&D ENGINEER , 07/2009 - 02/2010
AMD Consulting, Tunis
Developed and deployed web services for STEG's ALPHA module automation.
Designed and implemented real estate web portal with CMS customization.
Participated in feasibility analysis, architecture, and project management.
EDUCATION &
CERTIFICATIONS
8 months
UDEMY, 05/2025
PostgreSQL for Oracle DBA: PostgreSQL database administration course
UDEMY, 12/2024
Complete Microsoft SQL Server Database Administration Course: SQL Server database
administration course
Oracle (TOD), 02/2019
Oracle Database 12c R2: Clusterware Administration Ed 2 : Oracle clusterware administration
course
Oracle, 12/2014
Oracle Database 11g Administrator Certified Associate
Oracle, 12/2012
Oracle SQL Certified Expert
ENIS, Sfax, Tunisia, 01/2006 - 01/2009
Software Engineer
LANGUAGES
French :
English :
Opérationnel
Opérationnel
Arabic :
Langue maternelle
HOBBIES
#HRJ#d1 50c793-2ce1-4555-9ba4-aeaca2b834df#
Sports (swimming, football, running)
Music
