Freelancer profile translated to English.

Description

Senior Oracle DBA with over 25 years of experience managing mission-critical Oracle environments.

Currently responsible for ~200 Oracle instances (11g, 12c, 19c) in RAC and Oracle Restart setups.

Specialized in database migrations, performance stabilization, execution plan control, and production incident recovery.

Pragmatic, risk-focused approach with strong operational discipline.

I am a senior Oracle DBA with over 25 years of experience in critical and production environments, and a previous background as a developer and analyst, which allows me to understand both the database and the business and the applications that use it.

My work style is methodical, pragmatic, and risk-reduction oriented. Before acting, I analyze the context, validate the real state of the system, and always ensure a way back (backup and rollback). I do not improvise in production or apply generic solutions: each environment has its history and its limits.

I bring real value when systems are complex, legacy, or critical: stabilizing performance, ensuring execution plans, resolving serious incidents, guiding migrations, and leaving environments predictable, documented, and maintainable. My goal is not "that it works today", but that it works the same tomorrow.

I work with a long-term operational vision, prioritizing stability, security, and SLA compliance, and I collaborate closely with technical and business teams so that the database is no longer a risk and becomes a reliable asset.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Fluent
Catalan
Native or bilingual

Workplace preferences

Can work on-site

Barcelona (up to 50km)

Umivale activa
DBA
MEDICAL
January 2001 - Today (25 years and 7 months)
Barcelona, Spain
I am an active Oracle DBA, with over 25 years of experience managing critical environments in a large company.
I currently manage around 200 Oracle instances, in versions 11g, 12c, and 19c, in both RAC and Oracle Restart (OHAS) setups, in production environments with high availability, performance, and security requirements.
My work focuses on daily operations, complex incident resolution, performance optimization, execution plan stability, and SLA maintenance in live systems. I actively manage database migrations, data center changes, version upgrades, and consolidations, always with a focus on minimizing risk and downtime.
Additionally, I have developed and led my own database replication projects, tailored to specific business needs and service continuity, beyond standard solutions.
I work methodically and pragmatically: prior analysis, backup, controlled execution, validation, and documentation. My profile is eminently technical and operational, oriented towards the stability, predictability, and security of Oracle environments.
I am particularly comfortable in complex, legacy, or critical scenarios, where it is necessary to regain control, reduce risks, and leave systems maintainable and well-documented.
Freelance
Backend and Frontend
January 1990 - February 2026 (36 years and 1 month)
Barcelona, Spain
Since 1990, I have also worked as an independent freelancer, developing complete technological solutions for small and medium-sized businesses.
I have carried out projects as a backend and frontend developer, including the development of management applications, online stores, integrations with external systems, and evolutionary maintenance of existing platforms. I have participated directly in functional design, data modeling, development, deployment, and support.
In addition, I have managed aspects related to data protection (LOPD/RGPD), basic system security, access control, and best practices in handling sensitive information, especially in environments with personal and financial data.
This freelance experience has allowed me to develop a great capacity for adaptation, direct client communication, and a practical approach to solving real problems. I understand budget, time, and resource limitations, and I prioritize effective, sustainable, and proportionate solutions.
Combined with my current profile as a senior Oracle DBA, this background provides a transversal vision: from the application and the end-user to the database and infrastructure, facilitating balanced technical decisions oriented towards value.
Logical 2000
Analyst Developer
January 1990 - December 2000 (10 years and 11 months)
Between 1990 and 2000, I was a founder and technical manager of a company dedicated to the development of management software for accounting firms and SMEs.
During that period, I designed, developed, and maintained complete solutions for:
Payroll management
Accounting
Commercial management
Taxation and income
Integrated administrative applications
I acted as a functional analyst and developer, participating in the entire software lifecycle: requirements analysis, data model design, development, testing, deployment, and end-customer support.
This period gave me a deep understanding of the business, real administrative processes, and how software directly impacts the daily operations of companies. It also laid a solid foundation in data modeling, business logic, and performance, which I have subsequently applied for decades in corporate database environments.
This early experience as a developer allows me today to work as a DBA with a complete end-to-end vision, understanding both the database and the needs and limitations of the applications that use it.