Senior Database Administrator - Oracle (Exacc / Exadata)

IRIUM Portugal; Lisboa; Híbrido; EUR 61 000 - 95 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Medical insurance

Flexible pay

Training opportunities

Resumo da oferta

IRIUM Portugal is seeking a Senior Database Administrator – Oracle (ExaCC / Exadata) to lead performance tuning, resource optimisation and delivery across complex production environments in Lisbon. You will guide development teams on SQL/PL-SQL coding and collaborate with infrastructure, security, and operations to ensure reliability.

The role requires 5–10 years in Oracle production, a university degree, and a valid EU work permit.

Qualificações

• Hands-on Oracle production experience and strong performance tuning skills.
• Experience with Exadata and ExaCC environments.
• Ability to guide development teams on SQL/PL-SQL coding and optimization.

Responsabilidades

• Lead Oracle performance tuning, resource optimisation and project delivery across complex production environments.
• Guide development teams on database design, SQL coding and scalability best practices.
• Collaborate with infra, security and operations to ensure reliability and compliance.

Conhecimentos

Oracle RAC

Data Guard

RMAN

OEM

SQL

PL/SQL scripting

ExaCC CPU optimisation

Query tuning

Indexing strategies

Exadata environments

Kerberos authentication

TDE

Root Cause Analysis

Formação académica

University degree in Computer Science, Engineering or a comparable technical field

Ferramentas

Jenkins

UrbanCode Deploy

Qlik Replicate

Git / Bitbucket

ServiceNow

Jira

DBeaver

OCP certification

Descrição da oferta de emprego

At IRIUM we want you to always chase your dreams. Here, prepare yourself to conquer your goals, while enjoying the journey.

We are currently looking for a Senior Database Administrator – Oracle (ExaCC / Exadata) with strong expertise in Oracle database performance optimisation, resource efficiency and project delivery across complex production environments.

Required Competencies

• 5–10 years of hands‑on experience
• with Oracle databases in production environments
• University degree in Computer Science, Engineering or a comparable technical field
• Strong expertise in Oracle database performance tuning, compression and resource optimisation

Strong Knowledge Of

• Oracle RAC
• Data Guard
• RMAN
• Oracle Enterprise Manager (OEM)
• SQL
• PL/SQL scripting
• Experience with ExaCC CPU optimisation, compression techniques, query tuning and indexing strategies
• Strong understanding of Exadata environments
• Experience optimising database performance with a focus on CPU efficiency, storage cost reduction and I/O efficiency
• Experience with Kerberos authentication and Oracle Client upgrades
• Knowledge of Transparent Data Encryption (TDE)
• Experience with database auditing and compliance controls
• Experience performing Root Cause Analysis (RCA) for performance incidents and complex database issues
• Ability to guide development teams on database design, SQL coding, performance and scalability best practices
• Knowledge of Linux and/or Unix environments
• Knowledge of Windows environments
• Experience with Oracle SQL Developer and Toad for Oracle
• English – C1 (spoken and written)
• Valid work permit or EU/Schengen nationality allowing legal employment in Portugal

Preferred Competencies

• Hands‑on experience with Oracle ExaCC (Exadata Cloud@Customer)
• Experience with Oracle ZFS and ZDLRA
• Experience optimising backup and recovery processes
• Knowledge of Azure SQL and/or PostgreSQL
• Knowledge of Azure Synapse and/or DB2

Experience With

• Jenkins
• UrbanCode Deploy
• Qlik Replicate
• Git / Bitbucket
• ServiceNow
• Jira
• DBeaver
• Oracle Certified Professional (OCP) or equivalent certification
• Experience working in regulated environments, such as financial services
• French and/or Dutch language skills

Soft Skills

• Strong analytical and structured problem-solving skills
• Ability to communicate complex technical findings clearly
• Strong collaboration with infrastructure, development and project teams
• Ability to work effectively with technical and non-technical stakeholders
• Continuous improvement mindset
• Ability and willingness to work across multiple database technologies
• Strong focus on performance, reliability and resource efficiency

Location

Lisbon – Hybrid

Salary Range

Salary Range: €*****–€***** gross/month

Note: Includes all components: Fixed, Variable, Meal Allowance, Remote Work, and Benefits.

What do we offer?

• An innovative and growing company, with a lot of opportunities for professional development.
• Retribution according to your experience and performance. Access to flexible pay and medical insurance as a social benefit.
• Unlimited access to technological training in free mode.

IRIUM is a company with dynamic and proactive professionals. Our values are responsibility and commitment to work quality. This is the spirit we are looking for at IRIUM, whatever your age is. If you recognize yourself in this, this is your company!

At IRIUM we defend a world without stereotypes or limitations and we believe in equality for all, principles that we subscribe to in our Equality Plan and Code of Ethics, guaranteeing equal treatment and opportunities regardless of any personal, physical or social condition.