Senior Database Administrator – Oracle (ExaCC / Exadata)

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: €1.900–€2.100 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!

We can build the future together. Let’s talk!

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.

#J-18808-Ljbffr