Senior DBA – Oracle, PostgreSQL, MongoDB

Cedro Technologies

. Administer, operate, and optimize Oracle, PostgreSQL, and MongoDB environments .

Posted 11/6/2026contractRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in administering and optimizing Oracle, PostgreSQL, and MongoDB databases, with a strong focus on performance tuning, backup and recovery strategies, and high availability. Proven ability to lead database migrations and collaborate effectively with cross-functional teams to establish technical standards and compliance policies.

Highest-signal resume keywords

Oracle Database AdministrationPostgreSQL AdministrationMongoDB AdministrationPerformance TuningHigh Availability Strategies

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Database AdministrationBackup and RecoveryPerformance OptimizationData ModelingCapacity PlanningDisaster RecoveryQuery TuningReplicationShardingTechnical Documentation

Soft Skills

Strong CommunicationCollaborative TeamworkAutonomous WorkConsultative Approach

Tools & Technologies

TerraformAnsiblePrometheusGrafanaAWSAzureGCP

Industry Keywords

Financial ServicesHigh Transaction VolumesCompliance PoliciesTechnical Standards

Tech Stack

Tools & technologies

AnsibleAWSAzureGoogle Cloud PlatformGrafanaMongoDBOraclePostgresPrometheusRedisTerraform

About the role

Key responsibilities & impact

Administer, operate, and optimize Oracle, PostgreSQL, and MongoDB environments
Lead the restructuring and modernization of the data environment by identifying risks, bottlenecks, and technical debt
Implement and enhance backup, recovery, high availability, and disaster recovery strategies
Perform performance tuning of queries, indexes, execution plans, and capacity planning
Collaborate with Development and Architecture teams on data modeling, query reviews, and the definition of technical standards
Establish database security, access control, and compliance policies
Proactively monitor the environment by defining metrics and alerts
Lead migrations, version upgrades, and environment consolidation initiatives
Document processes, architectures, and runbooks
Serve as a technical reference for databases, supporting architectural decisions across different squads

Requirements

What you’ll need

Solid experience as a DBA in highly critical production environments
In-depth knowledge of Oracle, including administration, tuning, backup, recovery, and high availability
In-depth knowledge of PostgreSQL, including administration, tuning, replication, and backup/recovery
Hands-on experience with MongoDB, including administration, data modeling, replica sets, sharding, and performance optimization
Experience working in high-availability environments with high transaction volumes
Ability to work autonomously, proactively, and in a consultative capacity
Strong communication skills and the ability to collaborate effectively with Development, Infrastructure, and Product teams
English proficiency: Level 3
Contractor engagement (PJ)
Nice to have: experience in the financial services industry; knowledge of Redis; automation using scripts, Terraform, Ansible, or Infrastructure as Code; observability with Prometheus, Grafana, or APM; managed databases on AWS, Azure, or GCP; familiarity with OMS, Market Data, or integration with B3