Senior Database Developer (Oracle & PostgreSQL)

Mactores Cognition

Posted: 8 hours ago
Openings: 10
Applicants: 0

Job Description

We are seeking an experienced Senior Database Developer to lead and support Oracle to PostgreSQL/Aurora PostgreSQL migration initiatives. The role involves deep hands-on work across SQL refactoring, schema conversion, DMS operations, performance tuning, and post go-live stabilization. The candidate will work closely with application teams, cloud engineers, and stakeholders to ensure a smooth, performant, and compliant migration.

What you will do

Refactor and convert Oracle SQL, PL/SQL, and database objects to PostgreSQL-compatible SQL/PLpgSQL.
Analyze and remediate AWS SCT (Schema Conversion Tool) findings and limitations.
Manage and maintain Flyway migration codebase (versioned scripts, repeatable migrations, rollbacks).
Identify, troubleshoot, and fix database-related application bugs.
Perform query optimization for PostgreSQL (execution plans, indexing strategies, query rewrites).
Support and monitor AWS DMS during full load and CDC phases.
Diagnose and resolve DMS data and performance issues.
Perform data validation and reconciliation between Oracle and PostgreSQL.
Collaborate with application teams to align SQL behavior and performance expectations.

What are we looking for

Bachelors degree in Computer Science or a related field.
5+ years of experience as an Oracle/PostgreSQL DBA and database developer.
Strong experience with Oracle Database and PostgreSQL / Aurora PostgreSQL.
Hands-on expertise in Oracle to PostgreSQL migration.
Advanced SQL and query performance tuning skills.
Experience with AWS SCT and AWS DMS.
Knowledge of Flyway/Liquibase or similar schema migration tools.
PostgreSQL internals: indexing, statistics, execution plans.
AWS services: RDS/Aurora, CloudWatch, IAM (preferred).

You will be preferred if:

Familiarity with automation and configuration management tools, such as Ansible, Chef, or Puppet.
Familiarity with IAAC tools such as Terraform, CloudFormation.
Familiarity with CI/CD implementation tools like Liquibase/Flyway.
AWS Certified Database Specialty.
AWS Certified Solutions Architect.