Senior Database Developer (Oracle & PostgreSQL)

Mactores is a trusted leader among businesses in providing modern data platform solutions. Since 2008, Mactores have been enabling businesses to accelerate their value through automation by providing End-to-End Data Solutions that are automated, agile, and secure. We collaborate with customers to strategize, navigate, and accelerate an ideal path forward with a digital transformation via assessments, migration, or modernization. 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? Bachelor's 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. Life at Mactores We care about creating a culture that makes a real difference in the lives of every Mactorian. Our 10 Core Leadership Principles that honor Decision-making, Leadership, Collaboration, and Curiosity drive how we work. 1. Be one step ahead 2. Deliver the best 3. Be bold 4. Pay attention to the detail 5. Enjoy the challenge 6. Be curious and take action 7. Take leadership 8. Own it 9. Deliver value 10. Be collaborative We would like you to read more details about the work culture on https://mactores.com/careers The Path to Joining the Mactores Team At Mactores, our recruitment process is structured around three distinct stages: Pre-Employment Assessment: You will be invited to participate in a series of pre-employment evaluations to assess your technical proficiency and suitability for the role. Managerial Interview: The hiring manager will engage with you in multiple discussions, lasting anywhere from 30 minutes to an hour, to assess your technical skills, hands-on experience, leadership potential, and communication abilities. HR Discussion: During this 30-minute session, you'll have the opportunity to discuss the offer and next steps with a member of the HR team. At Mactores, we are committed to providing equal opportunities in all of our employment practices, and we do not discriminate based on race, religion, gender, national origin, age, disability, marital status, military status, genetic information, or any other category protected by federal, state, and local laws. This policy extends to all aspects of the employment relationship, including recruitment, compensation, promotions, transfers, disciplinary action, layoff, training, and social and recreational programs. All employment decisions will be made in compliance with these principles. Note: Please answer as many questions as possible with this application to accelerate the hiring process.