Database Developer (PostgreSQL/Oracle)

Themesoft Inc.; Village of Menands (NY); On-site; USD 120,000 - 160,000; Full time

Job summary

The Database Development role at Themesoft Inc. involves designing, developing, and maintaining robust Oracle PL/SQL packages and PostgreSQL objects, plus tuning queries and optimizing performance across Oracle and PostgreSQL.

You will migrate Oracle PL/SQL code to PostgreSQL, build RESTful APIs for integration, and develop ETL processes and data pipelines while collaborating with DevOps, QA, and application teams to ensure secure, scalable database solutions.

Qualifications

• Solid experience with PostgreSQL development, PL/pgSQL, design, and query optimization.
• Strong Oracle Database (11g/12c/19c) and PL/SQL programming skills.
• Ability to write complex SQL, stored procedures, packages, triggers, and views.
• Familiarity with data modeling, normalization, and indexing strategies.
• Experience reading Oracle Explain Plan and PostgreSQL Explain Analyze for performance.
• Experience building RESTful APIs and data exchange in JSON/XML formats.
• ETL development and data migration activities; shell scripting for automation.
• Version control with Git; Agile/Scrum methodologies.

Responsibilities

• Design, develop, and maintain Oracle PL/SQL packages, procedures, functions, triggers, and views; PostgreSQL objects.
• Migrate Oracle PL/SQL code to PostgreSQL while preserving functionality and performance.
• Troubleshoot slow SQL, optimize execution plans, indexing, and partitioning.
• Design, develop, and support RESTful APIs for database services integration.
• Build and support ETL processes and data pipelines across systems.
• Collaborate with developers, QA, DevOps, architects, and business analysts.
• Create technical docs, deployment scripts, SOPs, and release procedures.

Skills

PostgreSQL development

PL/pgSQL

SQL queries

Explain Plan

Explain Analyze

RESTful APIs

ETL processes

Unix/Linux shell scripting

Git

Agile/Scrum

Data modeling

Oracle PL/SQL

Oracle Database

Education

Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field

Tools

PostgreSQL

Oracle Database

Git

Unix/Linux

Job description

Database Development: Design, develop, and maintain robust Oracle PL/SQL packages, stored procedures, functions, triggers, views, and complex SQL queries, PostgreSQL database objects, including functions, procedures, triggers, and views using PL/pgSQL.

Database Migration & Conversion: Analyze Oracle database objects, map dependencies, and assist in migrating Oracle PL/SQL code to PostgreSQL while ensuring functionality and performance.

Performance Tuning: Troubleshoot slow-running SQL queries, optimize execution plans, indexing strategies, partitioning, and database performance across Oracle and PostgreSQL environments.

API Development & Integration (Preferred): Design, develop, consume, and support RESTful APIs for seamless integration between databases and enterprise applications. Collaborate with application teams to expose database services through APIs.

Data Integration: Build, maintain, and support ETL processes and data pipelines to ensure accurate and efficient data movement across systems.

Cross-Functional Collaboration: Work closely with application developers, QA engineers, DevOps teams, architects, and business analysts to deliver secure, scalable, and high-quality database solutions.

Documentation & Deployment: Prepare technical documentation, deployment scripts, release procedures, and standard operating procedures (SOPs) for database changes and production deployments.

Required Skills & Qualifications

Technical Skills

• Solid experience in PostgreSQL development, including PL/pgSQL, database design, and query optimization.
• Strong hands-on experience with Oracle Database (11g/12c/19c) and advanced PL/SQL programming.
• Expertise in writing complex SQL queries, stored procedures, functions, packages, triggers, and views.
• Strong understanding of relational database concepts, data modeling, normalization, and indexing strategies.
• Experience analyzing execution plans using Oracle Explain Plan and PostgreSQL EXPLAIN/EXPLAIN ANALYZE to optimize database performance.
• Hands-on experience with RESTful APIs, including API development, integration, testing, and troubleshooting (preferred).
• Experience working with JSON/XML data formats and API-based data exchange.
• Experience building and supporting ETL processes and data migration activities.
• Proficiency in Unix/Linux shell scripting for database automation and operational tasks.
• Experience using version control tools such as Git
• Familiarity with Agile/Scrum development methodologies.

Preferred Qualifications

• Experience migrating Oracle databases to PostgreSQL.
• Knowledge of Java, Spring Boot, Python, .NET, or Node.js for API integration.
• Familiarity with cloud platforms such as AWS.
• Experience with CI/CD pipelines and DevOps practices.
• Knowledge of messaging technologies such as Kafka or RabbitMQ.
• Oracle and/or PostgreSQL certifications are a plus.

Education

Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field.