Ebay Database Software Engineer 

Ireland, Dublin 

380558343

Database Architecture & Optimization

• Design and implement scalable PostgreSQL database architectures for high availability, partitioning, replication, and disaster recovery.

• Analyze and optimize complex queries, indexing strategies, and database configurations.

• Monitor performance and proactively address bottlenecks in queries and application data flows.

• Implement strong security standards (role-based access control, encryption, security best practices), and ensure compliance with organizational and regulatory requirements.

• Tuning databases through query analysis (EXPLAIN plans), optimized indexing (B-tree, GIN, GiST), configuration adjustments, and query rewriting; implementing partitioning and materialized views as needed for performance at scale.

• Acting as a subject matter expert for development, operations, and business teams; providing guidance on best practices, reviewing code, conducting technical documentation, and mentoring database and engineering staff.

• Proficiency in PostgreSQL and Oracle data types is essential for seamless migrations.

Software Engineering & Automation

• Develop tools, scripts, and services to automate database provisioning, monitoring, backups, migrations, and deployments.

• Write backend services or APIs that integrate with PostgreSQL for application use cases.

• Implement PL/pgSQL functions, triggers, procedures to support business logic.

Reliability, Security & Compliance

• Implement robust database security policies, encryption, and role-based access controls.

• Design and maintain high availability and disaster recovery strategies.

• Ensure compliance with industry regulations and internal security standards.

Collaboration & Leadership

• Mentor developers and junior database engineers on SQL optimization, schema design, and performance tuning.

• Work closely with DevOps/SRE teams on CI/CD pipelines for database changes.

• Participate in incident response and root cause analysis for production database issues.

• 7+ years of professional experience with PostgreSQL in large-scale, production environments.

• Strong SQL and PL/pgSQL skills, with deep understanding of PostgreSQL internals.

• Proven experience in software development (Strong expert level C/C++, Python, Go or Java)

• Experience with schema design, indexing strategies, and data partitioning.

• Hands-on experience with replication, backup, and failover solutions.

• Proficiency in Linux/Unix, shell scripting and Kubernetes.

• Familiarity with version control (Git) and CI/CD practices.

• Strong debugging and performance tuning skills across both database and application layers.

• Experience with containerized environments (Docker, Kubernetes).

• Experience with cloud-managed PostgreSQL services

• Background in migrating from other database platforms (e.g., Oracle, MySQL) to PostgreSQL.

• Experience with microservices and REST API development.

• Familiarity with message queues, event-driven architectures, or streaming platforms (Kafka, Debezium).

• Proficiency in Logical Decoding within PostgreSQL and experience with an open-source Change Data Capture (CDC) platform leveraging this capability are highly advantageous for this position, particularly in supporting real-time analytics pipelines.

Soft Skills

• Strong analytical thinking and problem-solving skills.

• Excellent communication and cross-team collaboration abilities.

• Ability to balance short-term incident resolution with long-term architecture improvements.

• Passion for clean, maintainable, and performant systems.

• Playing a key role in planning for future database growth, implementing new technologies, and setting standards for quality and performance across the organization.

• Bachelor’s or Master’s degree in Software Engineering, or related field (or equivalent work experience).