Senior DBA

About Us

The Unit is a software development company focused on Sportsbetting, Gambling & iGaming industries, with headquarters in Ireland. Our team is delighted to have been collaborating with customers from across the globe since 2017.

We are currently looking for a Senior Database Administrator (DBA) to join one of our clients — a leading company in the sports betting industry, working on a Sportsbook Platform and High-Performance Multi-Tenant Systems.

Key Responsibilities

• Design, implement, and maintain PostgreSQL-based data systems supporting a global, high-throughput sportsbook platform.
• Lead schema design, data modeling, partitioning, and sharding strategy exploration, ensuring scalability and data isolation across multiple operators and jurisdictions.
• Optimize SQL queries, indexes, and execution plans for latency-sensitive workloads such as odds updates, bet placements, and settlements.
• Implement and maintain data-security and isolation mechanisms, including row-level security (RLS) and tenant-aware access controls.
• Collaborate with engineering teams to define and maintain data-access contracts, schema evolution workflows, and ORM configurations (Drizzle ORM, JPA, etc.).
• Manage database migrations, versioning, and CI-integrated testing pipelines using Flyway, Liquibase, or equivalent tools.
• Define and enforce backup, replication, and recovery procedures, including PITR, snapshotting, and disaster-recovery drills.
• Oversee performance monitoring and observability, building dashboards and alerts using Prometheus, Grafana, or comparable tooling.
• Work with DevOps and Platform teams to ensure smooth infrastructure integration, whether databases are deployed in traditional VMs, managed cloud services (RDS/Aurora), or containerized environments.
• Support data-lifecycle management initiatives - retention, archival, and anonymization - aligned with regulatory and compliance requirements.
• Contribute to cross-functional performance investigations, identifying root causes across data, API, and caching layers.
• Provide mentorship and technical guidance to developers and junior DBAs, promoting sound SQL design and efficient data-access patterns.

Requirements

• 5+ years of professional experience managing and tuning PostgreSQL in production environments.
• Deep expertise in SQL query optimization, index design, locking analysis, and execution-plan interpretation.
• Strong grasp of multi-tenant data design patterns , including schema-per-tenant, partitioning, and horizontal-scaling techniques.
• Experience with backup/recovery, replication, and failover strategies.
• Familiarity with scripting and automation (Bash, Python, or Go) for operational and diagnostic tooling.
• Experience integrating schema changes into CI/CD pipelines using version-control-based migration tools (Flyway, Liquibase, Drizzle).
• Working knowledge of Redis or similar in-memory caching systems.
• Understanding of observability stacks (Prometheus, Grafana, ELK/Loki) and database health metrics.
• Awareness of containerized and cloud-managed database environments (Kubernetes, Helm, AWS RDS, Cloud SQL), with the ability to operate effectively in both traditional and modern setups.
• Strong communication skills and an analytical, code-oriented mindset, comfortable collaborating with engineers and platform teams.
• Upper-intermediate English or higher, with clear documentation and collaboration habits.

Nice to Have

• Experience with distributed PostgreSQL or sharding frameworks (Citus, Yugabyte, CockroachDB, or similar).
• Familiarity with event-driven data flows (Kafka, CDC pipelines, replication slots).
• Exposure to analytics or reporting pipelines on top of OLTP data.
• Knowledge of data compliance frameworks (GDPR, ISO 27001).
• Certifications in PostgreSQL Administration, Performance Tuning, or Kubernetes (CKA/CKAD).

What We Offer

• Competitive salary that matches your skills, with regular reviews to keep it in line with your growth.
• Flexible working hours and remote work, helping you balance work and life in a way that suits you.
• Covering your costs for professional development (training and obtaining certifications), so you can keep learning and growing in your role.
• Challenging projects that keep things interesting and help you push your skills.
• A collaborative environment where your ideas matter and you can make a real impact.

If you are a Senior DBA with a passion for technology and a desire to make a difference, we'd love to hear from you. Join us in shaping the future of IT and apply today! The Unit is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

APPLY NOW!