Senior Database Reliability Engineer (DBRE)

Justjoin; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Justjoin is seeking a Senior Database Reliability Engineer (DBRE) with deep PostgreSQL experience to own and improve critical production clusters. You will drive high availability, backups, and performance tuning while supporting MongoDB/Redis and learning ClickHouse.

The role emphasizes automation with Ansible and IaC tools (Terraform/OpenTofu, Puppet/Chef) and strong observability. Join a growing software company focused on reliability and scalable backend infrastructure, collaborating across

Qualifications

• 5+ years of professional experience in database administration.
• 5+ years of hands-on PostgreSQL experience, incl. production clusters.
• 2+ years administering MongoDB in production.
• Experience with high-availability, failover and DR planning.
• Linux administration experience with networking and storage troubleshooting.
• Automation with Ansible and IaC tools.
• Experience with Terraform/OpenTofu or similar such as Puppet/Chef.
• English at upper-intermediate level or higher.

Responsibilities

• Operate and improve production PostgreSQL clusters with HA, replication, failover and upgrades.
• Tune PostgreSQL performance across queries, indexes, locks, vacuum and capacity.
• Manage backups, point-in-time recovery and regular restore testing.
• Support MongoDB and Redis in production; troubleshoot incidents and access/data-safety changes.
• Learn ClickHouse and share ownership of day-to-day operations.
• Automate routine DBA tasks using Ansible, Terraform/OpenTofu, and CI/CD pipelines.
• Build self-service capabilities for database provisioning and credentials.
• Maintain observability through dashboards, metrics, SLOs and alerts.

Skills

Database administration

PostgreSQL operations

MongoDB production

Linux administration

Ansible automation

Terraform/OpenTofu

AI-assisted tooling

English proficiency

Tools

Ansible

Terraform/OpenTofu

Puppet

Chef

Job description

Senior Database Reliability Engineer (DBRE) We are looking for a Senior Database Reliability Engineer (PostgreSQL) to join an established software company. In this role, you'll contribute to the reliability, performance, and scalability of critical backend infrastructure and database systems.

Requirements

• 5+ years of professional experience in database administration
• 5+ years of hands-on PostgreSQL experience, including designing and operating production clusters
• Strong knowledge of PostgreSQL operations: replication, query tuning, locking, indexes, vacuum and bloat management, major upgrades, backups, and point-in-time recovery
• 2+ years of experience administering MongoDB in production
• Experience running highly available databases, including failover, recovery, and disaster-recovery planning
• Linux administration experience, including networking, storage, and performance troubleshooting
• Automation experience with Ansible
• Experience with Terraform/OpenTofu or a comparable tool such as Puppet or Chef
• Practical experience with AI-assisted engineering tools and readiness to use them extensively in daily work
• English at upper-intermediate level or higher, spoken and written

Nice to Have

• Hands-on ClickHouse operations experience
• Experience with cloud platforms such as AWS or Google Cloud
• Experience with Redis, including Sentinel and common cache failure modes
• Familiarity with Percona Backup for MongoDB
• Experience building self-service database provisioning or DBaaS-style workflows
• Experience with database observability: Grafana, SLOs, and alert tuning

Responsibilities

• Operate and improve production PostgreSQL clusters, covering high availability, replication, failover, and major version upgrades
• Tune PostgreSQL performance across query plans, indexes, locks, vacuum and bloat control, and capacity planning
• Manage backups, point-in-time recovery, and regular restore testing across the database estate
• Support MongoDB and Redis in production, troubleshooting incidents and reviewing access and data-safety changes
• Learn the existing ClickHouse environment and take shared ownership of its day-to-day operations
• Automate routine DBA work - provisioning, access management, backups, and health checks - using Ansible, Terraform/OpenTofu, and CI/CD pipelines
• Build self-service capabilities that let engineering teams request databases and credentials without manual DBA involvement
• Maintain and improve observability through dashboards, metrics, SLOs, and alert rules