Senior Database Administrator

The Leaflet

Senior Database Administrator managing CockroachDB and PostgreSQL for Hard Rock Digital. Evolving multi-region database clusters and ensuring production reliability.

Posted 6/23/2026full-timeRemote • Florida • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

AWSAzureCloudGoGoogle Cloud PlatformGrafanaJavaLinuxPostgresPrometheusPythonRDBMSShell ScriptingSQLTerraformUnix

About the role

Key responsibilities & impact

Operate and evolve multi-region CockroachDB clusters and PostgreSQL instances across production, staging, and development.
Investigate contention, serialization retries (SQLSTATE 40001), and range hotspots in the transaction paths behind bets, wagers, settlements, and payouts.
Diagnose leaseholder placement, monotonic-key write pressure, and cross-region latency that turn one query into several network round trips.
Trace a slow query to its execution plan, the plan to optimizer behavior, and the behavior to the schema or application call path that caused it.
Catch plan regressions after statistics changes, schema changes, data growth, or releases, then turn the fix into a safer rollout pattern.
Assess schema-change and backfill risk before it reaches large tables: lock behavior, retry pressure, capacity impact, and rollback path.
Plan capacity, scaling events, and version upgrades that customers don't feel.
Build database observability with Prometheus, Grafana, Mimir, Loki, and Snowflake: dashboards backed by real queries, alerting on leading indicators, and SLO tracking.
Connect database symptoms to application behavior and business events so alerts point at causes.
Join the on-call rota for the data layer, lead incident analysis when the database is part of the failure, and drive blameless postmortems toward durable fixes.
Instrument the system to surface degradation before it becomes an incident.
Build Go and Python tools that make incidents easier to understand: log collectors, explain-plan analyzers, migration checks, capacity models, and runbook generators.
Automate provisioning, configuration, backup, and recovery with Terraform and other infrastructure-as-code tools.
Work with platform engineering on CI/CD, deployment safety, and change management for database-touching services.
Use Claude Code, Codex, and similar harnesses in daily work to investigate incidents, generate probes, draft runbooks, and write tooling.
Keep the harness grounded in logs, traces, metrics, and source code, and verify its output against production facts before you ship it.
Implement and audit access controls, authentication, authorization, and encryption in transit and at rest.
Support data-protection, audit-logging, and retention requirements for a regulated gaming platform.
Build a database center of excellence: documentation, standards, and reusable patterns that other teams build against.
Mentor engineers on database fundamentals, distributed-systems behavior, and operational discipline.
Read CockroachDB and PostgreSQL internals when a problem needs a code-level answer, and bring what you learn back to the team.

Requirements

What you’ll need

5+ years operating production relational databases as a DBA, Database Reliability Engineer, or Data Platform Engineer.
Deep production experience with PostgreSQL, CockroachDB, or another relational database management system, with fluency in the tradeoffs behind isolation, consensus, locality, and query planning.
You understand how a SQL engine works under the hood: MVCC, the Volcano iterator execution model, and cost-based optimizer frameworks such as Cascades.
You apply that knowledge to indexing strategy and to execution plan analysis.
Working knowledge of distributed-systems fundamentals: consensus (Raft and Paxos), distributed transactions, consistency models, and failure modes.
You write tools and automation in Python or Go, and you can debug and suggest fixes to line-of-business code in Java or a similar language.
Experience with infrastructure-as-code and a monitoring and observability stack such as Grafana or Datadog.
UNIX/Linux administration with shell scripting, comfort on a cloud platform (AWS preferred, Azure, or GCP welcome), and willingness to join an on-call rota.
Clear technical writing and speech. You'll work across teams.

Benefits

Comp & perks

Competitive pay and benefits
Flexible vacation allowance
A hybrid / remote working environment
Startup culture backed by a secure, global brand
Opportunity to build products enjoyed by millions as part of a passionate team
Team gatherings around the US and Europe
Employer-sponsored training and conference attendance
Opportunity to work in an AI-first environment with access to the tools you need to excel at your job

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PostgreSQLCockroachDBSQLPythonGoTerraformUNIXLinuxdistributed systemsinfrastructure as code

Soft Skills

technical writingcommunicationmentoringincident analysiscollaborationproblem-solvingleadershiporganizational skillsblameless postmortemscapacity planning