Senior DBA: Lead High-Perf MySQL/PostgreSQL & QuestDB

Aquis Exchange PLC

Greater London

Hybrid

GBP 70,000 - 95,000

Full time

14 days+
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Job summary

Aquis Exchange is seeking a Database Administrator to join the Infrastructure team and take ownership of our database estate. This hands-on role covers day-to-day administration, reliability, design and support across MySQL, Redis, QuestDB, Dolt and Elasticsearch.

The successful candidate will work closely with Engineering and Operations to ensure high-performing, well-managed databases that support our exchange technology products and Grafana dashboards.

Qualifications

  • Proven hands-on DBA experience in fast-paced production environments.
  • Strong MySQL and PostgreSQL administration, replication, tuning.
  • Experience with QuestDB and data time-series workloads is highly desired.
  • Familiarity with Dolt or Git-for-data workflows.
  • Knowledge of backup/restore, DR, and RPO/RTO.
  • Experience with Grafana dashboards integration.
  • Linux server administration and scripting.

Responsibilities

  • Administer, monitor, and maintain the database estate ensuring high availability.
  • Plan upgrades, patching, and migrations with minimal disruption.
  • Design and test backup/restore procedures with defined RPO/RTO.
  • Monitor health, capacity, performance, and resolve bottlenecks.
  • Review schema changes with developers for safety and performance.
  • Support developers with query optimization and index design.
  • Escalate DB issues and coordinate with Eng and Ops teams.
  • Collaborate on integration between app code and databases.
  • Write and optimize SQL for Grafana dashboards.
  • Ensure metrics/logs integrated into monitoring/alerting.
  • Manage DB users, roles, permissions per least privilege.
  • Ensure configurations comply with security policies.

Skills

MySQL
PostgreSQL
QuestDB
Dolt
Redis
Elasticsearch
Grafana
Linux
Backup & recovery
Query optimization
Monitoring & alerting

Tools

QuestDB
Dolt
Grafana
Redis
Elasticsearch
MySQL
PostgreSQL

Job description

Aquis Exchange is seeking a Database Administrator to join the Infrastructure team and take ownership of our database estate. This hands-on role covers day-to-day administration, reliability, design and support across MySQL, Redis, QuestDB, Dolt and Elasticsearch.

The successful candidate will work closely with Engineering and Operations to ensure high-performing, well-managed databases that support our exchange technology products and Grafana dashboards.

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