L3 Database Administrator — MySQL

5 days ago

th of October City, Giza, Egypt 2P Perfect Presentation Full time $120,000 - $180,000 per year

Role Summary

Looking for a DBA own the reliability, performance, and security of our
MySQL/MariaDB
estate. will design and operate HA/DR topologies, lead incident response (Sev-1), perform deep performance tuning, automate everything you can, and mentor L1/L2 DBAs.

Key Responsibilities

  • Architecture & HA/DR
  • Design, deploy, and operate
    InnoDB Cluster / Group Replication
    ,
    Galera/MariaDB Cluster
    , semi-sync/async replication, multi-source replication.
  • Build and test
    backup/restore
    &
    disaster recovery
    (RTO/RPO) using
    Percona XtraBackup / mariabackup / MySQL Enterprise Backup
    .
  • Implement
    ProxySQL/HAProxy/MaxScale
    , Orchestrator, Keepalived/Consul for failover and traffic routing.
  • Performance & Capacity
  • End-to-end query and instance tuning:
    EXPLAIN
    , optimizer hints, index strategy, partitioning,
    Performance Schema/sys
    , slow log analysis.
  • OS and filesystem tuning on Linux (I/O scheduler, NUMA, hugepages, filesystems), buffer pool sizing, redo/log tuning.
  • Capacity planning (CPU/RAM/IOPS/storage), growth forecasts, and cost/perf trade-offs (cloud vs. bare metal).
  • Operations & Automation
  • Create infrastructure-as-code and runbooks:
    Ansible/Terraform/Bash/Python
    .
  • Continuous monitoring & alerting via
    Percona PMM, Grafana/Prometheus, Datadog, or SolarWinds DPM
    .
  • Drive change, patching, and version upgrades with minimal downtime; lead RCAs and corrective actions.
  • Security & Compliance
  • Implement
    TLS in-flight
    , encryption at rest (InnoDB tablespace/redo/binlog), vault-managed keys, password policies.
  • Set up auditing (
    MariaDB/MySQL Audit Plugin
    ), user/role model, least privilege, and data masking where applicable.
  • Support internal/external audits and follow enterprise standards (change, access, and vulnerability management).
  • Data Engineering Partnering
  • Advise on schema design, migration strategies, data lifecycle (archiving/purging), and SLOs with app teams.
  • Lead migrations (e.g., MySQL MariaDB, on-prem cloud) and version upgrades (10.x/11.x MariaDB, 5.7/8.0 MySQL).
  • Leadership
  • Mentor L1/L2, review designs/SQL, and set best practices; own DB roadmaps and standards.

Required Qualifications

  • 8+ years
    DBA experience, including
    5+ years
    focused on
    MySQL and/or MariaDB
    in production at scale.
  • Proven design/operations expertise with
    at least two
    of: Group Replication/InnoDB Cluster,
    Galera
    (MariaDB Cluster), semi-sync replication, multi-source replication.
  • Advanced troubleshooting of replication lag, conflicts, GTID issues, transaction deadlocks, and crash recovery.
  • Strong performance engineering (indexing, optimizer, schema refactoring, partitioning) and
    Linux
    internals for I/O and memory.
  • Hands-on with
    XtraBackup/mariabackup/MEB
    ,
    ProxySQL/HAProxy/MaxScale
    ,
    Orchestrator
    , and
    PMM/Grafana
    .
  • Scripting proficiency (
    Bash
  • one of
    Python/Go
    ). Git-based workflows and CI/CD familiarity.
  • Solid grasp of
    security hardening
    , auditing, and encryption features in MySQL/MariaDB.
  • Clear communication; able to lead incidents and present RCAs.

Nice to Have

  • Cloud DB services:
    AWS RDS/Aurora MySQL
    ,
    GCP Cloud SQL
    ,
    Azure Flexible Server
    .
  • Experience with
    MaxScale
    (MariaDB Enterprise),
    ColumnStore
    /
    Xpand
    , Percona Server features.
  • Data migration tooling (DMS, gh-ost/pt-online-schema-change).
  • Exposure to adjacent stacks (PostgreSQL/Redis/Kafka) and observability (OpenTelemetry).
  • Certifications (e.g., Oracle MySQL 8.0 DBA, MariaDB Certified).

Soft Skills

  • Strong ownership and urgency, excellent communication with business/functional teams, and the ability to simplify complex issues.
  • Documentation discipline (runbooks, RCAs, architecture diagrams).

Education / Certifications

  • Bachelor's in Computer Science/Engineering (or equivalent experience).
  • Relevant certifications a plus.

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