Mainframe DB2 Database Administrator overseeing installation and administration of DB2 databases. Ensuring optimal performance, security, and robustness of the technological infrastructure.
About the role
- Database Administrator ensuring availability, security, integrity of MoMoPSB's database platforms that power high-volume payments. Define database strategy and execute administration to meet objectives.
Responsibilities
- Own the multi‑year database roadmap: engine selection, cloud/on‑prem posture, managed services, and standards.
- Design and govern HA/DR architectures meeting defined SLOs, RPO/RTO for Tier‑0 payment systems.
- Embed security & compliance by design (PCI DSS, CBN PSB, NDPR, ISO 27001): encryption, segregation, least privilege, logging and retention.
- Establish observability strategy (SLOs, error budgets, performance baselines, telemetry).
- Plan capacity and cost: licensing optimization, storage tiering, reservations/commitments.
- Plan/execute major upgrades and migrations with near‑zero downtime; institute schema versioning (Flyway/Liquibase) in CI/CD.
- Implement robust backup & recovery strategies including immutable/WORM copies and quarterly restore drills.
- Engineer performance: indexing, partitioning, query tuning, connection management, and workload management.
- Harden security: RBAC, PAM/MFA, key management, secrets rotation, audit and access reviews.
- Enable data integration: CDC/ETL to analytics, fraud systems, and regulatory reporting with data quality controls.
- Maintain vendor relationships and optimize licenses/support contracts.
- Provision, configure, and patch databases; manage users/roles; maintain schemas and jobs.
- Monitor availability, replication lag, locks/deadlocks, storage growth; triage and resolve incidents.
- Execute backups (full/incremental) and validate restores; maintain offsite/air‑gapped copies.
- Support releases and change management; review SQL changes and advise on best practices.
- Maintain runbooks, architecture diagrams, SOPs, and compliance evidence.
Requirements
- 3–7 years hands‑on DBA experience in high‑availability, high‑throughput environments (financial services/telco preferred).
- Track record delivering HA/DR, performance tuning, security hardening, and major version upgrades/migrations.
- Experience operating in cloud (AWS/Azure) using services such as RDS/Aurora or Azure SQL Managed Instance.
- Expertise with at least two engines: PostgreSQL, Oracle, SQL Server, MySQL; familiarity with NoSQL (MongoDB/Cassandra) a plus.
- Proficiency in SQL, PL/pgSQL, T‑SQL, PL/SQL; query optimization, indexing, partitioning.
- Replication & HA (Always On/AG, Data Guard, Streaming/Logical replication).
- Backup/Recovery (RMAN, pgBackRest, PITR, snapshot strategies).
- Security (TLS, TDE, RBAC, tokenization/masking, auditing) and key management (KMS/Key Vault).
- Observability (pg_stat_statements, AWR, Extended Events, Prometheus/Grafana, CloudWatch/Azure Monitor).
- Automation with Terraform/Ansible; scripting in Bash/Python; schema migration tools (Liquibase/Flyway).
Benefits
- Bachelor's degree in computer science, Engineering, Information Systems or related field.
- Relevant certifications are an advantage (e.g., Oracle OCP, Microsoft DP‑300/DP‑900, AWS/Azure database certifications, ITIL).
Job title
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