Engineer - Database Administrator at MoMo Payment Service Bank (MoMo PSB)

MoMo Payment Service Bank (MoMo PSB) is a fintech subsidiary of MTN Nigeria, licensed by the Central Bank of Nigeria (CBN) with a clear mandate to drive financial inclusion across the country. We are committed to providing accessible, secure, and technology-driven financial services that empower individuals, communities, and businesses—particularly the unbanked and underbanked populations.

Following the final approval of our Payment Service Bank license by the CBN, MoMo PSB officially launched operations on May 17, 2022. Since then, we have continued to expand our reach, delivering innovative financial solutions tailored to the needs of Nigerians across urban and rural areas.

Our vision is to become the largest and most valuable fintech platform in Nigeria, offering simple, trusted, and inclusive financial services that support economic growth and digital transformation.

We are recruiting to fill the position below:

Job Title: Engineer - Database Administrator

Location: Lagos
Employment Type: Full-time

Job Summary

• The Database Administrator (DBA)ensures the availability, security, integrity, andoptimalperformance ofMoMoPSB'sdatabase platforms that power high-volume, real-time payments.
• The DBA defines the database strategy,engineersresilient architectures, and executes day-to-day administration to meet business, regulatory, and costobjectives.

Key Responsibilities

• Own the multi‑year database roadmap: engineselection, 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,loggingand retention.
• Establish observabilitystrategy(SLOs, error budgets, performance baselines, telemetry).
• Plan capacity andcost: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,secretsrotation,auditand access reviews.
• Enable data integration: CDC/ETL to analytics, fraud systems, and regulatory reporting with data quality controls.
• Maintain vendor relationships andoptimizelicenses/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.

Education

• 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).

Experience:

• 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).

Application Closing Date
3rd March, 2026.

How to Apply
Interested and qualified candidates should:
Click here to apply online