Senior Database Administrator

About Unlimit

Unlimit is a global fintech ecosystem built to eliminate financial borders holding businesses back. The company provides the extensive infrastructure needed to scale globally, integrating payment processing, multi-currency business accounts, BaaS and crypto gateways into a single, intelligent platform.

Across 17 offices globally, Unlimit bridges hyper-local expertise with a high-capacity financial network, giving companies the agility to expand across regions with operational confidence and speed. Driving the evolution of payments, Unlimit is transforming its infrastructure from human-operated fintech into AI-native financial infrastructure — where APIs are consumed by machines, integrations are negotiated by agents, and systems evolve continuously through intelligent automation. Our next users are not only humans. They are AI agents acting on behalf of humans and businesses.

Unlimit serves more than the needs of businesses today; we are building the nervous system for a borderless global economy.

The Role We are looking for a Senior Database Administrator to support and evolve our production database landscape across PostgreSQL, Oracle, and AWS-managed database services.   This is a hands-on technical role focused on reliability, performance, availability, security, and automation of mission-critical databases. You will work closely with engineering, SRE, and security teams to ensure our database systems are stable, scalable, and secure by default.   Responsibilities - Administer and support production environments across PostgreSQL, Oracle, Aurora/RDS, MongoDB, and DocumentDB. - Ensure high availability and disaster recovery readiness (replication, backups, PITR, failover testing). - Perform performance tuning, query optimization, and capacity planning. - Implement and maintain backup/restore procedures and upgrade strategies. - Monitor database health and define meaningful alerts and dashboards. - Improve operational processes through automation and Infrastructure as Code. - Support secure access models and enforce governance standards. - Participate in incident response and root cause analysis related to database systems. - Contribute to database standards, documentation, and operational runbooks. - Support developers with schema design, indexing strategies, and performance troubleshooting.   Must Have - 5+ years of hands-on experience in database administration or database engineering. - Strong expertise in PostgreSQL: replication (physical/logical), partitioning, performance tuning, PgBouncer / RDS Proxy, vacuum strategy, pgvector. - Strong experience with Oracle: backup/restore, AWR/ASH diagnostics, Data Guard, patching and upgrade strategies. - Production experience with AWS data services: Aurora (Postgres/MySQL), RDS (Postgres/Oracle), DocumentDB, MongoDB. HA/DR design and PITR implementation experience. - Solid understanding of database security: encryption at rest/in transit, RLS (Postgres) / VPD (Oracle), IAM and least-privilege models, secrets management (KMS / Vault). - Experience with Infrastructure as Code (Terraform) for database provisioning. - Experience with monitoring and observability tools (CloudWatch, Performance Insights, AWR, pganalyze/PMM or similar).   Nice to Have - Multi-region or global database topologies. - CDC and migration tooling (AWS DMS, Debezium). - Experience with vector databases and embeddings. - Cost and capacity optimization experience. - Experience working in high-load fintech or payment environments.