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Team Tagline
About the role
As a Senior Database Engineer, you will design, build, and operate the data infrastructure that sits at the heart of this platform. You will own both the relational and distributed NoSQL database layers — ensuring they are highly available, performant, secure, and built to scale to hundreds of millions of users without architectural rework. On a financial platform where data integrity, availability, and compliance are non-negotiable, the database layer is one of the most critical surfaces on the platform — and you own it.
Required Skills
Preferred Skills
Responsibilities
- Database Engineering & Design — Own the design, provisioning, and ongoing engineering of the platform's database infrastructure across both relational and distributed NoSQL layers — spanning PostgreSQL and Apache Cassandra deployments on AWS and Azure.
- Relational Database Engineering — Own the platform's PostgreSQL deployments across Azure Database for PostgreSQL and Amazon RDS/Aurora — including schema design, indexing strategies, query optimisation, table partitioning, and replication configuration.
- Distributed & NoSQL Engineering — Own the platform's Apache Cassandra deployments across Azure Managed Instance for Apache Cassandra and Amazon Keyspaces — including data modelling, partition key design, consistency level configuration, compaction strategy tuning, and cluster management.
- High Availability & Disaster Recovery — Design and maintain highly available database configurations across both clouds — including replication, automated failover, cross-region redundancy, and backup and recovery pipelines.
- Cross-Cloud Data Replication & Active-Active Architecture — Design, implement, and continuously validate real-time data replication between the platform's AWS and Azure database environments — across both PostgreSQL and Apache Cassandra — targeting an active-active configuration.
- Performance Engineering — Own database performance end to end — from schema design to query execution.
- Database Security & Compliance — Enforce database security standards across all environments — including AES-256 encryption at rest, TLS 1.2+ in transit, IAM-based access controls, least-privilege database user permissions, and audit logging.
- Database as Code — Provision and manage all database infrastructure through version-controlled Infrastructure as Code using Terraform, Ansible, and Bash.
- Migration & Schema Change Management — Design and execute zero-downtime database migrations and backward-compatible schema changes.
- Observability & Monitoring — Instrument all database layers with the metrics, alerting, and logging needed to provide complete visibility into database health, performance, and access patterns.
- Developer Enablement — Partner with application engineering teams to establish and enforce data modelling standards, query design guidelines, ORM best practices, and migration conventions.
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