Database Administrator (DBA)

About the role

Through proprietary software and AI, along with a focus on customer delight, Sleek makes the back-office easy for micro SMEs. We give Entrepreneurs time back to focus on what they love doing - growing their business and being with customers. With a surging number of Entrepreneurs globally, we are innovating in a highly lucrative space. We operate 3 business segments: Corporate Secretary : Automating the company incorporation, secretarial, filing, Nominee Director, mailroom and immigration processes via custom online robots and SleekSign. We are the market leaders in Singapore with ~5% market share of all new business incorporations Accounting & Bookkeeping : Redefining what it means to do Accounting, Bookkeeping, Tax and Payroll thanks to our proprietary SleekBooks ledger, AI tools and exceptional customer service FinTech payments : Overcoming a key challenge for Entrepreneurs by offering digital banking services to new businesses Sleek launched in 2017 and now has around 15,000 customers across our offices in Singapore, Hong Kong, Australia and the UK. We have around 500 staff with an intact startup mindset. We have recently raised Series B financing off the back of >70% compound annual growth in Revenue over the last 5 years. Sleek has been recognised by The Financial Times, The Straits Times, Forbes and LinkedIn as one of the fastest growing companies in Asia. Backed by world-class investors, we are on track to be one of the few cash flow positive, tech-enabled unicorns based out of Asia Pacific. We are looking for an experienced and hands-on Database Administrator (DBA) to join our growing Platform Engineering team. Mission: You will own the design, deployment, performance, availability, security, and reliability of our database fleet across PostgreSQL, AWS RDS, Aurora, MongoDB, and MariaDB. You will work closely with engineering, data, and DevOps teams to ensure our databases are highly performant, scalable, and resilient to support business-critical workloads. Key responsibilities: Administer, monitor, and maintain production database environments across PostgreSQL, AWS RDS, Aurora, MongoDB, and MariaDB. Design, provision, and manage highly available and fault-tolerant database architectures on AWS (RDS, Aurora clusters, Multi-AZ, read replicas). Perform installation, configuration, upgrades, patching, and version migrations of database engines. Plan and execute database migrations (on-prem to cloud, cross-engine, version upgrades) with minimal downtime. Implement and manage backup, restore, point-in-time recovery (PITR), and disaster recovery (DR) strategies; regularly validate recovery drills. Tune database performance - query optimization, indexing strategies, execution plan analysis, vacuum/auto-vacuum tuning, and connection pooling. Capacity planning, sizing, and cost optimization for AWS RDS / Aurora workloads. Set up replication (logical/physical, streaming, MongoDB replica sets, MariaDB Galera/primary-replica) and manage failover. Define and enforce database security best practices - user access, IAM authentication, encryption at rest and in transit, KMS, secrets management, audit logging. Build robust monitoring, alerting, and observability for databases using CloudWatch, Performance Insights, Prometheus/Grafana, or similar tooling. Troubleshoot production incidents - slow queries, locks, replication lag, storage saturation - and drive RCA and permanent fixes. Automate routine DBA operations using scripts (Bash, Python) and Infrastructure as Code (Terraform/CloudFormation). Partner with developers on schema design, data modeling, query reviews, and database best practices. Maintain documentation, runbooks, and standard operating procedures for the database platform. Support compliance requirements (SOC 2, ISO 27001, GDPR) for database systems. Required Skills & Experience: Core DBA: 5+ years of hands-on experience as a Database Administrator in production environments Strong understanding of database internals - storage engines, transactions, isolation levels, locking, MVCC, query planners. Proven experience supporting mission-critical OLTP workloads with high availability requirements. Solid scripting skills in Bash and/or Python for automation. PostgreSQL / Aurora PostgreSQL Deep hands-on expertise with PostgreSQL administration - installation, configuration, tuning, and upgrades. Experience with streaming replication, logical replication, pgBouncer, and partitioning. Strong query tuning skills - EXPLAIN/ANALYZE, indexes (B-tree, GIN, BRIN), vacuum and bloat management. Hands-on experience with Aurora PostgreSQL clusters, reader/writer endpoints, and global databases. AWS RDS & Aurora Strong hands-on experience operating production workloads on AWS RDS and Aurora (MySQL/PostgreSQL). Proficiency with parameter groups, option groups, snapshots, automated backups, and PITR. Experience configuring Multi-AZ, read replicas, cross-region replication, and DR setups. Working knowledge of AWS service

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