Heidi - Senior Application Database Engineer

Sydney, New South Wales, Australia - Hybrid+ Equity1mo ago

In Office Senior APAC Digital Health Cloud Computing Senior Data Engineer MongoDB SQL Python Terraform AWS

Requirements

• 5+ years of experience with MongoDB in production, including Atlas-managed clusters • Strong ability to design schemas around application access patterns rather than relational conventions • Deep understanding of indexing, query planning, aggregation pipelines, and MongoDB operational fundamentals • Solid experience with Amazon RDS or other relational databases, including schema design and query optimisation • Strong SQL skills including query optimisation, indexing, and schema design for relational workloads • Proficiency in Python for scripting, automation, and data migration tooling • Experience planning or executing database migrations across technology boundaries • Proficiency with Terraform for managing cloud database infrastructure • Hands-on experience with AWS and Azure networking as it relates to private database connectivity • Comfort operating with high autonomy in a fast-moving environment • Strong written communication and documentation habits • Experience with Atlas Terraform provider • Familiarity with OIDC and workforce identity federation in Atlas • Background in multi-region data architecture • Experience in healthcare or regulated industries • The Way We Work • The Way We Work • 1. Build to Last • 1. Build to Last • We design for safety and reliability so clinicians, patients, and our teams can trust what we build every day. • 2. Own Your Practice • Ideas rise on merit, not title, and everyone shares responsibility for the standards we set together. • 3. Move Fast, Stay Steady • We move quickly but never at the cost of trust. Progress only matters if people can depend on what we make. • 4. Make Others Better • Honest feedback, steady support, and shared growth keep our teams improving together.

Responsibilities

• Own MongoDB Atlas cluster configuration and management across production, staging, and development environments spanning multiple regions globally across AWS and Azure • Lead schema and data model design across services, making deliberate choices around embedding, referencing, denormalization, and aggregation patterns • Own index strategy, query performance analysis, and aggregation pipeline design across all collections • Evaluate and plan database technology decisions including when MongoDB is the right fit and when a relational store like Amazon RDS is more appropriate • Design and execute data migrations between database systems as the platform evolves, writing Python tooling to support migration pipelines and data transformation • Manage all Atlas infrastructure through Terraform including cluster sizing, compute auto-scaling, private endpoints, and access control • Design and maintain OIDC authentication and workforce identity federation across Atlas projects • Own database user management, credential rotation, and access control policies • Detect and remediate infrastructure state drift between Terraform and Atlas configuration • Monitor database performance, identify bottlenecks, and drive optimisation across replica sets and sharded clusters • Partner with backend engineers on schema design, indexing strategies, and query performance • Establish runbooks for operational tasks including failover, scaling events, and incident response • Flexible hybrid working, with 3 days in the office • Monthly $150 AUD benefit to invest in your physical and mental wellbeing • Recharge Days after major milestones and busy periods • A generous personal development budget of $1000 AUD per annum • Become an owner, with shares (equity) in the company, if Heidi wins, we all win • A one-time home office setup contribution • 26 weeks paid parental leave for primary carers, 18 weeks for secondary carers • A fertility support benefit of $10,000 AUD covering IVF, egg freezing or sperm freezing • 10 days per year dedicated to supporting clinicians in maintaining accreditation • The rare chance to create a global impact as you immerse yourself in one of Australia’s leading healthtech startups • If you have an impact quickly, the opportunity to fast track your startup career!