Senior Software Engineer – Database Optimizer

Why Cast AI?Cast AI is the leading Application Performance Automation (APA) platform, enabling customers to cut cloud costs, improve performance, and boost productivity – automatically.Built originally for Kubernetes, Cast AI goes beyond cost and observability by delivering real-time, autonomous optimization across any cloud environment. The platform continuously analyzes workloads, rightsizes resources, and rebalances clusters without manual intervention, ensuring applications run faster, more reliably, and more efficiently.Headquartered in Miami, Florida, Cast AI has employees in more than 32 countries worldwide and supports some of the world’s most innovative teams running their applications on all major cloud, hybrid, and on-premises environments. Over 2,100 companies already rely on Cast - from BMW and Akamai to Hugging Face and NielsenIQ.What’s next? Backed by our $108M Series C, we’re doubling down on making APA the new standard for DevOps and MLOps, and everything in between.About the roleCast AI is seeking a skilled senior software engineer with deep expertise in databases. It's more about understanding database underlying technology than just knowing how to use it.Knowing the implementation details on transactions, wire protocol, WAL, indexes and many other fundamental database features enables us to build a product around it. The candidate will be able to work on a greenfield project with a high impact on the outcome.Requirements:Strong knowledge in one of the following databases: PostgreSQL, MySQLExperience as a Database Administrator or in a role with significant hands-on work with databasesStrong programming skills in Go and/or C++Strong problem-solving skills and the ability to troubleshoot complex issues in a production environmentExperience working with and developing performant and robust caching would be an advantageStrong written and verbal communication skills in EnglishAbility to work independently and collaboratively within a teamStartup mindset: adaptable, proactive, and comfortable with ambiguityA proactive, problem-solving mindset with a “yes we can” attitude.Here are some of the tools we use daily:Mostly Golang with C++ in the most critical data pathwaysExtending Envoy with custom network filtersClickHouse and PostgreSQL for business metricsGRPC and REST APIsGitLab CI with ArgoCD as our GitOps CD enginePrometheus, Grafana, Loki, and Tempo for observabilityDeployment charts are written in Helm.What’s in it for you?Competitive salary (€6,500 - €9,000 gross, depending on the level of experience)Enjoy a flexible, remote-first global environment.Collaborate with a global team of cloud experts and innovators, passionate about pushing the boundaries of Kubernetes technology.Enjoy a flexible, remote-first global environment.Equity options.Private health insurance.Get quick feedback with a fast-paced workflow. Most feature projects are completed in 1 to 4 weeks.Spend 10% of your work time on personal projects or self-improvement. Learning budget for professional and personal development - including access to international conferences and courses that elevate your skills.Annual hackathon to spark new ideas and strengthen team bonds.Team-building budget and company events to connect with your colleagues.Equipment budget to ensure you have everything you need.Extra days off to help maintain a healthy work-life balance.