Cast AI
Cloud-native and AI infrastructure
SeniorSoftwareEngineer–DatabaseOptimizer
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optimal for Senior candidates.
“Senior Software Engineer – Database Optimizer at Cast AI. Skills: PostgreSQL, MySQL, Go, C++. Design database optimization services. Build database optimization services”
What You'll Achieve.
Deliver measurable database cost savings; Identify optimization opportunities
Industry & Context.
Problem-solving skills; Troubleshoot complex issues; Proactive problem-solving mindset
Residing in European countries: Bulgaria, Croatia, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, Slovenia, and Ukraine
What They're Looking For.
Must Have
Experience working with and troubleshooting PostgreSQL and/or MySQL in production environments, Experience troubleshooting database-related issues, programming skills in Go and/or C++, problem-solving skills, written and verbal communication skills in English, Ability to work independently and collaboratively within a team, Startup mindset
Nice to Have
Knowledge of implementation details around transactions, wire protocols, WAL, indexes, query planning, and other fundamental database features
What You'll Do.
Design database optimization services
Build database optimization services
Operate database optimization services
Develop features for query analysis
Develop features for index recommendations
Develop features for automated performance tuning
Extend integrations with PostgreSQL
Extend integrations with MySQL protocols
Extend integrations with cloud database services
Maintain integrations with PostgreSQL
Maintain integrations with MySQL protocols
Maintain integrations with cloud database services
Implement query parsing
Implement plan analysis
Implement recommendation algorithms
Develop monitoring systems
Develop alerting systems
Participate in design reviews
Participate in code reviews
Participate in customer deep-dives
How You'll Work.
Team & Collaboration
Collaborate with product; Collaborate within a team; Collaborate with cloud experts; Collaborate with innovators
Communication Scope
Written communication skills in English; Verbal communication skills in English
Full Job Description
Why Cast AI? Cast AI is an automation platform that operates cloud-native and AI infrastructure at scale. By embedding autonomous decision-making directly into Kubernetes and cloud environments, Cast AI continuously optimizes performance, reliability, and efficiency in production. The old way doesn't work. As Kubernetes and AI environments grow, manual decisions don’ t. Cast AI replaces tickets, alerts, and manual tuning with continuous automation that adapts infrastructure as conditions change. Efficiency and cost savings follow naturally from that automation. Over 2,100 companies already rely on Cast AI, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS. Global team, diverse perspectives We're headquartered in Miami, but our impact is international. We take a global and intentional approach to diversity. Today, Cast AI operates across 34 countries spanning Europe, North America, Latin America, and APAC, bringing a wide range of perspectives into how we build and lead. Unicorn momentum In January 2026, we achieved unicorn status with a strategic investment from Pacific Alliance Ventures, the corporate venture arm of Shinsegae Group (a $50+ billion Korean conglomerate). Our valuation now exceeds $1 billion, and we're just getting started. Join us as we build the future of autonomous infrastructure. About the role Databases are notoriously hard to optimize—with 350+ configuration parameters in PostgreSQL alone, even experienced engineers struggle to find the right settings. Have you ever dreamed about a database that continuously self-optimizes itself in the background, so you can focus on what really matters: building great products? Sometimes your queries slow down and it's not immediately clear why. Imagine a system that proactively detects performance degradation, analyzes the root cause, and automatically improves your queries and indexes for you—creating pull requests with the exact optimizations needed. CAST AI is seeking a skilled
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