Senior Software Engineer: Autonomous DB Optimisation (Go)

Cast AI; Województwo mazowieckie; Remote; PLN 319,000 - 441,000; Full time

Benefits offered by this job

Remote-first

Equity options

Global team

Fast feedback and short delivery Cy

Personal development time (10%)

Learning budget

Annual hackathon

Team events budget

Equipment budget

Additional days off

Job summary

CAST AI is seeking a Senior Software Engineer for the Database Optimisation team to build an autonomous database administrator. You’ll design and implement the Database Gateway (Rust) and the Database Agent (Go), delivering reliable recommendations and safe validation for production workloads.

You will shape architecture, influence roadmap, and collaborate with cross-functional teams across Go and Rust services, focusing on correctness and performance.

Qualifications

• Strong software engineering fundamentals with clean abstractions.
• Production Go services experience.
• Deep PostgreSQL or MySQL knowledge.
• Understanding database clients, drivers, and wire protocols.
• Strong debugging and performance-tuning skills.
• Experience with query profiling, index design, and tuning beyond ORM.
• English written and spoken fluency.
• Proactive and adaptable in a fast-moving environment.
• Comfort with ambiguity and contributing to technical direction.

Responsibilities

• Design, build and operate the Database Gateway.
• Develop high-performance services in Go and Rust.
• Work on database caching and rate limiting.
• Build the Database Agent’s recommendation engine.
• Create safe validation of recommendations before apply.
• Debug complex production issues across gateway, agent, DB systems.
• Collaborate with product and engineering on problems without established solutions.

Skills

Go production services

PostgreSQL/MySQL

Database tuning

Debugging & performance

Query profiling

Index design

Design to production

English communication

Ambiguity handling

Proactive teamwork

Job description

CAST AI is seeking a Senior Software Engineer for the Database Optimisation team to build an autonomous database administrator. You’ll design and implement the Database Gateway (Rust) and the Database Agent (Go), delivering reliable recommendations and safe validation for production workloads.

You will shape architecture, influence roadmap, and collaborate with cross-functional teams across Go and Rust services, focusing on correctness and performance.