TL;DR

Senior Database Engineer: Own, scale, and evolve data infrastructure, ensuring it remains fast, reliable, and ready for long-term growth with an accent on designing, operating, and optimizing databases in a high-volume payments environment. Focus on large datasets, complex queries, performance bottlenecks, migrations on massive tables, and analytics pipelines.

Location: Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET.

Company

Ruby Labs is a leading tech company that creates and operates innovative consumer products.

What you will do

Own and operate AWS Aurora (PostgreSQL) in a high-load production environment.
Analyze and optimize slow queries and production metrics, resolving issues like lock contention and connection pool saturation.
Design high-performance search solutions for large operational datasets used in internal CRM tools.
Work with event and log data pipelines, including Tinybird / ClickHouse-based analytics.
Ensure data integrity and consistency in financial workflows.
Plan and execute safe schema changes and migrations on large tables.

Requirements

Strong hands-on experience with PostgreSQL in production.
Experience managing large databases (hundreds of millions of rows or more).
Solid understanding of indexing strategies, query planners, and transactions.
Experience working with AWS-based infrastructure, ideally AWS Aurora.
Ability to independently investigate and resolve complex performance issues.

Nice to have

Experience in payments, billing, fintech, or financial systems.
Familiarity with analytical databases (ClickHouse, Tinybird, or similar).
Experience designing data models for multi-tenant systems.
Understanding of event-driven architectures and data pipelines.
AWS certifications (e.g., Solutions Architect, Database Specialty).

Culture & Benefits

Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
Celebrate and relax on national holidays with paid time off to unwind and recharge.
Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities with a flexible independent contractor agreement.

Hiring process

Recruiter Screening (40 minutes)
Technical Interview (60 minutes)
Final Interview (30 minutes)