TL;DR

Senior Database Engineer (Fintech): Owning, scaling, and evolving the 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 working with 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 across the health, education, and entertainment industries.

What you will do

Own and operate AWS Aurora (PostgreSQL) in a high-load production environment.
Design and evolve schemas for large transactional domains, including payments, customers, subscriptions, and events.
Analyze and optimize slow queries and production metrics to resolve performance issues.
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.

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 execution paths.
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

Remote Work Environment: Work from anywhere, anytime, promoting a healthy work-life balance.
Enjoy unlimited paid time off to recharge and prioritize your well-being.
Celebrate and relax on national holidays with paid time off.
Experience seamless productivity with top-notch Apple MacBooks.
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)