Database Engineer (PostgreSQL)

Навыки

• AWS
• ClickHouse
• CRM-системы
• Elasticsearch
• Мониторинг и observability
• Ответственность за результат
• PostgreSQL

О компании и продукте

• Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/
• We are building a high-scale payment orchestration system that processes millions of financial transactions every month across multiple payment providers, regions, and products.
• Our platform operates at the intersection of payments, billing, subscriptions, analytics, and internal CRM tooling, where data correctness, performance, and reliability are mission-critical. As our transaction volume and customer base continue to grow rapidly, our database layer has become one of the most important parts of the system.
• We are looking for a strong Database Engineer who will own, scale, and evolve our data infrastructure, ensuring it remains fast, reliable, and ready for long-term growth.

Задачи

• Database Ownership & Scalability
• Own and operate AWS Aurora (PostgreSQL) in a high-load production environment
• Design and evolve schemas for large transactional domains (payments, customers, subscriptions, events)
• Implement and maintain
• Table partitioning strategies (time-based, tenant-based, hybrid)
• Advanced indexing (B-Tree, GIN, partial indexes)
• Query optimization and execution-plan tuning
• Handle databases with millions of new records per month while maintaining predictable performance
• Analyze and optimize slow queries and production metrics
• Identify and resolve
• Lock contention
• Vacuum / autovacuum issues
• Connection pool saturation
• Long-running or inefficient queries
• Proactively prevent performance regressions as data volume grows
• Search & Internal Tools
• Design high-performance search solutions for large operational datasets used in internal CRM tools
• Implement efficient search strategies
• Balance flexibility, correctness, and performance at scale
• Analytics & Logging
• Work with event and log data pipelines, including Tinybird / ClickHouse-based analytics
• Decide which data belongs in transactional databases vs analytical stores
• Enable fast, real-time insights for product, finance, and operations teams
• Reliability & Operations
• Ensure data integrity and consistency in financial workflows

Требования

• 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
• Transactions, isolation levels, and locking
• Experience working with AWS-based infrastructure, ideally AWS Aurora
• Ability to independently investigate and resolve complex performance issues
• Strong Plus
• Experience in payments, billing, fintech, or financial systems
• Familiarity with analytical databases (ClickHouse, Tinybird, or similar)
• Familiarity with OpenSearch or similar, including data ingestion from PostgreSQL
• Experience designing data models for multi-tenant systems
• Understanding of event-driven architectures and data pipelines
• AWS certifications (e.g., Solutions Architect, Database Specialty)
• LOCATION
• Ruby Labs operates within the CET (Central European Time) zone
• This ensures optimal collaboration and communication during working hours

Условия

• Discover the perks of being part of our vibrant team!
• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities
• Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere
• Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Как проходит отбор

• After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received
• If we see a potential fit, we proceed with the following steps
• Recruiter Screening (40 minutes)
• Technical Interview (60 minutes)
• Final Interview (60 minutes)
• LIFE AT RUBY LABS
• At Ruby Labs, we move fast, aim high, and expect the same from our team
• We’re not here to play small—we’re here to build, grow, and win
• That means we look for people who are ambitious, driven, and ready to give their best every single day
• This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle
• If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen
• Here, effort is matched with reward
• We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success

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