Ruby Labs

Software Engineer

• Lead the development and delivery of new mobile product features.
• Maintain and improve the existing React Native codebase, performance, and stability.
• Define and evolve mobile architecture, system design, and technical strategy.
• Partner with backend, product, and design teams to shape solutions that scale.
• Drive reliability, performance, and observability standards on mobile.
• Own production debugging, incident investigation, and root cause analysis.
• Guide improvements in build systems, CI/CD, releases, testing, and app store deployments.
• Mentor engineers and foster a culture of quality, ownership, and execution.
• Support hiring and help grow a world-class mobile engineering team.
• Champion performance across rendering, navigation, latency, memory, offline behavior, caching, and real-time experiences.
• Lead with accountability for failure cases, API degradation, recovery UX, and resilience.

Lead React Native Developer

• Deliver new mobile product features with strong execution and attention to detail.
• Maintain and improve the React Native codebase, performance, and stability.
• Integrate with backend APIs, caching layers, and real-time services.
• Debug production issues, investigate edge cases, and ship fixes quickly.
• Implement crash reporting and performance observability (Sentry, tracing, logs, metrics).
• Optimize app performance across rendering, navigation, memory usage, latency, and offline behavior.
• Write clean, maintainable code with a strong understanding of software fundamentals.
• Contribute to technical discussions, planning, documentation, and delivery decisions.
• Support improvements to builds, releases, testing, and app store deployments.

React Native Developer – Mid-Senior

React Native Developer – Mid–Senior

Backend Engineer

• 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
• 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
• 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
• Define and monitor database health metrics (latency, replication lag, storage, IOPS)
• Participate in incident analysis related to data performance or availability

Senior Database Engineer

• 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
• Analyze and optimize slow queries and production metrics
• 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
• Define and monitor database health metrics (latency, replication lag, storage, IOPS)
• Participate in incident analysis related to data performance or availability

• FullStack Development: Take an active, hands-on role in developing complex features and modules using Next.js for the frontend and NodeJS for the backend.
• Quality Assurance: Enforce best practices in coding, testing, caching, and performance monitoring to ensure a robust and scalable application.
• Security: Design and implement comprehensive security measures at the application, infrastructure, and data levels.
• Analytics & Optimization: Collaborate closely with the product team to integrate analytics systems and conduct A/B tests to enhance the user experience.
• Innovation: Research and integrate emerging technologies, particularly AI-driven solutions, to improve the product and streamline development workflows.

Senior Full-Stack Engineer, Next.js / Node.js

• 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
• 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
• Participate in incident analysis related to data performance or availability

Senior Full-Stack Engineer – Next.js, Node.js

• Bring 8+ years of overall professional experience, ideally including lead-level experience on the position of Lead Backend Developer.
• Deliver new backend features with a focus on scalability, performance, and reliability.
• Maintain, optimize, and improve existing services and infrastructure.
• Design, deploy, and operate backend services across AWS, Cloudflare, and other environments.
• Implement and evolve monitoring and observability using tools such as Sentry, OpenTelemetry (OTel), logging, alerting, and related platforms.
• Investigate and resolve production issues across distributed systems.
• Write clean, maintainable code aligned with SOLID principles, system design, and backend best practices.
• Lead incident investigations, root cause analysis, and system reliability improvements.
• Contribute to architectural decisions, documentation, and infrastructure planning.
• Collaborate with high standards for communication, ownership, and delivery.

Senior Backend Engineer

Director

• Lead the company's strategic growth by developing and executing initiatives that drive business expansion.
• Oversee cross-functional teams to ensure alignment across engineering, product development, and marketing.
• Drive revenue growth and profitability while optimizing operational expenses.
• Collaborate closely with engineering teams to deliver innovative solutions.
• Ensure product development lifecycle meets market needs and quality standards.
• Oversee marketing campaigns and utilize data analytics to refine growth strategies.

Managing Director

• Oversee day-to-day operations, drive execution, and build a world-class organization.
• Lead the company's strategic growth and develop initiatives that drive business expansion.
• Collaborate with cross-functional teams in executing complex strategic initiatives.
• Drive revenue growth and profitability while optimizing operational expenses.
• Oversee the product development lifecycle, ensuring adherence to market needs.