Senior Backend Engineer

Key details

• Design, build, and maintain scalable, reliable backend services that process financial transactions and serve customers across 20+ countries
• Write clean, testable, production-quality code in Go, Python, or Node.js/TypeScript; participate actively in design and code reviews
• Build and consume RESTful and GraphQL APIs; design inter-service communication using gRPC, message queues, and event-driven architectures
• Design and optimize relational and non-relational database schemas (PostgreSQL, MongoDB, Redis) for correctness, performance, and scale
• Own backend features end-to-end — from scoping and technical design through deployment, monitoring, and iteration
• Implement security best practices: authentication, authorization, input validation, and data protection across distributed services
• Integrate LLM API calls (e.g., OpenAI, Anthropic) into backend services as product features such as spend categorization, document parsing, or natural language workflows, ensuring reliability, observability, and cost-efficiency
• Build backend pipelines that consume AI-generated outputs safely: validate structured outputs, handle fallback scenarios, and design graceful degradation when AI services are unavailable or return low-confidence results
• Collaborate with AI and data science teams to integrate model outputs into backend APIs, bridging experimental AI work and production systems
• Use AI coding tools (GitHub Copilot, Claude, Cursor, etc.) fluently as part of everyday development workflow
• Instrument services with structured logging, distributed tracing, and metrics for full operational visibility
• Participate in on-call rotation; respond to production incidents and contribute to post-incident reviews
• Contribute to CI/CD pipeline improvements, testing infrastructure, and deployment practices
• Work closely with engineering, product, compliance, and data teams across multiple time zones and regions, communicating in both English and Spanish or Portuguese as the situation requires
• Contribute to a globally distributed engineering culture through thorough documentation, async design reviews, and thoughtful pull request feedback
• Bring regional perspective to product and engineering conversations, especially for LATAM customers
• Company mission
• Information not specified