Senior Backend Engineer

Responsibilities

• Design, build, and evolve scalable backend services and APIs, primarily using Node.js, TypeScript, and Express.js.
• Own technical solutions end-to-end, from design and implementation through deployment, observability, and production support.
• Contribute to the evolution of our backend architecture and participate actively in architectural and technical design decisions.
• Identify, prioritize, and address technical debt, balancing long-term maintainability with product delivery.
• Apply solid software design principles and patterns, choosing appropriate solutions based on context and trade-offs rather than applying patterns by default.
• Design clear application boundaries and separation of concerns across services, business logic, and persistence layers.
• Design and optimize PostgreSQL schemas, queries, indexes, migrations, and transactional workflows.
• Build reliable financial workflows with appropriate strategies for idempotency, concurrency, consistency, retries, failure handling, and reconciliation.
• Design and maintain REST APIs and integrations with internal systems and external providers.
• Design asynchronous and event-driven workflows when appropriate.

Languages