Senior Backend Developer| Remote| LATAM Only| 85152

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Design and build backend services, APIs, and async background workers for a high-volume, multi-tenant platform
Own system design decisions and contribute to architecture discussions with a small, senior team
Work directly with Shopify APIs as part of a large-scale merchant integration
Manage and optimize PostgreSQL databases, including connection pooling and query performance
Contribute to the migration of infrastructure from Railway to Azure
Identify and resolve performance bottlenecks in a system processing millions of daily transactions
Write clean, well-documented, testable code and participate in code reviews
Use AI-assisted development tools to improve speed and quality without compromising engineering judgment

5+ years of backend development experience
Production experience in one or more of: Go, TypeScript/Node.js or Python
Strong understanding of concurrency models and how to build systems that scale under load
Deep knowledge of PostgreSQL, including schema design, query optimization, and connection management
Experience with Redis for caching and async/background processing patterns
Hands-on experience with GraphQL API design
Solid system design fundamentals: multi-tenant architectures, distributed systems, event-driven patterns
Familiarity with Docker; Kubernetes experience is a plus
Experience with cloud infrastructure, particularly Azure or a comparable provider
Excellent communication skills and professional English: this role interfaces directly with internal teams and clients
Self-directed and proactive

5+ years of backend development experience
Production experience in one or more of: Go, TypeScript/Node.js or Python
Strong understanding of concurrency models and how to build systems that scale under load
Deep knowledge of PostgreSQL, including schema design, query optimization, and connection management
Experience with Redis for caching and async/background processing patterns
Hands-on experience with GraphQL API design
Solid system design fundamentals: multi-tenant architectures, distributed systems, event-driven patterns
Familiarity with Docker; Kubernetes experience is a plus
Experience with cloud infrastructure, particularly Azure or a comparable provider
Excellent communication skills and professional English: this role interfaces directly with internal teams and clients
Self-directed and proactive
🕘 Working hours: 9:00 AM – 5:00 PM.
💵 Salary: $4,500 USD.

Experience with Shopify APIs, custom app development, or large-scale merchant integrations
Go experience specifically, given the current primary stack
Background working in a consultancy or client-facing engineering environment
Familiarity with Railway or similar modern infrastructure platforms
Experience with Bun or other emerging JavaScript runtimes
Knowledge of observability tooling and production monitoring practices