Senior Backend Developer | Remote | LATAM Only | 85152

About us:At Remote Talent LATAM, we connect top Latin American talent with leading U.S. marketing agencies. We guide businesses and candidates through every step of the hiring process, ensuring the perfect match in skills, culture, and goals. While we’re not direct employers, we act as a trusted partner, bridging the gap between exceptional talent and growing opportunities.Our ClientOur client is a U.S.-based tech boutique building high-scale custom software solutions for clients across industries. Their current flagship project is a large-scale Shopify integration. The team is small, highly technical, and built on years of working together. They move fast, own their work end-to-end, and expect everyone on the team to do the same.About the RoleOur client is looking for a Senior Backend Developer to take real ownership of backend systems in a high-throughput, multi-tenant environment. This is a hands-on role at the core of a demanding production system, you'll work across service design, concurrency, database architecture, and Shopify integrations while contributing to an ongoing infrastructure migration from Railway to Azure. Their current backend is primarily Go and TypeScript, but they value engineering fundamentals over language loyalty. If you've built reliable, scalable systems in Go, Python, Node.js, Java, Kotlin, or Rust and you understand what it takes to keep a high-throughput distributed system running, we want to talk to you.Key ResponsibilitiesDesign and build backend services, APIs, and async background workers for a high-volume, multi-tenant platformOwn system design decisions and contribute to architecture discussions with a small, senior teamWork directly with Shopify APIs as part of a large-scale merchant integrationManage and optimize PostgreSQL databases, including connection pooling and query performanceContribute to the migration of infrastructure from Railway to AzureIdentify and resolve performance bottlenecks in a system processing millions of daily transactionsWrite clean, well-documented, testable code and participate in code reviewsUse AI-assisted development tools to improve speed and quality without compromising engineering judgmentRequirements5+ years of backend development experienceProduction experience in one or more of: Go, TypeScript/Node.js or PythonStrong understanding of concurrency models and how to build systems that scale under loadDeep knowledge of PostgreSQL, including schema design, query optimization, and connection managementExperience with Redis for caching and async/background processing patternsHands-on experience with GraphQL API designSolid system design fundamentals: multi-tenant architectures, distributed systems, event-driven patternsFamiliarity with Docker; Kubernetes experience is a plusExperience with cloud infrastructure, particularly Azure or a comparable providerExcellent communication skills and professional English: this role interfaces directly with internal teams and clientsSelf-directed and proactiveNice to HaveExperience with Shopify APIs, custom app development, or large-scale merchant integrationsGo experience specifically, given the current primary stackBackground working in a consultancy or client-facing engineering environmentFamiliarity with Railway or similar modern infrastructure platformsExperience with Bun or other emerging JavaScript runtimesKnowledge of observability tooling and production monitoring practicesBenefits 🕘 Working hours: 9:00 AM – 5:00 PM. 💵 Salary: $4,500 USD. This position is only open to candidates residing in Latin American (LATAM) countries, such as: 🇦🇷 🇧🇷 🇨🇱 🇨🇴 🇨🇷 🇩🇴 🇪🇨 🇸🇻 🇬🇹 🇭🇳 🇲🇽 🇳🇮 🇵🇦 🇵🇾 🇵🇪 🇺🇾 🇻🇪❌ Applications from candidates outside LATAM (including the U.S. and other regions) will not be considered.📄 Resumes must be submitted in English.🚫 Applications that do not meet these criteria will be automatically rejectedOriginally posted on Himalayas