Summary: Seeking a Senior Integration Engineer to design and build robust integration systems and backend services, focusing on reliability, scalability, and performance. Highlights: 1. Design and build integration systems and backend services 2. Hands-on engineering with strong ownership 3. Work with Node.js / TypeScript and Python **Integration Engineer (Node.js / Python) – Senior** ---------------------------------------------------- Remote (Brazil / Argentina) \| Hybrid (São Paulo) Full\-time English C1\+ About the role We’re looking for a **Senior Integration Engineer** to design and build integration systems that connect complex platforms and services in real\-world environments. You’ll work on backend systems that handle data exchange, APIs, and integrations with external platforms, ensuring reliability, scalability, and performance. This is a **hands\-on engineering role with strong ownership**, focused on building systems that are critical to day\-to\-day operations. What you’ll do * Design and build **integration systems and backend services** * Develop and maintain APIs (REST / GraphQL) * Integrate with third\-party systems and external platforms * Handle asynchronous workflows, queues, and distributed systems * Monitor, debug, and improve system reliability * Participate in incident resolution and system improvements * Collaborate with engineering and product teams * Contribute to code reviews and technical discussions What we’re looking for * 5\+ years of experience in **backend engineering** * Strong experience with: + Node.js / TypeScript + Python * Experience building and maintaining APIs * Solid understanding of: + async patterns + queues and messaging systems + error handling and observability * Experience with databases: + PostgreSQL + MongoDB * Strong problem\-solving skills and ownership mindset * **Fluent English (C1\+), required for daily communication)** Nice to have * Experience designing **GraphQL APIs** * Experience working on **integration\-heavy systems** * Experience in high\-growth or startup environments * Experience in regulated industries (healthtech, fintech, etc.) Work model * Remote (Brazil or Argentina) * Hybrid option in São Paulo (Brazil) * Full\-time Note This role requires hands\-on experience building and maintaining backend systems in production environments. We are looking for engineers who take ownership of what they build and are comfortable working with real\-world complexity. How to apply Please apply directly following the link. If it does not suit you, please share it with your colleagues. Thanks!