About DaCodes At DaCodes, we build high-impact software solutions for startups and global companies across LATAM and the U.S. We work with senior teams who value ownership, technical excellence, and high-quality engineering standards. Role Overview We are looking for a Senior Backend Engineer with a strong focus on integrations, capable of designing, implementing, and maintaining robust, scalable, and secure backend systems, primarily using Node.js, APIs, and event-driven architectures. This is not a low-code configuration role. It requires deep understanding of backend engineering, protocols, concurrency, and security. Why this role is interesting Work on complex backend systems and real-world integrations (SaaS, APIs, ERPs) Solve challenges around scalability, reliability, and distributed systems Collaborate with a highly senior team with strong technical ownership Work directly with U.S.-based clients and products with real impact What You’ll Do Design and build scalable backend services using Node.js Develop and maintain robust, secure APIs Work on integrations between SaaS platforms, ERPs, and internal systems Implement event-driven flows (webhooks, retries, idempotency) Contribute to authentication and authorization flows (OAuth2, JWT, API keys) Identify and solve performance, concurrency, and scalability challenges Improve observability, logging, and error handling in production Participate in technical decisions and architecture discussions Requirements 4+ years developing backend systems in production, with experience in integrations and distributed architectures. Strong experience with Node.js in production environments Experience building and working with APIs Familiarity with authentication and authorization mechanisms (OAuth2, JWT or similar) Experience integrating with external systems or third-party services Solid understanding of backend fundamentals (performance, scalability, reliability) Advanced English (you’ll work with U.S. clients) Nice to Have (Not Required) Experience with event-driven architectures or webhooks Experience with iPaaS tools (Mulesoft, Workato, Boomi, etc.) Experience integrating with ERPs (NetSuite, SAP, Business Central) Experience with high-concurrency systems Familiarity with CI/CD practices How we work Remote-first culture High ownership and autonomy Focus on clean, maintainable, production-grade code Collaborative, senior-level environment Benefits 🚀 Work with global brands and disruptive startups . 🏡 Remote work / Home office . 📍 If a hybrid or on-site model is required, you will be informed from the first session. ⏳ Work schedule aligned with the assigned project/team . 📅 Monday to Friday schedule . ⚖️ Legal benefits (Applicable for Mexico) . 🎉 Day off on your birthday . 🏥 Private health insurance (Applicable for Mexico) . 🛡️ Life insurance (Applicable for Mexico) . 🌎 Multicultural teams . 🎓 Access to courses and certifications . 📢 Meetups with industry experts and top universities . 📡 Virtual networking events and interest groups . 📢 English classes . 🏆 Opportunities within our different business lines . 🏅 Proudly certified as a Great Place to Work .