Summary: Join a high-impact team as a Senior Backend Engineer focusing on designing, building, and maintaining scalable Node.js services in AWS for a fast-growing healthcare technology company. Highlights: 1. Design, build, and maintain scalable Node.js services 2. Develop and optimize microservices in AWS production environments 3. Contribute meaningfully to backend platform evolution Become an EXpert as a Senior Backend Engineer (Node.js \| AWS) At EX Squared LATAM, we partner with leading U.S.\-based technology companies to build scalable, high\-performance systems that power real\-world business operations. We are currently looking for a **Senior Backend Engineer (Node.js)** to join a fast\-growing healthcare technology company. This is a backend\-heavy, 100% hands\-on engineering role within a small, high\-impact team focused on building and evolving distributed cloud\-native systems. **What You’ll Do** * Design, build, and maintain scalable backend services using **Node.js and TypeScript**. * Develop and optimize microservices running in **AWS production environments**. * Implement event\-driven and asynchronous workflows to support high\-performance systems. * Strengthen CI/CD pipelines and contribute to Infrastructure as Code practices. * Improve reliability, monitoring, and fault tolerance across distributed services. * Collaborate with frontend engineers while remaining primarily backend\-focused. * Participate fully in sprint development and deliver production\-ready code. **What You’ll Bring** * 5–8 years of hands\-on software engineering experience. * Strong proficiency in **Node.js, JavaScript, and TypeScript**. * Solid experience working with **AWS in production**. * Experience building **distributed systems and microservices**. * Hands\-on experience with **event\-driven architectures**. * Experience with **CI/CD pipelines and Infrastructure as Code** (Terraform, CloudFormation, or similar). * Strong understanding of scalability, performance optimization, and DevOps practices. * Advanced English proficiency for technical discussions. **Nice to Have** Experience with React or frontend collaboration. Experience with Python in backend services. Experience in startup or high\-growth environments. Exposure to observability and monitoring tools. **Why Join EX Squared?** You will join a collaborative LATAM engineering team working on systems that directly impact patient care in the U.S. healthcare industry. This is an opportunity to contribute meaningfully to backend platform evolution while remaining deeply hands\-on in development.