**Senior Fullstack Software Engineer** **Key Responsibilities** * Design, develop, and maintain scalable, reliable, and efficient fullstack applications using **ReactJS, NodeJS, NestJS, MongoDB, and PostgreSQL**. * Ensure system infrastructure reliability and efficiency. * Optimize application performance for maximum efficiency and scalability. * Implement and oversee continuous monitoring and alerting systems. * Collaborate with the development team to identify and resolve performance bottlenecks. * Conduct root cause analysis for production errors and incorporate feedback to prevent future incidents. * Develop and execute unit tests to ensure code quality and reliability. * Use **Git** for version control and team collaboration. **Required Skills and Qualifications** * Solid experience (**minimum of 7 years**) in fullstack development with **ReactJS and NodeJS/NestJS**. * Proficiency in developing and optimizing applications using **MongoDB and PostgreSQL**. * Experience with software engineering best practices such as **SOLID and CLEAN**. * Familiarity with **SaaS solutions and platforms**. * Knowledge of **unit testing** libraries and methodologies. * Experience with **Git** for version control. * Strong understanding of **monitoring** tools and incident response. * **Advanced proficiency in English.** **Preferred Qualifications** * Knowledge of **containerization and orchestration** (Docker, Kubernetes). * Prior experience with **AI development tools**. * Familiarity with **event streaming platforms**, such as **Kafka**. **What We Offer** * **Competitive salary and benefits.** * A positive and stimulating work environment, with a culture based on integrity, respect, and collaboration. * A dynamic and rapidly growing company where you can grow as much as your vision and curiosity allow. * **Flexible** hybrid/remote work arrangement. Job type: Full-time CLT Salary: R$12,000.00 \- R$25,000.00 per month Benefits: * Health insurance * Life insurance * Transportation allowance