Senior Fullstack Software Engineer

Accountabilities:

• • Design, develop, maintain, and continuously improve scalable, reliable, and efficient fullstack applications using ReactJS, NodeJS, NestJS, MongoDB, and PostgreSQL.
  • Build high-quality frontend and backend solutions while ensuring smooth integration across application layers.
  • Optimize application performance, scalability, and resource efficiency to support reliable platform growth.
  • Contribute to the reliability and efficiency of system infrastructure and help identify potential areas for improvement.
  • Implement and maintain continuous monitoring, alerting, and observability practices to proactively identify system issues.
  • Collaborate with engineering teams to diagnose and resolve performance bottlenecks and production incidents.
  • Conduct root cause analysis of production errors and implement corrective measures to prevent recurring issues.
  • Develop and maintain unit tests and apply software engineering best practices to ensure code quality, maintainability, and reliability.
  • Use Git effectively for source control, code collaboration, and development workflows.
  • Contribute to technical decisions and continuous improvements across SaaS and platform-based solutions.

  Requirements:

  • At least 5 years of professional experience in fullstack software development, with strong hands-on experience in ReactJS and NodeJS/NestJS.
  • Strong proficiency in developing, maintaining, and optimizing applications using MongoDB and PostgreSQL.
  • Solid understanding and practical application of software engineering principles such as SOLID and Clean Code.
  • Experience working with SaaS products and/or platform-based solutions.
  • Knowledge of unit testing practices, libraries, and methodologies.
  • Strong experience with Git and collaborative software development workflows.
  • Good understanding of monitoring, observability, incident response, and production troubleshooting.
  • Strong English communication skills, both written and verbal.
  • Ability to investigate complex technical problems, identify root causes, and implement sustainable solutions.
  • Collaborative mindset, strong ownership, analytical thinking, and a commitment to engineering quality.
  • Knowledge of Docker and Kubernetes is a plus.
  • Previous experience with AI development tools is desirable.
  • Experience with event-streaming technologies such as Kafka is an additional advantage.

  Benefits:

  • Remote work opportunity from São Paulo, Brazil.
  • Contractor employment model.
  • Opportunity to work within a data and technology-driven environment serving businesses across Latin America and the Caribbean.
  • Exposure to modern fullstack technologies, SaaS and platform solutions, cloud-native practices, and scalable systems.
  • Opportunity to contribute to products where reliability, performance, and data-driven decision-making are core priorities.
  • Collaborative engineering environment focused on innovation, continuous improvement, and technical excellence.
  • Inclusive workplace committed to equal employment opportunities and a respectful, discrimination-free environment.