Summary: As a Senior Backend Engineer, you will design, develop, and maintain scalable backend services and APIs using Node.js and NestJS, lead technical discussions, and mentor junior developers in a dynamic startup environment. Highlights: 1. Design and develop robust, scalable backend services using Node.js and NestJS 2. Lead technical discussions and mentor junior developers 3. Foster a culture of continuous learning and improvement Hello! We’re **Cashea** , and we're on a mission to bring **optimism** back to Venezuelans by building innovative financial products. Since our launch in 2022, we've been dedicated to democratizing financial inclusion through cutting\-edge technology. In that time, we've grown to serve over **6 million customers**, developed a range of products for both consumers and merchants, and become a trusted name in Venezuela—winning both minds and hearts . **About the role** As a Senior Backend Engineer, you will design and develop scalable backend services using Node.js and NestJS, create and maintain high\-performance RESTful APIs, and implement automated tests to ensure software quality. You'll manage relational databases, particularly PostgreSQL, collaborate on system design, and actively participate in code reviews to enhance development processes. Additionally, you'll oversee optimal service performance, manage production deployments, and mentor junior developers. You’ll lead technical discussions, establish best practices, and promote a culture of continuous learning and improvement in a dynamic startup environment. **Overall you will...** * Design and develop robust, scalable backend services using Node.js and NestJS (Express) * Create and maintain high\-performance RESTful APIs * Implement automated tests to ensure software quality and reliability * Manage relational databases, preferably PostgreSQL * Collaborate on system design and architecture * Actively participate in code reviews and continuous improvement of our development processes * Ensure optimal service performance and manage production deployments * Handle multiple tasks simultaneously, allowing quick rotation between them in a dynamic startup environment * Mentor junior developers and provide technical guidance to the team * Lead technical discussions and help establish best practices * Share knowledge through pair programming and code reviews * Foster a culture of continuous learning and improvement **Qualifications** * Bachelor's degree in Computer Science or related fields, or equivalent experience and 3\+ years of experience in the field * Solid experience in backend development with Node.js and NestJS (Express) * Proven experience in creating and managing RESTful APIs * Advanced knowledge of relational databases, preferably PostgreSQL * Experience implementing unit and integration tests * Familiarity with design principles and architectural patterns * Experience in deploying services and managing their performance plus independence for feature delivery in a dynamic startup context * Track record of successfully mentoring junior developers * Ability to communicate complex technical concepts clearly * Experience in establishing development standards and best practices * Excellent problem\-solving abilities and analytical thinking * Ability to work in a team and communicate effectively * Self\-taught nature with a strong interest in the latest technological trends **Desirable skills:** * Experience with cloud computing platforms, specifically Google Cloud Platform (GCP) * Knowledge of containers and orchestration, such as Docker and Kubernetes * Experience with messaging and queuing systems like RabbitMQ/Kafka/PubSub * Spanish and English proficiency