Sr. Backend Developer

As a Sr. Backend Engineer you will: - Architect and develop high-performance backend services using NestJS, ensuring scalability and maintainability - Design and optimize PostgreSQL database schemas and query performance - Implement complex business logic and integration patterns for financial service workflows - Create and maintain RESTful APIs with exceptional performance characteristics - Develop robust data modeling strategies that support complex financial service configurations - Lead backend system design and technical decision-making - Leverage AWS cloud services to build scalable and reliable infrastructure - Mentor junior engineers and contribute to the overall engineering team culture - Implement comprehensive testing strategies, including unit and integration testing - Establish and maintain backend observability and monitoring infrastructure - Collaborate closely with frontend, product, and design teams to ensure seamless system integration You'll be a great fit if you have: - 7+ years of professional JavaScript development experience - 7+ years of professional Node.js development experience - Extensive experience with NestJS framework - 6+ years of professional experience with PostgreSQL and relational database design - Fluency in English & Spanish (Must). The team primarily communicates in Spanish, so strong written and verbal Spanish skills are essential. - Proven track record of designing scalable, high-performance backend systems - Deep understanding of TypeScript and advanced JavaScript patterns - Strong experience with RESTful API design and implementation - Expertise in database optimization and performance tuning - Comprehensive knowledge of backend testing methodologies - Substantial AWS cloud services experience, including: - Amazon EC2 - Amazon RDS - AWS Lambda - Amazon S3 - AWS CloudWatch - Infrastructure as Code (CloudFormation or Terraform) - Experience with microservices architecture - Strong debugging and systems troubleshooting skills Bonus points if you have: - Knowledge of the financial services domain - CI/CD pipeline configuration experience - Docker experience - Message queue systems (RabbitMQ, Kafka) experience - Backend observability tools experience Need only Argentina candidates who speak both fluent English and Spanish Originally posted on Himalayas