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

Required Skill Profession

Computer Occupations

📌 Sr. Backend Developer (Rosario)
🏢 ALIANCERS
📍 Rosario