Senior Backend Nodejs

- 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 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
- Strong experience with RESTful API design and implementation
- Expertise in database optimization and performance tuning
- Comprehensive knowledge of backend testing methodologies
- 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
- Backend observability tools experience Need only Argentina candidates who speak both fluent English and Spanish 995
- Backend Developer (Java)
· Senior
· Remoto
· ARG Disclaimer – Lectura obligatoria: Compromiso y dedicación Este rol requiere dedicación full-time, con prioridad clara sobre los proyectos de Darwoft durante el horario laboral establecido. No es compatible con otros compromisos profesionales full-time. Cualquier actividad profesional adicional deberá ser informada previamente y no deberá interferir con las responsabilidades del rol. Sobre Darwoft Darwoft es una software factory dedicada al desarrollo de soluciones de software a medida y a la provisión de servicios de staff augmentation IT para clientes internacionales, con foco principal en Estados Unidos y Latinoamérica. Colaboramos estrechamente con startups y compañías en crecimiento para impulsar productos digitales de alto impacto. Nuestra cultura se define como people-first: priorizamos la cercanía humana, la calidad técnica, el trabajo colaborativo y la construcción de relaciones de largo plazo. Buscamos profesionales que compartan esta visión y deseen generar un impacto real en el negocio de nuestros clientes. Software Engineer Java SR (Relación de Dependencia
- Argentina) Información general
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Ubicación:
Argentina
- Tipo de contrato: Relación de Dependencia.
- Industria / Proyecto: Desarrollo de productos digitales de alto impacto y escala internacional.
- Zona Horaria: Horario laboral de Argentina Sobre el Rol /

About the Role
Buscamos un Software Engineer Java Senior con mentalidad de owner y una sólida trayectoria técnica para sumarse a nuestro equipo de