Senior Backend Developer

Job not on LinkedIn

🕒 September 17, 2025

🇦🇷 Argentina – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 63%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Aliancers

WebsiteLinkedInAll Job Openings

11 - 50 employees

💼 Consulting

📦 Logistics

📣 Marketing

Consulting • Logistics • Marketing

Aliancers is a consulting firm specializing in talent selection for mid-level management and operational positions across various business sectors. They enhance their services through a wide network of certified consultants throughout Latin America, delivering high-quality staffing solutions. Aliancers offers a range of services including staffing, augmentation, employer branding, assessment centers, psychological evaluations, disability work programs, temporary and interim staffing, and contractor placements.

📋 Description

• 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

🎯 Requirements

• 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) • 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: Amazon EC2, Amazon RDS, AWS Lambda, Amazon S3, AWS CloudWatch • Infrastructure as Code experience (CloudFormation or Terraform) • Experience with microservices architecture • Strong debugging and systems troubleshooting skills • Candidate must be located in Argentina (Need only Argentina candidates who speak both fluent English and Spanish) • Bonus: Knowledge of financial services domain; CI/CD pipeline configuration; Docker; Message queue systems (RabbitMQ, Kafka); Backend observability tools

🏖️ Benefits

• Completamente remoto • Organización dinámica y flexible que valora competencias, habilidades y potencial de las personas