TN16 - Backend Node.js Senior

Rockcruit · posted Oct 6, 2026

Open to candidates in Argentina

Full-time · Senior

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What this job asks for

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Must have

  • •3+ years building backend services with Node.js
  • •Experience designing and building RESTful/GraphQL APIs
  • •Hands-on experience with cloud platforms (AWS, Azure, GCP)
  • •Solid knowledge of distributed system design
  • •Experience with relational and non-relational databases
  • •Advanced English level

Nice to have

  • •Experience in the banking/fintech industry
  • •Previous experience in a leadership role

Tools and technologies

Node.js, JavaScript, TypeScript, NestJS, Express.js, Hono, RESTful APIs, GraphQL APIs, AWS, Azure, Google Cloud, SQS, SNS, Kafka, RabbitMQ

Languages required

en

Read the full posting

Are you a passionate Node.js developer looking for your next challenge? Do you enjoy working with cutting-edge technology and collaborating with like-minded individuals? As a Node.js Engineer, you will play a critical role in developing and maintaining high-performance applications using the latest Node.js technologies. You will be responsible for designing, developing, and testing software solutions, as well as collaborating with cross-functional teams to ensure timely delivery of quality products.

The ideal candidate should have a strong background in Node.js and JavaScript technologies, experience with agile development methodologies, and possess excellent problem-solving and communication skills. If you are excited about joining a dynamic and innovative team of developers, we want to hear from you.

/ Responsibilities
● Design, build, and maintain scalable backend services and APIs in a horizontally scaled, microservices-based architecture.
● Define and implement transactional flows across multiple microservices, handling consistency, failures, and retries.
● Learn the client's business model in depth and build a solid relationship of trust with client stakeholders.
● Own features and projects end to end, from technical design and estimation through delivery and production support.
● Write high-quality, well-tested code that follows our coding standards and best practices.
● Analyze complex problems, troubleshoot production issues, and make informed technical decisions.
● Collaborate with engineers, product, QA, and business partners, and communicate effectively with managers and engineers alike.

/ Requirements
Technical Skills
● 5+ years of software development experience with JavaScript / TypeScript.
● 3+ years building backend services with Node.js and at least one modern framework such as NestJS, Express.js, or Hono.
● Experience designing and building RESTful and/or GraphQL APIs.
● Hands-on experience with AWS (preferred), Azure, or Google Cloud.
● Solid knowledge of distributed system design and the challenges of horizontally scaled environments.
● Experience with relational and non-relational databases.
● Experience with messaging or event-driven systems (e.g., SQS/SNS, Kafka, RabbitMQ).
● Experience writing unit and integration tests (e.g., Jest, Vitest).
● Familiarity with DevOps practices, CI/CD pipelines, and observability (logging, metrics, tracing).
● Proficiency with Git and code versioning workflows.

● Strong grasp of software design patterns and principles for building robust, scalable, and maintainable systems.
● Ability to estimate work accurately.
● Experience in the banking/fintech industry is a plus.
● Previous experience in a leadership role such as tech lead is a plus.

Soft Skills
● Strong sense of ownership.
● Excellent written and verbal communication and interpersonal skills.
● Ability to collaborate effectively with technical and business partners.
● Comfortable working in a fast-paced environment.
● Attention to detail.
● Team player.
● Problem solver.
● Advanced English level.
● Quick learner, passionate about learning new technologies.

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