Senior Nodejs Engineer

About the Position

Senior Node.js Engineer

It’s your career – make it matter

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX, and UI design, managed services, product development, and software development.

We’re looking for an experienced Senior Node.js Engineer based in Argentina (only Buenos Aires/CABA or AMBA) to design and build scalable microservices on AWS. You'll be working in modern AWS environments, developing microservices and REST APIs using Node.js and TypeScript, while leveraging AI tools to enhance productivity and solution quality. Join a mission-driven client focused on financial inclusion and education across the region.

Responsibilities

• Replace legacy integrations by building modern Node.js (TypeScript) services and migrating functionality to AWS;
• Contribute to the design and architecture of APIs and distributed services that enable system scalability and reliability;
• Implement and maintain Infrastructure as Code for services, deployments, and environment provisioning;
• Design and interact with relational and NoSQL data stores, ensuring data integrity, performance, and appropriate indexing/partitioning strategies;
• Integrate code into CI/CD pipelines, manage deployment processes, and mitigate release risks;
• Participate in incident management and postmortems; propose and implement remediation to reduce recurrence;
• Mentor junior and mid-level developers, run technical knowledge-sharing sessions, and foster team best practices;
• Collaborate with product, QA, and operations teams during one weekly on-site alignment/co-creation session and through regular remote touchpoints.

Requirements

• 6+ years working with Node.js (JavaScript and TypeScript);
• 5+ years of exposure to relational (RDS or similar) and NoSQL (DynamoDB or similar) databases;
• 3+ years of hands-on practice with AWS services: Lambda, S3, RDS, API Gateway, and EKS;
• Strong expertise in designing and building RESTful APIs and distributed services;
• Practical familiarity with CloudFormation, AWS SAM, or the Serverless Framework;
• Hands-on background in Agile environments (SCRUM and/or Kanban), including using Jira;
• Demonstrated ability to own features end-to-end development, documentation, and deployment risk management;
• Native Spanish and intermediate English;
• Work model: Hybrid, with one mandatory on-site day per week for alignment and co-creation sessions.

Nice to Have

• Experience working with AI tools and their practical application in software development;
• Familiarity with continuous integration and delivery tools and workflows (GitLab CI/CD).

We Offer

• Opportunity to work with a mission-driven client focused on financial inclusion and education across the region.
• Collaborative and inclusive work environment.
• Equal opportunities in recruitment, career development, and leadership.

About the Company

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.

Locations

• Córdoba, Buenos Aires

Remote Status

• Hybrid

Technology

• Node.js

Seniority

• Senior-level