Senior Front-end Engineer (React/Node) Argentina

Qinshift; Buenos Aires; On-site; ARS 1,500,000 - 2,100,000; Full time

Job summary

Avenga is seeking a Senior Front-end Engineer with React.js and Node.js experience in Argentina, ideally Buenos Aires, to lead a strategic financial-services project. You will drive frontend and BFF development across the full software lifecycle in an agile setting.

You will collaborate with product and tech stakeholders, design cloud-native solutions, and mentor teammates while working in a team of engineers, leads, and UX specialists. Occasional in-person collaboration is expected.

Qualifications

• 5+ years of commercial experience with React.js and modern frontend practices.
• Hands-on Node.js (v18+) experience, preferably with Express.js and/or NestJS.
• Solid understanding of microservices and/or event-driven architectures.
• Experience building and consuming RESTful APIs.
• Knowledge of NoSQL databases.
• Practical experience deploying and managing applications in cloud environments.
• Familiarity with Serverless Framework or other IaC tools.
• Strong knowledge of GitLab, including branching strategies, feature development workflows, and hotfix processes.
• Experience with monitoring and alerting tools such as Datadog and Opsgenie.
• Excellent communication, collaboration, and stakeholder management skills.
• Native or fluent Spanish and Intermediate English proficiency.

Responsibilities

• Design, develop, and maintain frontend applications with a focus on React.js UX.
• Build Backend-for-Frontend (BFF) services using Node.js, Express.js, and NestJS.
• Create intuitive interfaces prioritizing usability and performance.
• Develop, integrate, and optimize RESTful APIs and backend services.
• Write unit tests and ensure code quality through reviews.
• Maintain and enhance production applications with new features.
• Collaborate with Product Owners, Tech Leads, and stakeholders.
• Build prototypes during discovery and scoping phases.
• Share knowledge to strengthen team capabilities.
• Align technical work with OKRs and business goals.

Skills

React.js

Node.js

Microservices

RESTful APIs

NoSQL

Cloud

Infrastructure as Code

GitLab

Datadog

Opsgenie

Communication

Spanish

English

Tools

Express.js

NestJS

Job description

Avenga is seeking a Senior Front-end Engineer with React.js and Node.js experience in Argentina, ideally Buenos Aires, to lead a strategic financial-services project. You will drive frontend and BFF development across the full software lifecycle in an agile setting.

You will collaborate with product and tech stakeholders, design cloud-native solutions, and mentor teammates while working in a team of engineers, leads, and UX specialists. Occasional in-person collaboration is expected.