Senior Front-end Engineer

Avenga; Municipio de Rincón de los Sauces; Hybrid; ARS 138,564,000 - 184,752,000; Full time

Job summary

Avenga is seeking a Senior Front-end (React.js) Engineer in Argentina to lead a strategic financial-services project. You will drive the full software lifecycle from discovery to deployment in an agile environment.

Join a multidisciplinary squad with engineers, leads, product owners, and UX specialists. The role offers in-person collaboration in Argentina, preferably Buenos Aires, with a flexible hybrid setup.

Qualifications

• 5+ years of commercial experience with React.js and Next.js framework.
• Solid understanding of microservices and/or event-driven architectures.
• Experience building and consuming RESTful APIs.
• Knowledge of NoSQL databases.
• Experience with AWS cloud services.
• Practical experience deploying and managing applications in cloud environments.
• 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 full-stack applications with a primary focus on frontend using React.js (Next.js).
• Create intuitive, engaging interfaces with strong usability and performance.
• Develop, integrate, and optimize RESTful APIs and backend services.
• Write unit tests and ensure code quality through reviews and best practices.
• Maintain and enhance production applications and implement new features.
• Collaborate with Product Owners, Tech Leads, and stakeholders to translate requirements.
• Build prototypes and proofs of concept during discovery phases.
• Share knowledge and best practices across teams.

Skills

Front-end development

Software architecture

RESTful APIs

Team collaboration

Stakeholder management

Communication

English proficiency

Spanish proficiency

Tools

React.js

Next.js

AWS

GitLab

Datadog

Opsgenie

Job description

Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets.

At the core of the role

In Argentina, we are looking for a Senior Front-end (React.js) Engineer to lead a strategic financial-services project. You will work across the entire software development lifecycle, from technical discovery and solution design to implementation, testing, deployment, and production support.

You will build modern cloud-native solutions, collaborate with product and technology stakeholders, and influence architectural decisions in an agile, innovation-driven environment.

As part of the team, you will join a multidisciplinary squad composed of Software Engineers, Technical Leads, Product Owners, and UX specialists.

This role is open to candidates in Argentina, preferably Buenos Aires, for occasional in-person collaboration.

Core skills you’ll bring

• 5+ years of commercial experience with React.js and the Next.js framework.
• Solid understanding of microservices and/or event-driven architectures.
• Experience building and consuming RESTful APIs.
• Knowledge of NoSQL databases.
• Experience with AWS cloud services.
• Practical experience deploying and managing applications in cloud environments.
• 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.

Nice-to-have

• Familiarity with Serverless Framework or other Infrastructure as Code (IaC) tools.
• Experience with Agile methodologies and the full software development lifecycle.
• Ability to mentor teammates and share technical knowledge across teams.

The impact you'll create

• Design, develop, and maintain full-stack applications with a primary focus on creating exceptional frontend experiences using React.js (Next.js).
• Create intuitive, engaging, and user-centric interfaces with a strong emphasis on usability and performance.
• Develop, integrate, and optimize RESTful APIs and backend services.
• Write unit tests and ensure software quality through code reviews and best engineering practices.
• Maintain, troubleshoot, and enhance production applications while implementing new features and improvements.
• Collaborate with Product Owners, Technical Leads, and stakeholders to understand business requirements and translate them into technical solutions.
• Build prototypes and proofs of concept during discovery and project scoping phases.
• Share knowledge, lessons learned, and technical discoveries to strengthen team capabilities and technology practices.
• Align technical initiatives with team objectives, OKRs, and broader business goals.