Senior Frontend Software Engineer- Modalidad Contractor

Rocket Stars; Buenos Aires; On-site; ARS 1,200,000 - 1,800,000; Full time

Job summary

Rocket Stars is seeking a Senior Frontend Software Engineer to join a high-impact consumer web team in Buenos Aires. You will design, build, and maintain modern, scalable web experiences used by millions worldwide, collaborating with product, design, and engineering to evolve a large web app stack.

This frontend-focused role requires strong TypeScript expertise, React/Redux mastery, and experience with Webpack and Vite.

Qualifications

• 5+ years of frontend experience in production-grade apps.
• Proficient with TypeScript and modern React ecosystems.
• Experience with Redux and modern frontend tooling.
• Experience with CI/CD pipelines in agile environments.
• Strong communication and cross-team collaboration.

Responsibilities

• Develop, maintain, and evolve robust, scalable web apps using React, Redux, TS, Webpack, and Vite.
• Collaborate with product managers, designers, and engineers to implement new features.
• Translate UI/UX designs into accessible, user-friendly interfaces.
• Participate in frontend architecture modernization.
• Write clean, well-tested code and perform code reviews.
• Mentor junior engineers and participate in design reviews.
• Contribute to architectural decisions balancing debt, perf, and maintainability.

Skills

TypeScript

React

Redux

CI/CD

Agile development

Tools

Webpack

Vite

Backbone.js

AWS

SQL

Job description

Buenos Aires, Argentina INSTAN- Senior FE Software Engineer

We are looking for a curious, motivated, and experienced Software Engineer III (Frontend) to join a high-impact consumer web and services team. In this role, you will design, build, and maintain modern, performant, and scalable web experiences used by millions of users worldwide. You will work closely with product, design, and engineering partners to help evolve and modernize a large and complex web application stack, while contributing to broader architectural discussions across teams.

This is primarily a front-end role, with strong collaboration across backend and platform teams. The ideal candidate is comfortable making technical decisions in complex environments, enjoys solving ambiguous problems, and can balance delivery, performance, and long-term maintainability.

Responsibilities

• Develop, maintain, and evolve robust, scalable web applications using React, Redux, TypeScript, Webpack, and Vite.
• Collaborate with product managers, designers, and engineers to design and implement new features for data visualization platforms and consumer-facing web portals.
• Translate UI/UX designs into high-quality, accessible, and user-friendly interfaces.
• Participate in the modernization of legacy systems and frontend architecture.
• Write clean, maintainable, and well-tested code, following engineering best practices.
• Perform code reviews, debugging, and troubleshooting to ensure a high-quality and stable codebase.
• Contribute to architectural decisions, balancing technical debt, performance, scalability, and maintainability.
• Actively participate in agile ceremonies and continuous improvement initiatives.
• Use LLM / AI-assisted development tools to ramp up on large codebases, generate boilerplate, and accelerate delivery.
• Work autonomously on ambiguous problems, breaking them down into clear, actionable tasks.
• Collaborate with cross-functional partners and proactively reach out to stakeholders to gather requirements and unblock delivery.
• Mentor junior engineers and participate in technical design reviews.

Requirements

• 5+ years of professional experience in frontend web development.
• StrongproficiencywithTypeScript.
• Strong hands-on experience with React, Redux, Webpack, and Vite in complex, production-grade web applications.
• Proven experience working in agile development environments and with CI/CD pipelines.
• Demonstrated ability to lead technical initiatives and drive alignment across multiple teams.
• Experience making architectural decisions in large-scale frontend systems.
• Strong problem-solving and analytical skills, including debugging and resolving production issues at scale.
• Experience building and maintaining high-traffic web applications.
• Excellent communication skills and ability to work effectively with cross-functional teams.
• Ability to work independently and manage priorities in a fast-paced, evolving environment.
• Experience working with cloud environments such as AWS.
• Experiencewith Backbone.js.
• Comfort contributing to backend or API-related work when needed.
• Familiarity with relational databases and writing SQL.
• Advanced TypeScript expertise, including complex type systems and generics.