Senior Software Engineer

Location: Buenos Aires, Remote

Department: Technology

Senior Software Engineer (Fullstack)

We are a global digital innovation agency for the Intelligence Age, specializing in digital product development, brand transformation, media, and communications for major companies. Our Technology team is an integral part of our business; they are perpetual problem solvers, always seeking new and innovative ways to help our creatives bring their ideas to life. We work across a diverse range of projects, from major website builds and core tech platforms to bespoke experiences and strategic innovation with emerging technologies.

About the Role

We are seeking a Senior Software Engineer with a focus on TypeScript, frontend web frameworks and fullstack integrations to join our engineering team. In this role, you will be responsible for building scalable, high-performance web experiences that serve global audiences. You will act as a core code contributor within a broader team, moving beyond simple feature implementation to architecting reusable systems, performing rigorous code reviews, and ensuring the seamless integration of diverse technologies. The ideal candidate is a web specialist who understands the full software development lifecycle and is passionate about delivering high-quality, production-ready code in a collaborative environment.

Key responsibilities:

On any given day, you will:

• Architect & Build Fullstack Solutions: Design and develop end-to-end web applications that serve a global audience
• Modular Component Development: Build and maintain scalable, modular component libraries designed for use in composable architectures, enabling rapid assembly of new features and pages.
• Collaborate with Design & Product Teams: collaborate with designers to assess design specifications, product requirements, and translate those into technical specifications.
• CMS Implementation: Deliver web experiences leveraging enterprise-grade CMS platforms, translating complex content models into seamless authoring experiences and dynamic frontend displays.
• System & API Integration: Seamlessly connect frontend interfaces with backend services and third-party solutions via REST APIs, SDKs, and custom-built libraries.
• Accessibility & Localization: Ensure every user has a first-class experience by implementing a11y standards (WCAG) and managing multi-region localization best practices.
• Documentation & Technical Mapping: Create documentation to ensure technical clarity, supporting long-term maintenance and team scalability.
• Peer Mentorship & Code Quality: Lead rigorous code reviews and provide mentorship, upholding high standards for TypeScript patterns, CSS architecture, and overall system health.

The ideal candidate:

• The Complete Architect: You are a seasoned developer who thrives on technical challenges across the entire stack, from refining CSS transitions to planning API integrations for dynamic modules.
• Framework & Language Fluent: You have deep expertise in TypeScript, modern frontend frameworks (such as React, Vue, Angular), and you understand how to bridge them with robust backend logic.
• Composable Mindset: You don’t just build pages; you build systems. You are passionate about creating reusable components that are flexible, performant, and easy for other developers to use.
• Large-Scale Web Delivery: You understand the rigor that needs to go into delivering and maintaining scaled flagship web experiences for major brands, including release orchestration, working closely with QA to remediate issues, and working an agile environment with a scaled team of other amazing developers.
• Detail-Oriented Craft: You possess a passion for product quality, ensuring that your code is not only functional but also clean, maintainable, and well-tested; and can work autonomously to hold yourself and your work to a high standard.
• AI-Enabled: You’re comfortable leveraging AI code-assist tools to accelerate your workflow and are interested in integrating AI services where they add genuine value to work efficiency, productivity, and quality.

You bring:

• 5+ years of professional experience in fullstack software engineering, with a strong portfolio of production-grade web applications.
• Advanced proficiency in TypeScript, modern CSS (Sass, CSS Modules, or Tailwind), and state management libraries.
• Hands-on experience with Enterprise CMS platforms (e.g., Contentful, Brightspot, AEM) and a deep understanding of building modular components within them.
• Expertise in Web Standards: Deep knowledge of accessibility (WCAG) and localization (i18n) implementation strategies.
• API Proficiency: Strong ability to consume RESTful APIs.