Senior Software Engineer
Senior fullstack engineer at creative agency R/GA in Sao Paulo building scalable, CMS-driven web experiences for global brand clients. Core stack: TypeScript, Next.js/React, Python (FastAPI) or Node.js (NestJS), GraphQL/REST APIs, deployed on Vercel and GCP, with AI-assisted workflows (Claude, Codex, Gemini).
- Compensation
- Not disclosed
- Location
- Sao Paulo
- Work setup
- Not specified
- Seniority
- Senior
- Employment
- Not specified
- Experience
- 5+ years
- Category
- Software engineering
- Posted
Skills
Must have
- Fluent English
- 5+ years of professional experience in fullstack software engineering with a portfolio of production-grade web applications
- Strong AI-based development workflow (Claude/Codex/Gemini)
- Advanced proficiency in TypeScript, modern CSS (Sass, CSS Modules, or Tailwind), and state management libraries
- Frontend web frameworks experience (Next.js)
- Python backend (FastAPI) or Node.js backend (NestJS is a plus)
- Strong ability to design and consume RESTful and GraphQL APIs
- Hands-on experience with enterprise CMS platforms (e.g., Contentful, Brightspot, or AEM)
- Deep knowledge of accessibility (WCAG) and localization (i18n) implementation strategies
- Comfortable deploying on cloud platforms such as Vercel and Google Cloud Platform
Nice to have
- Experience delivering and maintaining large-scale flagship web experiences for major brands in an agile environment
- Ability to lead rigorous code reviews and provide mentorship
Full description
Senior Software Engineer (Fullstack)
R/GA is an independent creative innovation company for the intelligence age. We harness design and technology to create more valuable experiences for people and brands. A company of reinvention, we evolve as technology reshapes the world, and we help our clients do the same.
Our work harnesses and connects the potential of key technologies, platforms, and new ventures to create more valuable experiences between people and brands. Every interaction with a brand should deepen a customer's relationship and give them a reason to be loyal. Our collective offerings and expertise work together in service of this, whether training custom brand AI models, building adaptive commerce experiences, or designing personalized, generative interfaces.
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 Fullstack Senior Software Engineer with with strong AI-based development workflow (claude/codex/gemini), knowledge on TypeScript, frontend web frameworks (Next.js), Python backend (FastAPI framework) or Node.js (NestJS is a plus) and backend 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:
- AI Agent Development Workflow. You will be leveraging AI agents, ie Claude, Codex, to maximize your expertise across the work.
- Fullstack Engineering: You build across the entire stack, with a backend foundation in Python (FastAPI), NestJS/Node.js, and GraphQL, paired with a frontend built in TypeScript, Next.js, and React. You're equally comfortable designing API layers and the interfaces that consume them
- 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.