Web Developer - Sao Paulo

Why Topsort? Why now?

Topsort is changing the way Retail Media works. By joining our scaling team, you'll feel your impact from day 1. The processes and messaging you build today will be a critical part of our foundation as we accelerate toward 200 Topsorters worldwide, and your innovations will leave a lasting mark on the industry, as a whole. Retail Media is on the verge of a new era, and Topsort is gathering the ecosystem together to shape a brighter future. Joining us now, you'll work directly alongside our co-founders and founding members to bring on Retail Media 3.0. If you're looking to define your career as something greater than yourself, come scale with us.

What it's like to work at Topsort

Our team is all about straightforward communication, embracing feedback without taking it personally, and fostering a super collaborative environment. It's a sports team that's hyper focused on winning, collaborative internally, and competitive externally - never the other way around. We thrive on working in the open, lifting each other up, and getting things done with a sense of urgency. We're the kind of team that loves making bold choices, sharing extraordinary opinions, and maintaining a 100 mph pace. No endless meetings here – if it can be done today, we're all about getting it done today.

What is this role like?
We're looking for a proactive and experienced Web Developer to join our fast-paced, growing US team! In this role, you'll help bring our product vision to life by building sleek, performant, and scalable web experiences that power retailers, marketplaces, and advertisers using Topsort's platform.

You will:

• Collaborate closely with designers, product managers, and backend engineers to implement intuitive, user-centric web interfaces.
• Own end-to-end development of key features, from architecture to deployment, ensuring accessibility, performance, and scalability.
• Translate complex technical concepts (like auction mechanics or retail monetization) into seamless user interactions.
• Contribute to and maintain our front-end component library and design system, ensuring consistency and reusability.
• Work with cross-functional teams to deliver marketing and product experiences that are fast, responsive, and visually engaging.

What (we think) you need to be successful – but hey, surprise us if you're an outlier!

• 3–5+ years of experience as a Web Developer or Front-End Engineer, preferably in a B2B SaaS or platform environment.
• Strong portfolio or project examples demonstrating web apps built with modern front-end technologies.
• Proficiency in JavaScript, HTML, and CSS, with deep experience in frameworks like React, Vue.js, or similar.
• Experience working with RESTful APIs and integrating with backend systems.
• Strong attention to performance optimization, accessibility, and responsive design.
• Familiarity with version control systems (Git), front-end tooling (Webpack, Vite, etc.), and CI/CD practices.
• Excellent communication skills, team-oriented mindset, and a bias for action.
• Ability to work onsite from our Sao Paulo office 4 days a week.

About Topsort

At Topsort, we believe in the mission of democratizing the secret technologies of the walled gardens and creating a privacy-first cookie-free world of clean advertising with modern tech, friendly products, and AI. We believe in making advertising intuitive, intelligent, and genuinely cool, without any of the creepy ads or cookie-obsession (well, maybe just the chocolate ones). In a rapidly changing industry, we're on a mission to democratize monetization access for all and ensure that advertising doesn't leave any brand or seller feeling confused or overwhelmed

Today, Topsort has 5 major hubs worldwide, and employees in 13+ countries, including Menlo Park, Boston, Santiago Chile, Sao Paulo Brazil, Barcelona Spain, and Sydney Australia. We are a truly global company that was born in the pandemic that's had rapid growth since out of a genius product, a customer-first mentality, and a hardworking team of talented individuals. Since our founding in 2021, we've gained customers in retail, marketplaces, and delivery apps in 40+ countries and quickly approaching the #1 position in the industry.

Do you enjoy a fast-paced environment? Do you like seeing your work create real-time impact, being part of a rocket ship from the very beginning? Let's do the unimaginable - let's make ads clean and cool again, with AI and modern technology.

• Deep dive into details: Professionals who are not content with superficial answers and dive deeply into the details to uncover root causes and optimal solutions.
• Team first: A low need for individual recognition, always prioritizing collective results over personal credit.
• You thrive with ambiguity: Exceptional ability to tackle open-ended problems in unstructured environments, turning chaos into structured innovation.
• Adaptability: Willingness to learn, mentor, lead, and follow as the situation demands, fostering growth at all levels.
• Urgency: A disproportionate sense of urgency in execution, while keeping scalability and the creation of replicable processes in mind to ensure long-term success.
• Curiosity: Genuinely curious individuals who can quickly learn difficult concepts and apply them effectively.