We're quickly growing and super excited for you to join us!
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.
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?
As a Mid Level Software Developer at Topsort you will build back-end services, APIs, and front-end experiences to support our mission: democratizing auction-based infrastructure for all marketplaces. Our first product is sponsored listings as a service. We automate and simplify auctions so that any advertiser, especially small ones, can compete successfully. It’s not easy. We use our game and auction theory expertise; implement real-time, scalable, always-available systems; and build an intuitive, easy-to-use UI for managing campaigns.
What (we think) you need to be successful - we’re open to not checking all the boxes and be proven wrong by outlier candidates as well!
Why it’s awesome to work at Topsort
Do you sound like the right fit? Let's dive right in!

Topsort is the leading Retail Media Infrastructure company, supporting omni-channel retailers, marketplaces, and delivery apps across more than 40 countries worldwide.
We prioritize our customers, focus on innovative products, and adhere to a privacy-by-design ad monetization framework.
Our solutions leverage advanced AI and machine learning technology, making Silicon Valley's advertising expertise accessible to all through user-friendly, high-performance products.
Topsort’s customers include Ambev, Petco, HEB, Trademe, Poshmark, DeliveryHero’s Glovo, Nana and more..