Senior Software Developer

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 Senior 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.

• Design, develop, and maintain scalable, high-performance applications while ensuring code quality and best practices.
• Provide mentorship, conduct code reviews, and drive best engineering practices to improve team efficiency.
• Identify and resolve bottlenecks, optimize system performance, and ensure reliability in distributed architectures.
• Work with cross-functional teams, translate business needs into technical solutions, and drive innovation through new technologies and best practices.

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!

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• 5+ years of experience in backend engineering, designing, developing, and maintaining scalable services.
• Strong experience with microservices architecture and distributed systems, ensuring efficiency and reliability.
• Proven track record of implementing engineering best practices, improving development efficiency and maintaining high code quality.
• Proficiency in Python and TypeScript, with a solid understanding of best practices, patterns, and performance optimization.
• Expertise in high-performance, low-latency systems, designing solutions that scale efficiently.
• Deep knowledge of distributed systems, decoupling patterns, and modern software architecture to build robust and maintainable services.
• Strong problem-solving and collaboration skills, working closely with product and engineering teams to develop new features and optimize existing ones.

Why it’s awesome to work at Topsort

• Direct Feedback and Rapid Growth: [96% of Topsorters report ]We work hard, set aggressive goals and execute flawlessly to accomplish them. We give candid feedback, push each other to set higher goals and produce more impact by always thinking “how do we do this faster and better”.
• Be part of an elite and collaborative sports team: We believe startup scaleup is just like a team sport. It's been written in our motto since day 1 that we are collaborative internally, competitive externally, and never the other round around. You are ultimately surrounded by just different people that are all here to help you get the job done and shine as a team. 
• Intellectual Rigor and Individuality: We were born in the pandemic by Stanford and Harvard alum cofounders who offer remote-working options with coworking memberships and (at least) once a year in person offsite gathering. You’ll be welcomed by coworkers in 11 countries that all bring a unique perspective to the company from day 1. From personalized birthday gifts to work anniversaries, and management training program or in-person gatherings or career talks and mentorships, part-time DJs and tik-tok vloggers are also commercial leaders and technical staff at Topsort. We don’t take management with a cookie cutter approach - but rather we cherish your quarks and think it makes us stronger. 
• Company Offsite and Industry Exposure: Once a year Topsorters get together as a whole and also meet customers and really spend time to get feedback. 
• Working Equipment and Hubs: our team is global and also centered around hubs, that means you’re welcome to create a hybrid work schedule, and encouraged to travel to other hubs to collaborate. We provide working devices of your choice and surprise swags for special events.
• Flexible PTO schedule with floating holidays: we encourage Topsorters to take time off and recharge, and respect different cultural norms so offer floating holidays to accommodate the celebrations you’d like.
• Meditation App, Birthday and Anniversary Celebrations: we like little surprises and remember the key moments to celebrate with you!

Do you sound like the right fit? Let's dive right in!