Job Application for Integrations Engineer, Toppie at Topsort

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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.

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.

About the Role:

We are looking for an Integrations Engineer to own the health and reliability of Toppie(our demand side product) across the marketplaces it runs on. This is a highly technical, product-adjacent role sitting at the intersection of ad tech, marketplace infrastructure, and automation engineering.

You won't just react to breakages — you'll build the systems and processes to catch issues before they ever reach a campaign or a reporting dashboard. You'll become the deepest expert on how Toppie behaves across every marketplace integration, and you'll use that knowledge to raise the bar on implementation quality across the board.

What You'll Do

End-to-End Assessment of Toppie Display Ads: Run systematic technical audits across the full Toppie display ad stack — from bid request construction and auction participation through creative rendering, impression tracking, and reporting pipelines. Pinpoint discrepancies between expected and observed behavior, reproduce issues in controlled environments, and produce detailed findings that engineering teams can act on immediately.
Map and Document Marketplace Constraints: Build and maintain a living technical reference of each marketplace's integration constraints — API rate limits, supported ad formats, auction mechanics, event tracking gaps, and reporting inconsistencies. Translate these constraints into concrete engineering guidance and flag blockers that require product or architectural decisions.
Own Technical Discovery & Demos: Lead technical conversations with marketplace partners and internal stakeholders to validate integration assumptions and surface edge cases early. Run structured demos of Toppie's capabilities to align on what's technically feasible within each marketplace's environment, and feed those learnings back into implementation standards.
Drive Integration Improvements: Not only flag issues but also own the path to fixing them. Identify recurring failure patterns, advocate for root-cause fixes over workarounds, and partner directly with product and engineering to spec and ship improvements.
Build Automated Health Checks & Monitoring: Design and implement automated test suites and monitoring tooling that continuously validate Toppie integrations at scale. Define SLIs for integration health (latency, fill rate, event delivery accuracy), build alerting pipelines that catch regressions before they surface in campaign performance, and maintain runbooks for rapid triage.

What (we think) you need to be successful

Bachelor's degree in Computer Science, Engineering, or a related field from top schools preferred
2+ years of experience in integrations engineering, ad tech, or a closely related technical domain
Hands-on experience with display advertising pipelines — familiarity with auction mechanics, ad serving, impression tracking, and reporting is a strong plus
Strong proficiency with APIs (RESTful), data formats (JSON, XML), and debugging tooling
Experience building or maintaining automated monitoring, health-check systems, or integration test suites
Analytical mindset — you're comfortable reading logs, writing queries, and following a signal through multiple systems to its root cause
Ability to work across ambiguous problem spaces and define structure where none exists
Strong written and verbal communication — you can turn a technical finding into a clear recommendation for a non-technical audience

What We Value

At Topsort, we seek professionals who embody the following qualities to drive our mission forward:

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.

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

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Integrations Engineer, Toppie

About the Role:

What You'll Do

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