---
title: 'Software Engineer, Integrations at Topsort'
canonical: 'https://feeny.ai/job/software-engineer-integrations-topsort-barcelona-0vtqbtzn7380'
type: 'job'
last_seen: '2026-10-07'
---

# Software Engineer, Integrations at Topsort

- **Company:** Topsort
- **Location:** Barcelona, Spain
- **Posted:** 2025-09-05
- **Last confirmed live:** 2026-10-07
- **Apply:** https://job-boards.greenhouse.io/topsort/jobs/4908720008

## Job description

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.

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

At Topsort, we communicate openly and move fast. We say things as they are, challenge each other early, and embrace feedback with curiosity—it’s how we build better, faster. Every experiment has a purpose, and every outcome helps us make the next decision smarter. There’s no single formula for success here; we find what works, improve it, and scale it.

We’re collaborative internally and competitive externally—never the other way around. The pace is quick, sometimes a 100-mph kind of fast, and that’s what keeps it exciting. We act with intent, lift each other up, and turn bold ideas into real results. No endless meetings here—if it can be done today, it gets done today.

About the Role:

We are looking for a hands-on and client-facing Software Engineers, Integrations focused to join our team at Topsort. In this role, you will play a pivotal part in translating real-world business needs into powerful, scalable product solutions. You’ll collaborate directly with sales, product, and engineering teams to support Pre-sales conversations - partner with sales to understand customer pain points, lead technical implementations with Topsort.

You will:

- Engage with Prospects & Clients: Work closely with the sales and customer success teams to understand client requirements and propose tailored technical solutions.
- Own Technical Discovery & Demos: Lead technical conversations and run product demonstrations that align our platform’s capabilities with customer needs.
- Solution Design: Translate business challenges into feasible product configurations, data integrations, and implementation plans.
- Support RFPs and Security Questionnaires: Respond to technical and compliance-related questions in RFPs and trust questionnaires.
- Own the entire integration process – You won’t just be following instructions; you’ll be leading integrations end-to-end, solving complex challenges, and acting as a trusted technical advisor to our clients.
- Be the bridge between tech & customer success – Work directly with clients, engineers, and product teams to deeply understand their needs and ensure seamless API integrations. Your solutions won’t just be functional—they’ll be impactful and user-friendly, strengthening long-term customer relationships.

What We Think You Need to Be Successful

We’re open to candidates who don’t check every box but show strong potential.

Core Requirements & Experience

- Industry Experience: 1+ years in software development, managing integrations, APIs, system interoperability, or ad tech is a plus. etc.
- API Expertise: Strong experience with RESTful APIs, authentication methods (OAuth), and data formats (JSON, XML).
- Proven ability to communicate complex technical ideas clearly to both technical and non-technical audiences.
- Demonstrated success working directly with enterprise clients, understanding their operational realities and constraints.
- Comfortable navigating ambiguity and making decisions with incomplete information.
- Clear sense of ownership — you lead the solution from pre-sales design through implementation and post-sale success.
- Experience collaborating with product and engineering teams to shape customer-driven roadmaps.
- Bachelor’s degree and above in Computer Science, Engineering, or related field from a top school.
- CRM & Platforms: Familiarity with customer relationship management (CRM) tools and integration platforms.
- Communication & Stakeholder Management:  Strong ability to interact with both technical and non-technical audiences, translating complex concepts into actionable insights.

## 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.

We are proud to be an equal opportunity employer and to foster a workplace where diversity is valued and celebrated. We believe that diverse perspectives and experiences strengthen our teams and drive better outcomes. We respect and value any race, religion, color, national origin, ancestry, caste, gender, gender identity or expression, sexual orientation, age, disability, medical condition, pregnancy, genetic information, marital status, or military service.

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

## About Topsort

## Company Overview
- **One-liner**: Topsort provides AI-powered, privacy-first retail media infrastructure that enables marketplaces, retailers, and commerce platforms to launch and scale monetization through real-time auctions, sponsored listings, display, offsite, and in-store advertising.
- **Entity Type**: Private (Series A, post-money valuation $150M as of March 2024)
- **Headquarters**: Palo Alto, California, United States
- **Founded**: 2021
- **Founders**: Not publicly available (company spokesperson identified as "Ye" in media)

## Core Business
- **Primary industry/industries**: Retail media infrastructure, ad tech, commerce monetization, AI-powered advertising
- **Target customers**: B2B – marketplaces, retailers, delivery apps, travel platforms, and commerce networks (both enterprise and SMB)
- **Mission or purpose statement**: "Make world-class monetization accessible to everyone" by bringing the same auction and AI-driven advertising infrastructure used by the largest marketplaces to every commerce platform.

## Products & Services
- **T-Engine (Auction & Ranking Engine)**: High-performance, edge-deployed auction infrastructure for large-scale commerce media – sub-5ms p99 latency, 99.99% uptime SLA.
- **Toptimize (AI Optimization Layer)**: Improves yield, pacing, ROAS, and relevance on top of existing ad stacks.
- **T-Brain (Commerce Intelligence)**: Uses catalog, auction, campaign, and performance data to power smarter monetization and ranking.
- **Data Genie (Retail Media Analytics)**: Unifies reporting, insights, benchmarking, and performance analysis.
- **Tomi (AI Ad Ops Agent)**: Conversational AI agent for launching and managing retail media campaigns.
- **Sponsored Listings**: Auction-based product promotion in search, category, and discovery surfaces.
- **Sponsored Brands**: Brand-level advertising across commerce surfaces.
- **Display & Banners**: Programmatic display advertising.
- **In-Store Media**: Extends retail media into physical store environments.
- **Sponsored Prompts**: Agentic ad formats for AI-native commerce (e.g., within conversational shopping experiences).
- **BIDLESS™**: Autobidding technology for automated campaign optimization.

## Market Standing
- **Valuation/Market Cap**: $150 million post-money (Series A, March 2024); previously $110 million post-money (seed round, 2022)
- **Key Metric**: Total funding raised – $28.6 million ($8M seed in 2022, $20M Series A in 2024)
- **Notable Investors/Partners**: Upload Ventures (lead Series A), Quiet Capital, Pear Ventures
- **Growth Signals**: 120+ employees across 4 continents; 40+ countries served; billions of commerce decisions processed; <5ms auction latency; 99.99% uptime; expanded into offsite and in-store media in 2023–2025; launched new ad formats (Sponsored Brands, Video Ads, Sponsored Prompts) and AI agents (Tomi, Data Genie).

## Competitive Advantages
- **Privacy-first approach**: Built for a post-cookie world with a Cleanroom feature that combines data without compromising user privacy.
- **AI-native infrastructure**: Auctions, relevance, measurement, and optimization are designed for AI-driven commerce (including agentic shopping).
- **Omnichannel coverage**: Supports search, category, display, offsite, in-store, and emerging AI prompt surfaces from a single API.
- **Low latency at global scale**: Edge-deployed auction engine with sub-5ms p99 latency across nine regions.
- **Accessibility**: Democratizes advanced monetization technology previously limited to giants like Amazon, making it available to smaller marketplaces and retailers.

## Strategic Focus
- **AI-native commerce**: Expanding monetization formats for agentic and conversational shopping experiences (e.g., Sponsored Prompts).
- **Global expansion**: Growing presence across North America, Europe, Asia Pacific, and Latin America.
- **Product breadth**: Continuing to add ad formats (video, in-store, offsite) and AI-powered automation (Tomi, Data Genie, Toptimize).
- **Post-cookie leadership**: Positioning as the clean, privacy-compliant alternative for retail media.

## Why Work Here
- **Culture**: Described as "smart, driven, and from all over the globe" – a team building infrastructure that powers the next generation of commerce.
- **Engineering focus**: Engineers work on high-scale auction systems, AI/ML optimization, distributed systems, and real-time data pipelines.
- **Global team**: Offices in Palo Alto (HQ), Munich, Melbourne, Santiago, and Barcelona; remote-friendly culture implied by distributed team.
- **Growth trajectory**: Fast-growing startup (Series A, 120+ employees) with a clear product-market fit in a hot sector (retail media).
- **Impact**: Opportunity to build the underlying monetization infrastructure for hundreds of commerce platforms, processing billions of decisions.

## Sources
1. [Topsort Website](https://www.topsort.com/)
2. [Topsort About Page](https://www.topsort.com/about)
3. [Topsort Careers (Greenhouse)](https://job-boards.greenhouse.io/topsort)
4. [Topsort LinkedIn](https://www.linkedin.com/company/topsort)
5. [TechCrunch: "Topsort helps e-commerce create ads without being ‘creepy’"](https://techcrunch.com/2024/03/04/topsort-150m-e-commerce-ads/)

## Other roles at Topsort

- [Application for Engineering Roles](https://feeny.ai/job/application-for-engineering-roles-topsort-santiago-santiago-metropolitan-region-p10rjkcj9z69) — Santiago Santiago Metropolitan Region, Chile
- [Software Engineer, Infrastructure](https://feeny.ai/job/software-engineer-infrastructure-topsort-santiago-santiago-metropolitan-region-3npfnfbvk1wv) — Santiago Santiago Metropolitan Region, Chile
- [Software Engineer, Integrations](https://feeny.ai/job/software-engineer-integrations-lumos-united-states-svqqrgz9xhb1) — United States
- [Software Engineer, Integrations](https://feeny.ai/job/software-engineer-integrations-builders-at-gigs-sao-paulo-mgy15g80a894) — São Paulo, Brazil
- [Software Engineer, Integrations](https://feeny.ai/job/software-engineer-integrations-cohere-europe-7kdbm5e1b1vd) — Europe
- [Software Engineer, Integrations](https://feeny.ai/job/software-engineer-integrations-rilla-new-york-m5qhkrgzv99c) — New York, NY
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