---
title: 'Software Engineer, Infrastructure at Topsort'
canonical: 'https://feeny.ai/job/software-engineer-infrastructure-topsort-santiago-santiago-metropolitan-region-3npfnfbvk1wv'
type: 'job'
last_seen: '2026-09-09'
---

# Software Engineer, Infrastructure at Topsort

- **Company:** Topsort
- **Location:** Santiago Santiago Metropolitan Region, Chile
- **Posted:** 2026-03-19
- **Last confirmed live:** 2026-09-09
- **Apply:** https://job-boards.greenhouse.io/topsort/jobs/5158734008

## Job description

We're quickly growing and super excited for you to join us!

## About Topsort

Topsort is the leading Retail Media Infrastructure company - we're democratizing the auction-based ad technology that was once exclusive to Amazon, Google, and Alibaba, and making it accessible to retailers, marketplaces, and delivery apps in 40+ countries worldwide. Our APIs power native sponsored listings, dynamic banners, and clean-room attribution at scale — all privacy-first, all real-time.

We're a fast-growing, global-first team of ~100 people across Boston, Santiago, São Paulo, Barcelona, Sydney, and beyond. We move fast, we build in the open, and we hold a high bar — especially on infrastructure.

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 hiring a Software Engineer for our Infrastructure team — the backbone of everything Topsort runs on. This is not a supporting role. Infrastructure at Topsort is a first-class, mission-critical function. When our infrastructure is healthy, every retailer and marketplace our customers serve gets fast, reliable, and fair auction results. When it's not, we feel it everywhere.

You'll be building and owning the systems that power our real-time auction engine, API platform, and internal developer tooling — at a scale and reliability standard that leaves no room for sloppiness. We need someone who treats production like it matters, because it does.

## What You'll Do

- Own the platform - Design, build, and maintain the foundational infrastructure that every Topsort product and engineering team depends on, from compute and networking to deployment and observability.
- Raise reliability - Define and enforce SLOs, build alerting systems that catch issues before customers do, and lead postmortems that actually prevent recurrence.
- Make deployments boring - Build CI/CD pipelines and deployment systems that are so reliable they're invisible. Automate the toil out of every release.
- Manage infrastructure as code - Own our cloud infrastructure (AWS/GCP) through Terraform or equivalent — no snowflake servers, no manual configuration drift.
- Enable developers - Build internal tooling and platform capabilities that make every Topsort engineer faster, safer, and more autonomous. Your customers are your colleagues.
- Harden security - Implement and enforce security best practices at the infrastructure level — secrets management, network policies, RBAC, supply chain integrity.
- Scale proactively - Capacity plan, load test, and tune our systems ahead of demand — not in reaction to a page at 2am.
- Participate in on-call - We take production seriously. You'll join the on-call rotation and be expected to respond, resolve, and document.

What We Think You Need to Be Successful

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

- Bachelor's in Computer Science, engineering or a related field from top schools
- 2–5 years of software engineering experience with a meaningful portion focused on infrastructure, platform, or SRE work
- Solid hands-on experience with Kubernetes in production — not a homelab, not a tutorial, but real clusters under real load
- Experience with at least one major cloud provider (AWS preferred) and infrastructure-as-code (Terraform or similar)
- Strong fundamentals in distributed systems — you understand CAP theorem, eventual consistency, and failure modes before they happen
- Experience building or maintaining CI/CD pipelines (GitHub Actions, ArgoCD, or similar)
- Comfort with observability tooling — metrics, logs, traces — and the discipline to use them proactively
- A security-conscious mindset: you think about blast radius, principle of least privilege, and secrets rotation without being asked

You'll stand out if you have:

- Experience in high-throughput, low-latency systems (ad tech, fintech, real-time bidding, or similar)
- Familiarity with service mesh, eBPF, or advanced Kubernetes networking
- Experience with database infrastructure and data streaming
- A track record of improving developer experience and reducing time-to-deploy
- Experience at a high-growth startup where infra had to scale faster than the team

Who Thrives Here

Topsort engineering is not for everyone — and that's intentional. You'll do well here if:

- You take ownership seriously . You don't wait to be assigned a problem. If you see something broken, you fix it or escalate immediately.
- You write production-grade code, not proof-of-concepts. You document your work, write runbooks, and leave systems better than you found them.
- You're honest about tradeoffs. We'd rather hear "this will take two weeks to do right" than ship something fragile under the guise of speed.
- You sweat the details — especially in infra. A misconfigured RBAC rule, a missing circuit breaker, an oversized pod resource request — these things matter here.
- You communicate clearly and often. We build in the open. Cross-functional collaboration is expected, not optional.
- You're intellectually curious and you stay current. The infrastructure landscape moves fast. We expect engineers on this team to help us adopt the right new tools — and resist the wrong ones.

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

- [Account Manager, North America](https://feeny.ai/job/account-manager-north-america-topsort-somerville-massachusetts-5xfgf047ybyq) — Somerville Massachusetts, United States
- [Application for Engineering Roles](https://feeny.ai/job/application-for-engineering-roles-topsort-santiago-santiago-metropolitan-region-p10rjkcj9z69) — Santiago Santiago Metropolitan Region, Chile
- [Commercial Legal Associate](https://feeny.ai/job/commercial-legal-associate-topsort-somerville-1myw88w2j98e) — Somerville, MA
- [Account Executive Toppie, EMEA](https://feeny.ai/job/account-executive-toppie-emea-topsort-barcelona-qj7yz8z0ddv7) — Barcelona, Spain
- [Principal Software Engineer](https://feeny.ai/job/principal-software-engineer-topsort-santiago-santiago-metropolitan-region-kksj626rcpc4) — Santiago Santiago Metropolitan Region, Chile
- [Business Development Representative (BDR), EMEA](https://feeny.ai/job/business-development-representative-bdr-emea-topsort-barcelona-nvdsnzqvbkrh) — Barcelona, Spain
- [Account Executive Toppie, Brazil](https://feeny.ai/job/account-executive-toppie-brazil-topsort-sao-paulo-qk37p39k0gsm) — São Paulo, Brazil
- [Account Executive, EMEA](https://feeny.ai/job/account-executive-emea-topsort-london-england-zxjkzbn2r61h) — London England, United Kingdom
- [Business Development Representative (BDR), US](https://feeny.ai/job/business-development-representative-bdr-us-topsort-somerville-ayx774k2erbj) — Somerville, MA
- [Account Manager, EMEA](https://feeny.ai/job/account-manager-emea-topsort-barcelona-t53j96rv64rn) — Barcelona, Spain