--- title: 'Quality Engineer at CloudX' canonical: 'https://feeny.ai/job/quality-engineer-cloudx-global-xvn9b70pqckn' type: 'job' last_seen: '2026-09-12' --- # Quality Engineer at CloudX - **Company:** CloudX - **Location:** Global - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-03-02 - **Last confirmed live:** 2026-09-12 - **Apply:** https://jobs.gem.com/cloudx/am9icG9zdDqkrNuWcQuowcYDHy1hXohX ## Job description Quality Engineer ## About CloudX At CloudX we’re building a new supply-side advertising platform for mobile publishers. We’re convinced that an AI-native product will significantly advance the state of the art in mobile advertising; we [recently raised a $30M Series A](https://www.cloudx.io/posts/hello-world) in order to bring this dream to life. We have a long history of innovation in this space — our founding team previously built MoPub (sold to Twitter for $350M) and MAX (backbone of AppLovin's $200B business). Our new platform combines real technical improvements like [verifiably fair auctions](https://www.cloudx.io/posts/the-trust-problem-in-ad-tech-and-how-we-solved-it) with a truly [AI-native product experience](https://www.cloudx.io/posts/monetization-as-code) to give publishers unprecedented control over their ad monetization strategy. ## About The Team Like the rest of our company, our Engineering team is distributed and remote — spanning UTC-8 to UTC+6. We have a strong ownership culture and are heavily collaborative, relying primarily on asynchronous, written, communication for coordination. We ship daily and believe that fast CI and good test coverage is the best way to remain productive as we scale. We’re small and high trust; we optimize for rapid iteration and experimentation. Everyone has access to the latest AI tools, but rather than generating vibe-slop we use them pragmatically to build better products. We are lucky to work closely with our talented Product and Business teams to make sure we’re building the right things. It’s a true early-stage startup with lots of important work to go around. ## What you'll do We care deeply about craftsmanship and quality. As our first dedicated Quality Engineer, you’ll own the end-to-end reliability of our platform, build the guardrails, tooling, and processes to catch bugs as early as possible Your focus will be split across three main areas: - The SDK & Ad Rendering: You’ll design and maintain test suites that validate how our SDK behaves across a fragmented world of devices and OS versions. You’ll build automated ways to verify that ads don’t just "load," but render perfectly, performantly, and without breaking the publisher’s app. - Infrastructure & CI/CD: You’ll work alongside the backend team to toughen up our pipelines. Whether it’s improving our test coverage or building custom tooling to make our CI faster, your goal is to help us ship daily with zero anxiety. - Defining the Standard: You’ll be the internal champion for testing best practices. You’ll help other engineers write better tests and ensure that "quality" is a shared mindset, not a separate department. ## Who you are We’re a small, fast-moving team. We care more about your ability to solve problems than your years of experience in a specific framework. - You’re a builder, not just a tester. You don't just write test plans; you write code. You’re comfortable diving into production environments, reading backend logic, and building automation frameworks from scratch. - You have Startup Grit. You understand that in an early-stage company, we have to make trade-offs. You know exactly when a 5-minute manual check is enough and when we need a "bulletproof" automated suite to prevent a catastrophe. - You write for humans and agents. Since we work asynchronously, your writing matters. You can explain a complex race condition in a way that’s easy to grasp, and you write bug reports that engineers actually look forward to reading. - You are AI forward: you are actively experimenting with or using AI as part of your testing practice. You don’t send vibe-coded slop to your teammates to review, but you use AI appropriately to achieve great results. - You take it personally. When a bug hits production, it bothers you. You’re proactive about identifying risks and edge cases that others might overlook in the rush to ship a feature. - Systems Thinker. You can visualize how a change in a backend API might ripple out and break a specific ad format on an old Android device three layers deep. Things that will make you standout - Mobile SDK Experience: If you’ve dealt with the pain of mobile fragmentation and SDK integration before, you’ll fit right in. - AdTech Background: If phrases like "RTB," "Vast tags," or "Auction latency" mean something to you, you’ll have a massive head start. - Performance Engineering: Experience with load testing or benchmarking high-throughput systems is a huge plus. ## About CloudX ## Company Overview - **One-liner**: CloudX is an AI-native supply-side platform (SSP) for mobile and AI publishers, rebuilding publisher monetization infrastructure for the intelligence era. - **Entity Type**: Private (Series A) - **Headquarters**: Suffield, Connecticut, USA (also offices in San Francisco, New York, Las Vegas, Aspen) - **Founded**: 2025 - **Founders**: Jim Payne (Founder & CEO), Jack Kern (Co-Founder & Chief of Staff) ## Core Business - **Primary industry**: AdTech / Mobile Advertising / Artificial Intelligence - **Target customers**: Mobile publishers, AI-native publishers, app developers (B2B) - **Mission or purpose**: To redefine the future of mobile advertising by providing a secure, transparent, AI-native auction infrastructure that puts publishers first, leveraging Trusted Execution Environments (TEE) and real-time intelligence. ## Products & Services - **CloudX SSP (Supply-Side Platform)**: Core platform that provides a liquid marketplace, AI workflows, and real-time bid optimization for mobile and AI publishers. Includes a secure, AI-native auction infrastructure powered by TEE. - **CloudX Agent**: An AI-powered assistant that lets publishers interact with their inventory via natural language—review metrics, run A/B tests, update pricing strategies, or get integration help. Available in beta from every page in CloudX. - **Total Revenue Dashboard**: A unified reporting view that consolidates data from multiple platforms, addressing reporting complexity for multi-platform publishers. - **DT SDK Bidder**: A new demand source that matches performance and brand demand across all formats, now live for CloudX publishers. ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed (private company) - **Key Metric**: Total funding of **$30.1M** (Series A, raised in November 2025) - **Notable Investors/Partners**: Lead investor: **Addition** (Series A, 6 investors total). Key partnerships include DT (demand source). - **Growth Signals**: - Headcount: 36 employees (as of mid-2026), with a **monthly growth rate of +5.1%**. - Distributed workforce across 11 countries (US, UK, Singapore, Kyrgyzstan, Cyprus, Ukraine, Switzerland, North Macedonia, Slovenia, Argentina, and more). - Active hiring across technical and business roles (Senior ML Engineer, Senior Fullstack Engineer, Forward Deployed Engineer, Business Development, etc.). - Recent product launches: CloudX Agent (July 2026), Total Revenue dashboard (August 2026), DT SDK Bidder (August 2026). ## Competitive Advantages - **Founding team pedigree**: Built by the creators of **MoPub** and **MAX**—two transformative mobile ad platforms. This deep industry expertise gives them a unique understanding of publisher pain points. - **TEE (Trusted Execution Environment) infrastructure**: Provides transparency, data integrity, and security for AI-driven ad auctions—a strong differentiator in a privacy-conscious era. - **AI-native architecture**: Built from the ground up for AI, not retrofitted. Enables adaptive optimization, real-time intelligence, and support for generative/agentic environments. - **Publisher-first approach**: Focus on empowering mobile publishers with control, transparency, and modern tools. ## Strategic Focus - Expanding globally with the first dedicated BD hires in Turkey (a mobile gaming powerhouse) and growing the EMEA business. - Scaling the engineering team to build out the AI-native platform, including the CloudX Agent and infrastructure for high-throughput, low-latency ad serving. - Building out demand sources (e.g., DT SDK Bidder) to increase publisher revenue. - Deepening multi-platform reporting and analytics capabilities. ## Why Work Here - **Small, senior team**: CloudX emphasizes a "small, senior team" where engineers "own real surface area from day one." The average seniority skews towards experienced professionals (37% Specialist, 17% Head, 5% C-Level/Founder). - **Remote & hybrid flexibility**: Roles are listed as "In-Office or Remote" with 7–37 locations depending on the role. The website notes "OnSite Workspace" but employees are distributed across 11 countries, indicating strong remote support. - **Engineering culture**: Cutting-edge tech stack (AI, TEE, high-throughput systems). Blog posts detail architecture decisions (e.g., building an in-house sandbox platform for the Agent). - **Perks & environment**: Fast-paced startup environment with a focus on ownership and impact. Alumni talent sources include Apple, Roblox, AssemblyAI, and Publicis Groupe. - **Recent hiring push**: As of August 2026, CloudX is actively hiring for technical roles (Senior ML Engineer, Senior Data Engineer, Senior Fullstack, Senior Infrastructure Engineer, Senior Android SDK Engineer, Quality Engineer) and business roles (Business Development, Partner Success, Revenue Analytics). ## Sources 1. [cloudx.ai](https://www.cloudx.ai/careers) – Careers page (description, roles) 2. [linkedin.com](https://www.linkedin.com/company/cloudxinc) – Company overview, financials, headcount, locations, recent posts 3. [builtin.com](https://builtin.com/company/cloudx) – Company profile, office locations, founding year 4. [builtinsf.com](https://www.builtinsf.com/company/cloudx/jobs) – Job listings, details on roles and culture ## Other roles at CloudX - [Partner Success (Vietnamese Speaker)](https://feeny.ai/job/partner-success-vietnamese-speaker-cloudx-apac-yhjc4g8g9z57) — APAC - [Partner Success, EMEA](https://feeny.ai/job/partner-success-emea-cloudx-emea-60bfb6c95mdb) — EMEA - [Senior Machine Learning Engineer](https://feeny.ai/job/senior-machine-learning-engineer-cloudx-global-fb0dexdb7jhd) — Global - [Revenue Operations](https://feeny.ai/job/revenue-operations-cloudx-global-ptw12s9v3mx2) — Global - [Business Development, EMEA](https://feeny.ai/job/business-development-emea-cloudx-emea-x26w5e2a4a7t) — EMEA - [Forward Deployed Engineer (EMEA)](https://feeny.ai/job/forward-deployed-engineer-emea-cloudx-global-1cbag5c9f64j) — Global - [Senior iOS SDK Engineer](https://feeny.ai/job/senior-ios-sdk-engineer-cloudx-global-8nsa3sjrf4jt) — Global - [Senior Android SDK Engineer](https://feeny.ai/job/senior-android-sdk-engineer-cloudx-global-5yyfewarynj6) — Global - [Senior Infrastructure Engineer](https://feeny.ai/job/senior-infrastructure-engineer-cloudx-global-ee5dpedjd01d) — Global - [Senior Fullstack Engineer](https://feeny.ai/job/senior-fullstack-engineer-cloudx-global-0a82943y6q8k) — Global