--- title: 'Senior Android SDK Engineer at CloudX' canonical: 'https://feeny.ai/job/senior-android-sdk-engineer-cloudx-global-5yyfewarynj6' type: 'job' last_seen: '2026-09-05' --- # Senior Android SDK Engineer at CloudX - **Company:** CloudX - **Location:** Global - **Employment:** full-time - **Work type:** remote - **Posted:** 2025-12-03 - **Last confirmed live:** 2026-09-05 - **Apply:** https://jobs.gem.com/cloudx/am9icG9zdDqPAWu1cxr3PmEuuTIdliI6 ## Job description Senior Android SDK 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 (acquired by AppLovin). 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 Our Engineering team is distributed and remote — spanning UTC-8 to UTC+6, with core working hours of roughly the US Eastern business day. 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 The Mobile team builds the core infrastructure that will power revenue for thousands of mobile apps. At scale, our SDK will run in production apps with hundreds of millions of daily active users, processing billions of ad requests per month. We're a small, high output team committing code daily. You'll own the critical path. The SDK is the first point of contact between publishers and CloudX's marketplace, so reliability and performance aren't optional. Every line of code you write affects real revenue for real businesses. We move fast, ship often, and measure everything. As a Senior Android SDK Engineer, your key responsibilities will be to: - Collaborate with the product team to design and implement core SDK features - Build and maintain integrations with third-party ad networks (Meta, Google AdMob, etc.) - Optimize SDK to be seamless in host apps: minimize startup impact, reduce binary size, manage resources efficiently, and handle errors gracefully without affecting app stability - Engage directly with publishers to diagnose real-world issues and improve SDK usability, reliability, and integration experience ## Who you are We encourage you to apply if you meet these requirements: - Proven experience building and maintaining production Android apps or SDKs with strong Kotlin proficiency - Expert-level knowledge of coroutines and async programming patterns - Deep understanding of Android SDK internals - Strong testing discipline - A genuine builder: Someone who codes daily, sweats the details, and has shipped complex systems, not just talked about them. You get energy from solving hard engineering problems yourself. - A clear, concise, communicator: You can take a messy problem and make it legible, explaining trade-offs to engineers, PMs, and execs without hand-waving. - A startup operator with good instincts: You know when to ship fast, when to slow down, and how to navigate ambiguity without waiting for perfect specs or marching orders. - An owner, not a passenger: You turn loosely defined problems into real solutions, care deeply about whether the product actually works, and use AI as a force multiplier, not a crutch. While not required, we’re particularly interested in candidates with: - Experience building developer-facing SDKs or libraries, including documentation, versioning, and integration support. - Cross-platform SDK experience with Flutter, React Native, or Unity development. - Mobile advertising experience: Understanding of ad mediation, waterfalls, etc. In general, we’re looking for people with grit, passion, and talent. If you’re not sure if this role is an exact fit, we encourage you to apply. Many members of our team have had interesting career paths and we relish the chance to work with extraordinary individuals. Pay and Benefits The annual US base salary range for this role, and other engineering roles, is $150,000 – $300,000. This salary range is broad in order to accommodate a wide range of candidates; the interview process will narrow it down based on a number of factors, including your experience, qualifications, and location. We offer equity compensation and top-tier medical, dental, and vision benefits. We also have a generous hardware budget for a computer, monitor, and other core equipment necessary to work effectively on a remote team. We care about the quality of your work more than the specific hours you spend getting it done, and try to minimize the number of synchronous meetings in favor of greater flexibility. There is no in-office requirement. ## 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 - [Quality Engineer](https://feeny.ai/job/quality-engineer-cloudx-global-xvn9b70pqckn) — 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 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