Senior Software Engineer - SDK

About Moloco

Moloco builds some of the most powerful AI advertising solutions in the world. Our name—short for “machine learning company”—reflects our core mission: democratizing access to the advanced AI that has historically been reserved for tech giants. Led by machine learning pioneers who built successful ad systems at Google, including YouTube’s monetization engine and key search advertising technologies, we are transforming how businesses grow and compete in the digital economy. Moloco’s planet‑scale machine learning platform powers a suite of solutions for advertising growth and monetization, including Moloco Ads for mobile app marketers and Moloco Commerce Media for retailers and marketplaces. We are headquartered in Silicon Valley with offices worldwide.

About the Role

You will be building Moloco’s mobile Ads SDK that enables publishers (app developers) to monetize their mobile applications. Your work will make a direct impact on Moloco’s revenue and will be highly cross‑functional, spanning client SDK, backend integrations, and cross‑platform tooling. You may work directly with external customers and collaborate closely with engineering teams across our global offices.

Responsibilities

• Design, architect, and build a state‑of‑the‑art Ads SDK for Moloco’s supported platforms.
• Keep up to date with the latest iOS updates and maintain the SDK.
• Lead technology evolution and requirements across prominent app platforms, contributing to shared logic and architecture decisions that span iOS and Android.
• Partner with backend and infrastructure teams on the APIs, telemetry, and services that power the SDK end‑to‑end.
• Help customers with SDK integrations, including maintaining customer‑facing SDK documentation.
• Mentor junior engineers and provide valuable feedback to grow the team.
• Collaborate with cross‑platform teams in Seattle, Seoul, London, Beijing, and San Francisco to develop new features and functionality for customers.

Requirements

• Bachelor’s degree or above in Computer Science or an equivalent technical degree.
• 5+ years of experience as a software engineer, including strong experience with iOS.
• Proficiency in Swift and/or Objective‑C.
• Expert‑level understanding of multithreading and networking.
• Understanding of the internals of iOS, compilers, and optimization for lower‑power devices.
• Full‑stack curiosity – comfortable working across client, server, and tooling layers, not just native UI code.
• Experience with agile methodologies and high‑level design principles.
• A passion for mobile platforms and staying up‑to‑date with the latest platform developments.

Preferred Skills

• Experience with Android development (Kotlin/Java) or cross‑platform frameworks (React Native, Flutter, Kotlin Multiplatform); dual iOS/Android fluency is a strong plus.
• Experience building and distributing CocoaPods, Carthage, and/or Swift Package Manager libraries.
• Experience publishing apps to the App Store and/or Google Play.
• Experience with MRAID and/or VAST.
• Experience building and distributing React Native and/or Unity plugins.
• Backend or full‑stack experience is a plus.

Benefits

• Medical, dental, and vision insurance.
• 401(k) plan with company match.
• Short‑term and long‑term disability coverage.
• Basic life insurance.
• Well‑being benefits and perks.
• Up to 12 scheduled paid holidays per calendar year.
• One “Thrive Day” off per quarter.
• Flexible Time Off (FTO) for all employees.
• Potential bonus and equity awards, determined by performance and plan terms.

Pay

Salary ranges are location‑based:

• Region A (Menlo Park, New York, San Francisco Bay Area, New York Metro): $188,000 — $235,000 USD.
• Region B (Seattle, Los Angeles/Orange County, San Diego, Austin, Boston, Washington DC Metro, Miami): $169,200 — $211,500 USD.
• Region C (All other U.S. locations): $159,800 — $199,750 USD.