Software Engineer II (Mobile Developer - Android/Kotlin) - Mobile App Growth

Klaviyo • Boston, MA

3d • $116,000 - $174,000 • Remote

About The Position

Klaviyo is hiring a Software Engineer II for its Mobile App Growth team, which builds and maintains the mobile SDKs and related products that help customers create personalized experiences for mobile app users. The role is primarily focused on Android development with Kotlin, while also contributing as needed to the team’s iOS, React Native, Expo, and Flutter SDKs and to backend services, infrastructure, and embedded web interfaces. The team’s adjacent products include in-app messaging, universal linking, geofencing, and new work such as mobile inbox. The position is open to fully remote work within the United States and may involve up to 10% travel, coordinated in advance.

The engineer will design, build, ship, and maintain Android SDK features used across third-party apps, devices, and operating-system versions. They will also help diagnose customer-reported issues, collaborate across product and engineering teams to keep platform behavior consistent, and contribute to code quality, reviews, documentation, sample apps, and integration guides. The role calls for an Android-first engineer with production experience who can work independently, take ownership of outcomes, and adapt to other areas of the team’s technical surface area.

The base salary range for US locations is $116,000–$174,000 USD. Total compensation may also include an annual cash bonus, equity, sign-on payments, and eligible health, welfare, and wellbeing benefits. The specific salary or OTE range for a preferred location can be provided by a recruiter.

Requirements

• 1–3 years of professional Android development experience; Kotlin experience is ideal.
• Experience shipping and maintaining production Android code.
• Solid understanding of the Android lifecycle, threading, and Gradle.
• Familiarity with testing practices, including unit, integration, and instrumentation testing, and with mobile CI/CD.
• Ability to work independently, identify the right questions, and drive problems through to completion.
• Strong ownership of outcomes from end to end.
• Willingness to work across Android, iOS, backend, or frontend areas within the team’s ownership.
• Ability to debug across a wide range of devices, OS versions, and third-party app environments.
• Clear communication skills for working with customers’ engineering teams and internal colleagues.
• Comfort with webviews and location services, and openness to learning new technologies as the team’s scope grows.

Nice To Haves

• Experience building or maintaining an SDK or library rather than only an app.
• Exposure to iOS/Swift or backend services.
• Familiarity with push notification or messaging systems.
• Open-source contributions.

Responsibilities

• Design, build, and ship Android SDK features and fixes for use across third-party apps, devices, and operating-system versions.
• Contribute to the iOS, React Native, Expo, and Flutter SDKs when team priorities require it.
• Contribute to backend services, infrastructure, and embedded web UI supporting in-app messaging, universal linking, geofencing, and mobile inbox.
• Diagnose and resolve SDK issues reported by customers.
• Write clean, well-tested code and participate in code and design reviews.
• Collaborate with product and engineering teams to maintain consistent tracking and messaging behavior across platforms.
• Contribute to customer-facing documentation, sample apps, and SDK integration guides.

Benefits

• The total compensation package may include participation in the company’s annual cash bonus plan.
• Equity may be included in the total compensation package.
• Sign-on payments may be included in the total compensation package.
• A comprehensive range of health, welfare, and wellbeing benefits is available based on eligibility.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed