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

About the Role

Klaviyo's Mobile App Growth team helps customers build personalized relationships with mobile app users. Within the Mobile App Marketing organization, the team owns native and wrapper SDKs across iOS, Android, React Native, Expo, and Flutter, along with SDK-enabled products such as in-app messaging, universal linking, geofencing, and new mobile inbox functionality.

This Software Engineer II role primarily owns Android SDK development, with opportunities to contribute across the team's mobile, backend, infrastructure, and web work. The role is open to fully remote work within the United States and is listed in Boston, Massachusetts.

Responsibilities

• Design, build, and ship Android SDK features and fixes across third-party apps, operating system versions, and devices.
• Contribute to iOS, React Native, Expo, and Flutter SDKs as priorities require.
• Contribute to backend services, infrastructure, and embedded web interfaces supporting in-app messaging, universal linking, geofencing, and new products.
• Diagnose and resolve customer-reported SDK issues.
• 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.
• Develop documentation, sample apps, and integration guides for customers.

Qualifications

• 1–3 years of professional Android development experience, ideally including Kotlin.
• Experience shipping and maintaining production Android code, with a solid understanding of the Android lifecycle, threading, and Gradle.
• Experience debugging across devices, operating system versions, and third-party application environments.
• Familiarity with unit, integration, and instrumentation testing and mobile CI/CD.
• Comfort with webviews and location services, and willingness to learn technologies such as Python, React, and AWS.
• Self-motivation, end-to-end ownership, adaptability, curiosity, and a quality-focused approach.
• Clear communication with internal teams and customers' engineers.
• Willingness to contribute to iOS, backend, or frontend work without needing expertise in every area.

Preferred Experience

• Building or maintaining an SDK or library.
• Exposure to iOS/Swift or backend services.
• Familiarity with push notification or messaging systems.
• Open-source contributions.

Technology Environment

• iOS and Swift; Android and Kotlin; React Native; Flutter.
• React, TypeScript, and Redux.
• Python and Django.
• MySQL, Redis, and DynamoDB.
• AWS, including EC2, RDS, and Aurora; Terraform.

Compensation and Benefits

• Annual US base salary range: $116,000–$174,000 USD. Actual base pay depends on relevant skills, experience, education or training, and work location.
• Eligible compensation may include an annual cash bonus, equity, and sign-on payments, along with health, welfare, and wellbeing benefits.
• Recruiters can provide location-specific compensation details.

Travel and Application Rules

• Up to 10% travel may be required for onboarding, client or partner work, team meetings, and industry events. Travel is coordinated in advance.
• Interview participants must read and follow Klaviyo's guidelines for using AI during interviews. Responsible AI use includes privacy, security, bias awareness, and human oversight. Accommodations are available as needed.
• Submitting an application consents to personal data processing under Klaviyo's Job Applicant Privacy Notice; candidates who do not consent should not submit an application.
• Klaviyo will not request payment, bank details, or personal financial information during the application process. Legitimate postings are available on its official careers site; applicants should be cautious of offers from non-company email addresses, messaging platforms, or unsolicited calls.
• Massachusetts law prohibits requiring or administering lie detector tests as a condition of employment or continued employment.