Software Engineer II (Mobile Developer AndroidKotlin) Mobile App Growth

At Klaviyo we value the unique backgrounds experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If youre a close but not exact match with the description we hope youll still consider applying. Want to learn more about life at Klaviyo Visit see how we empower creators to own their own destiny.

Why you should join the Mobile App Growth team

The Mobile App Growth teams mission is to enable Klaviyo customers to develop and maintain personalized relationships with their mobile app users through rich mobile app experiences. The team is part of the Mobile App Marketing org and owns Klaviyos mobile SDKs the foundational layer that enables customers to integrate Klaviyo into their mobile apps. We maintain native and wrapper SDKs across iOS Android React Native Expo and Flutter.

As a natural extension of the SDK the team also builds and maintains adjacent mobile products that are enabled by it:

• In-app messaging including the in-app messaging publishing and scheduling pipeline
• Universal linking universal links settings pages and web tier
• Geofencing

That product list keeps expanding this year alone the team is greenfielding several new features including mobile inbox. Were looking for passionate engineers who want to roll up their sleeves and grow beyond just Android into the other areas the team owns.

How youll make an impact

• Design build and ship features and fixes to the Android SDK your primary area of ownership used across a huge range of third-party apps and OS versions/devices.
• Pitch in on our other mobile SDKs (iOS React Native Expo and Flutter) when priorities call for it; you dont need to be an expert everywhere but you should be willing to get hands-on.
• Contribute to the backend services infrastructure and embedded web UI that power products like in-app messaging universal linking and geofencing including newer greenfield work like mobile inbox.
• Diagnose and resolve SDK issues reported by customers.
• Write clean well-tested code and participate in code and design review.
• Collaborate with product and other engineering teams to keep tracking and messaging behavior consistent across platforms.
• Contribute to documentation sample apps and integration guides that customers use to adopt the SDKs.

Who you are

• Android-first 1-3 years of professional Android development experience ideally including Kotlin; this is your core strength and primary focus.
• Self-motivated you dont need heavy oversight to make progress; you take a problem figure out the right questions and drive it to done.
• High ownership you treat outcomes as yours end-to-end not just the code you personally typed. As AI tooling raises how much one engineer can credibly own this matters more than it used to.
• Adaptable willing to pick up iOS backend or frontend work when it falls under the teams ownership; you dont need to be an expert everywhere.
• Production-tested experience shipping and maintaining production Android code with a solid grasp of the Android lifecycle threading and Gradle.
• Comfortable in the weeds used to debugging across a wide matrix of devices OS versions and third-party app environments since SDK work means you dont control the host app.
• Quality-minded familiar with testing practices (unit integration instrumentation) and CI/CD for mobile.
• Clear communicator youll work with customers engineering teams as well as your own.
• Curious comfortable with webviews and location services and open to picking up new technologies (Python React AWS) as the teams surface area grows.
• Bonus: experience building or maintaining an SDK/library (versus an app) exposure to iOS/Swift or backend services familiarity with push notification/messaging systems or contributions to open source.

Technologies We Use (not exhaustive)

• iOS (Swift)
• Android (Kotlin)
• React Native
• Flutter
• React TypeScript Redux
• Python Django
• MySQL Redis DynamoDB
• AWS (EC2 RDS Aurora) Terraform

***This is an in-office position and the expectation is to work from the Boston office five (5) days per week***