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

Posted 2 Hours Ago
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Boston, MA, USA
Hybrid
116K-174K Annually
Mid level
Consumer Web • eCommerce • Marketing Tech • Retail • Software • Analytics • Generative AI
Best place for ambitious people to learn and grow.
The Role
Build and maintain Klaviyo's Android SDK and adjacent mobile products (in-app messaging, universal linking, geofencing). Ship production-tested Android features, debug across devices and OS versions, contribute to other SDKs and backend services, write tests and docs, collaborate with product and engineering teams, and support customer integration issues.
Summary Generated by Built In

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 you’re a close but not exact match with the description, we hope you’ll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny.

Why you should join the Mobile App Growth team

The Mobile App Growth team's 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 Klaviyo's 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. We're looking for passionate engineers who want to roll up their sleeves and grow beyond just Android into the other areas the team owns.


How you'll 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 don't 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 don't 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 team's ownership; you don't 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 don't control the host app.
  • Quality-minded — familiar with testing practices (unit, integration, instrumentation) and CI/CD for mobile.
  • Clear communicator — you'll 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 team's 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***

Massachusetts Applicants:
It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Our salary range reflects the cost of labor across various U.S. geographic markets. The range displayed below reflects the minimum and maximum target salaries for the position across all our US locations. The base salary offered for this position is determined by several factors, including the applicant’s job-related skills, relevant experience, education or training, and work location.

In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. 

Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process.

Base Pay Range For US Locations:
$116,000$174,000 USD

This role may require up to 10% travel for purposes such as new hire onboarding, client or partner work if applicable, team meetings, and industry events. Travel is coordinated in advance.

Get to Know Klaviyo

We’re Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first-party data accessible and actionable like never before. We see limitless potential for the technology we’re developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators—ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you’re ready to do the best work of your career, where you’ll be welcomed as your whole self from day one and supported with generous benefits, we hope you’ll join us.

AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). We provide accommodations as needed. 

By participating in Klaviyo’s interview process, you acknowledge that you have read, understood, and will adhere to our Guidelines for using AI in the Klaviyo interview Process. For more information about how we process your personal data, see our Job Applicant Privacy Notice.

Klaviyo is committed to a policy of equal opportunity and non-discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex (including pregnancy), gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.

IMPORTANT NOTICE: Our company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non-company email addresses (@klaviyo.com), instant messaging platforms, or unsolicited calls.
 
By clicking "Submit Application" you consent to Klaviyo processing your Personal Data in accordance with our Job Applicant Privacy Notice.  If you do not wish for Klaviyo to process your Personal Data, please do not submit an application.  You can find our Job Applicant Privacy Notice here and here (FR).
 

Skills Required

  • 1-3 years professional Android development experience (Kotlin)
  • Proven experience shipping and maintaining production Android code
  • Strong understanding of Android lifecycle, threading, and Gradle build system
  • Familiarity with mobile testing practices (unit, integration, instrumentation) and CI/CD for mobile
  • Ability to debug across diverse devices, OS versions, and host app environments
  • Willingness to contribute to other mobile SDKs (iOS, React Native, Expo, Flutter) and pick up backend/frontend work
  • High ownership, self-motivated, and clear communicator (works with customers and internal teams)
  • Contribute to documentation, sample apps, and integration guides
  • Experience building or maintaining an SDK or library
  • Exposure to iOS/Swift, backend services, push notification systems, or open-source contributions

What the Team is Saying

Amit
Eva
Tai
Mads
Uche
Ben
Risa
Kit
Angela
Laksh
Laksh
Devin
Anthoney Kelley
Carmel
Carmel
Andrew Bialecki
Mohamed Ali

Klaviyo Compensation & Benefits Highlights

How does Klaviyo ensure its pay and bonus plans are competitive?

Klaviyo supports competitive pay through a total rewards approach that combines salary, equity, bonus opportunities, benefits, learning support and a performance culture tied to measurable impact. 

  • Competitive total rewards: Klaviyo’s benefits overview highlights competitive salaries, 401(k) match, employee referral bonuses, equity, an employee stock purchase plan, flexible paid time off, commuter/transit support, fitness reimbursements, mental and emotional wellbeing programming and learning support. External reviews reinforce the value of the package, with employees citing competitive pay, bonuses, RSUs, ESPP, health insurance, parental leave, unlimited PTO and learning stipends as meaningful parts of the employee experience.
  • Pay connected to impact and outcomes: Klaviyo’s handbook frames performance around ownership, clarity and measurable results. The value “Know the score” states that results matter more than effort alone, while “Drivers wanted” emphasizes proactive ownership and “Be meticulous in your craft” reinforces a high bar for work quality. That creates a compensation and recognition philosophy where strong outcomes, not just activity, are central to advancement and rewards.
  • Equity and long-term value: Equity is a visible part of Klaviyo’s rewards story. Klaviyo offers equity packages to all full-time employees, vesting over four years, and provides an employee stock purchase plan. That ownership opportunity sits within a growing business: in Q1 2026, Klaviyo reported $358 million in revenue, up 28% year over year, and raised full-year 2026 revenue guidance to $1.514 billion to $1.522 billion. Those business results give employees a clear connection between company performance, long-term growth and the value of ownership-based compensation.
  • Rewards supported by growth and development benefits: Klaviyo’s compensation package is paired with benefits that help employees grow their careers and build long-term value. K-Pro Learn, learning stipends, mentorship, Career Architecture and manager development programs support continued skill-building. A customer success manager noted that Klaviyo offers a learning stipend for job-related coaching or training, while employee survey insights show 78% of respondents feel they are gaining the skills and experience to grow their careers.
  • External signals:
    • Compensation Sentiment: External reviews frequently praise Klaviyo’s competitive salary, bonuses, equity, RSUs, ESPP, 401(k) match, learning stipend and generous benefits. (Glassdoor; Comparably)
    • Rewards Ratings: Comparably rates Klaviyo’s compensation an A and perks and benefits an A. (Comparably)
    • Employee Value Signals: Reviews highlight PTO, health insurance, parental leave, office amenities, learning support and work-life balance as part of the overall rewards package. (Glassdoor; Comparably)

Bottom line: Klaviyo keeps compensation competitive by combining salary, bonus opportunities, equity, ESPP, retirement support, benefits and learning resources with a culture that rewards ownership, measurable outcomes and long-term impact.

Klaviyo Insights

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The Company
Boston, MA
2,400 Employees
Year Founded: 2012

What We Do

Klaviyo (NYSE: KVYO) is the B2C CRM. Powered by its built-in data platform and AI, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps over 183,000 brands like Mattel, Glossier, Daily Harvest, and Liquid Death deliver 1:1 experiences at scale, improve efficiency, and drive revenue.

Why Work With Us

We refer to our employees as ‘Klaviyos’, and we make up a diverse community united around shared values: We’re curious, collaborative, driven, innovative, fun, and fully ourselves at work. No matter which team you join, your work won’t just impact Klaviyo. It’ll help empower our customers and enable creators across the globe to own their destinies.

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Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: 3 days a week
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