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Software Engineer II (Mobile Developer - Android/Kotlin) - Mobile App Growth
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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, a diverse group of accomplished engineers, focuses extensively on developing new, greenfield projects within the mobile application domain. Their work is cross-functional, spanning various mobile platforms, and includes developing full-stack solutions to support product features exposed to mobile users via our SDKs.
Over the past year, the Mobile App Growth team at Klaviyo has introduced new mobile-first features (like geofencing and in-app forms) and enhanced Klaviyo’s mobile integration offerings. This expansion has augmented the scope of the team’s responsibilities. With new products to cultivate and integrations to support, the team requires a highly capable software engineer to help manage the increasing demands within Klaviyo's mobile ecosystem.
This engineer will contribute to the expansion and maintenance of the team’s mobile SDK offerings, furthering current product features and extending Klaviyo’s reach beyond traditional email marketing into comprehensive mobile engagement.
How You'll Make an Impact
- You will be a core member of the Mobile App Growth team, working on impactful mobile experiences making mobile integrations a core pillar of Klaviyo’s offerings
- Work closely with product to provide the best experience for our customers.
- Take ownership of projects from inception to release.
- Work across different mobile technologies
- Work in the Django framework to help build out a pipeline for rendered mobile experiences.
Who you are
Deep experience modern mobile development (either Android, iOS or cross-platform experience)
- Open to working with different technologies: Python, React, AWS, GoLang (prior experience not required but nice to have)
- Have a proven track record of leading projects and collaborating well with the wider team
- Experience working with mobile webviews and location services.
- Comfortable leveraging AI technologies effectively in personal contributions.
- Self-starter - As the member of the team, we are looking for someone who can bring with them expertise in mobile development.
- Adaptability - We will be working not just in native SDKs but also backend and frontend Klaviyo stacks, dev tooling and possible expansion into tertiary SDKs in the future.
- Ambition - We are looking for people that can take an idea and have the ambition to headline it in the future.
- Learning - To be always learning is a core value at Klaviyo and this role will require someone excited to learn new technologies and expose themselves to new approaches
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
We use Covey as part of our hiring and / or promotional process. For jobs or candidates in NYC, certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on April 3, 2025.
Please see the independent bias audit report covering our use of Covey here
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.
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.
Ready to apply?
Apply to Klaviyo
At Compass, our mission is to help everyone find their place in the world. Founded in 2012, we’re revolutionizing the real estate industry with our end-to-end platform that empowers residential real estate agents to deliver exceptional service to seller and buyer clients.
About the Role
The Client Infrastructure team provides the foundational platform, tooling, and infrastructure that empowers our iOS engineering teams to build, deploy, and ship features with confidence, speed, and quality. As a Senior Software Engineer on the iOS Platform sub-team, you will be the technical leader shaping the future of iOS development at Compass, fostering a culture of technical excellence and developer empowerment across 40+ iOS engineers.
You are a pragmatic visionary who can "poke holes" in complex iOS architectures to prevent future technical debt, simplify sprawling build systems, and deliver scalable, resilient platform solutions that save thousands of engineering hours. Beyond execution, you serve as the iOS technical leader and mentor, guiding talented iOS engineers while driving impactful, high-complexity platform projects. You lead by example - innovating, teaching, and shaping the future of iOS engineering at Compass.
This role requires deep iOS platform expertise combined with strategic thinking about how to force-multiply an entire iOS organization through excellent platform infrastructure.
Responsibilities
- Drive the technical roadmap for iOS platform infrastructure, championing best-in-class developer experience and modern iOS development practices across 40+ iOS engineers
- Architect, scale, and maintain iOS platform core capabilities including build systems , test infrastructure, API frameworks, and shared libraries to meet the quality and performance needs of all iOS product teams
- Own iOS testing strategy and infrastructure that empowers teams to maintain strong testing standards through intelligent automation, AI-enhanced testing tools, and quality gates that enforce best practices
- Lead iOS platform modernization initiatives including Swift 6 migration strategy, adoption of Kotlin Multi Platform, and technical debt reduction while championing coding standards and architectural patterns
- Optimize iOS build system infrastructure (Bazel) serving 40+ engineers through build time reduction, caching strategies, and developer productivity tools that guide engineers along the "golden path"
- Establish and refine standards for iOS app performance, reliability, and monitoring (crash-free rates, launch times, runtime performance) while partnering with observability teams on iOS-specific infrastructure
- Design and maintain high-quality internal iOS tools, CLIs, and APIs that improve developer productivity and operational efficiency through automation and intelligent tooling
- Mentor iOS engineers on platform engineering best practices, collaborate with Android and Web platform teams on cross-platform opportunities, and partner with stakeholders to proactively identify platform needs
Basic Qualifications
- BS in Computer Science, Software Engineering, or equivalent professional experience
- 7+ years of professional iOS software development experience with significant focus on platform engineering, infrastructure, or tooling
- Expert-level Swift proficiency and deep understanding of iOS SDK, frameworks, and platform evolution
- Proven ability to design and build complex iOS platform systems that serve multiple teams and scale across an organization
- Deep expertise in iOS testing frameworks and automation (XCTest, UI Testing, snapshot testing, test orchestration)
- Strong experience with iOS build systems - Bazel strongly preferred; deep understanding of build optimization, dependency management, and modularization
- Demonstrated ability to influence technical decision-making and lead complex, multi-quarter platform initiatives
- Track record of modernizing legacy iOS systems and successfully deprecating redundant infrastructure
Preferred Qualifications
- Experience owning iOS platform infrastructure at scale (build systems, test frameworks, CI/CD pipelines, shared libraries) serving multiple teams
- Experience with using cross platform development frameworks such as Kotlin Multi-Platform, React Native, and/or Flutter in a scaled environment
- Deep knowledge of Bazel for iOS development, including BUILD file architecture, caching strategies, and remote execution
- Expertise with modern iOS architecture patterns (SwiftUI, Combine, async/await, Swift Concurrency) and performance optimization tools (Instruments, Xcode diagnostics)
- Ability to manage internal iOS platform as a product, treating iOS engineers as customers and building tools/frameworks successfully adopted by multiple teams
- Track record of driving outsized impact on engineering culture, developer experience, and organizational velocity through platform thinking
Why Join Client Infrastructure at Compass
- High-impact role: Your work directly enables 40+ iOS engineers and shapes iOS development for the entire company
- Technical leadership: Be THE iOS platform technical leader, driving strategy and architecture
- Innovation opportunity: Lead cutting-edge initiatives like AI-powered testing, Swift 6 migration, and adoption of Kotlin Multi Platform
- Collaborative environment: Work with talented iOS, Android, and Web engineers on cross-platform platform challenges, including integrating Kotlin Multiplatform (KMP) for shared modules
Modern tech stack: Work with latest iOS technologies, modern build systems, and AI-enhanced development tools
Compensation: The base pay range for this position is $131,000-$197,000; however, base pay offered may vary depending on job-related knowledge, skills, and experience. Bonuses and restricted stock units may be provided as part of the compensation package, in addition to a full range of benefits. Base pay is based on market location. Minimum wage for the position will always be met.
Perks that You Need to Know About:
Participation in our incentive programs (which may include eligible cash, equity, or commissions). Plus paid vacation, holidays, sick time, parental leave, and recharge leave; medical, tele-health, dental and vision benefits; 401(k) plan; flexible spending accounts (FSAs); commuter program; life and disability insurance; Maven (a support system for new parents); Carrot (fertility benefits); UrbanSitter (caregiver referral network); Employee Assistance Program; and pet insurance.
Ready to apply?
Apply to Compass