Senior Android Engineer, Growth

What you will accomplish:

Who you are:

• Seasoned craftsperson. You've shipped production Android at scale, can navigate ambiguity, and know when "good enough" is the right call vs. when to invest in durability.
• AI-powered builder. You don't just use AI tools — you advocate for them. You've integrated AI-assisted workflows into your development process and you're motivated to explore how AI can improve both how we build and what we build.
• Data-driven operator. You believe in the scientific method — hypothesize, measure, learn — and you design clean instrumentation to power reliable insights.
• Experiment evangelist. You don't just run experiments — you champion the culture. You push for clean hypotheses, resist shipping without measurement, and help the team learn faster.
• Pragmatic optimizer. You embrace a bias for action. In Growth, the fastest path to good enough is often the best way forward.
• Curious collaborator. You thrive on cross-functional teamwork and embrace unexpected hurdles with an open mindset.
• Champion of inclusion. You create space for diverse voices and help guide the team toward the best solutions.
• Low ego, high integrity. You value doing what's right over being right, and you're comfortable course-correcting when a better path arises.

What you bring:

• 5+ years of Android development experience, building and shipping apps at scale.
• Deep proficiency in Kotlin, including coroutines and Flow, and Android development best practices including managing Android core components (Activities, Services, etc.) and their lifecycles.
• Experience with Android app architecture patterns such as MVVM, uni-directional data flow, and dependency injection frameworks (Hilt or Dagger).
• Hands-on experience with in-app purchases, subscription flows, or related payment features.
• Experience designing and analyzing A/B experiments — not just toggling feature flags, but owning the hypothesis-to-insight loop.
• Experience integrating feature flagging tools such as LaunchDarkly or Optimizely.
• Strong experience designing instrumentation schemas and ensuring data quality for experiment analysis (Firebase Analytics, Amplitude, Segment, etc.).
• Enthusiastic adopter of AI-assisted development — you actively use AI tools (Copilot, Claude, Cursor, etc.) in your daily workflow to accelerate coding, debugging, and problem-solving.
• Familiarity with Android build tools (Gradle) and CI/CD pipelines.
• Experience with JUnit, MockK, and a quality-first testing mindset.
• Proven experience leading feature delivery end-to-end within a cross-functional team environment, including technical planning and stakeholder alignment.
• Track record of elevating teammates — code reviews, pairing, sharing patterns — even without a formal leadership title.

Nice-to-Haves (Growth Specific)

• Experience with Jetpack Compose and Material theming standards.
• Familiarity with deep linking and attribution for user acquisition flows.
• Experience building or optimizing cross-platform signup and subscription flows (Android, iOS, Web) to balance friction, compliance, and revenue impact.
• Exposure to cross-platform collaboration (Web, API, iOS) for consistent Growth experiments.
• Working knowledge of third-party SDK integrations (payments, analytics, feature flagging, experimentation).
• Experience working across multiple Android apps or product lines simultaneously.
• Familiarity with internationalization (i18n) — FamilyWall serves European markets, so localization awareness is a plus.
• Familiarity with generative AI engineering workflows — prompt engineering, integrating LLM APIs into product features, or building AI-augmented user experiences.

• Medical: In Tandem pays 100% of the premium for employees AND 99% for all additional family members 
• 401k: Up to a 4% match with immediate vesting   
• Paid leave for all new parents   
• Learning & Development stipend for employees   
• Paid Time Off: 11 Holidays + Winter Break (3 Days) + Volunteer Time Off (1 Day) + Floating Holiday (1 Day) 
• Personal Time Off:  15 days for 0-1 years of employment + 20 days for 1-3 years of employment  
• Supportive and flexible working environment – work from anywhere!