About us

Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/

About the role

As a Lead Android Engineer, you will own the technical direction of our Android platform, set engineering standards, and mentor a team of engineers while remaining hands-on with the codebase. You will drive architecture decisions, ensure scalability and performance, and partner with product and cross-functional leadership to shape the mobile roadmap.

Key Responsibilities

Define and own the technical vision, architecture, and long-term roadmap for the Android platform.
Lead, mentor, and grow a team of Android engineers; set coding standards and review practices.
Make high-impact architectural decisions and drive modularization/scalability across the codebase.
Own CI/CD strategy, release management, and deployment reliability.
Partner with product and design leadership to translate business goals into technical execution.
Establish observability, performance budgets, and quality gates.
Remain hands-on: contribute to critical features and complex problem-solving.

Qualifications

8+ years of Android development experience, including 2+ years in a lead or tech-lead capacity.
Proven track record shipping and scaling B2C subscription-based apps at significant user volume.
Deep expertise in Kotlin, coroutines/Flow, and advanced language features; ability to set idiomatic standards across a team.
Mastery of Google Play Billing at scale, subscription monetization architecture, entitlement validation, RTDN pipelines, paywall experimentation, and pricing/offer strategy.
Strong architectural leadership: large-scale multi-module Gradle architectures, build optimization, design systems, and cross-team API contracts.
Experience owning CI/CD at scale (GitHub Actions, Bitrise, Gitlab CI), automated release trains, staged rollouts, and signing/key management.
Deep performance engineering: startup optimization, Baseline Profiles, memory/jank diagnosis, and R8/ProGuard optimization.
Comprehensive testing strategy ownership: unit, UI (Compose/Espresso), and integration testing with meaningful coverage goals.
Experience integrating AI-driven product features and championing AI-assisted development practices across a team.
Strong technical leadership, mentorship, stakeholder communication, and cross-functional collaboration skills.

Location

Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Benefits

Discover the perks of being part of our vibrant team! We offer:

Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, witho

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