Senior Android Engineer — AI-Driven Consumer Growth

Sword; Portugal; On-site; EUR 50,000 - 79,000; Full time

Job summary

Sword is seeking an Android Engineer in Consumer Growth to build experiences that convert interest into lasting engagement across onboarding, subscriptions, and retention. You will collaborate with Product, Design, Data, Marketing, and backend engineers to ship experiments, measure impact, and evolve successful ideas into high‑quality Android experiences.

This role blends native Android engineering with product curiosity to decide what to improve, how to measure it, and what to build next,

Qualifications

• Experience shipping and maintaining production Android applications.
• Strong proficiency in Kotlin and experience building interfaces with Jetpack Compose.
• Solid understanding of Android architecture, lifecycle management, coroutines, state management, and navigation.
• Experience integrating APIs and handling loading, failure, and interrupted user journeys gracefully.
• Experience with automated testing, debugging, and performance analysis.
• Ability to instrument user journeys and use product data to inform engineering decisions.
• Good product judgment and attention to interaction quality, accessibility, and user trust.
• Ability to work across disciplines, communicate trade-offs, and own features from concept through production.
• Practical experience using AI in your engineering workflow and critically reviewing its output.
• Fluent English, written and spoken.

Responsibilities

• Build and improve Android experiences across onboarding, account creation, paywalls, subscriptions, and ongoing engagement;
• Create smooth transitions from acquisition campaigns and web journeys into the app through deep links and reliable navigation;
• Implement subscription purchase flows, purchase restoration, and entitlement handling in collaboration with backend engineers;
• Deliver controlled experiments using feature flags, targeted experiences, and accurate analytics instrumentation;
• Partner with Product, Design, and Data to identify friction, define experiment requirements, and evaluate results after release;
• Build reusable UI components and application foundations that make subsequent experiments easier to deliver;
• Maintain app performance, accessibility, stability, and responsive behavior across supported devices and Android versions;
• Own features through implementation, testing, release, monitoring, and iteration;
• Use AI tools to accelerate development while validating generated code and preserving engineering quality.

Skills

Android development

Kotlin

Jetpack Compose

Android architecture

Coroutines

Testing & performance

English (Fluent)

Product sense

Cross-functional collaboration

AI in engineering

Job description

Sword is seeking an Android Engineer in Consumer Growth to build experiences that convert interest into lasting engagement across onboarding, subscriptions, and retention. You will collaborate with Product, Design, Data, Marketing, and backend engineers to ship experiments, measure impact, and evolve successful ideas into high‑quality Android experiences.

This role blends native Android engineering with product curiosity to decide what to improve, how to measure it, and what to build next,