Senior Android Engineer

Sunweb Group; Oña; Hybrid; EUR 65,000 - 78,000; Full time

Benefits offered by this job

Hybrid work model

Office furniture provided

IT equipment provided

Career development plan

Coaching sessions

Travel allowances

Brand discounts

Job summary

Sunweb Group is seeking a Senior Android Engineer to own features from design to release, focusing on Kotlin and Jetpack Compose. You will join Team Cuba – Mobile, collaborating with iOS and backend engineers to deliver high-quality native Android experiences across Europe in a flexible hybrid setup.

You will mentor peers, drive architecture decisions, and evolve a modular codebase while integrating payments and travel-related journeys.

Qualifications

• Several years (5+) of strong Kotlin experience in production Android applications at meaningful scale.
• Production experience with Jetpack Compose.
• Solid knowledge of Coroutines, Flow, state management and the Android lifecycle.
• Practical experience with clean or layered architecture and dependency injection.
• Experience with Gradle in a multi-module project, including build types or flavours.
• Automated testing, Git workflows, code reviews and CI as standard engineering habits.
• Play Console release-management experience, including signing, versioning and staged rollouts.
• Experience consuming REST APIs and designing reliable caching behaviour.
• Experience integrating third-party SDKs or APIs, ideally including payment services.
• Professional working proficiency in English.
• A proactive, pragmatic and low-ego ownership mindset.

Responsibilities

• Build and evolve customer-facing Android experiences using Kotlin and Jetpack Compose.
• Own features from refinement and technical design through testing, Play Store release and production monitoring.
• Act as a technical reference for Android through code reviews, architectural decisions and mentoring.
• Align closely with iOS and backend engineers to deliver platform parity without sacrificing native quality.
• Evolve a modular Gradle codebase using pragmatic clean-architecture principles.
• Apply dependency injection, Coroutines and Flow effectively.
• Integrate and protect revenue‑critical customer journeys involving payments, excursions, transfers etc.
• Use Firebase, Analytics and New Relic to understand user behaviour and improve app health.
• Use modern and agentic coding tools pragmatically to improve productivity and code quality.

Skills

Kotlin

Jetpack Compose

Coroutines

Flow

Clean architecture

Dependency injection

Gradle (multi-module)

REST APIs

Payment integrations

English proficiency

Android lifecycle

Code reviews

CI/CD

Play Console

GitHub Actions

Tools

Firebase

New Relic

Ktor

GitHub Actions

Gradle

DataStore

Kodein

Copilot

Job description

Build smooth holiday journeys with Kotlin, Compose and serious ownership

At Sunweb Group, our Android app supports customers from holiday inspiration through booking and travel.

As our Senior Android Engineer, you will own features from the initial Figma design through development, testing, release and monitoring. You will work in Kotlin and Jetpack Compose on a long-lived codebase that is actively modernised—with quality, stability and customer experience at the centre of every decision.

Location: Girona preferred / Rotterdam possible
Way of working: Flexible hybrid
Contract: Full-time
Team: Team Cuba – Mobile

Your impact

• Build and evolve customer-facing Android experiences using Kotlin and Jetpack Compose.

• Own features from refinement and technical design through testing, Play Store release and production monitoring.

• Act as a technical reference for Android through code reviews, architectural decisions and mentoring.

• Align closely with iOS and backend engineers to deliver platform parity without sacrificing native quality.

• Evolve a modular Gradle codebase using pragmatic clean-architecture principles.

• Apply dependency injection, Coroutines and Flow effectively.

• Integrate and protect revenue‑critical customer journeys involving payments, excursions, transfers etc.

• Use Firebase, Analytics and New Relic to understand user behaviour and improve app health.

• Use modern and agentic coding tools pragmatically to improve productivity and code quality.

What about the team?

You will join Team Cuba, our mobile team. The team is growing to two Android engineers, two iOS engineers, one backend engineer, a Product Owner and an Engineering Lead.

Most engineers are based in Girona, while the Product Owner works from Rotterdam. We work flexibly and communicate deliberately across locations.

As our second Android engineer, you will bring independent ownership from day one and help make the platform and team more resilient.

Our tech stack

Kotlin · Jetpack Compose · Gradle · Coroutines · Flow · Kodein · Ktor · DataStore · Compose Navigation · GitHub Actions · Fastlane · Firebase · New Relic · Azure · Figma · Google Play Console · Copilot

What you bring

• Several years (5+) of strong Kotlin experience in production Android applications at meaningful scale.

• Production experience with Jetpack Compose.

• Solid knowledge of Coroutines, Flow, state management and the Android lifecycle.

• Practical experience with clean or layered architecture and dependency injection.

• Experience with Gradle in a multi-module project, including build types or flavours.

• Automated testing, Git workflows, code reviews and CI as standard engineering habits.

• Play Console release‑management experience, including signing, versioning and staged rollouts.

• Experience consuming REST APIs and designing reliable caching behaviour.

• Experience integrating third‑party SDKs or APIs, ideally including payment services.

• Professional working proficiency in English.

• A proactive, pragmatic and low‑ego ownership mindset.

Nice to have

• Experience with high‑traffic consumer, e‑commerce or travel applications.

• Accessibility, localisation and performance‑optimisation experience.

• Has design skills and mobile UI/UX experience.

• Spanish, Catalan or Dutch language skills.

Why join our journey?

• Play a central role in Android architecture and technical direction.

• Work on a modernising and well‑maintained application where engineering judgement matters.

• Make a direct impact on customer journeys where reliability genuinely matters.

• Collaborate closely with iOS and backend engineers while retaining the strengths of native Android.

• Help shape digital holiday experiences used by customers across Europe.

What we offer

For a Dutch contract (based in our Rotterdam office):

• Monthly gross salary between €5400 and €6500 plus 6 ATV days (based on full‑time employment, excluding 8% holiday allowance). Please note: ATV days do not apply to part‑time contracts.

• We enjoy the journey so enjoy 25 holidays based on fulltime employment.

For a Spanish contract (based in our Girona office):

• Yearly gross salary between €56.000,- and €71.000- (based on full‑time employment)

• We enjoy the journey so enjoy 23 holidays based on fulltime employment.

The final offer depends on your experience and local employment contract.

Additionally, we offer:

• Enjoy up to 20% off when booking with our brands for you, your family, and your friends.

• As an international company we support a hybrid way of working. We provide you with office furniture and IT equipment.

• A personalized Reflect & Develop Plan to support your career growth.

• Benefit from coaching sessions designed to support your well‑being.

• Receive work‑from‑home and travel allowances to ease your daily routine.

Application deadline: 31 October

Sunweb Group is an equal opportunity employer, which means we do not discriminate in any way. We celebrate diversity and are committed to creating an inclusive and safe environment for all employees.

As part of our recruitment process, we use AI-supported tools to assist recruiters in matching candidates to job requirements. Final hiring decisions are always made by human recruiters.