Ofertas de empleo para Kotlin

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada2 feb.

Teletrabajo Kotlin Git Android iOS Swift jUnit UX/UI

Sobre la posición 🚀
Buscamos desarrolladores Mobile con talento y experiencia técnica sólida para unirse a nuestro equipo global en una de las multinacionales líderes en Alemania. Formarás parte de un entorno altamente colaborativo, trabajando en productos digitales escalables que impactan a millones de usuarios. Buscamos perfiles especialistas en Android (Kotlin) o iOS (Swift), con capacidad para entender arquitecturas complejas y trabajar en un ecosistema 100% internacional y remoto.

Tu Misión 🎯
Desarrollar y mantener aplicaciones nativas de alta calidad para las plataformas Android e iOS.

Colaborar estrechamente con equipos multidisciplinares (Producto, UX/UI y Backend) en Alemania y otros países.

Asegurar el rendimiento, la calidad y la capacidad de respuesta de las aplicaciones.

Realizar revisiones de código y aplicar las mejores prácticas de ingeniería de software.

Participar activamente en la definición de nuevas funcionalidades y arquitectura técnica.

Requisitos Técnicos 🛠️
Experiencia: Entre 3 y 5 años de experiencia demostrable en desarrollo nativo.

Para perfiles Android: Dominio experto de Kotlin, Android SDK, Jetpack Compose y patrones de diseño (MVVM, Clean Architecture).

Para perfiles iOS: Dominio experto de Swift, Xcode, SwiftUI y manejo de dependencias (CocoaPods/SPM).

Herramientas: Experiencia con Git, CI/CD pipelines y consumo de APIs RESTful.

Calidad: Conocimientos en pruebas unitarias y automatizadas (JUnit, Espresso, XCTest).

Requisitos de Idioma y Soft Skills 🗣️
Alemán: Nivel mínimo B2 (capacidad para participar en reuniones técnicas y documentación).

Inglés: Nivel B2 (valorable para comunicación interna global).

Mentalidad proactiva, orientada a la resolución de problemas y capacidad para trabajar de forma autónoma en entornos remotos.

¿Qué ofrecemos? ✨
Flexibilidad Total: Trabajo 100% remoto desde cualquier lugar.

Tipo de contrato: Indefinido / Jornada completa
Entorno Multinacional: Proyectos de gran escala con tecnología de vanguardia.

Crecimiento: Plan de carrera profesional y formación continua.

Cultura Alemana: Estabilidad, eficiencia y un equilibrio real entre vida profesional y personal.

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada2 feb.

Jenkins Kotlin Git Android REST jUnit Retrofit

Multinacional catalana del sector retail
S’incorpora un/a Android Developer amb sòlida experiència en el desenvolupament d’aplicacions nadiues i en l’ús de l’ecosistema modern d’Android. El/la professional formarà part d’un equip tècnic multidisciplinari responsable de l’evolució d’una aplicació mòbil d’alt impacte i gran volum d’usuaris, contribuint tant a la implementació de noves funcionalitats com a la millora contínua de l’arquitectura i del rendiment.

El rol requereix coneixement profund de Kotlin, experiència amb arquitectures modulars i capacitat per treballar en entorns d’alta exigència tècnica. El model de treball és 50% en remot amb presència regular a les oficines central del Vallés Occidental

Responsabilitats tècniques

Desenvolupar i mantenir funcionalitats nadiues en Kotlin seguint patrons d’arquitectura moderna (MVVM, Clean Architecture).
Participar en la definició i evolució de l’arquitectura modular de l’app.
Implementar fluxos de dades robustos utilitzant Coroutines, Flow i components de Jetpack.
Integrar serveis backend mitjançant REST APIs, gestionant dades amb Retrofit, OkHttp i mecanismes de caching.
Garantir la qualitat del codi mitjançant testing automatitzat (unitari i instrumentalitzat).
Contribuir a la millora del pipeline de CI/CD i a la definició de bones pràctiques de desenvolupament.
Realitzar code reviews i aportar criteri tècnic en decisions d’arquitectura i escalabilitat.
Monitoritzar i optimitzar el rendiment, ús de memòria i estabilitat de l’aplicació.

Requisits
Imprescindibles
4–5 anys d’experiència en desenvolupament Android nadiu.
Domini de Kotlin i coneixement sòlid de l’SDK d’Android.
Experiència amb Android Jetpack (ViewModel, LiveData/Flow, Room, Navigation, WorkManager...).
Coneixement d’arquitectures netes i patrons de modularització.
Experiència amb integració d’APIs REST i gestió eficient de dades.
Ús habitual de Git i metodologies de treball col•laboratives.
Experiència en testing (JUnit, Espresso, MockK o equivalents).
Valorables
Experiència amb Jetpack Compose.
Experiència en apps d’alt trànsit o amb gran volum de dades.
Coneixements de CI/CD (Bitrise, Jenkins, GitHub Actions).
Experiència amb analítica mòbil, feature flags o A/B testing.
Familiaritat amb KMM o entorns multiplataforma.

Oferim
Model híbrid amb 50% de teletreball.
Participació en un producte digital estratègic amb gran visibilitat.
Equip tècnic sènior i cultura d’enginyeria orientada a bones pràctiques.
Entorn internacional i orientat a la innovació.
Pla de desenvolupament professional i formació contínua.

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada22 ene.

API Java Kotlin Android iOS DevOps Office

Pioneer of online flash sales since 2001 and key player in European e-commerce, Veepee collaborates with over 7,000 brands to offer highly discounted products available for a limited time. Operating across various sectors, including fashion, home, wine, travel or beauty... Veepee achieved a turnover of 3.3 billion euros incl. VAT in 2024 and employs 5,000 staff members across 10 countries.

JOB DESCRIPTION

Today we´re looking for an experienced Android Tech Lead who will lead our Android Chapter at Veepee.

As the Android Tech Lead, you will be responsible for guiding the technical direction of the entire Android platform across all product teams. You will lead and mentor Android developers distributed across various squads (such as Navigation, Orderpipe, Sales, and more), ensuring consistency, quality, and innovation across all Android initiatives.

This is a strategic role that combines hands-on technical expertise with leadership responsibilities, where you´ll shape the future of our Android applications while fostering a culture of excellence and continuous improvement within the Android community.

TASKS
- Lead the Android Chapter, providing technical guidance and mentorship to Android developers across multiple squads;
- Define and drive the Android technical strategy, architecture patterns, and technology roadmap;
- Establish and maintain Android coding standards, best practices, and development guidelines across the organization;
- Champion architectural decisions and ensure consistency across all Android projects;
- Facilitate knowledge sharing through tech talks, workshops, and documentation;
- Collaborate with Product Managers, Engineering Managers, and other Tech Leads to align technical decisions with business objectives;
- Conduct and coordinate code reviews, promoting high-quality code across all teams;
- Drive the adoption of new technologies and improvements to the Android ecosystem;
- Monitor and improve application performance, stability, and user experience across all Android products;
- Lead technical discussions and decision-making processes at the platform level;
- Ensure CI/CD processes are optimized and followed across all Android projects;
- Foster innovation and participate in prototyping new features and solutions;
- Support the recruitment process by evaluating technical candidates and defining hiring standards;
- Act as the primary point of contact for Android-related technical matters.

MUST HAVE skills
- At least 7+ years of experience in building Android applications with at least 2 years in a technical leadership or chapter lead role;
- Deep expertise in Kotlin and solid understanding of Java;
- Proven experience architecting and scaling Android applications in complex environments;
- Strong experience with modern Android architecture components;
- Advanced knowledge of dependency injection frameworks;
- Expert knowledge of Android Studio, Android SDK, and the Android ecosystem;
- Proven ability to implement and maintain CI/CD pipelines;
- Experience with reactive programming;
- Strong skills in unit and UI testing, with ability to define organization-wide testing strategies;
- Demonstrated ability to mentor, coach, and inspire developers at various levels;
- Excellent leadership and people management skills in a cross-functional environment;
- Strong communication and collaboration skills with both technical and non-technical stakeholders;
- Ability to influence and drive technical decisions across multiple teams;
- Fluent in English (written and verbal).

NICE TO HAVE skills
- Previous experience working in Agile/Scrum environments as a Chapter Lead or similar role;
- Experience with multi-module architecture and modularization strategies at scale;
- Knowledge of performance optimization techniques, tools, and monitoring solutions;
- Experience with A/B testing frameworks and feature flagging;
- Understanding of backend technologies and API design principles;
- Experience with mobile DevOps and release management processes;
- Familiarity with iOS development to facilitate cross-platform discussions.

BENEFITS
- Variable bonus;
- Dynamic and creative environment within international teams;
- The variety of self-education courses on our e-learning platform;
- The participation in meetups and conferences locally and internationally;
- Flexible Office with up to 2 days at home;

RECRUITMENT PROCESS
- 1 30-minute HR Screen with a VeepeeTech Recruiter
- 2 Technical Assessment
- 3 Technical exchange with Engineering Manager
- 4 Leadership & Chapter Culture Fit Interview
- 5 Final Interview with Lead IT

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada21 ene.

Java Kotlin Android iOS Gradle

Hey there!
We´re Fever, the world´s leading tech platform for culture and live entertainment,

Our mission? To democratize access to culture and entertainment. With our proprietary cutting-edge technology and data-driven approach, we´re revolutionizing the way people engage with live entertainment.

Every month, our platform inspires over 300 million people in +40 countries (and counting) to discover unforgettable experiences while also empowering event creators with our data and technology, helping them scale, innovate, and enhance their events to reach new audiences.

Our results? We´ve teamed up with major industry leaders like Netflix, F.C. Barcelona, and Primavera Sound, presented international award-winning experiences, and are backed by several leading global investors! Impressive, right?

To achieve our mission, we are looking for bar-raisers with a hands-on mindset who are eager to help shape the future of entertainment!

Ready to be part of the experience?

Now, let´s discuss this role and what you will do to help achieve Fever´s mission.

Behind the user-friendly iOS and Android apps and webpage that work across the world is the engineering team. We are in charge of creating, developing, improving, and maintaining all Fever services so that more people can have an amazing experience.
About the role

At Casfid (a Fever company), we build the technology that powers on-site experiences at some of the largest live events worldwide. Casfid is the RFID, access control and cashless payments technology provider of Fever Group, enabling millions of attendees to enjoy seamless, real-time event experiences.

Our Android applications are a critical part of Fever´s operational ecosystem, powering cashless payments, access control, ticketing, recharges and other on-site workflows. These applications run on smartphones, kiosks/totems and custom hardware devices designed in-house, and are used in large-scale, high-demand environments across multiple countries.

We are looking for an Android Developer to join our team and help us evolve our Android platform. You will work mainly with Kotlin, contribute to the progressive migration from Java, and help build scalable and reliable solutions used by millions of users in real time.

Key responsibilities
- Design, develop and maintain native Android applications, primarily using Kotlin, following Android best practices and Google design guidelines.
- Maintain and evolve existing Android applications built in Java, contributing to their progressive migration to Kotlin.
- Manage asynchronous workflows using Kotlin Coroutines and Flow, while maintaining existing implementations based on RxJava.
- Apply SOLID principles to ensure clean, maintainable and scalable code.
- Collaborate with the team to implement improvements using Jetpack libraries (Compose is a plus).
- Use tools such as Gradle and Fastlane to automate build, testing and deployment processes.
- Build software used at large-scale live events across 10+ countries, running on mobile devices, kiosks/totems and custom hardware for access control and cashless operations.
- Work closely with product, hardware and operations teams to deliver robust solutions in high-throughput, real-time environments.

About you
- 5+ years of experience as a native Android developer.
- Strong experience developing Android applications using Kotlin.
- Proven ability to read, understand and maintain Java code in a mixed Java/Kotlin codebase.
- Strong knowledge of the Android ecosystem: Android SDK, Android Studio, Jetpack (Compose is a plus), Coroutines and/or RxJava, and dependency injection with Dagger or Hilt.
- Experience building Android applications with offline/online support, background tasks, or multi-process architectures.
- Good English level to read technical documentation, research solutions and communicate in writing.
- Ability to work autonomously and manage your own workload.
- Strong communication skills and experience collaborating in multidisciplinary teams.

It would be a plus if you...
- Experience working on global-scale products (multiple time zones, currencies and languages).
- Experience working with CI/CD pipelines.
- Experience working with NFC/RFID on Android (reading and writing).
- Experience integrating mobile payment gateways.
- Experience using local databases and implementing data synchronization with backend services.
Benefits & Perks
- Real Flexibility
- An environment where tech reigns supreme, not spreadsheets
- Direct impact on products used by millions
- Growth, ownership, and zero unnecessary bureaucracy
- In-house events and festivals
- Great atmosphere, serious challenges, healthy team
- Diverse and inclusive culture
- Lunch Buddies: once a week, lunch is on us
- TaxDown tax filing
- Payflow for payroll advances
- Paid absences for your birthday, prenatal checkups and childbirth preparation classes for the pregnant woman´s partner, and in case of hospitalization or death of your pet
- Idsports Challenge: we support participation in sports challenges
- English activities to improve your fluency
About the process

Fever aims to provide the best-fastest possible experience to our candidates. This is how it would look like:
- Talent Interview - 1h: An intro to Fever, our culture and a conversation about your background and experience.
- Technical Assignment: Your opportunity to demonstrate all you know! We would like to receive it back within 3 days.
- Team Interview - 1.5h: A discussion about your proposed solution to the technical challenge and your chance to make sure you know everything you need about Fever.
- Engineering Manager Interview - 1h: A deep dive into your technical expertise and your opportunity to ask anything you need to know about your day to day at Fever.

Thank you for considering joining Fever. We cannot wait to learn more about you!

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada15 ene.

React Kotlin Android iOS Swift UX/UI Flutter React Native Sketch

We are looking for a talented UI/UX Designer to design intuitive, engaging, and visually appealing mobile app experiences. The ideal candidate will combine user-centered design principles with strong visual design skills to create seamless interactions across iOS and Android platforms.


Key Responsibilities:

● Design end-to-end user experiences for mobile applications (iOS & Android)
● Create user flows, wireframes, prototypes, and high-fidelity UI designs
● Conduct user research, usability testing, and translate insights into design solutions
● Collaborate with product managers, developers, and stakeholders to define requirements
● Develop and maintain design systems, style guides, and UI components
● Ensure designs meet accessibility, usability, and platform guidelines
● Iterate designs based on feedback, analytics, and user testing results
● Stay up to date with mobile UX trends, tools, and best practices

Required Skills & Qualifications:

Proven experience as a UI/UX Designer for mobile applications
● Strong portfolio demonstrating mobile-first design and problem-solving
● Proficiency in design tools such as Figma, Sketch, Adobe XD, or similar
● Solid understanding of iOS Human Interface Guidelines and Material Design
● Experience with prototyping and usability testing tools
● Knowledge of responsive and adaptive design principles
● Strong communication and collaboration skills

Preferred Qualifications:

● Experience working in Agile/Scrum environments
● Basic understanding of front-end development (Swift, Kotlin, React Native, or Flutter concepts)
● Experience designing for multiple devices and screen sizes
● Familiarity with accessibility standards (WCAG)

• Nivel de experiencia---
• Tipo de contratoA tiempo completo
• Publicada4 ene.

. React C# PHP MySQL Python TSQL Kotlin Android REST TypeScript iOS Swift DevOps Redis Excel Symfony LESS Office

Join Proton and build a better internet where privacy is the default

At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online.

Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations.

Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online.

Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity to work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions.

We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our open-source projects here!

Purpose of the role: 

Proton continues to grow rapidly as increasing numbers of people across the globe seek greater privacy controls of their information online. To accelerate our growth, we are seeking a senior leader to drive engineering for one of our many existing or upcoming Products.

We are seeking a Director of Engineering to one of our existing or upcoming Products. This role involves setting and executing technical strategy, team management, and working closely with your senior product managers counterparts, to ensure high-velocity delivery of new products.

As a key member of the engineering leadership team, you will shape the company’s technical strategy and contribute to Proton’s mission of creating a privacy-centric internet. Each product will have its unique challenges and areas of focus, nevertheless we require all Engineering Directors for our Products to have a demonstrated track record of building and scaling customer facing applications, in either a B2C or B2B context, for millions of users, across multiple platforms (mobile, desktop, backend systems and platforms).

In addition to technical expertise, Engineering Directors as senior leaders within Proton, have excellent communication skills, a business mindset, and a strong sense of empathy for the end customers.

What you will do:

• Setting technical direction and vision for one of our Products
• Lead technical design and platform discussions
• Drive continuous improvement in our DevSecOps practices, and improve lead times and time to market while maintaining exceptional standards of product quality
• Hold yourself and team accountable for timely delivery of scalable, quality-focus user experiences and features
• Develop efficient processes, and motivate your team to operate with high velocity, ownership, and accountability
• Lead through others, and develop the next generation of engineering leaders at Proton
• Inspire, coach, and develop your teams
• Optimize your organizational structure, and continuously raise the bar on hiring
• Build strong relationships with senior leaders, and advance your long-term platform and engineering vision
• Contribute to Proton's technology and open source communities
• Foster an inclusive and diverse environment for your team to show up and give their best each day
  
  
  

Our Tech stack:

• Applied cryptography (PGP, TLS, etc.)
• REST APIs
• Event architectures
• HTTP networking
• SQL, Redis
• PHP (Symfony), Rust, Python
• iOS, macOS (Swift)
• Android (Kotlin, Jetpack)
• Web (Typescript, React)
• Desktop (C#, Swift)
• Infrastructure: MySQL / Ceph
  
  
  

We need you to have:

• Experience in software engineering in progressively complex roles
• Experience directly leading and managing engineers
• Demonstrable experience as a manager of managers
• A history of collaboration with senior leaders in engineering, product on developing technical and product strategy
• Great empathy and collaboration skills, and even greater resilience
• A curious, passionate, and growth-oriented mindset
• Deep experience as a hands-on software engineer creating well-crafted, maintainable systems
• Mobile-first background (ideally former mobile developer)
• Practical experience leading DevOps and SRE initiatives and driving best practices
• Experience with cryptography preferred
• Bonus points for each of the following:

• Experience with performance tuning and scaling across client, backend, infrastructure
• Working closely with C-level executives to align on direction, vision and execution
• Having both, the experience of operating at global scale with millions of customers but also thriving in the chaotic growth phase of scaling up to reach it.
  
  
  

What We Offer

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
• Flexible Working: You can define your own working hours as long as it works with team meetings.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.
  
  
  

Our Commitment to Diversity and Inclusion

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.

Candidate Privacy Notice

When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.

If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at [email protected].

Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.

To learn more about our privacy policy, please visit our privacy policy page.