Senior Software Engineer - Mobile/Android (m/f/d)

FlixMobility GmbH is looking for a Senior Software Engineer - Mobile/Android (m/f/d) to join the Berlin office. This position centers on building and enhancing mobile apps that serve millions of travelers around the globe. Team and Collaboration The role is part of the Android Team within the Customer Experience Stream's Demand Division. The group includes a product owner, UX specialist, Agile tester, and several engineers. Together, they focus on the travel onboarding journey and post-booking features to make the Flix app a reliable companion for passengers. Close collaboration with iOS colleagues and other feature teams ensures a unified mobile experience. Delivering well-integrated, thoroughly tested features is a key part of the work. What You Will Do Develop and maintain scalable Android applications with a strong focus on user experience Refine onboarding and post-booking flows to improve the passenger journey Work alongside cross-functional teams to deliver cohesive mobile features Maintain code quality and reliability through comprehensive testing Tech Stack Languages & Architecture: Kotlin, Jetpack Compose, MVVM, Clean Architecture Networking & Data: GraphQL, Firebase Remote Config, Crashlytics Dependency Injection: Dagger/Hilt Testing: Espresso, Robolectric, JUnit CI/CD & Automation: GitLab CI/CD, Fastlane, Docker Collaboration Tools: Figma, Microsoft Teams, Atlassian Jira, Confluence, Atlas Benefits Competitive salaries Growth and development opportunities Collaborative culture with personal ownership Work on products used by millions of travelers

Join Our TeamBecome an integral member of SumUp's Mobile Platform Squad as a Senior Android Engineer and play a pivotal role in our growing Android ecosystem. With substantial investments directed towards flagship products, we empower our feature teams to create world-class user experiences. Your contributions will be key in establishing a solid foundation that enables over 40 Android engineers to work at peak productivity and efficiency, directly influencing the future of mobile payments for millions of merchants.Our engineering culture emphasizes autonomy, collaboration, and innovative thinking. Your initiatives will resonate throughout the organization, connecting you with mobile engineers across various teams. This role is vital for:Removing Bottlenecks: Proactively identifying and resolving critical bottlenecks in CI/CD pipelines and app infrastructure that could hinder the rollout of new features and enhancements.Enhancing Developer Experience: Designing and implementing state-of-the-art tools and infrastructure that significantly improve developer experience, decrease build times, and streamline workflows for our extensive Android engineering team.Modernizing a Mature Codebase: Leading the evolution and refinement of our Android codebase, with an emphasis on code simplicity, maintainability, and overall health across all SumUp Android products.Ensuring Product Stability & Scalability: Providing essential support and guidance across our diverse Android product suite, assuring consistency, reliability, and seamless functionality for the Register, Android Terminal, SumUp Go, and Merchant app.Your Responsibilities:Strategic Impact: Spearhead the development of core experiences for both merchants and our internal Android developers, directly contributing to SumUp's ambitious Android product roadmap.Technical Leadership: Architect, develop, and maintain essential tools, frameworks, and infrastructure that significantly enhance the consistency, scalability, and reliability of our mobile applications, ensuring no adverse effects across our varied Android products.Performance & Efficiency: Drive initiatives in CI/CD systems, advanced developer tooling, and performance enhancements to dramatically optimize mobile development processes and reduce build times for our expanding team.Codebase Evolution: Actively manage technical debt, enhance code health, and introduce best practices to a complex, mature codebase, ensuring its longevity and adaptability.

Join Avaloq, a leading provider of banking software solutions, as a Software Engineer specializing in Android Mobile Banking. You will be at the forefront of developing innovative mobile banking applications that enhance user experiences across the European market. Collaborate with a dynamic team of professionals to deliver high-quality software solutions that meet the evolving needs of our clients.

Join our dedicated team at europeanhomecaregmbh as a Psychologist (m/f/d) in Berlin. We are seeking an empathetic and skilled professional to provide mental health support and counseling services to our diverse clientele.

Why choose voize? We are more than just an employer!At voize, we prioritize giving frontline workers the invaluable gift of time—time to care, connect, and truly be present. Unfortunately, much of that time is consumed by administrative tasks that detract from what truly matters: the people.We are revolutionizing this by developing an AI companion that liberates nurses from administrative burdens, allowing them to reclaim up to 30% of their time. Our mission is not to replace human effort but to enhance it, amplifying their impact in the care sector. Currently, over 1,100 care facilities trust voize, and more than 75,000 nurses depend on our AI companion to streamline their daily responsibilities.Supported by a robust $50M Series A funding round led by Balderton Capital, with contributions from HV Capital, Y Combinator, and other prominent VCs, our mission is grounded in technological innovation with a profound social impact. Join us in this transformative journey!

About Our Team At SumUp, we provide a cutting-edge Point-of-Sale (POS) solution that empowers businesses such as cafes, shops, bars, and hair salons to operate seamlessly and grow. Our platform boasts a vast array of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools. Our POS solution integrates flawlessly into the SumUp SuperApp, which is compatible with our proprietary register hardware as well as mobile devices like tablets and smartphones. As a Senior Android Developer, you will work alongside an innovative, cross-functional team consisting of Product Managers, Product Designers, Engineering Managers, and fellow developers. About the Role We are transitioning towards a Kotlin Multiplatform (KMP) strategy, facilitating shared development between Android and iOS. In this role, you will gain experience with this technology, helping to shape the future of our mobile applications. If you are a developer who prioritizes user-centric design, precision, and effective collaboration, you will thrive here. You bring structure to communication and flourish within a cross-functional environment. This position is based in Berlin, where face-to-face interactions fuel innovation and teamwork. Your Responsibilities Develop new features for the item catalog within the SumUp SuperApp Improve application architecture and actively contribute to our Kotlin Multiplatform strategy Enhance and maintain our unified Android app, utilized in over 60 countries, ensuring high-quality and scalable solutions Drive product evolution by identifying improvement opportunities and participating in daily decision-making Create comprehensive documentation and implement thorough testing for features prior to release Work closely with Designers, Product Managers, and Android engineers to ensure a cohesive UX experience across platforms Mentor and coach junior engineers You Will Excel in This Role If: You possess 8+ years of experience in mobile engineering, particularly with Android and Kotlin. You have 2+ years of experience with Jetpack Compose. You have a strong grasp of software design patterns (e.g., MVVM, MVI) and expertise in creating modular, scalable app architectures. You are knowledgeable about reactive programming (Flow, Coroutines, and Concurrency).

Superhuman offers a full-time dynamic hybrid working model for this role. This flexible framework allows team members to enjoy both focused work time and in-person collaboration, fostering trust, innovation, and a robust team culture.About SuperhumanSuperhuman, now a part of Grammarly, is revolutionizing productivity through AI, dedicated to unlocking the superhuman potential within everyone. Our suite of applications seamlessly integrates with over 1 million platforms and websites, providing tools such as Grammarly's writing assistance and Go, our proactive AI assistant. Founded in 2009, we empower over 40 million users and thousands of organizations and educational institutions globally to eliminate busywork and prioritize what truly matters. Discover more at superhuman.com and explore our core values here.The OpportunityTo reach our ambitious targets, we are seeking a talented Android Engineer to join our Mobile Team. This role presents a unique opportunity to develop new features and capabilities that will enhance the Superhuman Android experience to world-class standards.Our engineers and researchers enjoy the freedom to innovate and drive breakthroughs that directly influence our product roadmap. As we scale our interfaces, algorithms, and infrastructure, the complexity of our technical challenges is rapidly increasing. For insights from our team, check out our technical blog.Writing effectively on mobile devices poses significant challenges, particularly in professional environments. Our Superhuman AI Writing Assistant, launched in 2023, aims to make effective and error-free writing easily accessible on mobile. Since its introduction, it has gained substantial traction, with users engaging with it over seventy times daily.Creating a seamless writing assistant experience brings unique challenges, as there is no tolerance for delays or glitches in a product that users rely on for immediate responses. As an Android Engineer, you will:Work closely with the Product, Design, and Machine Learning teams to translate new ideas from concept to production.Contribute to the ongoing architecture of our mobile products, ensuring outstanding responsiveness and performance, even in resource-constrained environments.

scalablegmbh is seeking a Senior Android Engineer to join the team in Berlin. This position centers on designing and building Android applications that improve user experience and offer advanced functionality. What you will do Design and develop Android applications with a focus on usability and performance Work closely with colleagues from different disciplines to deliver cohesive mobile solutions Contribute to architectural choices and help shape the direction of mobile development Support the creation of scalable products that can grow with user needs Who we are looking for Experience building Android apps and a strong interest in mobile technology Comfort working on complex technical challenges Enjoys collaborating in a team setting and sharing ideas Motivated to have a meaningful impact on product quality and user satisfaction This role is based in Berlin and offers the chance to help shape the future of mobile solutions at scalablegmbh.

About the RoleJoin SumUp as a Senior Embedded Engineer within our Hardware Tribe, where you will collaborate with a talented cross-functional team of Hardware Engineers, Product Managers, QA Engineers, and more. Your expertise will be pivotal in developing our innovative Android-based payment devices, guiding the process from bootloader and kernel development to framework integration and validation.This is an exciting opportunity as we transition to using the Android platform for our proprietary hardware solutions. Our payment devices are uniquely designed with a focus on security and customization, necessitating a profound understanding of both embedded hardware and software.This position requires on-site presence in our Berlin office, as we value the organic interactions that emerge from working closely together.About the TeamYou may have already encountered our card readers while enjoying a cappuccino or settling a bill at your favorite salon. Our Hardware team is dedicated to crafting elegantly designed card payment devices and accessories that empower our merchants to launch, manage, and expand their businesses. We tackle a variety of engineering challenges spanning industrial and electronic design, embedded systems, mobile applications, and backend services.We foster an environment of open communication and continuous learning rather than strict regulations. If you are eager to innovate and support millions of independent merchants in achieving success, we encourage you to apply!Your ResponsibilitiesLead the system bring-up for the Android Embedded platform, focusing on bootloader, kernel, and driver integration.Create and integrate custom modules for SumUp, including kernel drivers, power management, and connectivity components.Enhance the build system to ensure stability and scalability across the platform.Debug hardware and software issues at the protocol level (I2C, SPI, UART, SDIO, etc.).Conduct testing and validation to ensure timely delivery of high-quality releases.Work closely with Hardware Engineers, QA, Product Managers, and Manufacturing/Supply Chain teams.Deliver Android OS features independently and contribute to a culture of engineering excellence within the Hardware Tribe.

scalablegmbh is looking for an Android Engineer to help build and improve mobile applications in Berlin. This position centers on developing software that aims to deliver a strong user experience. Role overview As an Android Engineer, the focus will be on designing and implementing features for mobile products. Collaboration with a skilled team is part of the day-to-day work, with a shared goal of producing reliable and effective applications. What you will do Develop and maintain Android applications Work closely with other engineers and professionals to deliver high-quality software Contribute to improving user experiences through thoughtful design and implementation Location This role is based in Berlin.

Lead the complete development lifecycle of high-performance Android applications utilizing Kotlin, Coroutines/Flow, Jetpack Compose, Dagger/Hilt, Retrofit, and Espresso, along with other cutting-edge technologies.Design and enhance a modular architecture that ensures long-term maintainability and reliable performance even under peak traffic conditions.Drive automation initiatives by establishing robust build, test, release, and deployment pipelines as integral aspects of the product (CI/CD).Function as a technical multiplier by elevating quality standards through code reviews, mentoring colleagues, and disseminating knowledge across Android teams.Collaborate with product, design, and editorial teams to shape features from concept to launch, ensuring optimal user value, reliability, and speed.Investigate and implement AI-driven development tools to enhance developer productivity and software quality, grounded in sound engineering principles.

We are seeking an experienced Senior Backend Engineer to join our dynamic team at redcare-pharmacy. In this role, you will be responsible for designing and implementing robust backend systems for our mobile applications. The ideal candidate will have a strong background in backend development and a passion for creating efficient, scalable solutions.

At GALVANY, we are committed to making climate-neutral living achievable for everyone. Our focus is on delivering innovative and practical solutions, including accessible heat pumps, battery storage, and smart metering, all designed to be reliable and affordable. GALVANY-Tech is leading the charge in the energy transition through advanced software solutions. We are developing an AI-driven Operating System that facilitates the sales, planning, installation, and operation of heat pumps and integrated energy systems, catering to everything from single-family homes to multi-unit buildings and our Energy Community as a Virtual Power Plant.As a profitable green-tech startup, we are firm believers that sustainable impact and long-term growth must be rooted in a sound business model. Our values revolve around customer satisfaction, transparency, and accountability, enabling us to provide high-quality heating solutions within an empowering environment.The RoleAs a Senior Mobile App Engineer at GALVANY, you will play a pivotal role in building and maintaining mobile applications that deliver our AI-based Operating System directly to users. You will design and implement seamless and high-performance experiences for installers on-site and for homeowners managing their energy systems, with a strong focus on design excellence and practical usability.Responsibilities:Develop cross-platform mobile applications utilizing Flutter, prioritizing performance and user experience.Work collaboratively with the design team to convert Figma specifications into refined, native-like applications.Integrate with backend APIs, ensuring reliable data synchronization, including offline capabilities.Optimize mobile apps for various constraints: battery usage, network availability, permissions, and adherence to app store guidelines.Utilize AI tools to enhance development workflows with rapid prototyping and to explore innovative mobile applications.Take ownership of features throughout the entire process from implementation to deployment and ongoing iteration.Tech Stack: Mobile development with Flutter; Backend technologies include GoLang and Laravel; Frontend frameworks such as React, Tailwind, and Shadcn; Utilizing tools like Azure, GitHub, Linear, and Notion.RequirementsExperience. A minimum of 4 years in high-performance environments (e.g., top-tier consulting firms, rapidly growing startups, or similar settings).Proven Track Record. Demonstrated end-to-end responsibility in previous roles, showcasing your ability to manage mobile app projects effectively.

Become a part of Voyfai, an innovative Series A startup revolutionizing logistics and technology throughout Europe.Based in the vibrant city of Berlin, we are at the forefront of a network of companies operating across various European markets.This is an exceptional chance to take the reins from the very beginning, make a significant impact, and thrive in a fast-paced, dynamic setting. Whether you're refining processes, crafting strategies, or spearheading initiatives, your efforts will directly affect the success of Voyfai and the enterprises we assist. If you have a passion for building innovative solutions from the ground up and want to be part of a rapidly growing company, we are eager to hear from you.Your RoleWe are on the lookout for a talented Senior Software Engineer (m/f/d) to join us in constructing the essential infrastructure of our logistics platform. In this pivotal role, you will collaborate closely with AI engineers and product stakeholders to define system architecture, integrate with transport management systems, and develop customer-facing features that utilize large language models. Your contributions will play a vital role in shaping our engineering practices and establishing a scalable foundation for future product development over the next year.Key Responsibilities:Design and implement scalable software solutions with a focus on robust system architecture and clean coding practices.Create and enhance integrations with transport management systems and third-party logistics platforms.Partner with AI engineers to deliver customer-centric features powered by advanced language models.Enhance system reliability, maintainability, and scalability by managing technical debt and evolving the technology stack.Utilize PostgreSQL to ensure data consistency, integrity, and performance.Employ cloud platforms such as AWS or GCP to facilitate infrastructure and deployment.Contribute to DevOps and CI/CD practices to enhance release speed and operational stability.Occasionally engage with customers to translate their requirements into product and engineering solutions.What You Bring:A minimum of 5 years of professional software engineering experience, demonstrating strong backend architecture skills and proficiency across the full stack.Proficient in JavaScript or TypeScript in both backend and frontend contexts.Experience with SQL databases, particularly PostgreSQL.Familiarity with cloud platforms such as AWS or GCP.Strong understanding of DevOps and CI/CD methodologies.Excellent problem-solving skills and a proactive approach to challenges.

Why Join Scout24?Scout24 is the proud home of ImmoScout24, Germany's leading real estate platform. For over 25 years, we have been transforming the real estate landscape in Germany and Austria. Our mission is to create a digital ecosystem that connects homeowners, seekers, and real estate agents, making the process of finding the perfect home seamless and efficient. Your career is as significant as finding the right property! At #WorkingatScout24, you will join a vibrant, inclusive team of around 1,100 colleagues from 58 different nationalities. We celebrate diversity and individuality, fostering a culture of openness and authenticity that promotes personal growth. We view mistakes as opportunities for innovation and improvement, and together we strive for success while treating one another with respect as #oneteam.If this resonates with you, we would be thrilled to welcome you aboard! Even if you believe you don't meet all the job requirements, we are eager to learn how you can contribute to our team. Join us in our journey of growth! Welcome home!In addition to our exceptional team and culture, we offer fantastic benefits that make Scout24 an outstanding workplace!

Join Our Innovative TeamAt SumUp, we provide powerful Point-of-Sale (POS) solutions that empower diverse businesses such as cafes, shops, bars, and salons to thrive. Our platform features robust tools for product management, inventory oversight, business analytics, regulatory compliance, and customer loyalty programs.Our advanced POS solution is seamlessly integrated into the SumUp SuperApp, supporting both our proprietary hardware and a variety of mobile devices.As an Android Developer, you will work alongside a talented, cross-functional team comprising Product Managers, Designers, Engineering Managers, and fellow developers.Your RoleWe are transitioning to a Kotlin Multiplatform (KMP) strategy to facilitate shared development for both Android and iOS applications. In this dynamic role, you will gain expertise, refine your skills, and contribute to the evolution of our mobile applications.You are a developer who prioritizes user-centric design, values clear communication, and excels in collaborative environments.On-site Collaboration in BerlinWe believe that in-person interactions drive innovation and teamwork, making this role exclusively on-site in Berlin.Your ResponsibilitiesDevelop and enhance features for the item catalog within the SumUp SuperApp.Contribute to the architectural improvement of the application while supporting our Kotlin Multiplatform initiative.Maintain and enhance our unified Android application, serving over 60 countries and ensuring high-quality, scalable solutions.Identify areas for enhancement, influencing product evolution and participating in daily decision-making.Create comprehensive documentation and execute thorough testing for new features prior to deployment.Work closely with Designers, Product Managers, and Android engineers to provide a cohesive user experience across platforms.Mentor and coach junior engineers.Who You AreYou possess 3+ years of experience in mobile engineering, specifically with Android and Kotlin.You have 2+ years of experience utilizing Jetpack Compose.You have a strong understanding of software design patterns (e.g., MVVM, MVI) and are skilled in creating modular, scalable app architectures.You are passionate about user-centric design and thrive in a collaborative environment.

**Design and Develop**: Craft and maintain robust, high-performance, and secure web applications using leading technologies such as Vue.js, Node.js, TypeScript, Nuxt, and Next.js. Your contributions will directly impact customer interactions, encompassing everything from secure authentication processes to dynamic gamification features.**Lead Feature Implementation**: Take full ownership of significant feature developments, overseeing the entire lifecycle from technical design to implementation and production monitoring. You will engage in complex challenges such as creating fraud-resistant systems, enhancing user onboarding, and implementing self-service profile management.**Promote Web Experimentation**: Position our web platform as a swift avenue for transforming ideas into validated insights. You will prioritize A/B testing and rapid iteration, empowering the business to experiment and validate concepts swiftly.**Advocate for Frontend Quality**: Champion best practices in testing, code quality, and frontend architecture within your team. You will conduct code reviews, mentor fellow engineers, and elevate standards of excellence.**Enhance Observability**: Ensure that the features you create are observable and dependable. Implement monitoring, error tracking, and performance metrics to instill confidence in production and support data-driven enhancements.**Collaborative Approach**: Work closely with Product Managers, Backend Engineers, Designers, and Marketing teams to develop solutions that meet customer requirements while adhering to technical and business constraints.**Contribute to Broader Initiatives**: Engage in frontend architecture discussions and contribute to shared tools and patterns that benefit multiple teams in the Consumer sector, extending your influence beyond immediate responsibilities.**Prioritize Security**: In a role focused on authentication and fraud prevention, maintaining security is paramount. You will adhere to security best practices, identify potential vulnerabilities, and help safeguard customer data and accounts.

Greetings!At Yazio, we are on a mission to empower individuals to live healthier lives through innovative technology. We are seeking a talented and product-focused Senior Mobile Engineer to join our dynamic core squad and contribute to features that inspire millions to embark on their wellness journey.As an essential member of our cross-functional team, you will collaborate closely with the Product Manager, Engineering Manager, and Designer. Your insights will shape our product, utilizing our Kotlin Multiplatform (KMP) stack to create elegant and impactful solutions for users on both iOS and Android platforms.This position offers the flexibility of being 100% remote, welcoming candidates from Germany, Spain, Portugal, or the U.K.YOUR MISSIONYour role is to transform user needs and product vision into robust, high-quality code that delivers a world-class user experience. You will oversee the technical execution within the squad, embodying best practices and supporting the entire team.Take Ownership of Features. You will convert concepts from technical design into polished, deployed features. Your responsibilities include writing clean, maintainable code, ensuring comprehensive test coverage, and monitoring the impact of your contributions in a live environment.Collaborate with Product and Design. You will be an integral part of the discussion, providing technical insights, evaluating trade-offs, and helping to shape a roadmap that balances ambition with feasibility.Promote Technical Excellence. As a steward of our codebase, you will help manage technical debt, enhance performance, and advocate for the adoption of modern practices within our Kotlin Multiplatform framework.Empower Your Team. You will act as a mentor to fellow engineers, leading by example through thoughtful code reviews, refining team processes, and sharing your expertise to foster collective growth.YOUR PROFILEWe are looking for a seasoned engineer who is not only passionate about their craft but also deeply committed to the positive impact their code has on users.Extensive Experience in Modern Mobile Development. You have a strong background in building native mobile applications on Android (Kotlin, Jetpack Compose). Familiarity with iOS development (Swift, SwiftUI) is an advantage, along with a readiness to broaden your expertise across both ecosystems. Experience with KMP is highly desirable.Proven Track Record. You possess a solid history of delivering high-quality software and have experience working in agile environments.Team Player. You thrive in collaborative settings and enjoy sharing knowledge while learning from others.Attention to Detail. You have a keen eye for detail and a commitment to maintaining high standards in your work.

Join Tonsser, a company dedicated to empowering young football players for over a decade, as we embark on an exciting phase of growth. We are currently seeking a skilled Senior Android Developer to play a pivotal role in shaping our future innovations. If you have a passion for your craft, thrive in a fast-paced environment, and desire to make a significant impact on the lives of millions of athletes, we encourage you to apply.

Join praxipal, where we're revolutionizing healthcare administration with our AI-powered workforce, tackling the global shortage of medical staff.We believe that medical assistants should focus on patient care rather than mundane tasks like scheduling, messaging, or invoicing. Enter Luna, our AI receptionist, who automates communication and is already embraced by over 100 medical practices.As we expand Luna's capabilities to manage all aspects of patient communication, we're on a mission to streamline administrative processes directly within existing practice systems.Backed by one of Europe’s leading investors and recognized as one of Germany's fastest-growing healthtech startups, our team comprises talents from renowned organizations such as Palantir, Amazon, and SAP.We are currently seeking a Senior Software Engineer (Infra & Platform) to construct the reliable, secure, and scalable infrastructure that powers Luna.The RoleLuna operates in real-time, automating critical workflows involving sensitive patient data. Therefore, reliability, latency, and security are not just goals; they are essential features of our product.In this hands-on, technical role, you will establish and maintain the platform that ensures Luna's reliability in daily practice operations. This includes managing cloud infrastructure, CI/CD processes, identity and access management, observability, and Luna’s real-time voice stack. Your work will help minimize risks, streamline deployments, facilitate quick failure diagnostics, and embed security as a core principle.This position is on-site in Berlin and requires fluency in German.