Senior Backend Engineer for Mobile Applications (m/f/d)

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.

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 innovative team at redcare-pharmacy as a Senior Backend Engineer and play a pivotal role in developing cutting-edge backend solutions. You will work closely with cross-functional teams to design, implement, and maintain robust systems that enhance our pharmacy services.

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.

Join scalablegmbh as a (Senior) Product Manager specializing in Mobile Applications. In this pivotal role, you will lead the charge in creating innovative mobile solutions that enhance user experiences and drive business growth. Collaborate with cross-functional teams, including design, engineering, and marketing, to define product vision and strategy. Your expertise will guide the product development lifecycle from ideation to launch, ensuring that we meet both user needs and company objectives.

Veeva Systems is a pioneering organization dedicated to transforming the life sciences sector by providing cutting-edge industry cloud solutions that accelerate the delivery of therapies to patients. As one of the fastest-growing SaaS companies in history, we achieved over $2 billion in revenue last year, with exciting growth opportunities ahead.Our core values—Do the Right Thing, Customer Success, Employee Success, and Speed—drive us in every endeavor. In 2021, we made history by becoming a public benefit corporation (PBC), committed to balancing the interests of our customers, employees, society, and investors.As a Work Anywhere company, we prioritize your flexibility to work from home or the office, enabling you to thrive in your preferred environment.Join us in transforming the life sciences industry, with a commitment to positively impacting our customers, employees, and communities.

Your Role We are seeking a skilled Backend Engineer with a strong interest in telecommunications and a deep passion for software development, particularly in big data technologies. In this role, you will be pivotal in the real-time processing of our data, driving microservices and fostering a fully data-driven environment within the company. This position can be based in our emnify offices located in Berlin or Würzburg, or remotely from Germany or Poland. Your Impact Collaborate within one of our service squads, taking charge of designing, building, testing, and managing components or projects that influence the pricing and charging mechanisms at emnify. Develop APIs and real-time data processing applications utilizing streaming technologies within the Apache Kafka ecosystem, prioritizing scalability and reliability. Engage with a team on core telecommunication functions such as automated product lifecycle management in a modern cloud-based setting. Architect and design aforementioned components to operate on AWS in a scalable manner. As part of a collaborative team, you will be responsible for deploying and managing these applications using CI/CD tools such as Jenkins and Terraform, along with monitoring solutions like Grafana and Prometheus. Your Skills Proven experience in full-cycle engineering from Proof of Concept (POC) to production with JVM-based languages, preferably Scala, as a significant portion of our codebase is in Scala. Demonstrated experience in stream/data processing, cloud computing, and API development. Strong understanding of microservices architecture and design principles. Excellent problem-solving abilities and a proactive approach to challenges. Ability to work effectively within a diverse team.

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.

Join our dynamic team at idealo as a Senior Software Engineer for our mobile app backend and play a pivotal role in enhancing our award-winning e-commerce applications. Our platform empowers millions of users to compare prices seamlessly and make informed purchasing decisions directly from their mobile devices. As part of a fully autonomous team dedicated to mobile app development, you'll balance the use of established technologies with innovative experiments, ensuring we continually deliver exceptional user experiences and further idealo's mission. We take full ownership of the operation, technical implementation, and strategic direction of our services, and we're seeking talented individuals to support our growth.About Your RoleEnd-to-End OwnershipDevelop and operate business and web services in the AWS Cloud.Oversee the entire lifecycle of your services (YBYO): architecture, infrastructure, development, testing, security, deployment, monitoring, on-call, and maintenance.Design and develop APIs (REST/GraphQL) for our mobile applications (Android & iOS).Ensure that our services are scalable, stable, and high-performing, even during peak loads.Technical ExcellenceMake architectural decisions for modern backend systems (e.g., microservices).Enhance our cloud infrastructure using tools like Terraform and Kubernetes.Maintain high software quality through rigorous testing, code reviews, and monitoring.Identify and address technical debt effectively.Introduce new technologies and continuously refine our development processes (e.g., CI/CD, automation, AI tools).Collaboration & ImpactWork collaboratively with mobile engineers (iOS & Android) and backend colleagues.Contribute actively to technical discussions and challenge existing solutions.Share your expertise within the team through pair programming, code reviews, or tech talks.Communicate complex technical topics clearly to non-technical stakeholders.Assume responsibility within the team, including participation in on-call rotations during critical situations.

Join our innovative team at bunch as a Senior Backend Engineer where you will play a pivotal role in shaping the future of our backend systems. You will collaborate with cross-functional teams to design, develop, and maintain robust, scalable backend solutions. Your expertise will be essential in ensuring the performance, quality, and responsiveness of our applications.

Join our dynamic team as a Senior Backend Engineer and play a pivotal role in developing cutting-edge applications that leverage Kotlin, Spring Boot, and AWS. You will work closely with cross-functional teams to architect and optimize backend systems that meet the demands of our growing user base.

Have you ever dreamed of being part of a revolutionary change in urban mobility? At Vay, we are redefining transportation by offering a unique service where customers can summon a car at the touch of a button—without a driver inside—thanks to our pioneering Remote Driving technology operating on real public roads.Already operational in Las Vegas, we are rapidly expanding, fueled by a strategic investment of up to $410 million from Grab. Our mission is straightforward: to transform private car ownership into a faster, cleaner, and more convenient door-to-door mobility solution. If you aspire to create something tangible and transformative, you will find a welcoming home here.Want to experience Vay firsthand? Use the code VAYCANDIDATE for $10 off your first trip in Las Vegas! Download the "Vay" app from the Apple or Google Play store and get started!What’s happening at VayWe are the first company to deploy vehicles on public roads in both Europe and the USA without a human driver and currently have the second-largest commercial driverless car fleet in the Western World.We have partnered with Kodiak to integrate our remote-driving technology into autonomous trucks in the US, demonstrating our capacity to adapt our technology for heavy-duty commercial vehicles and broaden its applications across the US.Having completed tens of thousands of trips, we are scaling our Las Vegas fleet to meet growing demand!...And soon, we will be expanding across the US and Europe

About Langfuse Langfuse builds an open-source engineering platform for large language model (LLM) applications. Teams use Langfuse for advanced tracing, evaluation, and prompt management to create reliable AI products. As part of the ClickHouse family, Langfuse supports over 2,000 customers, including 19 of the Fortune 50. Each month, the platform sees more than 26 million SDK downloads and over 6 million Docker pulls. Langfuse’s mission is to simplify the process of building useful applications, whether for startups or global enterprises. The company remains committed to open source and self-hosting, working closely with ClickHouse to accelerate product development and drive growth. The engineering team is based in Berlin and San Francisco, with current expansion focused on the EU timezone. Team members are expected to spend about one week per month in the Berlin office. Role Overview: Senior Backend Engineer (IAM and Billing) This position centers on two critical areas: identity and access management (IAM), and billing infrastructure. Work here directly supports both Langfuse Cloud and self-hosted deployments. What You Will Do Design and build the identity and access model that allows large organizations to manage many users, projects, and environments with precise permissions. Develop billing systems that translate billions of trace events into real-time usage metering and invoicing. Ensure authentication and billing remain reliable and secure, as errors in these areas could affect business operations. This work forms the backbone of Langfuse’s systems. The scope and impact are significant, offering a chance to make a real difference in how leading companies manage AI infrastructure. Location and Collaboration Role is open to candidates based in Europe (EU timezone). Expect to spend one week each month in the Berlin office for in-person collaboration.

About the CompanyAndercore is an innovative AI-powered trading platform revolutionizing the industrial supply chain for infrastructure, energy, and construction materials. We connect thoroughly vetted suppliers from Asia, Europe, and the GCC region with local demand through a seamless integrated platform.Our proprietary AI technology digitizes and automates the entire lifecycle of materials trade—covering procurement, pricing, inventory management, logistics, and embedded financing—thus transforming countless manual processes into real-time, orchestrated workflows.Buyers enjoy instant quotes, dependable availability, and predictable delivery via our unified operating system. Suppliers benefit from precise forecasting, effective demand management, and smooth integration into cross-border fulfillment networks. We collaborate with leading brands to execute both dropship and cross-dock fulfillment strategies for large-scale transactions, turning global supply chains into predictable, repeatable, software-driven workflows.Having achieved triple-digit million GMV and operating in six international markets, we are swiftly moving towards profitability. With a diverse team of over 80 members based in Berlin and Asia, we are on a mission to build the world’s first industrial-grade AI operating system for materials—redefining the dynamics of global trade in one of the most critical industries.Backed by top-tier investors and global banking partners, we recently secured a $40 million Series B funding round led by Atomico, Project A, and Invent Capital, supported by institutional backing from Commerzbank and KfW.About the RoleAs a Senior Backend Engineer, you will serve as a technical pillar within our team, expected to lead by example, influence architectural decisions, and elevate the quality of our deliverables. You will work autonomously while remaining deeply embedded in a collaborative engineering culture.Tech Stack: Java 21 (Spring Boot 3), Python, LangGraph, LLM APIs (OpenAI, Anthropic, Gemini), PostgreSQL, Kinesis, AWS, Terraform, GitHub Actions, Node.js, TypeScript, Next.js, React.

As an established IT service provider, we create modern, scalable software solutions for clients across various industries. We leverage the latest technologies, agile methodologies, and a passionate team dedicated to crafting digital products. We are looking to strengthen our team with experienced Senior Backend Developers / IT Consultants (m/f/d) who love technological diversity, enjoy holistic problem-solving, and provide competent consulting to our clients.You will develop end-to-end solutions that deliver real value to our clients while actively designing microservices and modern software architectures.You will build and operate high-performance backend services using Java or Kotlin, utilizing Spring Boot for complex software implementation, and reliably integrating databases and external interfaces.You are committed to high software quality, employing automated testing and clean code principles.You will confidently guide clients through architecture, technology, and implementation questions, translating technical concepts into understandable terms.You will collaborate closely with UX/UI designers, product owners, and developers from other disciplines, actively contributing to agile teams.You will conduct code reviews, provide constructive feedback, and ensure adherence to best practices, architectural guidelines, and high code quality within the team.

Atolls is the world’s largest community-driven shopping platform, active in over 20 markets.We empower millions to make informed spending choices across discovery, evaluation, and (re-)purchase by connecting individuals with the ideal brands and retailers.Our team of 1,000+ members across 10 countries develops products utilized daily on a global scale, providing you with genuine ownership and the chance to witness your impact. Are you ready to help shape the destinations people trust for confident shopping? We invite you to learn more.About This Role:We are on the lookout for a Senior Java Backend Engineer to become an integral part of our expanding engineering team in Berlin. In this pivotal role, you will be responsible for designing, developing, and scaling high-performance backend systems utilizing contemporary Java technologies and cloud-native architectures. This position is perfect for individuals who thrive on tackling complex systems, prioritize code quality, and possess a robust architectural mindset.Our Benefits:At Atolls, we are committed to fostering both your professional and personal development. Here’s what you can look forward to:A culture that champions personal and professional growth, alongside opportunities for internal mobility.A supportive and open-minded team that welcomes diverse perspectives and innovative concepts.32 days of paid vacation plus an additional day off for your birthday, ensuring you have ample time to recharge.A flexible hybrid working model to help you find the right balance between work and life.Access to a learning budget and internal training to enhance your skills in your role.Mental health coaching to promote your well-being.Regular global and local gatherings to celebrate achievements and strengthen connections.The chance to take a sabbatical after three years with the company.A cloud-based company setup, allowing flexibility and collaboration regardless of your location.*These are global benefits applicable to all employees, with additional local perks based on your location.Responsibilities:As a Senior Java Backend Engineer, you will...

Role Overview ABOUT YOU GmbH is hiring a Lead Principal Application Engineer for Mobile & Web Solutions. This senior role sits within the Product & Tech department and can be based in Hamburg or Berlin. The position focuses on leading the development of mobile and web applications, setting technical direction, and shaping digital experiences for millions of users. What You Will Do Lead the design and development of new mobile and web applications Drive technical excellence across projects and teams Enhance and evolve existing digital platforms Promote a collaborative engineering culture within the Product & Tech department Establish standards and best practices for future projects What We Look For Experience leading application development for both mobile and web platforms Strong technical background and a track record of delivering impactful digital products Ability to foster collaboration and mentor other engineers Comfort working in a changing, ambitious environment Commitment to building user-focused solutions Location This role is based in Hamburg or Berlin.

Lead and inspire a dynamic Mobile Native Engineering team, comprising talented iOS and Android engineers, to foster a self-organized, agile, and autonomous environment.Share your technical expertise and best practices to guide your team in their professional development.Collaborate with your team to establish and achieve clear OKRs.Organize and prioritize project goals alongside the Product team to align with business objectives.Participate in the recruitment process to attract and onboard top talent for your team.Facilitate technical discussions and decision-making processes to optimize our Android applications, focusing on performance, efficiency, and scalability.Drive the design and implementation of innovative features and solutions across our Mobile platforms, ensuring exceptional user experiences.Coordinate with stakeholders from various departments to successfully launch new features and support ongoing platform improvements.

Join redcare-pharmacy as a Backend Engineer (m/f/d) in Berlin and be part of a dynamic team dedicated to revolutionizing the pharmaceutical industry. In this role, you will develop robust backend systems that enhance our digital pharmacy platform.We are looking for an experienced engineer who is passionate about building scalable applications. You will collaborate with cross-functional teams to deliver high-quality solutions that meet the needs of our customers.

Role overview Taktile supports banks and fintech companies by automating key decisions such as credit checks and risk assessments. The Senior Backend Engineer on Team Decide focuses on building and improving the distributed execution engine that drives customer workflows. This engine forms the foundation of Taktile’s automated decision-making platform. What you will do Design and implement backend systems for distributed workflow execution Take ownership of critical systems throughout their lifecycle, from architecture to deployment Collaborate with a small, dedicated team where each engineer’s perspective directly influences the product Address complex backend problems specific to automated decision-making in financial technology Location This role is based in Taktile’s Berlin office.