Senior Backend Engineer (m/f/d) at emnify | Berlin, Germany

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 ca…

Join Aiven as a Backend Engineer specializing in ClickHouse. In this role, you will be part of a dynamic team focused on building scalable and efficient data solutions. You will leverage your expertise to optimize our backend architecture, ensuring reliability and performance.

Your ResponsibilitiesTake ownership of backend systems that facilitate thousands of hotel bookings daily.Design, develop, and maintain our core booking infrastructure, ensuring robust integrations with PMS platforms, channel managers, and payment processors.Define and support a resilient API layer that drives our React frontend applications.Enhance engineering standards by demonstrating exceptional system design, effective communication, and technical leadership.Collaborate closely with the founders to influence the long-term architecture and cultivate a strong engineering culture.

Atolls is the world’s largest community-driven shopping platform, active in over 20 markets.Our mission is to empower millions to make informed spending decisions by connecting them with the right brands and retailers.With a team of over 1,000 professionals across 10 countries, we deliver products that are used daily on a global scale, giving you the opportunity to truly own your role and witness your impact. If you want to influence the platforms that consumers trust for confident shopping, we want to hear from you.About This Role:We are on the lookout for a Senior Backend Engineer (TypeScript, NestJS/Node.js) to join our Fulfilment team, based in Berlin or available for remote work from Germany. In this pivotal role, you will enhance our cashback reward platforms to create outstanding user experiences that enable our customers to earn and redeem rewards while shopping. As a vital member of our team, you will play a key role in developing and improving the digital environments our users depend on during their shopping journeys.Your contributions will significantly impact how millions of consumers interact with our platforms, guiding them towards smarter, fairer, and more rewarding choices.Our Benefits:At Atolls, we prioritize both your professional and personal advancement. Here’s what you can expect: • A culture that promotes personal and professional growth, with opportunities for internal mobility. • A supportive and open-minded team that values diverse perspectives and innovative ideas. • 32 days of paid vacation plus your birthday off, allowing you to recharge. • A flexible hybrid working model to ensure a healthy work-life balance. • A dedicated learning budget and internal training programs to facilitate your growth. • Mental health coaching to support your overall well-being.

ABOUT YOU GmbH seeks a Senior Backend Engineer to advance its Business Intelligence Application. This role is open in either Hamburg or Berlin. Key responsibilities Build and maintain backend systems that enable data-driven decisions throughout the company. Collaborate with teams across the organization to enhance performance, scalability, and reliability of the application. Apply backend engineering expertise to influence the development of Business Intelligence tools. Location This position is available in Hamburg or Berlin.

Affinidi develops technology that helps individuals and organizations manage their data with greater control. The company specializes in privacy and security, delivering decentralized digital identity solutions. Its platform enables secure data exchange and digital credential management across various industries and international boundaries. Role overview The Senior Backend Engineer (Rust) will take part in designing and building backend systems that support Affinidi’s digital identity products. This position centers on applying strong Rust expertise to real-world engineering problems, always with a practical mindset. Requirements Extensive experience developing backend systems with Rust Ability to address engineering challenges with practical, effective solutions

Please note that this position is based in Berlin, Germany — relocation support is provided if required.THE BEST WORK OF YOUR CAREERTrade Republic is Europe’s leading savings platform, operating in 18 countries and trusted by over 10 million customers with more than €150 billion in assets. Our mission is to empower everyone to build wealth by providing easy, safe, and free access to financial systems.Join us and take your career to new heights while working alongside a team of exceptional talent and cutting-edge technology to create a positive impact for millions.WHAT YOU’LL BE DOINGDevelop and test services and products using advanced tools from the JVM ecosystem, including Kotlin, Spring, Vert.x, Hibernate, or jOOQ.Design cloud services with a focus on high availability, low latency, and scalability on AWS.Implement automated software delivery utilizing GitHub Actions, container-based CI/CD pipelines, and Kubernetes orchestration.WHAT WE'RE LOOKING FORA minimum of 5 years of experience in software engineering, particularly within the JVM ecosystem.Proven experience in developing and deploying scalable features in a service-oriented architecture.A strong commitment to delivering reliable, maintainable software through iterative development and continuous delivery.Experience building platform services that support product development (prior experience in platform-focused teams is an advantage).WHY YOU SHOULD APPLY NOWOur culture values ownership, excellence, and high energy. We are dedicated to closing the pension gap and democratizing wealth in Europe. If this resonates with you, we encourage you to apply!We believe that the diverse identities and backgrounds of our team make us more innovative and effective. We are committed to fostering an inclusive environment where everyone feels respected and has equal opportunities to thrive in their careers. For any inquiries about diversity and inclusion during the interview process, please contact your recruitment partner.

Join our dynamic team at ABOUT YOU as a Senior Backend Engineer specializing in search engine technologies. In this pivotal role, you will harness your expertise in backend development to enhance our search engine capabilities and ensure seamless user experiences. We are looking for innovative thinkers who thrive in a collaborative environment and are eager to tackle complex challenges.

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.

Join Our TeamAt SumUp, our Sales & Order team is pivotal in developing the core Sales API and Receipt engines that drive our ecosystem. From hardware like POS systems to our Solo Card Reader, and software solutions such as Online Store and Online Payments, our aim is to simplify complex transaction data into a unified 'Sales' language. We empower teams to build independent features, ensuring seamless connectivity between sales, reporting, accounting, and fiscalization as we support merchants in scaling globally.As part of a dynamic, cross-functional team composed of Product Managers, Engineering Managers, fellow engineers, and occasionally Product Designers and Data Analysts, you will collaborate closely to innovate and enhance our offerings.Your RoleAs a Backend Engineer, you will not just write code; you will architect solutions that enable different SumUp products to communicate effectively. We foster a culture of extreme collaboration, engaging in daily pair programming, committing to high standards of 'clean' engineering, and adopting an 'AI-native' approach to accelerate our development processes.Key ResponsibilitiesDevelop and enhance high-performance Sales APIs and receipt engines using Kotlin and Spring Boot, ensuring scalability and resilience.Design and maintain robust data schemas and database interactions to manage complex transaction and sales data accurately at scale.Create and document clean, public-facing APIs that empower other engineering teams to integrate their features with the Sales Platform independently.Work on projects that link transaction data with essential business systems like reporting, accounting, and global fiscalization.Engage in pair programming to tackle complex concurrency and architectural challenges while maintaining superior code quality.Oversee the entire development lifecycle, including writing automated tests, managing CI/CD pipelines, and monitoring production service health.Utilize AI coding agents to automate repetitive tasks and enhance our delivery speed.Migrate mission-critical domain logic from external systems to streamline and centralize the 'Sales' experience within our ecosystem.Who You AreYou possess over 2 years of experience in backend engineering with the JVM stack, preferably using Kotlin and Spring Boot.You have a strong grasp of software design patterns and principles, enabling you to create efficient and maintainable code.

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.

Are you ready to take your career to the next level? Join dev2 as a Senior Data Engineer specializing in Python and play a pivotal role in our data-driven projects. You will work closely with cross-functional teams to design and implement scalable data solutions that drive innovation and efficiency.In this role, you will:Design, develop, and maintain data pipelines and ETL processesCollaborate with data scientists and analysts to optimize data storage and retrievalEnsure data quality and integrity through rigorous testing and validationContribute to architectural discussions and guide best practices

Join Our Team as a Lead Backend Engineer At N26, we're redefining banking with a focus on innovation and technology. As a member of our Intelligent Operations Platforms (IOP) and Assistance segments, you will play a critical role in enhancing our operations and empowering other tech teams through a robust platform approach. We are looking for a skilled Lead Backend Engineer to join our dynamic cross-functional teams. You will work within a microservice architecture, primarily utilizing Java and Kotlin with Spring Boot, to evolve our product offerings. Our teams thrive on collaboration, knowledge sharing, and autonomy, ensuring that every member's voice is heard and valued. As a Lead Engineer at N26, you will be at the forefront of integrating the latest technological advancements while tackling complex and engaging challenges daily. Your Responsibilities: Shape your team’s technical landscape by collaborating closely with Product Managers and Engineering Managers to manage product technical roadmaps and dependencies, thereby minimizing technical debt. Architect and build high-availability, high-performance web applications that serve as the backbone of our internal operations. Promote a culture of solid engineering delivery by demonstrating best practices, writing clean, well-tested, and well-refactored code, and deploying it to production frequently. Integrate AI: Implement new features and integrations with foundational models and automation systems to empower our back-office teams. Scale systems by optimizing, measuring, and monitoring distributed systems for seamless and continuous software delivery. Mentor team members and document processes to foster engineering excellence and knowledge sharing, avoiding silos. Lead initiatives aimed at enhancing our engineering culture across the company and explore ways to maximize team and organizational effectiveness. Participate in recruitment and employer branding initiatives to strengthen our engineering team. Qualifications for Success: Engineering Mindset & Design: Proficient in design patterns with a solid understanding of object-oriented programming and distributed systems principles, utilizing methodologies such as Domain-Driven Design and architectural patterns like Hexagonal, Event-Driven, and Microservices. Possess a strong track record of applying engineering best practices, including Clean Code, Test-Driven Development (TDD), Behavior-Driven Development (BDD), and deep observability. Experience in AI-augmented development frameworks and practices, showcasing the ability to leverage AI in enhancing software solutions.

This position is based in Berlin, Germany. Relocation support is available for those who need it. Role overview Trade Republic is building Europe’s largest savings platform, serving over 10 million customers in 18 countries and managing assets exceeding €150 billion. The team focuses on making wealth-building accessible, secure, and free for everyone. As a Backend Engineer (Haskell), you will help develop and improve products that support this mission. What you will do Design, build, and test backend services and products using tools from the JVM ecosystem, including Kotlin, Spring, Vert.x, Hibernate, jOOQ, and Haskell. Architect and maintain cloud services on AWS, prioritizing high availability, low latency, and scalability. Set up and manage automated software delivery using GitHub Actions, container-based CI/CD pipelines, and Kubernetes. Requirements At least 5 years of software engineering experience, ideally in the JVM ecosystem, with hands-on production experience in Haskell. Solid grasp of functional programming concepts and practical experience with the Haskell toolchain (GHC, Cabal, Stack, and related libraries). Demonstrated ability to develop and deploy scalable features in a service-oriented architecture. Dedication to building reliable, maintainable software through iterative development and continuous delivery. Experience creating foundational platform services that support and speed up product development (background in platform-focused teams is a plus). Our culture Trade Republic values ownership, high standards, and energy. The team is committed to delivering results and tackling major challenges in Europe’s financial landscape.

About commercetools At commercetools, we believe that true innovation is built on a solid foundation, which is a harmonious blend of our cutting-edge products and dedicated team. Our diverse group of innovators, builders, and problem-solvers have redefined the landscape of commerce architecture, fostering a culture of exploration and experimentation. Together, they drive the evolution of commerce, empowering ambitious brands around the globe. We are committed to facilitating the next generation of commerce for our clients. From AI-powered tools that enhance business decisions to seamless integration of digital and brick-and-mortar shopping experiences, we enable our clients to experiment, scale, and thrive without constraints. In our environment, the best ideas prevail regardless of their source. Here, you will have the autonomy, resources, and trust to shape the future of commerce while also crafting your own journey.

About the CompanyAffinidi is a pioneering technology firm committed to revolutionizing data ownership. We empower both businesses and individuals to take control of their data, offering a holistic approach to managing their digital identities while prioritizing privacy and security.Our innovative technology facilitates decentralized digital identity solutions, ensuring that everyone has the right to own and manage their data. We are dedicated to building a trusted ecosystem for digital credentials that enables secure data and service exchanges across various sectors and borders.About the Role:We are looking for a Senior Backend Engineer (Rust) who is solution-oriented and possesses proven experience in backend development using Rust. You will be responsible for designing, implementing, and maintaining robust backend systems that align with our vision of secure, decentralized data management.

Greetings from AMBOSS! We are on the lookout for a Senior Backend Engineer specializing in PHP to join our dynamic Educator Experience team and help us redefine the future of medical education!About AMBOSSFounded in 2012, AMBOSS is a pioneering learning and clinical decision support platform dedicated to empowering physicians worldwide to provide the best possible care. By leveraging cutting-edge technology, we are transforming how medical professionals acquire and utilize scientific knowledge. Our team, known as AMBOSSians, shares a passion for supporting clinicians and medical students alike, striving for success that resonates with our mission—when a user expresses, “AMBOSS makes practicing medicine enjoyable and efficient,” we know we are making a difference. Curious about our vibrant culture? Check out our video to discover what sets us apart.Why This Role is ExcitingAs a Senior Backend Engineer at AMBOSS, you will play a pivotal role in enhancing the user experience for doctors and medical students, enabling them to make informed decisions that affect the healthcare of billions globally. We are looking for an individual who is deeply passionate about harnessing technology to its fullest potential and leading the charge in engineering excellence. Join our agile team in transforming educational institutions, such as medical schools and clinics, by optimizing the use of AMBOSS resources in their teaching methods.Your Responsibilities:Lead engineering projects for our innovative B2B product, “Educator Tool,” from inception to deployment.Promote best practices in coding standards, testing, and maintainability.Collaborate with cross-functional teams to establish project requirements and specifications.Respond to ad-hoc requests from customer support.Contribute to a culture of continuous learning by sharing knowledge within the AMBOSS community.Your Qualifications:Extensive experience with PHP and its modern frameworks such as Symfony, Slim, and Laravel, alongside proficiency in MySQL.Comprehensive experience across the full web development lifecycle, including requirements analysis, design, development, testing, and deployment.

Join almedia as a Backend Engineer specializing in FastAPI. In this role, you will be responsible for developing and maintaining robust backend services that power our innovative digital solutions. Collaborate with cross-functional teams to create scalable applications that enhance user experiences.

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

Join our innovative team as a Backend Engineer focused on enhancing our Search Engine capabilities. In this role, you will be instrumental in developing and optimizing backend solutions that improve search efficiency and user experience. Leveraging your expertise, you will collaborate with cross-functional teams to design scalable and robust systems that meet our rapidly growing needs.