Senior Backend / Data Platform Engineer

WHO WE AREAt Proxima Fusion, we are on a transformative mission to revolutionize sustainable energy. Leveraging the innovative W7-X stellarator and the latest technological advancements, we are paving the way for commercially viable fusion power solutions.Our work in stellarator optimization, driven by state-of-the-art computation and machine learning, is pu…

As a Senior Backend / Platform Engineer at causaprima, you will take charge of the foundational platform that empowers our agents. This includes overseeing an event-driven architecture, managing data pipelines, integrating with customer accounting systems, and ensuring the infrastructure is reliable, auditable, and swift.Key ResponsibilitiesEvent Store Management — Lead the development of an append-only PostgreSQL event store featuring tamper-evident hash chaining, real-time event distribution, agent replay capabilities, and schema versioning.Cryptographic Signature Infrastructure — Implement key management and signature verification for all agent events, including establishing approval chains for external actions.Workflow Constraint Engine — Develop a robust gateway that verifies authorization before any external action (email, payment, API call) is executed.PII Vault & GDPR Compliance — Ensure the safe storage of personal data through isolated, encrypted solutions, allowing for the right to erasure and data residency per region.Multi-Tenancy Architecture — Design systems that incorporate row-level security and tenant isolation across all data stores, including tenant-scoped LLM API keys.Authorization (Cerbos) — Implement attribute-based access control for agents and humans with deterministic policy evaluations, ensuring LLMs are not responsible for authorization decisions.MCP Security Layer — Establish authentication protocols, capability-based scoping per partner, and rate limiting for the Model Context Protocol endpoint.Database Architecture — Drive PostgreSQL schema design, create effective indexing strategies, and enhance performance tuning and read replica topology.

Full-time | Munich | Seed Stage | Equity + SalaryJoin Us in Building a Transformative CompanyAt Knowlix, we are dedicated to amplifying the productivity of small businesses tenfold. Our goal is to establish ourselves as the premier platform for human-AI and AI-to-AI collaboration.Although we are in the early stages, we have grand ambitions. This is a unique chance for you to influence a product that will reach millions and set industry standards.We prioritize speed, frequent iterations, and exceptional quality. If you are passionate about building, deploying, and scaling innovative solutions, particularly leveraging AI for significant improvements, this is the opportunity for you.Why Choose Knowlix Now?We are a well-funded seed-stage startup, supported by top-tier investors and seasoned founders.Our technology is functional and our initial users are experiencing its transformative effects.We are targeting a vast market with a product that revolutionizes work dynamics.As one of our early team members, you will have significant influence and ownership over the company’s direction.We believe that rapid progress is achieved through focused efforts and continuous iteration.This isn't just a job; it's a chance to contribute to a once-in-a-generation company if we execute our vision effectively.The RoleWe are seeking a pragmatic and enthusiastic Backend Engineer with robust skills in Python and a strong understanding of SQL and cloud infrastructure. You will collaborate closely with AI researchers, product designers, and DevOps engineers to create a seamless interface between human users and our AI systems. Familiarity with Go, Rust, and Swift is advantageous, especially for future components such as microservices or mobile interfaces.

Join vCluster Labs as a Senior Backend Software Engineer, where your coding expertise will play a pivotal role in shaping the future of Kubernetes multi-tenancy. In this influential position, you will be a key architect of the vCluster Platform, navigating intricate Kubernetes internals to develop tools utilized by top engineering teams globally.Your responsibilities will include:Diving Deep into Kubernetes: Collaborate closely with Kubernetes internals, pushing the limits of container orchestration.Expert Go Development: Craft high-performance, resilient Go code that powers the core functionalities of the vCluster platform.Taking Ownership: Exhibit complete ownership of your projects; self-motivated and capable of guiding feature development from technical design to production without constant supervision.Open Source Contribution: Collaborate with the community and contribute to open-source initiatives, shaping the next generation of tenancy models with scalable solutions for resource sharing and isolation beyond basic namespaces.Solving Technical Challenges: Address complex engineering problems that require a profound understanding of systems architecture.This position may be ideal for you if you possess:Kubernetes Expertise: Extensive knowledge of Kubernetes internals, including architectural patterns, networking, and storage.Proficiency in Go: Strong programming capabilities in Go, translating Kubernetes insights into clean, efficient code.A Builder Mentality: Passion for building outside work, demonstrated through active GitHub projects or open-source contributions.High Agency: A self-driven individual thriving in environments where you can independently identify and solve problems.Startup Experience: A background in high-growth environments, comfortable with ambiguity and eager to make an impact.Bonus qualifications include:...

Atolls is the world's largest community-driven shopping platform, operating in over 20 markets.We empower millions to make informed spending decisions through discovery, evaluation, and (re-)purchase by connecting them with the right brands and retailers.With a team of over 1,000 professionals spanning 10 countries, we create products that are utilized daily on a global scale. Here, you'll enjoy genuine ownership of your work and witness the tangible impact of your contributions. Want to influence the shopping experiences that people trust? Read on.About This Role:We are seeking a Senior Backend Engineer (TypeScript, NestJS/Node.js) to join our Fulfilment team in Munich or to work remotely within Germany. Your role will be crucial in enabling our customers to earn and redeem cashback on our rewards platforms, thereby creating outstanding user experiences and empowering consumers to make informed shopping decisions. As an integral part of our team, you will directly contribute to building and enhancing the digital platforms our users depend on throughout their shopping journeys.Your contributions will influence how millions of consumers engage with our platforms, guiding them to make intelligent, equitable, and rewarding choices.Our Benefits:At Atolls, we are committed to fostering both your professional and personal development. Here’s what we offer: • 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, ensuring you have ample time to recharge. • A flexible hybrid working model to help you balance work and life. • Access to a learning budget and internal training to facilitate your growth in your role. • Mental health coaching to support your well-being.

About Apaleo Apaleo builds an open, API-first property management platform for the hospitality industry. The company’s modular infrastructure helps hotels customize their technology, automate routine work, and deliver tailored guest experiences. Apaleo’s platform includes advanced applications and AI agents that adapt to each guest’s needs. Role Overview The Senior Backend Engineer (.NET) will shape the foundation of Apaleo’s public API layer. This position focuses on creating the Storefront API, a scalable interface that lets external systems, such as ChatGPT and booking platforms, connect directly with Apaleo. The work combines backend engineering with AI, starting from a clean API design and moving toward systems that support intelligent, agent-driven guest interactions. What You Will Do Design and implement the Storefront API for Apaleo’s property management platform Develop scalable, reliable backend solutions in .NET Enable integrations with external partners and booking platforms Build systems that support agentic booking and AI-powered guest experiences Work with a high degree of autonomy on architecture and deployment decisions Location This role is based in Munich.

About UsAt Visium, we empower enterprise leaders to define their AI and Data strategies, drive extensive transformations, and seamlessly integrate AI into their operations, ensuring their organizations are equipped for future challenges.With our deep expertise in strategy, architecture, cloud engineering, analytics, artificial intelligence, and machine learning, we enable our clients to harness and scale the potential of their data.We are committed to pioneering a brighter future by building ethical and resilient organizations. Join our community of curious, ambitious, and good-hearted individuals who strive to create an awe-inspiring world – our Visiumees.Are you ready to embark on this journey with us?Our Platform Engineering TeamThe Platform Engineering team is the backbone of our data and AI capabilities, creating reliable, scalable, and secure platforms for mission-critical solutions. We leverage our expertise in data engineering, cloud engineering, software development, data modeling, and architecture to build platforms that meet both current and future business needs.Your Role Involves:Designing and implementing cloud-native platforms and infrastructure.Creating data pipelines, warehouses, and lakehouses to support AI workflows.Developing software solutions that utilize or enhance platform capabilities.Establishing data models and architectural standards to ensure consistency and scalability.Maintaining the security, reliability, and sustainability of all platform components.RequirementsWe are eager to connect with exceptional talent. By joining our talent pool, you will be matched with relevant opportunities as they arise within our Platform Engineering team. Here’s what we look for:Core Requirements:Proven experience in data engineering, cloud engineering, or software development.Familiarity with cloud platforms (Azure preferred) and modern data infrastructures.Understanding of data modeling, architecture, and platform design.Hands-on experience with ETL/ELT pipelines, data warehouses, or lakehouses.Knowledge of containerization, orchestration, and CI/CD pipelines.A strong problem-solving mindset and a sense of ownership.Preferred Qualifications:Experience in end-to-end platform development.Exposure to MLOps, analytics, or AI pipeline development.Ability to influence architectural and technical strategies.Excellent communication skills and the ability to work well in cross-functional teams.Fluency in French or German is a plus.Benefits:We offer a competitive compensation package along with a yearly education budget to enhance your learning experience.

Join us at The Exploration Company, where we are pioneering the development, production, and operation of Nyx, a groundbreaking modular and reusable space orbital vehicle. Designed for future refueling in orbit, Nyx is set to transport cargo and, in the long term, potentially carry humans.We are seeking a skilled and experienced Senior Engineer for Functional Platforms Assembly, Integration, and Verification (AIV) to contribute to our mission. Your focus will be to finalize system-level verifications for our functional platforms, including Software in the Loop, Processor in the Loop, Hardware in the Loop, and Functional Simulation Facility, by defining, preparing, and leading associated test campaigns.

Atolls: The World’s Largest Community-Driven Shopping PlatformWe empower millions to make informed spending decisions, connecting them with the best brands and retailers across 20+ markets.Join our diverse team of over 1,000 professionals in 10 countries and contribute to products that impact global shoppers daily. Ready to make a difference? Read on!About This Role:We are seeking a Senior Java Backend Engineer to enhance our dynamic engineering team in Munich. In this pivotal role, you will be instrumental in designing, developing, and scaling high-performance backend systems utilizing cutting-edge Java technologies and cloud-native architectures. Ideal candidates are those who thrive in tackling complex systems, prioritize code quality, and possess a robust architectural perspective.Our Benefits:At Atolls, we prioritize your professional and personal growth. Here's what you can look forward to:A culture that champions personal and professional development, along with ample internal mobility opportunities.A welcoming and innovative team that values diverse perspectives.32 days of paid vacation plus an additional day off for your birthday.Flexible hybrid work arrangements to help balance your professional and personal life.Access to a learning budget and internal training resources to foster your development.Support through mental health coaching to promote well-being.Regular global and local events to celebrate achievements and foster connections.The opportunity to take a sabbatical after three years of service.A cloud-based setup that allows for collaboration from anywhere.*These benefits are applicable globally, with additional local perks based on your location.Responsibilities:As a Senior Java Backend Engineer, your key responsibilities will include designing and implementing robust backend solutions, ensuring system scalability, and maintaining high standards of code quality.

Intrinsic Robotics, a pioneering venture within Alphabet, is dedicated to revolutionizing the landscape of industrial robotics. Our team is driven by the belief that breakthroughs in artificial intelligence, perception, and simulation will reshape the capabilities of industrial robotics in the near future, with software and data at the heart of this transformation. Our mission is to make intelligent industrial robotics accessible and usable for a multitude of businesses, entrepreneurs, and developers. We are a vibrant group of engineers, roboticists, designers, and technologists, all committed to unleashing the creative and economic potential of industrial robotics.Role OverviewIn your capacity as a Senior Research Engineer specializing in Data Engine, you will spearhead the design and implementation of systems that facilitate the training, deployment, and utilization of large-scale AI models for robotics. Your leadership will shape the technical direction, mentor fellow engineers, and ensure the establishment of robust, scalable data pipelines and machine learning infrastructure essential for enhancing the capabilities of robots in real-world settings. Your contributions will empower both internal teams and external partners by delivering accessible tools and infrastructure for integrating advanced AI methodologies into robotic applications.Key ResponsibilitiesLead the architecture and execution of infrastructure for training and deploying large-scale robotic foundation models.Manage the development and upkeep of data pipelines for the collection, processing, and integration of real-world robot data into machine learning workflows.Enable machine learning researchers and engineers with user-friendly tools and infrastructure for leveraging AI techniques in robotics.Collaborate with product and engineering teams to specify infrastructure needs and deliver effective solutions for both partners and customers.

As a Senior Platform Architect at ServiceNow, you will play a pivotal role in shaping the architecture of our next-generation cloud platform. Your expertise will drive innovation and ensure the scalability and reliability of our services. You will collaborate with cross-functional teams to define and implement architectural strategies that meet both current and future business needs.

Role overview Blacklane seeks an Engineering Manager - Platform to join the team in either Berlin or Munich. This leadership position centers on building a unified internal platform, turning a collection of tools and processes into a product that helps developers succeed. The manager will guide a team of engineers through growth, making it easier for product teams to deliver efficiently and with fewer obstacles. What you will do Lead and coach a team of engineers, encouraging a collaborative and high-performing culture. Shape the platform’s direction alongside the Staff Engineer, focusing on adaptability rather than a fixed roadmap. Manage delivery timelines and scope, balancing quality with progress. Turn unclear requirements into clear, actionable deliverables. Drive improvements in developer experience, infrastructure, and Site Reliability Engineering (SRE). Keep communication open with other Engineering Managers to manage expectations and dependencies. Support team growth, performance, and structure through ongoing learning and coaching. Requirements Experience leading high-performing teams in Platform, Backend, or Data Engineering. Ability to navigate ambiguity and make trade-off decisions that keep projects moving. Initiative to address issues, build business cases, and gain support for solutions. Dedication to seeing projects through to completion and meeting objectives. Motivation to learn and tackle complex challenges. Location This role is based in Berlin or Munich.

airapps is looking for a DevOps Engineer focused on backend development to help build and maintain scalable cloud-based systems. This position is based in Munich and works closely with teams across the company. Role overview This role centers on designing, implementing, and supporting backend infrastructure for airapps’ cloud applications. Collaboration with cross-functional teams is a key part of the job, ensuring that backend solutions meet business needs and technical standards. What you will do Work with teams to design and maintain backend systems for cloud-based products Use expertise in cloud services, automation, and infrastructure management to improve deployment processes Support and enhance CI/CD pipelines to increase system reliability Contribute ideas and technical solutions that help drive operational efficiency Requirements Experience with cloud services and backend infrastructure Knowledge of automation and deployment processes Ability to collaborate with cross-functional teams Strong problem-solving skills and an innovative approach

ABOUT USAt Avelios Medical, we are committed to developing a premier software platform dedicated to the data-driven digital transformation of hospitals and patient care. Our innovative modular software platform is designed to digitize and enhance workflows in healthcare settings using the latest technology, all while ensuring user-friendliness. Our mission is to empower hospitals, doctors, and nurses to deliver the highest quality patient care. As we rapidly expand, we invite diverse talent to join our team and contribute to the advancement of healthcare.THE TEAM AND ROLEIn your role as a (Senior) Backend Engineer (All Genders), you will be instrumental in building a robust and secure infrastructure that supports our platform within clinical environments. You will collaborate with our core development team to design scalable services, optimize performance, and implement industry best practices in backend engineering, all aimed at making a significant impact in healthcare.YOUR RESPONSIBILITIESWork closely with our core development team to create secure and reliable backend services.Design, test, deploy, and maintain crucial Avelios services and infrastructure.Develop scalable and high-performance software tailored for the healthcare context.Promote and implement best practices in fast and secure software engineering.Utilize modern technologies to address complex challenges in clinical digitization.Contribute innovative ideas to enhance system architecture, usability, and performance.YOUR QUALIFICATIONSDegree in Computer Science, Informatics, Business Informatics, or related practical experience.Proficiency in at least one of the following programming languages: Java, C++, or Rust.Demonstrated coding experience, with GitHub contributions or personal projects being advantageous.A strong desire to learn and work with new technologies and tools.Excellent problem-solving skills and a proactive, solution-oriented approach.Fluency in English is required.YOUR BENEFITSDiverse and engaging tasks with opportunities for ownership.An international and informal team structure that fosters motivation and collaboration.

airapps seeks a Backend Quality Assurance Engineer based in Munich. This position centers on upholding and enhancing the quality of backend systems, collaborating closely with development teams to help deliver dependable software releases. Key responsibilities Develop and execute thorough test plans for backend services Partner with developers to identify and document software defects Contribute to continuous improvement of software quality Role overview This role requires careful attention to detail and a commitment to supporting reliable backend operations. The Backend Quality Assurance Engineer will play an active part in ensuring that backend releases meet airapps' standards for quality and stability.

Role overview apaleo is looking for a Staff Backend Engineer with expertise in .NET to join the team in Munich. The main focus is on designing, building, and maintaining backend services that power apaleo’s hospitality products. What you will do Design and implement backend systems using .NET technologies Maintain and enhance existing services for better reliability and performance Collaborate with engineering, product, and design teams to develop scalable solutions Contribute to delivering a strong user experience through robust backend systems Location This role is based in Munich.

Veeam is the Data and AI Trust Company, dedicated to empowering organizations to fully understand, secure, and fortify their data and artificial intelligence systems. As a leader in data resilience and security posture management, Veeam is built for the integration of identity, data, security, and AI risk management. With headquarters in Seattle and offices across more than 30 countries, Veeam protects the interests of over 550,000 customers globally, who rely on us to keep their businesses operational. Join us in our fearless journey of growth, learning, and making a significant impact for some of the world's most prominent brands.As a Senior Sales Engineer focusing on Data & AI Security, you will play a pivotal role in driving technical excellence within our sales team, particularly within the Securiti AI portfolio, following our acquisition of Securiti AI, a leader in AI-driven data security posture management. You will collaborate closely with a Securiti Sales Specialist and provide technical support to 3-5 Account Executives and Veeam Solution Engineers, acting as the key technical subject matter expert.Your responsibilities will include guiding customers through the needs assessment process to solution design, delivering engaging hands-on demonstrations and proof-of-concept projects to highlight our value proposition. Success in this role necessitates a robust technical background and the ability to cultivate trustful client relationships.

JetBrains has developed tools for software teams since 2000. By automating routine checks and corrections, JetBrains products help developers focus on building and shipping software. The goal: make development more productive and creative. Role overview This Backend Customer Success Engineer role centers on supporting engineering teams as they adopt Kotlin for backend development. The position focuses on helping organizations successfully bring Kotlin into production environments. What you will do Guide organizations through the process of moving from Java to Kotlin, assisting with migration, integration, and scaling. Troubleshoot technical challenges that arise during the transition and support teams as they progress from initial experimentation to stable production use. Work with potential users to clarify how Kotlin adoption works and help design migration plans that fit their specific needs. Locations Amsterdam, Netherlands Berlin, Germany Munich, Germany Prague, Czech Republic Remote, Germany

D ONE is an elite consultancy firm specializing in data, artificial intelligence, and transformation initiatives.We empower organizations to translate their ambitions into tangible impact by aligning strategic goals, establishing robust data foundations, delivering scalable high-impact solutions, and fostering trust through governance and a people-centric approach. Operating from Zurich, Munich, and Athens, we leverage our extensive expertise across the entire data value chain to support clients throughout Europe. Our methodology is pragmatic, focused on people, and designed to create lasting value.In this position, you will guide our clients through the conception, planning, and execution of data and AI solutions. Based in our Munich office, you will collaborate with your project team to deliver the high quality and reliability for which we are renowned.Your Responsibilities:Assessing client requirements and designing customized data solutions.Engaging in multiple project areas, including cloud engineering, infrastructure, data engineering, data science, and generative AI applications.Communicating findings and insights to stakeholders and management.Occasionally traveling to Switzerland and other international locations to meet clients and collaborate with our headquarters team in Zurich.What You Bring:A university degree in Computer Science or a related field.A minimum of 5 years of relevant work experience.Extensive hands-on experience with contemporary data engineering tools and platforms (e.g., Azure Data Factory, Databricks, Synapse, dbt, Palantir Foundry), along with proficiency in SQL, Python, and Spark.Experience in designing and implementing generative AI solutions, such as retrieval-augmented generation (RAG) systems, copilots, intelligent search, and workflow automation.A strong grasp of data modeling and data warehousing principles.A pragmatic and results-driven mindset.Excellent communication skills in English.What We Offer:A straightforward and low-distraction environment that allows for a focus on what truly matters.An international team of skilled professionals from diverse backgrounds, who are ambitious, enjoy challenges, and value a positive work atmosphere.Growth opportunities through our D ONE Academy, including mentoring programs, knowledge-sharing sessions, expert groups, and tailored training in soft skills and leadership.Regular team-building events and social gatherings.To Succeed in This Role, You Should:Be committed to understanding your clients' needs.Deliver exceptional results that provide high business value in an easily understandable format.Possess the intellectual agility needed to facilitate smooth collaboration.Value innovative and collaborative teamwork.

Join brainlab as a Senior Software Engineer in our Data Management team, where you will leverage your expertise in C#, Go, or C++ to develop cutting-edge software solutions. You will collaborate with cross-functional teams to enhance data processing capabilities and contribute to innovative projects that impact healthcare technology.