System Architect for Simulations & Models

At PsiQuantum, we are on a mission to create the first truly functional quantum computers—devices that can achieve the revolutionary advancements that have long been anticipated in the field. Founded in 2016, our primary objective is to develop and implement million-qubit, fault-tolerant quantum systems.Quantum computers utilize the principles of quantum mec…

Ramboll is on the lookout for passionate professionals to enhance our railway power supply team in Berlin. As a member of our team, you will play a vital role in developing sustainable energy solutions that power the future of transportation. We invite you to contribute your expertise in a collaborative environment where innovation thrives.

Are you a seasoned professional in telecommunications with a passion for railway infrastructure? Join our dynamic team at Ramboll, where you will play a pivotal role in shaping telecommunication solutions for railway projects. You will be responsible for designing and implementing advanced telecommunication systems, ensuring compliance with industry standards, and collaborating closely with multidisciplinary teams to deliver innovative and effective solutions.

Join our dynamic team at Ramboll as a Senior Transportation Infrastructure Planner, specializing in railway infrastructure projects. In this role, you will lead innovative design solutions, collaborate with multidisciplinary teams, and significantly contribute to the development of sustainable transportation systems.Your expertise will be pivotal in ensuring project success, from initial planning stages to execution. We value creativity, efficiency, and a commitment to excellence, and we are looking for someone who shares these values.

Join LGC Group as a dedicated Industrial Mechanic / Equipment Technician in our Berlin facility. In this crucial role, you will be responsible for the maintenance and repair of a variety of industrial machinery and equipment. Your expertise will ensure optimal performance and safety, contributing significantly to our operational excellence.As a key part of our engineering team, you will perform scheduled maintenance, troubleshoot machinery issues, and implement innovative solutions to enhance equipment reliability. Your hands-on experience and technical skills will be essential for driving improvements and supporting our commitment to quality.

Join our dynamic team at examplecorpsandbox in Berlin as a Software Developer, where you'll play a pivotal role in designing and implementing cutting-edge software components for state-of-the-art laboratory instruments. We value your expertise and passion for innovation, offering you an opportunity to contribute meaningfully to projects that enhance both your skills and our product offerings. In this agile environment, you will develop desktop software solutions using modern technologies including C#, WPF, Angular, and Git. Collaborate with a talented interdisciplinary team and leverage the latest collaboration tools like Jira and Confluence to ensure the successful delivery of high-quality products from design to release.

About the RoleAs a Senior Design and MEP Manager, you will be instrumental in spearheading retrofit, refurbishment, and alteration projects across HelloFresh’s international distribution center network. Your expertise in project management and in-depth knowledge of MEP and architectural disciplines will ensure that upgrades, capacity expansions, and compliance modifications are executed with safety, efficiency, and minimal impact on ongoing operations.This role is primarily focused on brownfield environments, necessitating close collaboration with Project Managers, operations teams, external designers, and contractors to oversee design, readiness for execution, and manage technical risks across various countries.

bew is seeking an Electrotechnician specializing in Protection Technology to join the team in Berlin. This role plays a key part in supporting the safety and performance of heat production systems by applying electrical engineering skills. Responsibilities Design safety protocols for electrical systems used in heat production facilities Implement and maintain protection technology within ongoing operational projects Promote reliability and efficiency in energy solutions by upholding rigorous safety standards Requirements Solid background in electrical engineering Experience working with safety technology or protection systems Dedication to maintaining high standards in energy and workplace safety This position offers the chance to help bew deliver secure, high-quality energy solutions in Berlin.

About Air Apps Air Apps develops AI-powered tools to help people plan, work, and manage resources more effectively. Founded in 2018 in Lisbon, Portugal, the company has grown to serve users worldwide, with over 100 million downloads. Air Apps remains self-funded and operates from Lisbon and San Francisco. Role Overview The Software Architect (also referred to as Solutions Architect) will define and oversee the system architecture for Air Apps’ AI-driven platform. This role works closely with engineering teams, product managers, and stakeholders to design solutions that are scalable, secure, and high-performing. The architect helps set the technology strategy, evaluates new tools and frameworks, and ensures best practices in software design, cloud infrastructure, and system integration are followed. Key Responsibilities Design and maintain the overall architecture for the AI-powered platform. Collaborate with cross-functional teams to align architecture with business objectives. Assess and recommend new technologies and frameworks. Ensure security, scalability, and performance across systems. Promote best practices in software design, cloud infrastructure, and integration. Location and Work Setup This is a fully onsite position based in the Lisbon office. Collaboration with cross-functional teams happens in person. Relocation support is available for candidates moving to Lisbon.

Team Overview The AI AML Engineering Squad at SumUp works at the intersection of machine learning and financial crime prevention. The team builds data products and machine learning systems that help keep SumUp's transaction monitoring effective and compliant in 37 countries. Senior Data Scientists here oversee the models, pipelines, and risk scoring that flag and escalate suspicious activities, always with a focus on regulatory standards. What You Will Do Develop, maintain, and improve machine learning models and batch training pipelines for anti-money laundering (AML) transaction monitoring, focusing on detection accuracy, operational efficiency, and regulatory compliance. Design and engineer features for the Feature Store, using AML typologies and suspicious behavior patterns. Work closely with AML investigators to turn domain knowledge into alerting logic and set thresholds. Run sensitivity analyses on synthetic datasets. Prepare governance materials like model cards and ensure documentation meets audit standards. Own the AML Risk Score: analyze what drives it, monitor changes, conduct back-testing, and suggest improvements to features, logic, and thresholds. Work with AML Operations, Product, and Engineering teams to turn stakeholder needs into practical, scalable data science solutions. Track and improve detection performance metrics, adjust solutions for regional compliance, and contribute to system design documentation. What We Look For Advanced Python skills, including hands-on data engineering experience and a background in building production-ready machine learning workflows. Expertise in feature engineering and unsupervised machine learning. Ability to translate domain knowledge into model behaviors and alerting logic. Experience deploying machine learning applications and managing end-to-end pipelines (monitoring, versioning, rollback), especially in regulated settings. Location This position is based in Berlin, Germany.

Role Overview bew is looking for an E-Technology Coordinator to support the maintenance department at HKW Marzahn / Klingenberg in Berlin. This position focuses on the management and upkeep of electronic systems within the facility. What You Will Do Coordinate maintenance schedules for electronic technologies across the site Monitor and help ensure compliance with safety regulations and standards Work closely with engineering teams to improve system performance and reliability Oversee the implementation of new electronic technologies in the facility Location Berlin (HKW Marzahn / Klingenberg)

scalablegmbh is looking for a Quant Developer with a focus on Wealth Management to join the Berlin office. This position centers on developing and implementing financial models and algorithms that support investment strategies. Role overview The Quant Developer will collaborate with the financial engineering team to strengthen product offerings. The work involves applying quantitative methods to create tools and solutions that help improve investment outcomes for clients. What you will do Design and build advanced financial models tailored to wealth management needs Develop algorithms that support investment strategies Work closely with the financial engineering department to refine and expand product features Contribute to delivering investment solutions for clients Location This role is based in Berlin.

We are currently partnering with several cutting-edge startups in search of talented Backend Engineers to enhance their existing teams. Our reputation for delivering excellent candidates through referrals has established our clients as outstanding employers, offering the opportunity to work on exciting projects within dynamic international teams.

Join dreessommerse as a Junior BIM Coordinator in the dynamic EPCM (Engineering, Procurement, and Construction Management) industry. In this role, you will support our project teams in the implementation and management of Building Information Modeling (BIM) processes. You will collaborate with engineers, architects, and project managers to ensure that all BIM-related tasks are executed efficiently and effectively.

Elevate Your Career with Trade Republic Trade Republic stands as Europe's leading savings platform, proudly operating across 17 countries and catering to over 8 million customers who trust us with assets exceeding €105 billion. Our ambition is to empower individuals to cultivate wealth through seamless, secure, and cost-free access to financial systems. Here, you'll have the chance to advance your career while collaborating with a team of exceptional talents and cutting-edge technology, forging a positive future for millions. Your Responsibilities Take ownership of the mobile testing platform, encompassing frameworks, pipelines, device labs, and test data. Establish an efficient testing strategy and quality gates to facilitate swift and confident releases. Enhance speed and reliability through techniques like parallelization, sharding, and caching; proactively identify, quarantine, and resolve flaky tests. Develop robust visibility and reporting tools: dashboards, coverage metrics, flaky heatmaps, and release confidence indicators. Empower teams to independently maintain quality through comprehensive runbooks, standards, audits, and coaching, minimizing reliance on central QA. What We Seek Minimum of 3 years in mobile test automation or quality engineering for Android and/or iOS at scale. Extensive expertise with Espresso and XCTest frameworks. Proficient in CI/CD practices for mobile testing and release pipelines, including technologies like GitHub Actions, Kubernetes, Gradle/AGP, and xcodebuild. Strong command of Kotlin or Swift, with the ability to debug across UI, network, storage, and concurrency. Exceptional communication skills and ability to influence cross-functional teams. Deep knowledge of at least one cross-platform tool, such as Appium, Detox, or Maestro, is a significant advantage. Familiarity with device labs (emulators/simulators, Firebase Test Lab, BrowserStack, Sauce Labs, AWS) is a big plus. Mobile Test Automation Tech Stack Android: Espresso, JUnit, UI Automator; Gradle, AGP, Marathon. iOS: XCTest, XCUITest; xcodebuild/xctest. CI/CD: GitHub Actions; Kubernetes; Maestro; caching/sharding; artifact management. Quality tools: Allure TestOps, Danger, SonarQube, Detekt/Ktlint, SwiftLint. Observability: Crashlytics/Sentry, OpenTelemetry. Why You Should Apply Today Our culture is designed to reward initiative and drive, fostering a collaborative and innovative environment.

About The RoleAt think-cell, we are dedicated to revolutionizing the way professionals create impactful business presentations. By integrating advanced automation and assistance features, we enhance our product to serve over 1.3 million users globally. In this exciting role, you will transform innovative ideas and cutting-edge AI concepts into robust features that redefine user experience.Your responsibilities will include developing production-ready systems that seamlessly connect modern backend services with user-friendly interfaces. Collaborating closely with C++ engineers on our core product and AI engineers pushing the boundaries of automation, you will play a pivotal role in bringing new functionalities from concept to everyday use.This position is perfect for engineers who take pride in crafting clean, scalable systems, prioritize code quality, and thrive in a collaborative environment where impactful features are regularly delivered.

Join our dynamic team as a Customer Service Technician in the vibrant Berlin/Brandenburg region. You will play a crucial role in ensuring customer satisfaction by providing top-notch technical support and service for our products. Your expertise will help us maintain our reputation for quality and reliability.

Join our dynamic team at Ramboll Group as a Project Leader, where you will leverage your expertise in data center planning to oversee and drive comprehensive projects. Your leadership skills will be crucial in guiding teams, managing stakeholders, and ensuring project objectives are met efficiently and effectively.

Join our dynamic team at dreessommerse as a (Senior) Technical Planner specializing in HVAC systems. In this pivotal role, you will lead the design and implementation of innovative heating, ventilation, and air conditioning solutions for a variety of projects. Your expertise will guide our clients through the entire planning process, ensuring compliance with all regulations while achieving optimal energy efficiency.

Your MissionJoin our dynamic Engineering team as a Senior Full Stack Developer, where you will not only craft code but also tackle intricate challenges and take ownership of features from inception to deployment. Your contributions will directly influence a product that empowers thousands of construction professionals to shape the world around us.In your initial months, you will:Create and implement innovative AI features, including our newly launched AI agent for editing Bill of Quantities (BoQs) and automated AI bidder recommendations.Work collaboratively with product managers and designers to refine the user experience and set the technical direction of our core offerings.Design and construct modular packages and services within our monorepo to enhance the structure and maintainability of our codebase.Our Engineering CultureAt cosuno, we cultivate a calm, collaborative, and productive engineering atmosphere. We empower our engineers with the autonomy to excel in their work. Our development philosophy includes:Agile & Fast-Paced: We practice trunk-based development and implement daily releases to deliver value quickly to our users.Quality by Default: A thorough Cypress end-to-end testing suite and strict adherence to typing, linting, and formatting standards ensure our codebase remains clean and maintainable.DevOps Mindset: Our efficient CI/CD pipeline deploys to AWS using Kubernetes, with infrastructure managed as code via Terraform.Collaboration & Transparency: We prioritize open dialogue, constructive code reviews, and a culture where the best idea prevails, regardless of its source.Your ProfileWe seek a passionate and experienced engineer eager to build exceptional products. You will thrive in this role if you possess:Extensive professional experience in developing, deploying, and maintaining complex web applications using TypeScript.In-depth knowledge of Node.js for backend development and strong proficiency in React for frontend tasks.A practical problem-solving mindset with a high sense of ownership, comfortable driving projects independently.Experience in collaborative, agile product teams.Excellent communication skills in English.Bonus Points For:Experience with cloud services, DevOps practices, or machine learning frameworks.