Senior Kotlin / Java Software Engineer - Client Technology (m/f/x)

At Enpal, we envision a world where every roof hosts a solar system, every home is equipped with a storage unit, and every garage houses an electric vehicle. Our innovative approach provides a comprehensive solution for decentralized energy, integrating solar systems, battery storage, wall boxes, smart meters, and heat pumps. Central to our mission is our advanced AI-driven platform, Enpal.One+, which seamlessly connects thousands of systems while optimizing electricity procurement and feed-in on the energy market.Are you prepared to contribute to real solutions that enhance the quality of life for countless households? The work you do at Enpal will not only provide clean energy for the future but also drive meaningful change in our energy consumption habits.In the Customer Domain, we take charge of the digital customer experience through our mobile app and web portal, empowering users to manage and monitor their energy systems effectively. Our teams focus on developing customer-centric features that genuinely address user needs while adhering to our high-quality standards. Customer feedback is the cornerstone of our development process.As a Senior Software Engineer (f/m/d), you will tackle intricate backend and platform challenges that underpin our customer-facing products.We pride ourselves on our rapid pace, agility, and the potential for significant career advancement. Our ambition to make sustainable solar energy accessible to everyone thrives on our focus on customer experience, collaboration between software development, product management, and our agile, experiment-driven business model.Join us in honing your skills and participating in the energy revolution as we collectively strive for sustainable change in the world!

At Enpal, our vision is to empower every household with sustainable energy solutions. We strive to have a solar system on every roof, a storage unit in every home, and an electric vehicle in every garage. Our comprehensive approach to decentralized energy encompasses solar systems, battery storage, wall boxes, smart meters, and heat pumps. Central to this mission is our innovative AI-powered platform, Enpal.One+, which seamlessly connects thousands of systems while optimizing electricity procurement and feed-in on the energy market.Are you ready to create solutions that do more than just promise change? Join us at Enpal, where your contributions will deliver clean, renewable electricity and significantly enhance the quality of life for countless households.Your RoleAs a Senior Software Engineer - C# (f/m/x), you will tackle intricate challenges in delivering effective renewable energy solutions. Your responsibilities will range from digitalizing the planning processes for solar panel installations through engaging frontend applications to developing APIs that support real-time energy data management and scaling cloud infrastructure in Azure.We promote an agile environment that fosters rapid personal and professional growth. Our commitment to making sustainable solar energy accessible to all can only be achieved by uniting our customer-centric approach with collaborative efforts between software development, product management, and innovative, experiment-driven business development.Join us to enhance your skills, participate in the energy revolution, and work together towards the sustainable change we aspire to see in the world!Software Development: We prioritize delivering incremental value with each iteration and celebrate improvements that enhance user experiences and contribute to our climate goals.Developer Satisfaction: We aim to enhance stability and automate processes, minimizing the need for late-night deployments and repetitive manual regression tests.Continuous Learning: Whether you're an expert in Kafka or just starting with Azure Bicep, we welcome your knowledge and are committed to supporting your growth through continuous learning opportunities.Architectural Design: You will have the opportunity to work on architecture and technical design, ensuring our solutions are robust and scalable.

At Enpal, we're on a mission to revolutionize how energy is consumed. Our vision is to provide solar systems on every rooftop, battery storage in every home, and electric vehicles in every garage. Our comprehensive solutions encompass everything from solar installations to smart meters and heat pumps, all powered by our advanced AI platform, Enpal.One+. This innovative platform seamlessly connects a multitude of systems, optimizing energy procurement and feed-in across the market.Are you passionate about creating impactful solutions that enhance the quality of life for thousands of households? Your contributions at Enpal will not only help deliver clean energy but also foster a significant shift in energy usage for the future.Your RoleAs a Senior Software Engineer - Node.js (f/m/x), you will tackle intricate challenges in the realm of renewable energy solutions. Your responsibilities will range from digitizing solar panel installation planning with engaging frontend applications to developing APIs that provide real-time energy data. Additionally, you will be instrumental in scaling and managing our cloud infrastructure on Azure.We pride ourselves on our agility and commitment to professional development. Our vision of making sustainable solar energy accessible to everyone thrives on a customer-centric approach, fostering collaboration between software development, product management, and innovative business strategies.Join us in enhancing your professional journey, participating in the energy transformation, and taking shared responsibility for the sustainable future we aspire to create! We eagerly await your application.At Enpal, you will:Build Software: We prioritize delivering incremental value in every iteration, celebrating improvements that enhance user experience and help achieve our climate objectives.Enhance Developer Happiness: We aim to automate processes, reducing manual testing and deployment times, thereby improving the overall stability of our solutions.Grow & Learn: Whether you're an expert in Kafka or new to Azure Bicep, we are committed to facilitating your growth through shared knowledge and resources.Engage in Architecture & Design: Collaborate with cross-functional teams to design scalable and robust software architectures.

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.

About Enpal Enpal aims to build Europe’s largest renewable energy community by making solar energy accessible. Through a rental model for solar systems, electricity storage, and wall boxes, Enpal offers a bundled, all-inclusive solution. The company’s approach is digital, decentralized, and fully renewable, supporting rapid growth and direct action against climate change. Role Overview: Senior/Staff Software Security Engineer (F/M/X) This position is based in Berlin. The Senior/Staff Software Security Engineer will help protect Enpal’s applications throughout the Software Development Lifecycle (SDLC). Working closely with development, product, and DevOps teams, this role embeds security into every stage of software creation. Responsibilities include leading secure code reviews, running threat modeling sessions, and ensuring best security practices are followed. What You Will Do Build Secure Solutions: Deliver value in each development cycle, improving both customer experience and climate impact. Implement Shift-Left and Zero-Trust: Apply proactive security measures early and often, protecting applications, assets, and services from emerging threats. Develop Application Security Program: Collaborate with engineering and product teams to weave security into every phase of the SDLC, including design, development, testing, and deployment. Lead Threat Modeling and Risk Assessments: Organize threat modeling sessions, promote secure design, and carry out application-level risk assessments. Provide Security Training and Mentorship: Guide and train developers on secure coding practices, serving as a hands-on advisor. Why Join Enpal? Enpal offers a collaborative workplace focused on speed, agility, and growth. The company’s mission to make sustainable solar energy widely available depends on strong teamwork across software, product, and agile business units. This is a chance to advance your career while contributing to a sustainable future.

About Us Join our dynamic international team at Doctolib, based in Berlin, where we are devoted to enhancing the performance, features, and design of our essential healthcare product, the Scheduling System. Over the past decade, Doctolib has experienced remarkable growth by prioritizing pragmatic solutions and avoiding unnecessary optimizations. To sustain our momentum, we are focusing on performance as a key priority and are continuously evolving the architecture of our core features to accommodate future demands. We are currently re-engineering our Appointments Management Service from the ground up, utilizing modern event-driven, distributed technologies in line with our updated technology strategy. This pivotal service will revolutionize the way Care Teams manage appointments, ensuring patients receive quicker access to care.

Join Doctolib as a Senior Software Engineer specializing in JVM, Ruby, and React. In this pivotal role, you will design, develop, and optimize our software solutions to enhance healthcare accessibility across Europe. Collaborate with a talented team of engineers and play a key role in driving innovation in our technology stack.

Your ImpactJoin our dynamic DIAL team within the Phone Assistant domain as a Senior Software Engineer. Your mission is to transform patient access to care and optimize daily practice management for healthcare providers through our innovative Phone Assistant solution.You'll collaborate within a feature team to develop cutting-edge AI-driven voice services that enhance phone interactions for millions of users in Germany, France, and Italy.At Doctolib, being part of our tech team means you are building impactful products and features aimed at improving the everyday experiences of care teams and patients alike.

At Enpal, we are more than just a company; we are a movement committed to transforming the energy landscape. As a prominent greentech unicorn and one of Europe’s fastest-growing energy companies, we strive to make solar energy accessible and hassle-free for homeowners across the continent. Our revolutionary business model, encompassing solar panels, heat pumps, home energy storage systems, and EV charging stations, is reshaping the residential energy market. Our mission is to empower homeowners to adopt clean energy solutions, paving the way for a sustainable, decentralized energy future.As a frontrunner in the residential solar energy sector, Enpal is on a growth trajectory with a clear vision: to spearhead Europe’s transition to sustainable and decentralized energy generation.Job OverviewWithin our Energy Platform, we oversee the integration and digital operation of Enpal’s products installed in customer homes. From optimizing heat pumps and enhancing the functionality of wallboxes to facilitating energy trading on the market, our platform supports all Enpal energy products. Our work spans embedded engineering for our proprietary IoT hardware, managing cloud infrastructure for fleet operations, and crafting user experiences.As a Senior Software Engineer (f/m/x) on our team, you will delve into and directly engage with intelligent and renewable energy systems. Your responsibilities will encompass everything from hardware collaboration to data ingestion and control of IoT devices via the cloud, as well as designing user-friendly experiences.We pride ourselves on speed, agility, and significant career advancement opportunities. Our vision of making sustainable energy accessible to all is realized through a customer-centric approach and collaboration between software development, product management, and lean, experiment-driven business development.Join us in honing your professional skills, participating in the energy revolution, and collaboratively driving the sustainable change we wish to see in the world! We eagerly await your application.Your Role at EnpalSoftware Development. We are committed to delivering incremental value with each iteration and celebrate improvements in user experience that positively impact our climate goals.Enhancing Developer Satisfaction. We strive to eliminate late-night deployments and tedious manual regression tests by focusing on improving stability and automating processes, including load testing and vulnerability scanning.

At Enpal, we are more than just a company; we are a movement aiming to transform the energy landscape. As a distinguished greentech unicorn and one of the fastest-growing energy firms in Europe, we are committed to making solar energy accessible and effortless for homeowners across the continent. Our innovative approach to solar panels, heat pumps, home energy storage systems, and EV charging stations is revolutionizing the residential energy market. With our mission to empower homeowners to adopt clean energy, we are paving the way for a sustainable and decentralized energy future.As a frontrunner in the residential solar energy sector, Enpal is expanding rapidly with a clear vision: to lead Europe’s transition towards sustainable and decentralized energy generation.Job OverviewIn the Energy Platform, we manage the integration and digital operation of Enpal’s products installed in customer homes. Whether it’s controlling heat pumps, enhancing the functionality of wallboxes, or trading energy on your behalf, we provide the platform for all Enpal’s energy solutions. Our responsibilities span from the embedded engineering of our own IoT hardware to managing cloud infrastructure that processes and optimizes our fleet and crafting exceptional user experiences.As a Senior Software Engineer (f/m/x) on our team, you will play a crucial role in building and shaping a cutting-edge Data Platform at the heart of our entire solar system fleet, empowering our other teams to deliver exceptional customer experiences.We offer a dynamic work environment with speed, agility, and significant career growth potential. Our vision to make sustainable energy accessible to all can only be realized through a customer and product-centered approach, and close collaboration among software development, product management, and lean, experiment-driven business development.Join us in developing your professional skills, participating in the energy revolution, and taking ownership of the sustainable changes we wish to see in the world together! We eagerly await your application.Your Role at Enpal:Software Development. We are focused on delivering incremental value with each iteration, celebrating improvements that enhance user experiences while contributing to our climate goals.Enhancing Developer Experience. We strive to minimize late-night deployments and repetitive manual testing. Our goal is to improve stability and automate as much as possible, including load tests and vulnerability assessments.Professional Growth. We foster an environment that encourages continuous learning and development.

Be a Part of Our Vision at Doctolib!Your RoleWe are seeking a dedicated Senior Backend Software Engineer to join our newly established team focusing on user rights and permission management. In this pivotal role, you will set the benchmark for access control within the Doctolib platform, safeguarding sensitive user and financial data while facilitating efficient workflows for healthcare professionals.Your key responsibilities will include:Developing Advanced Authorization Systems: Create and deploy scalable authorization frameworks, incorporating role-based and API-driven controls that cater to both clinical and financial functionalities.Modernizing Legacy Systems: Streamline and enhance legacy access models (such as EHR authorizations) to ensure compliance with data protection and privacy regulations.Cross-functional Collaboration: Partner closely with product, legal, and data protection teams to deliver privacy-compliant solutions.API Development: Design and manage robust APIs for permissions and authorization, enabling extensive platform integration.Implementing Access Control: Establish access control measures for emerging roles, such as Medical Front Assistant and new Clinical & Financial administrative positions.About Our Technology LandscapeOur solutions are built on a fully cloud-native platform supporting web and mobile app interfaces, multilingual capabilities, and tailored to meet country and healthcare specialty requirements. We are modularizing our platform to operate within a distributed architecture through reusable components.Our technology stack includes Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native.We utilize AI ethically across our products to empower both patients and healthcare professionals. Discover our AI vision here and learn about our inaugural AI hackathon here!

About Plan APlan A, a subsidiary of Diginex Ltd, stands at the forefront of corporate carbon accounting and decarbonisation software in Europe. Our mission is to enable organizations to transform emissions intelligence into tangible financial outcomes. Through our AI-driven, TÜV-certified platform and dedicated expert support, we simplify emissions accounting, target setting, and reduction planning in compliance with GHG and SBTi standards. With a presence in Berlin, Paris, and London, we empower over 1,500 clients, including renowned brands like BMW, Visa, and KFC, to minimize costs, enhance efficiency, and cultivate sustainable long-term value via decarbonisation initiatives.We are on the lookout for a passionate, skilled, and collaborative Senior Frontend Engineer to enhance our Product Engineering team!

Join our dynamic team at redcare-pharmacy as an App CRM Manager (m/f/d) and play a pivotal role in enhancing our customer relationship management strategies. You will work closely with cross-functional teams to drive user engagement and optimize our app functionalities.In this position, you will be responsible for analyzing customer data, developing targeted campaigns, and implementing innovative solutions to maximize customer satisfaction and retention.

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!

Doctolib is hiring a Software Engineer with solid experience in Java and Kotlin. This position is based in Berlin and centers on building digital products that support both patients and healthcare professionals across Europe. Role overview This role involves working on software that aims to improve healthcare access and efficiency. The team values collaboration and a shared commitment to making a difference in the medical field. What you will do Collaborate with team members to design and implement new product features Develop and maintain applications using Java and Kotlin Help create solutions that make healthcare services easier to access and manage Location This role is based in Berlin, Germany.

redcare-pharmacy seeks a Junior App Marketing Manager to support its Berlin-based marketing team. This position focuses on growing app downloads and increasing user engagement through coordinated marketing efforts. Role overview The Junior App Marketing Manager works alongside experienced marketing colleagues to plan and execute campaigns for the company’s app. The role involves combining creative ideas with data-driven analysis to improve campaign results. Marketing initiatives also aim to enhance the overall app experience for users. What you will do Collaborate with the marketing team to design and run app-focused campaigns Apply creativity and analyze data to optimize campaign performance Support projects that improve the app user journey through marketing activities Requirements Keen interest in app marketing and digital growth Ability to think creatively and work with data Motivation to learn and contribute within a collaborative team This position offers the opportunity to develop marketing skills and make a meaningful contribution within redcare-pharmacy’s Berlin office.

**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.

scalablegmbh is looking for a (Senior) Rust Software Engineer to help build and maintain banking platforms in Berlin. This position centers on designing, implementing, and supporting high-performance applications written in Rust. Role overview This role focuses on developing software that supports banking operations. Collaboration with cross-functional teams is a key part of the work, aiming to improve user experiences and contribute to ongoing technical improvements. What you will do Design and implement applications using Rust Maintain and improve existing systems for performance and reliability Work closely with colleagues from other disciplines to deliver features and enhancements Requirements Experience developing with Rust Ability to design and maintain high-performance applications Strong collaboration skills for working with cross-functional teams