Senior Full Stack Developer (TypeScript) at cosuno | Berlin/Remote

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 ini…

Join our team as a Senior Full Stack Developer - Web (f/m/d) in Berlin! About Us At think-cell, we are on a mission to empower teams to effectively manage and publish content through our innovative web platform. As a Senior Full Stack Developer, you will play a vital role in shaping and expanding our web ecosystem. This position is ideal for a forward-thinking web engineer who thrives on tackling complex technical challenges, making informed architectural decisions, and building systems that are robust and maintainable as requirements evolve. You will engage with both frontend and backend technologies to enhance our web platform’s technical foundation, creating scalable solutions that facilitate seamless content management and publishing. You will collaborate closely with cross-functional stakeholders, including design, marketing, product, and engineering teams, while retaining strong ownership over technical quality and the platform's long-term vision. Our Core Values Forward Thinking: Embracing change and challenging the status quo. Ownership: Taking pride in our work and learning from our experiences. Customer First: Prioritizing the delivery of lasting value. Unified Team: Fostering collaboration, respect, and integrity. Strive for Excellence: Setting ambitious goals and pursuing quality. Your Responsibilities Design, develop, and enhance features of our web platform across both frontend and CMS backend. Address complex technical challenges pragmatically, balancing speed of delivery with long-term maintainability. Drive architectural enhancements to strengthen our web ecosystem's robustness, scalability, and usability. Develop and optimize backend functionality using PHP and Laravel for integrations and internal tooling. Refine our CMS and publishing workflows to support efficient content operations without compromising technical standards. Enhance performance, Core Web Vitals, accessibility, and technical SEO foundations across the platform.

About UsMelotech is at the forefront of transforming the media and entertainment landscape. We blend art and technology to craft experiences that resonate with humanity. In just two years, our creations have captivated audiences globally, amassing over 3 billion minutes of engagement.Founded by visionary entrepreneur Soheil Mirpour, we are proudly supported by renowned venture capitalists such as Cherry Ventures, Speedinvest, and GFC, along with esteemed angel investors from industry giants like Spotify, Blackstone, and KKR.Your RoleAs one of our pioneering developers, you will connect beautifully designed front-end interfaces with robust back-end systems. You will confront critical challenges: How can we construct scalable systems without sacrificing simplicity? What is the most efficient path to deploy essential functionalities? How can we integrate AI seamlessly into our processes? Working autonomously alongside our founder and the team, your innovative solutions will play a key role in our success. Your daily responsibilities may include:Taking ownership of features across the full stack, crafting clean code for both front-end and back-end systems.Collaborating with commercial teams to design and implement platform enhancements.Utilizing AI coding assistants and cutting-edge development tools to streamline workflows and uphold code quality.Developing strong APIs and integrating AI models into production environments.Creating comprehensive solutions that unify individual data flows into cohesive models across various domains.Contributing creative ideas and making decisive choices that shape our technological framework.Your ProfileWe seek innovative, driven, and talented full-stack engineers who can propel our business forward through technical ingenuity. You are not just a coder; you turn concepts into intuitive and powerful software, utilizing AI-enhanced workflows to deliver production-ready MVPs rapidly. Your qualifications typically include:Currently pursuing a degree in Computer Science or a related field, with relevant full-stack development experience.Proficiency in core programming languages and hands-on experience with modern web frameworks, preferably Node.js/Next.js, and databases.Expertise in AI coding tools and development agents integrated into your everyday workflow.Experience in building and deploying production-ready full-stack applications.Strong teamwork and communication skills to collaborate effectively with cross-functional teams.

Your MissionAs a Principal Full Stack Developer at cosuno, you will take on the pivotal role of a technical leader, influencing the evolution of our platform while mentoring fellow engineers. You will tackle complex technical challenges, ensuring our systems are scalable, reliable, and future-proof.Your responsibilities will include:Driving the technical vision and architecture of our core product, collaborating closely with our Machine Learning team to seamlessly integrate innovative AI features.Leading the design and implementation of extensive technical projects, such as advancing our monorepo strategy and migrating critical services to new architectures.Mentoring senior engineers to enhance their skills through code reviews, architectural guidance, and the establishment of best practices.Collaborating with product and engineering leadership to identify and mitigate technical risks in the product roadmap for the upcoming 1-2 years.Our Engineering CultureAt cosuno, we foster a calm, collaborative, and productive engineering environment. We empower our engineers with the autonomy to excel. Our approach includes:Agile & Fast-Paced: We engage in trunk-based development with daily releases to deliver value to our users promptly.Quality by Default: We uphold a rigorous Cypress E2E test suite and enforce stringent typing, linting, and formatting rules to maintain a clean and maintainable codebase.DevOps Mindset: Our CI/CD pipeline, which deploys to AWS via Kubernetes, is managed as code using Terraform.Collaboration & Transparency: We value open discussions, constructive code reviews, and a culture where the best idea prevails, regardless of its source.

Join our innovative team at dampsoftberlin, where we are seeking a dynamic Full-Stack Developer (m/w/d) to contribute to our exciting projects. As a key player in our development team, you will work on both front-end and back-end technologies, crafting seamless user experiences and robust server-side applications.If you are passionate about coding and eager to learn, we encourage you to apply!

Bei proalphagroup sind wir PRO YOU – denn der Mensch steht bei uns im Mittelpunkt. Wir setzen auf Verantwortung, fördern kontinuierliche Entwicklung und bieten ein unterstützendes Arbeitsumfeld, das sowohl berufliches als auch persönliches Wachstum ermöglicht – auch durch flexible Arbeitszeitmodelle.Empolis - Intelligenz für bessere EntscheidungenEmpolis ist ein führender Anbieter von cloudbasierter Software im Bereich der intelligenten Entscheidungsunterstützung, basierend auf Künstlicher Intelligenz. Als Teil der Proalpha Group agieren wir an 66 Standorten weltweit als digitaler Partner für den Mittelstand. Unser Ziel ist es, Knowledge- und Content Management intelligent zu verknüpfen, um durch unsere standardisierten SaaS-Produkte das Motto „DECIDE. RIGHT. NOW.“ zu realisieren. Täglich nutzen rund 700.000 professionelle Nutzer unsere Lösungen, um über 40 Millionen Endkunden zu bedienen. Wir sind zudem Gesellschafter des Deutschen Forschungszentrums für Künstliche Intelligenz (DFKI) und im Vorstand der Science und Innovation Alliance Kaiserslautern (SIAK) vertreten.Du arbeitest in Vollzeit in Berlin.

Join our dynamic team at dreessommerse as a (Senior) Full-Stack Developer focusing on cutting-edge web technologies. You will work collaboratively to design and implement innovative solutions, enhancing user experience and optimizing performance across various platforms.

KAYAK, part of Booking Holdings (NASDAQ: BKNG), runs a large-scale travel search platform used by travelers worldwide to find flights, hotels, rental cars, and vacation packages. The company also offers KAYAK for Business, which provides travel management solutions to organizations. Its network includes well-known brands like momondo, Cheapflights, and HotelsCombined. KAYAK aims to make exploring the world easier by building the best travel search engine and values innovation and real impact from its employees. Role overview As a Senior Java Software Engineer based in the Berlin office, you will play a key role in developing and refining the features behind KAYAK’s search and booking systems. The team collaborates with over 200 travel partners, giving users access to more than 500,000 hotels and 550 airlines. Your work will help ensure smooth, reliable experiences for millions of users each day. This position requires onsite presence in Berlin at least three days per week. What you will do Enhance search and booking algorithms to meet the needs of major corporate clients worldwide. Develop and maintain high-performance integrations with third-party APIs, including those for airlines, hotels, and rental car providers. Take ownership of your designs from concept through deployment, with a focus on code quality and system performance. Join code reviews and architectural discussions to keep the K4B project modular and reusable as KAYAK continues to grow. Requirements Bachelor’s degree in Computer Science or a related field. At least 4 years of professional experience working with Java. Strong knowledge of the Spring ecosystem (Spring/Spring Boot) and hands-on experience with both relational (SQL) and NoSQL databases such as PostgreSQL, MySQL, or Redis. Clear and effective communication skills in English. Ability to independently design and deliver engineering projects.

Join our innovative team at redcare-pharmacy as a Senior Java Engineer. In this pivotal role, you will leverage your expertise in Java programming to develop robust, scalable applications that enhance our digital pharmacy solutions. Collaborate with cross-functional teams to drive the design and implementation of high-quality software solutions.We are looking for a proactive and detail-oriented engineer who thrives in a dynamic environment and is passionate about problem-solving. If you are ready to make a significant impact in the healthcare technology space, we want to hear from you!

As a Team Lead Java Engineer in our Remarketing department, you will spearhead architecture, solution design, development, quality assurance, deployment, monitoring, and maintenance within our service-oriented platform. This platform currently features over 300 RESTful microservices. You and your team will take ownership of a selection of applications and services.Leverage your hands-on experience and proactive attitude to tackle complex challenges effectively, providing innovative solutions and technical guidance grounded in your robust technical expertise.Take charge of the professional growth and development of your team, fostering an environment where everyone strives to improve daily.Recruit top-tier talent, exemplify leadership, and mentor your team members to push boundaries and achieve excellence.

Join us at Delivery Hero as an Engineering Manager specializing in Java/Kotlin for our Logistics Workforce Tribe. We are dedicated to delivering exceptional experiences and are looking for a leader to help us achieve this goal.As part of our Logistics Team, you will address significant challenges to enhance last-mile delivery, making it more efficient, affordable, and sustainable. Your contributions will directly enhance the experiences of riders, end customers, and merchants worldwide. Each improvement you implement will assist Delivery Hero in optimizing our delivery operations, facilitating our expansion into new sectors such as grocery and retail.The Workforce Tribe Team:Riders serve as the backbone of our last-mile delivery, enabling the fulfillment of millions of orders daily.Our Workforce Tribe is responsible for managing gross and net earnings, a wallet for riders to withdraw their earnings, staffing and work scheduling, performance management, loyalty programs, personalized campaigns and goals, recruitment of new riders, and document management for our million-strong rider community.The rider experience with Delivery Hero is our core metric, and you will be at the helm of one of the squads that directly influences this metric.Your Role:Collaborate with your product counterpart to provide technical guidance to your team, facilitating the design of feasible and iterative solutions that align with our business needs.Take ownership of the technical metrics and KPIs for your team, ensuring complete visibility, monitoring, and alerting.Enhance and support the incident resolution process and the team's on-call practices.Mentor junior team members, providing both technical and non-technical guidance.Manage relationships with both technical and non-technical stakeholders, effectively navigating and resolving challenges.

Join Our Innovative Team at 1GLOBALAt 1GLOBAL, we are redefining mobile connectivity on a global scale. As a leading technology-driven mobile communications provider, we deliver seamless connectivity solutions for both enterprises and consumers. Our advanced telecom platform, featuring our proprietary global mobile core network and in-house developed eSIM technology, empowers us to operate as a fully regulated telecommunications provider across 40 countries worldwide.We partner with some of the world’s premier banks, enterprises, and digital-first businesses, including neo-banks and global consumer goods companies. With over 70 million connections, we enable our clients to innovate and scale their operations confidently within the mobile ecosystem.As a profitable and rapidly growing business, we project revenues exceeding US$200 million in 2025, with profits surpassing US$25 million. Our strong cash flow allows us to invest continuously in our infrastructure, platform innovations, and global expansion initiatives. Our recent successes have marked a pivotal phase in our journey, with significant client acquisitions propelling us into a global mobile connectivity powerhouse.Founded in 2022 by seasoned tech entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL is quickly emerging as a European technology leader, committed to shaping the future of global telecommunications. As a fully regulated Mobile Virtual Network Operator (MVNO) in 12 countries and a regulated telecom operator in another 28, we are headquartered in the Netherlands with R&D hubs in Lisbon, Berlin, and São Paulo. Our dedicated team of nearly 500 experts across 15 countries is driven by a singular ambition: to enhance global mobile connectivity through innovative technology and operational excellence.About the RoleDesign and develop impactful features while contributing to the architectural framework with a focus on resilience, scalability, security, and fault tolerance.Champion high code quality and best practices to maintain robust software development.Work collaboratively in an agile team environment to ensure timely product delivery and management.

Join our dynamic team at Scalable Capital, where our mission is to empower application teams to concentrate on their core business logic rather than the complexities of framework configurations and integrations.From the very beginning, Scalable Capital has been cloud-native, leveraging a variety of AWS services such as ECS, Fargate, and Lambda, all while maintaining a strong DevOps culture. Our development teams independently manage their CI/CD pipelines and cloud infrastructure, ensuring agility and efficiency.The Application Framework Team is dedicated to delivering and maintaining ready-to-use, secure, and high-quality application templates and reference implementations. We focus on best practices and integrations with the most widely used frameworks and architectural components in our ecosystem.Architect and define the future of microservices at Scalable, emphasizing performance, security, and cost-efficiency.Collaborate with cross-functional teams to gather and analyze application requirements for our platform.Lead the design and implementation of 'Service in a day' application templates (Spring Boot, Node.js, Python Lambdas), setting new standards for speed and integration across the organization.Champion the use and adoption of AI coding tools to enhance developer workflows.Oversee critical technology migrations (e.g., Spring Boot upgrades), centralizing best practices and supporting over 40 application teams.Assume full ownership of core architectural components and central integration libraries utilized across all application teams.Research and enhance service and storage capabilities through serverless technologies, optimizing our services and CI/CD processes for scalability, cost, and performance.Act as the primary expert for vulnerability analysis in key frameworks (e.g., Spring Boot, Node.js/Next.js, Python Lambdas, Apollo, Express), identifying false positives and developing reusable security solutions for our extensive application landscape.Mentor and empower our software development teams, fostering our DevOps culture by providing educational resources and reusable building blocks that enhance standardization, performance, and security.Stay abreast of the latest industry trends, tools, and methodologies related to application frameworks and best practices.Design and implement best practices around application performance and security.Take charge of central services such as GraphQL Hive and gateway, Envoy, and AWS services including ECS, Elasticache, and Opensearch, as well as messaging solutions like SNS, SQS, and Kafka.

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

Join Atolls, the world's largest community-driven shopping platform, active in over 20 markets.We empower millions to make informed spending choices across the discovery, evaluation, and (re-)purchase phases by connecting consumers with the right brands and retailers.Our diverse team of over 1,000 individuals across 10 countries develops products that millions use daily at a global scale. Here, you'll have true ownership of your work and witness its direct impact. Are you ready to help shape the shopping experiences that people trust? Keep reading.About This Opportunity:We are on the lookout for a Senior Software Engineer (Java/SpringBoot) to enhance our Shopping team based in Berlin. In this pivotal role at Atolls, you will play a critical part in enabling our consumers to maximize their value for money by delivering an outstanding shopping rewards experience online and in-store. You'll be instrumental in crafting exceptional user experiences, empowering consumers to make informed and confident shopping decisions. Your contributions will directly influence how millions of users engage with our platforms, guiding them towards making smart, fair, and rewarding choices.Our Perks:At Atolls, we are committed to fostering your professional and personal development. Here’s what we offer:A culture that champions personal and professional growth, coupled with internal mobility opportunities.A supportive and inclusive team that values diverse perspectives and innovative ideas.32 days of paid vacation plus your birthday off for optimal work-life balance.A flexible hybrid working model to accommodate your lifestyle.Access to a dedicated learning budget and internal training.Mental health coaching to support your well-being.Regular global and local events to celebrate achievements and foster connections.Opportunity for a sabbatical after three years with the company.

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.

About KAYAKKAYAK, a member of Booking Holdings (NASDAQ: BKNG), stands as a premier travel search engine. With billions of queries on our platforms, we assist travelers in discovering their ideal flights, accommodations, rental cars, and vacation packages. We are also revolutionizing business travel with our innovative corporate travel solution, KAYAK for Business.As part of KAYAK, you will join a travel company that oversees a diverse array of global metasearch brands, including momondo, Cheapflights, and HotelsCombined. From our startup journey to becoming an industry trailblazer, innovation drives us, and every team member has the chance to leave a lasting impact. Our commitment is to develop the most efficient travel search engine, simplifying the process for everyone to explore the world.Position OverviewWe are in search of a proficient mid-level Java backend developer dedicated to implementing new features and maintaining KAYAK’s cutting-edge search and booking technology. Collaborating with over 200 travel partners and connecting to more than 500,000 hotels and 550 airlines, you will play a pivotal role in a dynamic team that ensures seamless operations, aiding millions in finding optimal accommodations and travel routes every day!This is a Fixed Term contract until September 30, 2027.This role requires working from our Berlin office a minimum of three days per week.Key ResponsibilitiesEnhance search and booking algorithms to meet the needs of our largest global corporate clients.Develop and sustain high-performance integrations with third-party APIs (airlines, hotels, and rental car providers).Take full ownership of your designs, from concept to deployment, while upholding exceptional standards for code quality and performance.Engage in code reviews and architectural direction to ensure the K4B project remains modular and reusable as KAYAK expands its enterprise reach.QualificationsBachelor’s degree or higher in Computer Science or a related field.5+ years of experience in Java programming.Hands-on experience with the Spring ecosystem (Spring/Spring Boot) and familiarity with relational (SQL) and NoSQL databases (e.g., PostgreSQL, MySQL, Redis).Excellent English communication skills.Ability to design and implement engineering initiatives with a focus on performance and usability.

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 our Clickout-to-Revenue Team, where you'll be integral to our core business model: merchants pay for qualified redirects ("Clickouts") to their shops. Your role will ensure that this monetization operates smoothly, efficiently, and transparently, significantly contributing to idealos' growth.Your ResponsibilitiesEnd-to-End Responsibility You will develop and manage business and web applications in the AWS Cloud. Together with your team, you will oversee the entire value chain (YBYO): architecture, infrastructure, development, testing, security, deployment, monitoring, on-call duties, and maintenance. Product Focus: Monetization Processes and Services You will develop services for the representation and billing of our business models. Key components include the ERP system Odoo, internal data management tools, and interfaces to Salesforce and SAP. Innovative business models require innovative solutions; hence, you will closely collaborate with stakeholders such as our accounting, sales teams, account management, and other cross-functional engineering teams. Technical Excellence You will actively contribute ideas for process improvements, emphasize high code quality, and engage in continuous personal development – we support you with various training opportunities.

Join our innovative team at scalablegmbh as a Senior Kotlin/Java Software Engineer in Client Technology. We are looking for a passionate engineer who thrives on building scalable, high-performance applications that make a difference.In this role, you will collaborate with cross-functional teams to design, develop, and optimize our client-facing technologies. Your expertise in Kotlin and Java will help us maintain our commitment to high-quality software development.