(Senior) Full-Stack Developer (w/m/d) Web Technologies

We are seeking a passionate Full Stack Developer to join our dynamic team at bitlane in Berlin. In this role, you will engage in the complete product development lifecycle, from brainstorming innovative ideas to deploying and maintaining our applications. The ideal candidate will possess a solid foundation in software engineering principles and best practices, coupled with a creative mindset to solve complex problems and develop new services. Your responsibilities will include both back-end and front-end development across various projects, collaborating with our international team to enhance different layers of our applications. Projects may range from simple applications to comprehensive e-commerce systems and sophisticated CRM platforms. If this resonates with your skills and aspirations, we invite you to apply!Responsibilities:Work closely with our software team to conceptualize and implement new features.Enhance our product and codebase using your analytical expertise.Expand and innovate our existing web technology offerings.Develop and maintain tools for software and data interaction.Champion test-driven development practices, including code reviews, unit testing, and documentation.Collaborate with project managers to define project scopes.Effectively communicate your progress and adhere to deadlines established with project managers.

Join our dynamic and innovative team at bitlane as a Senior Backend Developer. We are seeking a passionate software engineer to contribute to our product development journey from conception to deployment and beyond. In this role, you will collaborate closely with project managers and frontend developers to ensure that we meet and exceed our project requirements. The ideal candidate will possess a deep understanding of software engineering principles and industry best practices, delivering clean, maintainable, and error-free code with robust test coverage. You will be responsible for writing automated tests, conducting code reviews, and taking end-to-end ownership of your projects. We value problem solvers with an inquisitive and innovative mindset, ready to leverage their software development skills to create new services. Your role will involve backend development across a variety of projects, ranging from small applications and single-page websites to comprehensive e-commerce systems and complex CRM solutions. If this resonates with your skill set, we look forward to receiving your application!Responsibilities:Collaborate with our software team to design and launch new featuresEnhance our product and codebase with your analytical insightsMaintain our systems at the cutting edge while developing our growing environmentExpand our existing web technology portfolioCreate new microservices using AWS and improve existing onesDevelop and maintain tools for software and data interactionDefine project scope in collaboration with project managersCommunicate your work status and meet deadlines established with project managers

bitlane is actively seeking a talented Senior Frontend Developer specialized in React to join our vibrant team. The ideal candidate will possess substantial and hands-on experience in JavaScript, have a solid understanding of TypeScript or ES6, and demonstrate proficiency with the React/Redux ecosystem. We value individuals who are passionate about crafting lean and user-friendly interfaces, ensuring an exceptional user experience. If you resonate with this, we encourage you to apply!Key Responsibilities:Designing and developing responsive, modern user interfaces utilizing JavaScript, HTML, and CSS.Delivering high-quality applications by designing and implementing new features into production.Establishing development, testing, and production environments across various platforms, browsers, and devices.Collaborating closely with backend developers to guarantee a seamless user experience and a robust overall architecture.Defining project scope in conjunction with a project manager.Communicating your work progress effectively and adhering to deadlines set by yourself and the project manager.

Join our innovative and dynamic team at bitlane as a Senior Project Manager. We are seeking a skilled and tech-savvy project manager who is passionate about leading diverse software projects. In this role, you will oversee a variety of initiatives, ranging from mobile applications and single-page websites to complex e-commerce platforms and comprehensive CRM systems. As the primary point of contact for clients, you will collaborate closely with stakeholders to establish technical scopes, identify dependencies, and navigate project challenges to drive success efficiently. If you feel that you align with the qualifications outlined here, we look forward to your application!Key Responsibilities:Collaborate with clients and IT teams to grasp overarching strategies and specific use cases.Ensure transparency regarding project goals, progress, and outcomes among all stakeholders.Gather and prioritize project stories based on effort and business impact.Act as the main contact for projects, managing them from inception to completion.Facilitate discussions and the development of new concepts in partnership with our design and software teams.Create a project roadmap in collaboration with clients and your team.Guarantee timely project completion within budgetary constraints.

Join us as a Founding Full-Stack Developer at jobsforhumanity, where you'll have the unique opportunity to shape our technology and make a meaningful impact on the lives of people around the globe. In this pivotal role, you'll be responsible for developing innovative solutions that bridge the gap between technology and humanity.

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.

KAYAK is part of Booking Holdings (NASDAQ: BKNG) and operates as a leading travel search engine. The company processes billions of queries across its platforms, helping travelers find flights, hotels, rental cars, and vacation packages. KAYAK also develops solutions for business travel, including KAYAK for Business. The Berlin office is home to a growing team that works on a portfolio of well-known metasearch brands such as momondo, Cheapflights, and HotelsCombined. Innovation remains central to KAYAK’s approach, and each team member has the opportunity to contribute to the company’s mission: building the best travel search engine for effortless global exploration. This Full Stack Engineer role focuses on developing and improving KAYAK’s B2B platform. The platform serves established clients and is positioned for further growth. The position is based in Berlin and requires in-office presence at least three days per week. What you will do Work closely with a global team to develop B2B products. Partner with designers, product managers, and commercial teams to define and deliver new features. Design and build scalable, high-performance solutions. Contribute to architecture decisions that improve performance, quality, and code reusability. Troubleshoot and resolve recurring technical issues. Use AI coding tools to increase productivity. Requirements Degree in Computer Science or a related field. At least 5 years of professional experience in web development. Strong skills with TypeScript, React, and CSS (Sass or Less) for front end work. Experience with Java, Java Spring, JVM ecosystems, and familiarity with databases such as PostgreSQL, MySQL, or Redis. Comfort with writing unit and end-to-end tests. Proven debugging ability in a full-stack environment. Benefits Health Insurance 401k

At TechBiz Global, we pride ourselves on being more than just a recruitment and software development agency; we are a dedicated German-based global partner focused on driving your business success. Our diverse and distributed team specializes in IT recruitment, outstaffing, outsourcing, software development, and consulting services, catering to over 100 clients across more than 20 countries. We are currently in search of a Senior Full Stack Developer to join one of our esteemed client's teams. If you are looking for an exhilarating opportunity to advance your career in an innovative environment, this role may be the perfect match for you.

Join Tilla, an innovative SaaS start-up, as we revolutionize crew logistics at the intersection of global shipping and travel. Our dynamic international team is dedicated to transforming how seafarers reach their vessels, ensuring that every crew change is optimized and digital.With over 10,000 crew changes facilitated annually across 600+ vessels, we are backed by strong investors and are committed to enhancing operational efficiency, reliability, and the overall experience for seafarers and operators alike. At Tilla, we believe in making crew operations not just more efficient, but also more humane.Your MissionAs a Full Stack Engineer, you will play a pivotal role in driving product initiatives. This position offers the chance to influence technical decisions and grow into a backend lead role as our company scales. You will thrive in our data-driven, performance-critical environment, where accuracy, reliability, and usability are paramount.Our Tech StackFrontend: React, Next.js, TypeScript, ShadCNBackend: NestJS, GraphQL, Prisma, AWS (Lambda, SQS, RDS, ECS)State Management: Apollo Client, React QueryTesting: Jest, PlaywrightOwn & Ship Features End-to-End: Lead product initiatives from conception through implementation, testing, and deployment.Integrations & APIs: Design and maintain integrations with third-party systems, ensuring secure and scalable data flows while contributing to areas with direct revenue impact.

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.

Join Mirelo AI, a pioneering force in creative technology that transforms video content through realistic sound, speech, and music generation.We are at the forefront of generative AI, crafting innovative foundational models that 'unmute' silent videos, delivering custom, hyper-realistic audio tailored for gaming, video platforms, and content creators. Our groundbreaking technology empowers storytellers worldwide to elevate their narratives.Having successfully secured a $41 million Seed round co-led by Andreessen Horowitz and Index Ventures, with contributions from Atlantic, we're experiencing rapid growth across our Product, Engineering, Go-to-Market, and Growth teams.About the RoleAs a Full-Stack Software Engineer at Mirelo, you'll be an integral part of our dynamic, fast-paced team, developing tangible products based on our advanced generative audio models. This position emphasizes hands-on involvement and significant ownership: you'll be responsible for delivering end-to-end features throughout our tech stack, collaborating directly with research and product teams, and influencing the practical application of our technology for users and partners alike. As we enhance our go-to-market strategies, your engineering contributions will play a vital role in both user-facing products and intricate integrations with various platforms, tools, and enterprise collaborators.Key ResponsibilitiesDesigning and maintaining our innovative products leveraging cutting-edge generative AI models for audio and music.Take full ownership of delivering end-to-end features across both front-end and back-end systems, while also guiding the trajectory of the features and products you develop.Engage closely with our research and sales teams; stay attuned to user needs, identify practical opportunities, and convert them into actionable engineering tasks.Utilize our existing tech stack effectively: TypeScript, React, Tailwind, shadcn, and Convex for backend development.Implement essential cloud services—primarily AWS Lambda and S3—for seamless integrations, automation, and deployment workflows.Leverage modern AI-assisted development tools (e.g., Cursor, Claude Code) to expedite processes while maintaining high-quality craftsmanship.Foster clear communication with team members, actively participate in discussions, and collaboratively drive the technical direction.Ideal Candidate ProfileA minimum of 5 years of professional web development experience, ideally in dynamic product or startup environments.Proven expertise in front-end frameworks such as React and back-end technologies.Strong understanding of cloud services, particularly AWS.Excellent problem-solving skills and a collaborative mindset.A passion for technology and a desire to contribute to transformative projects.

Join Us as a Full Stack Product Engineer at Kombo Berlin (On-site) · Full-timeHello! I’m Aike, co-founder and CTO at Kombo. We are seeking innovative product engineers who are eager to take ownership of customer challenges within our product ecosystem. At Kombo, you will engage directly with customers, conceptualize solutions, develop them, deploy them, and ensure they function seamlessly.This is a Berlin-based on-site role.What We're CreatingAt Kombo, we're constructing the foundational infrastructure on which HR tech products are developed. With a team of engineers at the helm, we thrive on tackling complex technical challenges. This journey has led us to create robust infrastructure solutions for HR tech providers.Specifically, we have developed a unified API, an extensive data synchronization engine, an observability platform, and an integrated setup/configuration UI. Our offerings empower software companies to provide pre-built integrations with HR, ATS, LMS, and Payroll systems, relieving them from the burden of building and maintaining numerous integrations on their own. Discover more about our product here: What is the Kombo product?We achieved product-market fit approximately 1.5 years ago, and since then, we've experienced remarkable growth, with our revenue nearing 10M annually and powering integrations for over 15,000 companies, synchronizing data for more than 250 million individuals globally. We are setting the benchmark for how companies can build products atop complex enterprise systems. Our impressive growth rate places us in the top 5% of VC-funded startups worldwide, and we are excited to announce the successful closing of our $25M Series A funding round! About the Role and Our Work CultureIn our early days, my co-founders and I collaborated closely with customers, handled support ourselves, learned about their issues, and designed features based on their feedback. This approach was not only enjoyable but also more effective than the traditional model of engineers working through specified tickets without customer interaction. When we began hiring engineers, we committed to providing this same engaging work style. We don’t believe in having “code monkeys” at Kombo; that's how we defined our concept of

About UsAt Melotech, we are at the forefront of transforming the media and entertainment landscape. Our innovative approach marries art with cutting-edge technology, captivating audiences globally with over 3 billion minutes of content consumed in just two years. Founded by visionary entrepreneur Soheil Mirpour, we are proudly supported by esteemed venture capital firms such as Cherry Ventures, Speedinvest, and GFC, alongside influential investors from Spotify, Blackstone, and KKR.Your RoleAs one of the pioneering developers in our team, you will play a crucial role in integrating beautifully crafted frontends with robust backends. You will address pivotal challenges, including how to develop scalable systems that remain straightforward, the quickest methods to deploy functional solutions, and the incorporation of AI across our processes. Collaborating closely with our founder and team, your innovative solutions will have a direct impact on our success. Typical responsibilities include:Taking ownership of features throughout our tech stack, crafting clean code for both frontend and backend systems.Collaborating with commercial teams to design and execute platform improvements.Utilizing AI coding assistants and contemporary development tools to enhance workflows and uphold code quality.Creating robust APIs and seamlessly integrating AI models into our production systems.Designing comprehensive solutions that unify individual data flows across various sectors.Generating creative ideas and making decisive choices that will shape our technology platform.About YouWe seek imaginative, driven, and proficient full-stack engineers who can propel our business through technical innovation. You are not just a coder; you transform concepts into intuitive yet powerful software, employing AI-enhanced workflows to deliver production-ready MVPs rapidly. Typically, you will possess:A degree in Computer Science or a related field, along with 2 or more years of full-time 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 utilizing AI coding tools and development agents as part of your regular workflow.Experience in building and launching production-ready full-stack applications.Strong collaboration and communication skills to work effectively within a team.

Join Entyre, a dynamic health tech scale-up that is reshaping the healthcare landscape in Switzerland and the United States. With over 500 employees across global offices in Zurich, Berlin, Boston, Chicago, Detroit, Washington, and Denver, we are on an exciting growth trajectory.Our Berlin tech hub is seeking a Senior Full-Stack Engineer who is passionate about crafting and scaling our core platform. This role offers an opportunity to take ownership of our software solutions, emphasizing workflow automation and data analytics. You will be part of a dedicated team in Berlin, responsible for enhancing our two primary software products while continuously delivering high-quality features. Our technology stack includes Node.js, TypeScript, and Vue.js.Your Responsibilities:Software Development: Design and implement high-quality applications and software solutions.Technical Proficiency: Use your expertise to tackle our technical challenges effectively.Team Collaboration: Work closely with cross-functional teams including Product, Operations, and Patient Care Teams.Project Management: Manage technical projects from inception to deployment, ensuring a smooth development cycle.What We Provide:Significant role in a compact, skilled software team.Modern office environment in vibrant Kreuzberg, with flexibility for up to 3 days of remote work each week.Monthly mobility allowance for public transport, biking, or shared mobility options.Attractive employee discounts.Strong team culture with regular events, refreshments, and snacks in the office.

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!

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.

Superhuman embraces a vibrant hybrid working model for this position. This adaptable approach allows team members to enjoy focused work time while also engaging in face-to-face collaboration that cultivates trust, creativity, and a robust team culture.About SuperhumanSuperhuman is an AI productivity platform on a mission to unlock the superhuman potential in everyone. As part of Grammarly, our suite of applications seamlessly integrates AI into daily workflows, working alongside over 1 million applications and websites. Our offerings include Grammarly’s writing assistance, Coda’s collaborative workspaces, Mail’s inbox management, and Go, our proactive AI assistant that anticipates users' needs. Founded in 2009, Superhuman serves over 40 million individuals, 50,000 organizations, and 3,000 educational institutions globally, enabling them to eliminate busywork and concentrate on what truly matters. Discover more at superhuman.com.The OpportunityTo propel our ambitious objectives, we are seeking Full-Stack Software Engineers to join our engineering teams. As a Full-Stack Engineer at Superhuman, you will be pivotal in developing essential components of our product offerings, infrastructure, and features that assist 40 million users in writing clearly and effectively each day. You will work on both Front-End and Back-End, contributing to significant, high-impact projects.Our engineers and researchers are encouraged to innovate and discover breakthroughs that can shape our product roadmap. As we scale our interfaces, algorithms, and infrastructure, the complexity of our technical challenges is expanding rapidly. You can learn more about our team's insights on our technical blog.Superhuman is experiencing rapid growth. There are ample opportunities to join a team, learn from seasoned professionals, and build product offerings and teams from the ground up. Within our expanding engineering organization, you will find numerous opportunities for ownership and making a direct impact on users.As a Full-Stack Engineer, you will:Begin building and deploying code in your first week and launch impactful features in your initial months.Create and maintain production services with high call rates on the Back-End while developing engaging user interfaces on the Front-End.Aim for high availability for both consumer and enterprise customers.Collaborate extensively with internal teams such as Core, Growth, and Enterprise.

Join Almedia, a pioneering company on a mission to redefine marketing in the digital age. With aspirations to become Germany's next bootstrapped unicorn, we are already recognized as Europe's #3 fastest-growing company by the FT1000 in 2025.At Almedia, we empower our community of over 60 million users by rewarding them for engaging with our partners' products, creating an innovative user acquisition strategy for some of the world's largest brands.About the RoleAs an AI Full Stack Engineer, you will develop and enhance internal tools and applications, seamlessly integrating AI functionalities into our existing systems. You will work across the technology stack, connecting to AI APIs, while collaborating with various business teams to optimize their workflows.Your ResponsibilitiesDesign, develop, and maintain full stack applications, covering front end, back end, and databases.Create and support back-end services utilizing Node.js.Integrate and manage AI APIs within new and existing systems.Leverage prompting techniques and cutting-edge AI tools to craft impactful AI-driven features.Navigate through multiple systems and data sources to consolidate fragmented information.Collaborate with teams across marketing, user acquisition, and operations to:Gain insights into their tools and workflows.Identify opportunities for AI to enhance their processes.Translate business needs into technical solutions and iterate on them.Essential QualificationsProven experience with Node.js in a production environment.Demonstrated ability to integrate and utilize AI APIs.Strong programming skills with a solid foundation in engineering principles.Comprehensive full stack knowledge: front end, back end, and databases.Proficient prompting techniques and adept at employing current AI tools.Exceptional communication skills, particularly with non-technical stakeholders.A curious mindset with a strong willingness to learn, especially about AI technologies.Preferred QualificationsFamiliarity with TypeScript.