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Full Stack Engineer Java Kotlin Payments Team jobs in Berlin· Page 3

Results 41–60 of 1,251 for “Full Stack Engineer Java Kotlin Payments Team” in Berlin.

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Orcrist Technologies logo
Full-time|Remote|Remote / Berlin

Full-Stack Engineer (TypeScript)About Orcrist TechnologiesAt Orcrist, we are revolutionizing data intelligence with our Orcrist Intelligence Platform (OIP). This cutting-edge, Kubernetes-based system provides a powerful SaaS or self-hosted/on-premise solution, capable of handling air-gapped deployments. Our mission is to transform complex, multi-modal data i…

Jan 5, 2026
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smava GmbH logo
Full-time|On-site|Berlin

Join smava, the leading online credit comparison platform in Germany, where we strive to make loans transparent, fair, and affordable! With over 300,000 satisfied customers, we are shaping the digital future of the consumer loan market. Become a part of our innovative team!Our development teams are organized around the customer journey, taking complete ownership of their respective platform segments and services. Working autonomously, we empower teams to make decisions within our exciting roadmap, fostering a responsible and collaborative environment.YOUR NEW TEAMWe are on the lookout for a Senior Full Stack Engineer to enhance our Customer Communication team. Our mission is to streamline the loan application process by creating an innovative omni-channel communication landscape. By developing services that ensure timely and meaningful interactions with our customers—via email, SMS, RCS, WhatsApp, and our automated dialer for calls—we aim to elevate the customer experience. Our team continuously optimizes the customer journey through data-driven experiments.WHAT YOU WILL BE DOINGDevelop and maintain data-intensive Node.js and TypeScript services operating on AWS Lambda and Kubernetes.Ensure the reliability and stability of customer communication services through effective traffic management.Design and implement new features while enhancing existing systems to optimize performance and efficiency.Contribute innovative ideas to integrate artificial intelligence into our processes.Engage actively in team decision-making regarding goals, timelines, and tech stack.Work closely with our Product Owner to continuously evolve features within our domain.Own the development and operations processes, adhering to our

Mar 23, 2026
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Affinidi logo
Full-time|On-site|Berlin, Germany

About the CompanyAffinidi is a pioneering technology firm dedicated to revolutionizing data ownership. We empower both businesses and individuals to take control of their data with a holistic approach to identity management, ensuring security and privacy while accounting for every aspect of their digital presence.Our innovative solutions facilitate decentralized digital identities, championing the belief that everyone should have the right to manage and control their data. We are committed to establishing a trusted ecosystem of digital credentials that enable secure data and service exchanges across various industries and borders. About the Role:We are on the lookout for a passionate and seasoned Staff Software Engineer (Full Stack) to become a vital part of our engineering team. In this role, you will be responsible for creating robust, scalable applications that enhance user experience and drive our mission forward.

Apr 2, 2026
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Prior Labs logo
Full-time|On-site|Berlin

Join Our Innovative TeamAt Prior Labs, we are pioneering the development of foundation models that excel in understanding tabular data, which is essential for the realms of science and business. While foundation models have revolutionized the processing of text and images, structured data remains an untapped frontier. We aim to seize this $600 billion opportunity to transform the way organizations engage with scientific, medical, financial, and business data.Our Momentum: We stand as a global leader in structured data machine learning. Our TabPFN v2 model, featured in Nature, has set new benchmarks in tabular machine learning. Since its launch, we have enhanced model capabilities by over 20 times, recording more than 2.5 million downloads and over 5,500 GitHub stars, along with a rapidly growing adoption rate across research and industry. We are currently advancing the next generation of tabular foundation models and actively commercializing them within leading enterprises across Europe and the US.Meet Our Team: Our diverse team comprises over 20 engineers and researchers, meticulously selected from over 5,000 applicants, with impressive backgrounds from Google, Apple, Amazon, Microsoft, G-Research, Jane Street, Goldman Sachs, and CERN. Led by the creators of TabPFN and mentored by esteemed AI researchers like Bernhard Schölkopf and Turing Award winner Yann LeCun, we are committed to excellence. Discover more about our team here.What Lies Ahead: With the backing of elite investors and leaders from Hugging Face, DeepMind, and Silo AI, we are experiencing rapid growth. This is an exciting moment to join us and play a crucial role in shaping the future of structured data AI. Read our manifesto.Position OverviewWe are seeking exceptional full stack engineers to contribute to the development of the ML Platform that underpins our tabular foundation model offerings. This role presents a unique opportunity to work at the intersection of data science, agents, user experience (UX), and tangible economic impact.Responsibilities:Take ownership of our user-facing frontend and backend applications to develop cutting-edge data science tools.Collaborate with product and research teams to transform new model and agent capabilities into actionable production features.Design and implement high-trust, scalable systems.Focus on optimizing for speed, reliability, and security.Current technology stack includes JavaScript/TypeScript, among others.

Feb 17, 2026
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Atolls logo
Full-time|Hybrid|Berlin

Join Atolls, the world's largest community-driven shopping platform, active in over 20 markets.We empower millions to make informed spending choices through seamless connections with brands and retailers.With a dedicated team of over 1,000 professionals across 10 countries, we create products that are used daily at a global scale, allowing you to take ownership and witness your impact. Ready to influence how people shop confidently? Read on.About This Role:We are seeking a Senior Full Stack Engineer to become a vital member of our Admin Experience team in Berlin, Germany. In this role at Atolls, you will play a crucial part in the development of new features and products, engaging with the entire technology stack from the database layer to the client interface. Your direct contributions will enhance the digital experiences our users depend on.Your efforts will shape how millions interact with our platforms, guiding them towards smart, fair, and rewarding choices.Our Benefits:At Atolls, we prioritize your personal and professional growth. Here’s what you can look forward to:A culture that promotes continuous development, with opportunities for internal mobility.A collaborative and open-minded team that values diverse perspectives and innovative ideas.32 days of paid vacation along with an additional day off for your birthday, ensuring ample time to recharge.A flexible hybrid working model that balances work and personal life.Access to a learning budget and internal training for your professional growth.Mental health coaching to support your well-being.Frequent global and local gatherings to celebrate achievements and foster connections.Potential for a sabbatical after three years with the organization.A cloud-based operational setup facilitating flexibility and collaboration regardless of your location.*These benefits apply globally...

Mar 12, 2026
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bluefishai logo
Full-time|Remote|Berlin, Remote in Germany

About the PositionJoin our dynamic team as a Staff Full-Stack Engineer where your expertise will play a pivotal role at the intersection of product development, infrastructure, and AI-powered solutions. In this influential position, you will spearhead the architecture and continuous improvement of scalable web applications, contributing significantly to the foundation of Bluefish's AI marketing platform.Your collaboration will span multiple teams, working closely with AI engineers, product managers, designers, and infrastructure specialists to convert abstract product concepts into robust and scalable systems. Beyond just feature development, you will define architectural patterns, steer technical direction, and make certain that engineering decisions align with our company’s growth trajectory.We seek an individual with a strong focus on product and system thinking, dedicated to delivering sustainable solutions and creating measurable impacts for our customers.As a technical leader within our engineering division, you will enhance engineering practices across teams by leading design reviews, mentoring senior engineers, and establishing standards that facilitate rapid progress while ensuring reliability and quality.This role provides the chance to shape the architecture of core systems, influence the overall technical strategy of the company, and define how AI-assisted development will drive the future of marketing technology.Note: This role is primarily associated with our office in Berlin, but we offer remote work options within Germany.

Mar 17, 2026
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Statista logo
Full-time|On-site|Hamburg or Berlin

Statista is a global business data platform founded in Hamburg in 2007. The company delivers accurate data and a range of analytics products, with teams based in Hamburg, London, New York, Berlin, and Tokyo. Statista emphasizes diversity and inclusion, welcoming people from all backgrounds and valuing each individual’s unique experience. Role overview The Full-Stack Machine Learning Engineer - Data Products (m/f/d) works across the technology stack to turn raw data into dependable products. The role focuses on backend services, data pipelines, integrating machine learning, and building user-facing features. Engineers in this position take responsibility for their projects from the initial concept through deployment and maintenance. What you will do Write clean, maintainable code in Python and Typescript for easy collaboration. Transform data into products used daily by customers. Apply machine learning and large language models to analyze data and enhance services. Develop and improve both customer-facing and internal services and interfaces. Oversee the full software lifecycle, including design, development, code reviews, deployment, and ongoing maintenance. Communicate clearly in English (written and spoken); German is a plus. Location This role is based in Hamburg or Berlin.

Apr 22, 2026
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1GLOBAL logo
Full-time|On-site|Berlin, Berlin, Germany

About Us1GLOBAL is a pioneering global mobile communications provider, dedicated to delivering innovative connectivity solutions for both enterprises and consumers. With a cutting-edge telecom platform that includes our proprietary global mobile core network, advanced in-house developed eSIM technology, and a comprehensive array of telecom licenses, 1GLOBAL operates as a fully regulated telecommunications provider across 40 countries.We proudly serve leading banks, enterprises, and digital-first businesses, including neo-banks, fast-moving consumer goods firms, travel industry leaders, and payment service providers. Currently, 1GLOBAL connects over 70 million individuals and devices worldwide, empowering our clients to confidently launch, scale, and innovate within the mobile ecosystem.1GLOBAL is a profitable and rapidly expanding enterprise, with projected full-year revenues surpassing US$200 million and profits exceeding US$25 million in 2025. Our strong cash flow allows us to continually invest in infrastructure, platform innovation, and global expansion. Recent years have marked a transformative phase in our journey, with significant enterprise and mass-consumer client acquisitions propelling our evolution into a dominant force in global mobile connectivity, specifically designed to support consumer brands in their telecommunications ventures.Founded in 2022 by seasoned tech entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL has swiftly established itself as a European technology leader reshaping the future of global telecommunications. As a regulated Mobile Virtual Network Operator (MVNO) in 12 countries and a telecom operator in an additional 28 markets, we are headquartered in the Netherlands with exceptional R&D centers located in Lisbon, Berlin, and São Paulo. Our team of nearly 500 experts across 15 countries is united by a singular goal: to redefine global mobile connectivity through technology, scale, and execution excellence.About the TeamWe are seeking a skilled and experienced engineering leader to join our newly formed team. You will collaborate with an international group, spearheading the development of 1GLOBAL's eSIM platform, which encompasses both consumer and IoT solutions. We value teamwork and foster a culture of total ownership over our deliverables, ensuring that we are both autonomous and accountable. Our primary focus is on our customers and our commitment to building and delivering valuable propositions.Fluency in English is essential for this role; please ensure your CV is submitted in English as part of your application.

Mar 4, 2026
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voize logo
Full-time|On-site|Berlin

Why Choose voize? More Than Just a Job!At voize, we're revolutionizing the way frontline professionals manage their time. Our AI technology allows care staff and field workers to effortlessly speak their notes, transforming them into structured documentation. This innovation saves up to 39 minutes per person each day while enhancing overall quality. Backed by Y Combinator and utilized by over 1,000 facilities, our growth trajectory is impressive. Become part of a team where cutting-edge technology meets tangible real-world impact. Your MissionIn the role of a Full Stack Engineer, you will take charge of our customer-facing web platform tailored for nursing managers and administrators while also collaborating on essential backend services. Your primary objective will be to equip our customers with valuable insights and controls that showcase how voize enhances their organizational processes, streamlining nursing tasks and providing an intuitive management system for their fleet of voize devices. Your contributions will be pivotal to voize's expansion, empowering both nursing staff and management alike. Your Daily Responsibilities - A Diverse ExperienceLead the development of the nursing management web application, delivering exceptional user experience through modern React and TypeScript.Collaborate on backend services while contributing to CI/CD processes and testing.Design and implement secure, user-friendly device configuration, data-intensive dashboards, and scalable account flows across various industries.Influence product decisions that deliver real value to users.Identify and resolve bugs while proactively monitoring error logs to ensure quality. Your Qualifications - What You BringStrong product and end-to-end thinking with a UX-focused end-user perspective.Extensive experience in modern React and sound knowledge of TypeScript architecture.Proficient in backend development, particularly with Kotlin.Excellent communication skills across teams, with a comfort for rapid iteration and independent work.Solid understanding of Git workflows, collaboration practices, and a strong testing discipline coupled with CI/CD experience. Our Success Mindset - The voize ApproachWe view challenges as opportunities and iterate swiftly to deliver impactful solutions.

Apr 2, 2026
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JetBrains s.r.o. logo
Full-time|Remote|Amsterdam, Netherlands; Berlin, Germany; Munich, Germany; Remote, Germany

JetBrains s.r.o. creates tools that help developers automate repetitive tasks so they can focus on writing quality code. Since 2000, the company has aimed to make software development more productive and enjoyable for engineers worldwide. Role overview The Customer Success Engineer - Kotlin Multiplatform (KMP) supports engineering teams as they adopt KMP in real-world projects. This role guides organizations from their first evaluation through to successful deployment. Along the way, it gathers feedback and collaborates closely with JetBrains product teams to help shape the future of KMP. What you will do Work directly with organizations at various stages of KMP adoption, from initial exploration to production rollout. Assist teams in migrating, integrating, and scaling shared codebases using Kotlin Multiplatform. Support teams moving from experimentation to production and help address technical challenges as they arise. Reach out to potential users who could benefit from adopting KMP. Identify each customer’s technical needs, use cases, and any barriers to adoption. Advise on architecture, feasibility, and strategies for implementing KMP. Collect structured feedback and insights from clients. Collaborate with JetBrains product and engineering teams to influence the KMP roadmap and improve available tooling. Common questions you'll help solve What is the safest way to migrate a large Android app to shared logic? How much code sharing is practical or advisable? How can teams address resistance from iOS developers working with Kotlin APIs? What’s the best way to organize a codebase for collaboration across teams? How can teams resolve slower build times after introducing KMP? How success is measured Organizations deliver Kotlin Multiplatform in production environments. Teams increase their use of shared code over time. KMP adoption continues beyond initial trials. User feedback results in tangible improvements to KMP and its tooling. Requirements Experience working with Kotlin, either for Android or backend development. Understanding of mobile architectures on both Android and iOS, especially with Kotlin. Strong communication skills and a knack for problem solving. Background with cloud technologies and CI/CD pipelines. Ability to collaborate effectively within a team-driven environment. Location This position is available in Amsterdam (Netherlands), Berlin or Munich (Germany), or remote within Germany.

Apr 24, 2026
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finanzcheck logo
Full-time|On-site|Berlin

Join finanzcheck, the premier online loan comparison platform in Germany, and be part of shaping the future of the credit market. Our commitment to excellence has earned us the prestigious Kununu Top Employer Award in 2022. Become part of our success story today! At finanzcheck, our development teams are strategically aligned along the customer journey, fully responsible for their respective areas of the platform and related services. Operating autonomously and self-managed, we champion effective network structures that empower teams to make informed decisions throughout our exciting roadmap, fostering shared responsibility and collaboration among all members. YOUR NEW TEAM We are on the lookout for a Senior Full Stack Engineer to join our Customer Communication team. Our mission is to facilitate optimal loan application processes by creating an innovative omni-channel communication landscape. We build services that ensure timely and meaningful interactions with our customers through various channels, including email, SMS, RCS, WhatsApp, and our fully automated dialer for inbound and outbound calls, which serves as a core service for our loan advisors. Additionally, we continuously enhance the customer experience through data-driven experiments and a sophisticated self-built optimization framework. WHAT YOU WILL BE DOING Develop and maintain a data-intensive distributed environment utilizing Node.js and TypeScript services hosted on AWS Lambda and Kubernetes. Ensure the stability and reliability of customer communication services through efficient traffic management and monitoring. Conceptualize, develop new features, and optimize existing systems to enhance business-critical performance and efficiency. Proactively propose ideas for integrating artificial intelligence to improve our systems and processes. Engage actively in team decision-making regarding objectives, concepts, timelines, and technology stack. Collaborate closely with the Product Owner to plan and continuously evolve new features within the team’s domain. Take end-to-end ownership of development and operations, adhering to our principle of “you build it, you run it, you own it,” which encompasses DevOps responsibilities. YOUR PROFILE Proven experience with Node.js and TypeScript. ...

Mar 23, 2026
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idealo logo
Full-time|On-site|Berlin, Berlin, Deutschland

Join Our Product Enrichment Team at idealo, where we are responsible for some of the core components of the platform, including Editorial Content and Product Information. Our aim is to empower customers to make informed purchasing decisions.Our mission is to present the entire e-commerce market in a way that is clear, structured, and inspiring. We develop tools that assist our content teams in managing product listings while ensuring robust data management.The upcoming challenges are particularly exciting: We are driving the automated creation and maintenance of our product catalog using Machine Learning and AI, while optimizing our services for a modern, scalable AWS Cloud environment.Your ResponsibilitiesFull Stack Engineering: Develop sophisticated web applications using TypeScript/JavaScript, NestJS, React, Python, Kafka Streams.

Nov 21, 2025
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Axel Springer SE logo
Full-time|On-site|Berlin

Axel Springer SE is looking for a Senior Full-Stack Engineer to help build and improve scalable web applications in Berlin. This position involves working across the full software development lifecycle, from initial concepts through deployment. The team values practical solutions and strong collaboration. Role overview This role focuses on designing, developing, and optimizing web applications. Daily work includes both front-end and back-end tasks, ensuring that features are well integrated and reliable from start to finish. What you will do Develop and maintain scalable web applications Participate in all stages of the software development lifecycle Work closely with team members to ensure smooth integration and functionality Location This position is based in Berlin.

Apr 29, 2026
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voize logo
Full-time|On-site|Berlin

Why choose voize? We are more than just an employer!At voize, we prioritize giving frontline workers the invaluable gift of time—time to care, connect, and truly be present. Unfortunately, much of that time is consumed by administrative tasks that detract from what truly matters: the people.We are revolutionizing this by developing an AI companion that liberates nurses from administrative burdens, allowing them to reclaim up to 30% of their time. Our mission is not to replace human effort but to enhance it, amplifying their impact in the care sector. Currently, over 1,100 care facilities trust voize, and more than 75,000 nurses depend on our AI companion to streamline their daily responsibilities.Supported by a robust $50M Series A funding round led by Balderton Capital, with contributions from HV Capital, Y Combinator, and other prominent VCs, our mission is grounded in technological innovation with a profound social impact. Join us in this transformative journey!

Mar 2, 2026
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TechBiz Global logo
Full-time|On-site|Berlin, Berlin, Germany

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.

Feb 13, 2025
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Melotech logo
Full-time|On-site|Berlin

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.

Feb 23, 2026
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cosuno logo
Full-time|Remote|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 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.

Mar 1, 2026
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think-cell Software GmbH logo
Full-time|On-site|Berlin (Germany)

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.

Mar 27, 2026
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Melotech logo
Internship|On-site|Berlin

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.

Feb 23, 2026
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cosuno logo
Full-time|Remote|Berlin/Remote

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.

Mar 1, 2026

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