Fullstack Engineer (m/w/d) – Next.js & Python | octoenergy Berlin

Join our dedicated team at europeanhomecaregmbh as a Psychologist (m/f/d) in Berlin. We are seeking an empathetic and skilled professional to provide mental health support and counseling services to our diverse clientele.

Become a part of Voyfai, an innovative Series A startup revolutionizing logistics and technology throughout Europe.Based in the vibrant city of Berlin, we are at the forefront of a network of companies operating across various European markets.This is an exceptional chance to take the reins from the very beginning, make a significant impact, and thrive in a fast-paced, dynamic setting. Whether you're refining processes, crafting strategies, or spearheading initiatives, your efforts will directly affect the success of Voyfai and the enterprises we assist. If you have a passion for building innovative solutions from the ground up and want to be part of a rapidly growing company, we are eager to hear from you.Your RoleWe are on the lookout for a talented Senior Software Engineer (m/f/d) to join us in constructing the essential infrastructure of our logistics platform. In this pivotal role, you will collaborate closely with AI engineers and product stakeholders to define system architecture, integrate with transport management systems, and develop customer-facing features that utilize large language models. Your contributions will play a vital role in shaping our engineering practices and establishing a scalable foundation for future product development over the next year.Key Responsibilities:Design and implement scalable software solutions with a focus on robust system architecture and clean coding practices.Create and enhance integrations with transport management systems and third-party logistics platforms.Partner with AI engineers to deliver customer-centric features powered by advanced language models.Enhance system reliability, maintainability, and scalability by managing technical debt and evolving the technology stack.Utilize PostgreSQL to ensure data consistency, integrity, and performance.Employ cloud platforms such as AWS or GCP to facilitate infrastructure and deployment.Contribute to DevOps and CI/CD practices to enhance release speed and operational stability.Occasionally engage with customers to translate their requirements into product and engineering solutions.What You Bring:A minimum of 5 years of professional software engineering experience, demonstrating strong backend architecture skills and proficiency across the full stack.Proficient in JavaScript or TypeScript in both backend and frontend contexts.Experience with SQL databases, particularly PostgreSQL.Familiarity with cloud platforms such as AWS or GCP.Strong understanding of DevOps and CI/CD methodologies.Excellent problem-solving skills and a proactive approach to challenges.

Join redcare-pharmacy as a Senior Fullstack Engineer and play a pivotal role in shaping our digital solutions. You will be responsible for developing and maintaining our web applications that serve our clients efficiently. We are looking for a talented engineer who is passionate about both frontend and backend development.As part of our team, you will collaborate with cross-functional teams to create user-friendly software that meets the needs of our customers. This position offers the opportunity to work in a fast-paced environment where innovation and creativity are encouraged.

Join a dynamic, cross-functional development team committed to exploring the most effective technical solutions.Leverage cutting-edge technologies including Spring Boot, Kafka, Typescript, Node, and React.Collaborate with fellow engineers to assess the availability, robustness, and performance of our systems, designing them to meet specified requirements.Be part of an agile team, guiding the entire development process from concept to a product that engages millions of users daily.Design and implement high-performance, semantic components in the frontend, hosted on AWS.Champion and uphold technical excellence while considering stakeholder needs.Work closely with product management to craft the best possible product.

About ClimatiqAt Climatiq, we believe in making a positive impact on the planet, not just the profit margins. If you are passionate about driving change, you’ll find your place with us.We are an innovative startup dedicated to integrating carbon intelligence into business decisions globally. Our platform combines the leading emissions database with advanced AI and calculation tools, empowering thousands of sustainability teams to accelerate their efforts in reducing emissions across corporate and product carbon footprints.Our mission is united in the fight against climate change. We prioritize both speed and quality, as the urgency of the crisis compels us to act swiftly without compromising excellence. Trust, transparent communication, and commitment to outstanding results are the cornerstones of our team culture.Based in Berlin, we embrace a remote-friendly approach, enabling collaboration across Europe. Backed by esteemed investors like Alstin Capital, Singular, and Cherry Ventures, we proudly hold B Corp certification.

Are you an enthusiastic Fullstack Engineer with a passion for live streaming technologies? Join our dynamic team at Axel Springer News Media National in Berlin, where you'll have the opportunity to work on cutting-edge projects and develop innovative solutions. Your expertise will contribute to enhancing our live streaming platform, delivering high-quality experiences to our users.

Join our dynamic team as a Senior Fullstack Engineer where you will play a crucial role in developing innovative software solutions. In this remote-friendly position, you will collaborate with cross-functional teams to design, build, and maintain high-quality applications that enhance user experience.Your expertise in both front-end and back-end technologies will be essential as you tackle complex challenges and drive improvements across our platforms. We are looking for a passionate engineer who thrives in a fast-paced environment and is eager to contribute to the success of our projects.

Join our innovative team as a Fullstack Software Engineer specializing in Node.js. In this role, you will design, develop, and maintain scalable applications while collaborating with cross-functional teams to deliver robust solutions. Your expertise in both frontend and backend technologies will be essential in creating seamless user experiences.

About the RoleAs a Senior Fullstack Engineer at peec, you will take charge of intricate product features, overseeing everything from architecture and data modeling to crafting aesthetically pleasing and high-performance user interfaces.Key ResponsibilitiesOwn complex product features from inception to completion, ensuring a seamless user experience.Transform product concepts and designs into pixel-perfect, production-grade interfaces utilizing modern frameworks and component libraries.Collaborate with Product, Design, and Engineering teams to define project scope, shape technical direction, and deliver delightful features.Enhance and evolve our backend infrastructure along with our frontend design systems, promoting consistency, scalability, and developer efficiency.Challenge existing paradigms across the stack by enhancing developer experience, introducing innovative capabilities, and fostering a culture of innovation.

Are you enthusiastic about software development and the renewable energy sector?If you excel in dynamic, fast-paced, and purpose-driven environments, and you're eager to take ownership of your work, we want to hear from you! Join us in enhancing our innovative frontend solutions that are making a positive impact on the world.About Reonic At Reonic, our goal is to simplify renewable technology through our B2B SaaS solutions tailored for solar energy, storage solutions, and heat pumps. Supported by leading investors and trusted by over 1,600 business clients, we're expanding our engineering team with a Fullstack Developer.Your Role Frontend Development: Engage in the development of our B2B SaaS products, focusing primarily on our feature-rich frontends. Design Engaging Interfaces: Create intuitive and responsive components utilizing React, TypeScript, and Tailwind CSS. Enhance User Experience: Contribute to crafting exceptional User Experiences for our market. Collaborate with Teams: Work closely with Product and Design teams to shape the overall aesthetic of the web application. (Optional) Expand Your RoleDepending on your interests and skill set, you may have opportunities to engage with:Node.js back-end developmentDatabase design and management (especially SQL and bonus points for experience with PostgreSQL)Integration with Prisma ORMExploration of Rust (not mandatory, but a valuable asset if you’re interested)Familiarity with GraphQL is a significant advantage!Are You the Right Fit? Practical Experience: At least 1 year of software development experience, preferably in a startup or product-focused environment Commitment to Renewable Energy: A genuine passion for renewable technologies and sustainability.

Join our dynamic Identity team as a Senior Fullstack Engineer, where you'll play a pivotal role in delivering exceptional authentication experiences and safeguarding accounts for millions of users worldwide. Your expertise will also help create central services that empower teams and products throughout SumUp. We seek an adaptable and proactive individual who is eager to take ownership of their work. Your primary responsibilities will focus on frontend development using TypeScript with frameworks like React and Next.js, effectively bridging the gap to our backend development in Go. As part of a diverse team with a wide-ranging scope, you will collaborate with fellow engineers on transformative initiatives. You will have the opportunity to take charge of projects from inception to execution, including requirements gathering, solution design, and stakeholder communication. About the Team: Our team is cross-functional and deeply rooted in engineering excellence. Expect to work alongside talented and motivated colleagues on impactful projects that reach far and wide. We uphold a high standard in engineering practices and continuously strive to elevate our processes. We emphasize a cohesive team mentality and believe in collaborating as a unified unit beyond technical competencies. Join us! Your Responsibilities: Own the frontend development efforts, while collaborating on the design and building of clean and reliable APIs on the backend that support our frontends. Work closely with Product Designers and Mobile Engineers to create a robust feedback loop. Contribute to our internal Design System, ensuring a seamless experience across platforms. Develop secure and user-friendly self-service features that empower users to manage their accounts and preferences confidently. Engage with a talented, distributed team that values collaboration, learning, and continuous improvement. Enjoy your work! We want someone who is passionate about what they do.

As a well-established IT service provider, we specialize in developing modern, scalable software solutions for clients across diverse industries. We embrace cutting-edge technologies, agile methodologies, and a passionate team dedicated to crafting exceptional digital products. To strengthen our team, we are looking for a seasoned Senior Fullstack Developer / IT Consultant (m/f/d) who thrives on technological diversity and enjoys thinking holistically about complex solutions—from backend to frontend—while providing expert consultation to our clients.You will develop end-to-end solutions that deliver real value to our clients, actively shaping microservices and modern software architectures.You will implement modern web UIs that are responsive, accessible, and user-centered, using frameworks like Angular, React, or Vue, supported by UI frameworks and libraries such as Tailwind CSS, MUI, or PrimeNG.You will utilize prototyping tools like Figma to comprehend designs from UX designers and translate them accurately into frontend code.You will develop and maintain high-performance backend services using Java or Kotlin, employing Spring Boot for robust microservices and reliably integrating databases and external interfaces.You will advocate for high software quality, including automated testing (e.g., Cypress, Playwright) and Clean Code principles.You will guide clients through architectural, technological, and implementation inquiries, communicating technical content in an understandable manner.You will collaborate closely with UX/UI designers, product owners, and developers from other disciplines, actively contributing to agile teams.You will conduct code reviews, provide constructive feedback, and ensure adherence to best practices, architectural guidelines, and high code quality within the team.

Join our dynamic team at ebreuningergmbhco as a Senior Fullstack Software Engineer with a focus on frontend development for our innovative NAVI/REME project. In this role, you will collaborate with cross-functional teams to design, develop, and maintain high-quality software solutions. You'll be responsible for implementing responsive user interfaces and ensuring a seamless user experience.If you have a passion for creating cutting-edge applications and possess strong problem-solving skills, we want to hear from you!

Role overview As a Senior Fullstack Engineer focused on AdTech at Delivery Hero, this position centers on building and enhancing products that drive advertising technology within the company. The work involves collaborating with various teams to create and improve applications that balance user needs with business objectives. What you will do Design and develop fullstack applications for AdTech initiatives Work with colleagues across departments to deliver solutions that support both users and business stakeholders Continuously refine and optimize existing products to improve performance and outcomes Location This role is based in Berlin.

Role overview Axel Springer SE is hiring a Staff Fullstack Engineer (m/f/d) in Berlin. This position focuses on building and maintaining full-stack web applications that improve user experience and engagement. The role sits within the IT department and involves hands-on work across both front-end and back-end systems. What you will do Design, develop, and maintain full-stack applications for web platforms Collaborate closely with team members and stakeholders Contribute to projects that support user engagement and digital growth Work with modern technologies as part of a larger IT organization Location This role is based in Berlin.

At Enpal, we are not just a company; we are a movement dedicated to revolutionizing the energy sector. As a prominent greentech unicorn and one of Europe’s fastest-growing energy enterprises, we strive to make solar energy accessible and hassle-free for homeowners across the continent. Our groundbreaking business model encompasses solar panels, heat pumps, home energy storage systems, and EV charging stations, reshaping the residential energy landscape. With our commitment to empowering homeowners to adopt clean energy, we are paving the way for a sustainable and decentralized energy future.As a frontrunner in the residential solar energy market, Enpal is on a growth trajectory with a clear vision: to spearhead Europe’s transition towards sustainable and decentralized energy generation.Job DescriptionTake full end-to-end ownership of developing and scaling features, services, and systems across the entire tech stack (Typescript, Node, NestJS, React, Postgres, AWS).Design and deliver robust, scalable backend services coupled with intuitive frontend experiences.Oversee deployments, develop and maintain CI/CD pipelines, manage infrastructure as code, and ensure seamless production operations.Write clean, testable, and maintainable code with an emphasis on long-term quality and scalability.Monitor systems, troubleshoot complex issues, drive performance enhancements, and contribute to architectural decisions.(For senior candidates) Mentor and guide fellow engineers, lead technical discussions, and influence engineering standards.Qualifications4-6+ years of professional software development experience (mid-level to senior).Strong expertise in TypeScript and Node.js, or significant experience in other modern programming languages with a readiness to adopt our stack.Hands-on experience with React/Next.js and contemporary frontend development practices.Demonstrated ability to build and consume APIs; experience with cross-team integrations.Proven track record of owning projects from inception through deployment and maintenance.Solid experience with CI/CD tools (GitHub Actions, Azure DevOps, or similar).A strong commitment to code quality, testing best practices, and building scalable systems.(For senior candidates) Experience mentoring others, guiding technical decisions, or establishing engineering standards.

Join Elara Digital GmbH as we revolutionize the software landscape by replacing outdated tools in a market that has long been neglected by modern technology. Our product is actively utilized by customers on a daily basis, and we prioritize a quick feedback loop between user needs and our development efforts. We are seeking a talented Senior Fullstack Developer who can enhance our product, making it faster and easier to sell.In this role, you will work closely with our CTO in a compact team where your contributions will have a direct impact on the product. You will analyze our codebase and product from the perspective of someone who values clean architecture and maintainable code. You will proactively identify and resolve issues, not just in response to tickets, but out of a deep understanding of how the system should function. Collaborating with the CTO, you will translate often contradictory customer feedback into a coherent product roadmap, prioritizing effective solutions over quick fixes. Your leadership will inspire other developers, fostering a culture of high standards through thorough code reviews, pair programming, and meticulous ticket management. You will also possess a keen eye for modern and intuitive design, as we aim to replace cumbersome legacy tools with a user-friendly interface that feels contemporary, fast, and straightforward to navigate.You will know you are succeeding when our product becomes easier to sell, customer complaints decrease, and you consistently meet deadlines set by the CTO.We value decisiveness and independence; you should be prepared to make decisions without waiting for directives. When you need assistance, you will seek it out. Your passion for the product will drive you to understand customer needs deeply. Setbacks are part of the process, but we expect you to show up each day with renewed energy and to share your learnings with the team, as collaboration is at the heart of our engineering philosophy at Elara.

Join our dynamic team as a Senior Fullstack Engineer in the Seller Center at ABOUT YOU GmbH! In this role, you will leverage your expertise in both front-end and back-end technologies to enhance our platform and improve seller experiences. You will be a pivotal part of our product and tech departments, collaborating with cross-functional teams to deliver high-quality solutions.Your responsibilities include designing and implementing robust features, optimizing application performance, and ensuring seamless integration across various systems. We are looking for innovative thinkers who are passionate about technology and eager to contribute to our mission of transforming e-commerce.

Role overview Forvis Mazars seeks a Senior Fullstack Engineer in Berlin with a strong focus on cloud and AI technologies. This position involves designing, developing, and implementing solutions that draw on modern cloud services and artificial intelligence. What you will do Design and build fullstack applications that connect cloud and AI technologies Collaborate with colleagues to deliver digital solutions for clients Apply technical expertise to projects supporting digital transformation Enhance client experiences by creating innovative, scalable systems Requirements Experience with both frontend and backend development Solid background in cloud platforms and AI tools Enjoys collaborative work and knowledge sharing Motivated to try new approaches and push technical boundaries This role is based in Berlin. Forvis Mazars encourages applications from all genders.