Clicking Apply Now takes you to AutoApply where you can tailor your resume and apply.
Experience Level
Mid to Senior
Qualifications
Minimum of 3 years of hands-on experience in back-end development. Strong proficiency in Ruby, including its nuances and syntax. Basic knowledge of front-end technologies such as JavaScript, HTML5, and CSS3.Experience with automated testing methodologies. Familiarity with MVC, Mocking, RESTful services, and ORM. Proficient in both spoken and written English. Background in agile methodologies. Preferred Qualifications:Experience in analyzing system health and performance metrics. Familiarity with cloud infrastructure, SQL, and NoSQL databases. Experience with Service-Oriented Architectures and database scaling. Exposure to modern front-end frameworks like React and Vue.js.
About the job
Join our dynamic team at Blackbird Collective, where we partner with innovative startups seeking talented Backend Engineers to enhance their existing teams. Our reputation for delivering quality talent through referrals speaks volumes about our clients, each one an exceptional employer, offering thrilling projects within international teams.
About Blackbird Collective
Blackbird Collective is a leading HR organization specializing in connecting startups and established companies with the right talent. Based in Berlin, we focus on freelance and interim recruitment projects, ensuring our clients find employees who meet their unique needs.
About the Role Applike is looking for a Working Student - Backend Developer & Data Analyst in Hamburg. This position offers practical experience in building backend systems and working with data to support business decisions. Collaborate with experienced professionals and contribute to real projects in the tech industry.
Join our dynamic team at Sopra Steria as a Werkstudent in Frontend and Backend Development! This is an exciting opportunity for students looking to apply their academic knowledge in a practical setting while contributing to innovative projects.
Join our innovative INSPO team as a Senior Backend Infrastructure Developer. In this role, you will leverage your expertise to design and implement robust backend solutions that support our growing infrastructure. Collaborate with cross-functional teams to ensure seamless integration and optimization of our systems, all while enjoying the flexibility of remote work.
Join our dynamic team at check24 as a (Junior) Backend Web Developer specializing in Mobile Communications. In this role, you will collaborate with experienced developers to create efficient backend systems that support our mobile applications. You will have the opportunity to contribute to exciting projects and learn from industry experts in a supportive environment.
At xneelo, we are driven by purpose and committed to enabling businesses through our exceptional hosting services. Our mission is to empower customers to establish and conduct transactions online with confidence. Each day, we strive to maintain our customers' trust through our brand promise of being 'trusted in hosting'. We provide reliable web hosting services focused on infrastructure stability, value for money, and consistent service delivery.Our backend software engineers play a crucial role in ensuring that when a customer interacts with our web application, the necessary actions seamlessly occur within our global hosting infrastructure.Managing a large-scale, mass-market hosting infrastructure involves overcoming complex challenges that demand quality automation and processes to ensure optimal performance around the clock, every day of the year.At xneelo, product development hinges on engineering our backend infrastructure, which is vital for transforming complexity into simplicity and delighting our customers.We are passionate about the frequent, iterative delivery of high-quality software and aim to build enduring solutions by embracing Agile principles and leveraging the latest technologies available. Our teams are autonomous and take full responsibility for their segments within the xneelo ecosystem, requiring a solid understanding of Agile development methodologies.Excited about this opportunity? Here’s what you'll be doing:Addressing intriguing and large-scale backend technical challenges.Contributing to continuous improvement in our processes and practices.Identifying opportunities for innovation and optimization.Collaborating with Product Owners and stakeholders to understand customer needs and deliver innovative, robust solutions.Providing operational support to customers when escalated through the Client Services team.Your passion likely includes:Programming, open-source technologies, and IT in general.Creating optimal systems with straightforward procedures.Agile development and thriving in a self-organizing team environment.Collaborating and sharing innovative ideas.
Anyone AI is seeking Backend Developers to join project-based consulting work with a prominent AI research lab. This remote, part-time role centers on designing and evaluating realistic software engineering tasks for AI training, with a focus on backend systems. Role overview As a Backend Developer – AI Trainer, the position involves crafting and reviewing coding scenarios that mirror real-world engineering challenges. Typical tasks include bug resolution, feature implementation, refactoring, and test creation. The work will also require reviewing peer submissions to ensure they meet quality standards. What you will do Create and implement multi-file coding tasks, including bug fixes, new features, refactoring, and test generation. Draft clear, natural language specifications and provide reference implementations. Develop and expand unit and integration test suites. Review peer-generated tasks for accuracy, clarity, and feasibility. Identify edge cases, ambiguities, and potential failure points. Ensure specifications, code, and outputs remain consistent and aligned. Requirements Professional fluency in written English and strong communication skills. 3 to 7 years of hands-on experience in software engineering. Advanced knowledge of Python and JavaScript or TypeScript, plus working familiarity with Java, C#, or Go. Experience in backend or full-stack development in production environments. Proficiency with testing frameworks such as pytest, Jest, JUnit, xUnit, or Go testing tools. Ability to debug and work within large, multi-file codebases. Comfort with code reviews, refactoring, and production migrations. Engagement details Part-time, project-based consulting Remote work Location: Germany Expected outcomes Deliver high-quality, production-ready outputs for AI training and evaluation.
Join our dynamic team at CHECK24 as a Full-Stack Developer with a focus on backend technologies. You will be responsible for developing innovative solutions that enhance our digital platforms and services. Collaborate with cross-functional teams to drive projects from concept to completion, ensuring high performance and responsiveness of applications.
Join our dynamic INSPO team as a Senior Backend/Infrastructure Developer, where you will play a pivotal role in designing and implementing innovative solutions that drive our business forward. This remote position offers flexibility while allowing you to collaborate with a talented group of professionals in a fast-paced environment.
Role Overview check24 is looking for a Full-Stack Developer (m/f/d) with a strong backend focus to join the team in Erfurt. This position centers on designing and building backend solutions that support and improve web and application products. What You Will Do Develop and implement backend systems that power web and app features Work closely with developers and DevOps specialists to deliver reliable, maintainable software Contribute to seamless integration between frontend and backend components Support project success by ensuring backend performance and scalability Who We're Looking For Strong interest in backend development within a full-stack context Motivation to collaborate and share knowledge with a skilled team Drive to improve technology and deliver solutions that help customers
Join Our Team at JimdoAt Jimdo, we empower solopreneurs and micro-businesses to thrive by simplifying the journey of building successful online ventures. Since our inception in 2007, we have evolved from a small initiative in a Northern German farmhouse to a leading AI-driven platform with a diverse team of over 220 professionals from more than 50 nations, helping to create over 36 million websites worldwide.We believe in personalized, data-driven guidance that combines design, business tools, and cutting-edge AI technology to transform real user insights into actionable steps for our customers. Our mission is clear: to help self-employed individuals navigate the complexities of running a business with confidence.Your Role:As a Senior Backend Engineer, you will be instrumental in enhancing and scaling our backend systems, ensuring they deliver optimal performance and reliability. You will collaborate with cross-functional teams to create seamless integrations and contribute to our commitment to innovation.Your Contributions:Design, develop, and enhance API services with a focus on scalability and performance.Work closely with cross-functional teams to understand requirements and ensure backend solutions are fully integrated.Maintain high standards of code quality through thorough reviews and testing.Diagnose and resolve backend issues to minimize downtime and enhance performance.Stay abreast of industry trends and best practices in backend development.Provide valuable insights and feedback to the Tech Lead and stakeholders regarding backend solutions.
jobgether is looking for a Backend Engineer based in Germany. This position centers on building and maintaining the backend systems that support our platform. Role overview The Backend Engineer will work closely with front-end developers and other team members to deliver reliable, efficient applications. The main focus is on developing server-side features and ensuring the backend infrastructure meets the needs of the platform. What you will do Develop and maintain backend systems that power jobgether’s platform Collaborate with front-end developers to create seamless user experiences Use expertise in server-side languages and frameworks to improve product features Requirements Strong experience with server-side programming languages and frameworks Ability to work effectively with cross-functional teams Based in Germany
We are currently partnering with several cutting-edge startups in search of talented Backend Engineers to enhance their existing teams. Our reputation for delivering excellent candidates through referrals has established our clients as outstanding employers, offering the opportunity to work on exciting projects within dynamic international teams.
Join our innovative team as a Senior Backend Programmer in our cutting-edge office located in Frankfurt, Germany. In this pivotal role, you will be instrumental in designing and enhancing scalable online backend systems. You will leverage your expertise in online services, particularly in real-time and game application contexts. Collaboration is key, as you will work closely with cross-functional teams, including game designers and programmers, to deliver high-quality gaming experiences.
About Qualifyze,Founded in 2019, Qualifyze is at the forefront of supply chain compliance management within the Life Sciences sector, earning the trust of over 1,500 pharmaceutical and healthcare organizations globally. Our comprehensive digital solutions seamlessly connect manufacturers, suppliers, and a vast network of over 250 auditors and quality professionals.With an impressive record of more than 4,500 audits conducted across 85+ countries, we boast the largest and most accurate supplier network, complemented by robust data analytics tools. Qualifyze is your ideal partner for ensuring quality compliance and mitigating supply chain risks in the Life Sciences industry.Role OverviewWe are on the lookout for a Senior Backend Engineer to enhance our Tech department, particularly within the Engineering team. You will join a dynamic group of over 50 professionals dedicated to engineering and data. Our technology stack prominently features TypeScript with React and Node.js, alongside Java for specific projects.At Qualifyze, we believe that software engineering transcends mere coding—it’s about shaping the future. We seek engineers who recognize that every line of code contributes to a lasting legacy. As part of our team, you will focus on streamlining feedback loops, developing scalable solutions, and fostering clear communication with the business. You will advocate for clean architectures, robust testing strategies, and domain-driven design principles to deliver substantial value at every step.Main ResponsibilitiesLead backend architecture, testing, and technical decisions across teams, ensuring scalable, high-quality outcomes while adhering to best practices.Tackle and resolve intricate tasks within large-scale projects, or independently manage smaller projects.Effectively communicate and collaborate with team members, the DevOps team, product managers, and the design team. You will spearhead the technical strategy, translating product requirements into clear, functional solutions.
Role Overview Sopra Steria is looking for an AI Backend Developer (m/w/d) to help build and improve AI-driven backend systems for public sector projects. This position is open to candidates across Germany (bundesweit). What You Will Do Develop and maintain backend components that power AI solutions for public sector clients Work with modern technologies to create scalable and efficient systems Contribute ideas and code that support digital transformation and better digital services for citizens About Sopra Steria Sopra Steria delivers digital solutions and consulting for public and private sector organizations. The team focuses on practical innovation and improving everyday experiences through technology.
Join our innovative team at dev2 as a Senior Backend Software Engineer, where you'll be instrumental in crafting robust and scalable software solutions. In this role, you will collaborate closely with cross-functional teams to design, develop, and deploy high-performance backend systems.
About the RoleWe are on the lookout for two highly skilled backend engineers to join our dynamic team in Berlin. You will be instrumental in advancing the development and implementation of our technology, enhancing our capacity to create core backend functionalities, and empowering other teams to utilize this backend for their projects.If you have a passion for creating exceptional products, thrive in a fast-paced environment, and are eager to contribute to the success of an ambitious startup, this is the perfect opportunity for you.Our Tech Stack:Python / FastAPIPostgreSQL / MongoDB / ElasticCloud LLM providers + bare metal GPUsGCPAs an early team member, you will assume significant responsibilities from day one, with the chance to influence our technological architecture and infrastructure.Join one of the most ambitious AI companies today, collaborating with a world-class team of experts in their fields, and experience an incredibly stimulating work environment. In This Role You WillLead the delivery of complex projects, coordinating with cross-functional teams, and ensuring timely completion of essential components.Develop a deep understanding of Reliant's vision and integrate this into your architectural and process decisions in daily operations.Offer insights to refine UI/UX concepts and assist in the planning of backend and infrastructure development.Take proactive responsibility for long-term code quality and architecture. About YouThe ideal candidate will have a proven track record in backend or full-stack development, with a focus on rapid innovation and effective systems design that supports growth opportunities for both the product and the team.To thrive in this role, you should possess the following skills and experiences:5+ years of demonstrated experience in building backend services or distributed systems.Ability to design, develop, test, and maintain backend services and APIs that support product features, including writing robust, production-quality code.Engage in system and service design; contribute to architectural discussions and make informed trade-offs regarding scalability, latency, cost, and reliability.Navigate ambiguity effectively; translate vague or high-level requirements into actionable implementation plans.Collaborate with cross-functional partners including product management, frontend, UX, data, and operations to define requirements, plan implementations, and deliver features.Ensure high code quality by writing, reviewing, and improving unit/integration tests; actively participate in code reviews.
Join Aiven as a Backend Engineer specializing in ClickHouse. In this role, you will be part of a dynamic team focused on building scalable and efficient data solutions. You will leverage your expertise to optimize our backend architecture, ensuring reliability and performance.
ABOUT USAt Avelios, our vision is to revolutionize healthcare through our advanced software platform, designed for the data-driven digitization of hospitals and patient care. Our modular platform enhances hospital workflows using innovative technology, ensuring that healthcare professionals can provide exceptional patient care. As we expand rapidly, we recognize that diverse backgrounds strengthen our team and mission.THE TEAM AND ROLEAs a Working Student in Backend Engineering (All Genders), you will join a dynamic development team and gain practical experience in creating large-scale, mission-critical software. Collaborating with seasoned engineers, you will contribute to the foundational digital infrastructure that empowers real-world clinical care, while learning to produce secure, scalable, and high-quality code that makes a tangible difference.YOUR RESPONSIBILITIESCollaborate with our core development team on impactful product features.Design, test, deploy, and maintain backend or frontend components of Avelios services.Acquire knowledge on building and maintaining large-scale clinical software infrastructure.Utilize modern technologies in a high-stakes healthcare environment.Learn and implement best practices in secure and efficient software engineering.Contribute innovative ideas to enhance performance, usability, and user experience.YOUR QUALIFICATIONSCurrently enrolled in Informatics, Computer Science, Business Informatics, or a related field.Proficiency in at least one of the following programming languages: Java, C++, or Rust.Demonstrated coding experience through projects or GitHub contributions is advantageous.A genuine enthusiasm for learning and exploring new technologies.A solution-oriented mindset with a strong emphasis on execution.Fluency in German and/or English.YOUR BENEFITSGain valuable hands-on experience in a cutting-edge healthcare technology environment.Work alongside experienced professionals and learn best practices in the industry.Flexible working hours to accommodate your studies.
Join our dynamic INSPO team as a Senior Backend/Infrastructure Developer! In this pivotal role, you will design and implement robust backend systems that power our innovative applications. Collaborate with cross-functional teams to enhance infrastructure resilience, scalability, and performance. Your expertise will help us drive our projects forward while embracing the flexibility of remote work.
