Hire the best Java Developers in Koeln, DE
Check out Java Developers in Koeln, DE with the skills you need for your next job.
- $50 hourly
- 0.0/5
- (0 jobs)
I’m a versatile Software Engineer with expertise in backend and frontend development, API design, cloud technologies, and cross-platform applications. I develop scalable, high-performance solutions that power modern businesses. 🔹 Backend & API Development: Java (Spring Boot), C# (.NET), Node.js, Python 🔹 Cloud & DevOps: AWS (Lambda, EC2, RDS, DynamoDB), CI/CD, Docker, Kubernetes 🔹 Database & Data Processing: PostgreSQL, MySQL, MongoDB, Redis, Oracle PL/SQL 🔹 Cross-Platform & Mobile Apps: Flutter, Firebase, Native integrations, Swift 🔹 Software Architecture & Optimization: Scalable, secure, and maintainable solutions Why work with me? ✅ End-to-End Development: From architecture to deployment, I cover the entire lifecycle. ✅ Scalable & Secure Solutions: Optimized for performance, reliability, and maintainability. ✅ Problem-Solver: I don’t just write code—I create efficient solutions tailored to business needs. Let’s bring your project to the next level! 🚀 Feel free to reach out to discuss your requirements.Java
DartFull-Stack DevelopmentAPI DevelopmentSpring BootREST APIMobile App DevelopmentFlutterFlowFlutter StackVisual Basic for ApplicationsFlutterAWS DevelopmentSQLPython - $35 hourly
- 0.0/5
- (0 jobs)
A java developer with 10 years of experience. worked with java, angular, hibernate and elastic search integrationJava
Microsoft SQL ServerHibernateElasticsearchAngular - $40 hourly
- 0.0/5
- (0 jobs)
I’m a passionate and detail-oriented DevOps Engineer with 6+ years of experience working in leading IT companies. Specializing in Kubernetes, I’ve successfully implemented and managed Kubernetes environments across a variety of setups, including on-premises, private cloud (OpenStack-based), and VMware platforms. With a Master’s degree in Electrical Engineering and Computing, I bring a strong technical foundation, combined with a collaborative approach gained from working in diverse, multicultural teams across two countries. I’m well-versed in delivering tailored technical solutions, leading workshops, and working closely with clients to meet their unique needs. Let’s work together to bring your projects to life with seamless DevOps solutions!Java
Computing & NetworkingOpenStackVMWarePythonYAMLBash ProgrammingGrafanaPrometheusCI/CDDockerLinux System AdministrationKubernetesCommunication SkillsProblem Solving - $70 hourly
- 0.0/5
- (0 jobs)
I am a passionate software developer with multiple years of professional experience and an insatiable curiosity for technology and design. My enthusiasm for programming started early and developed into an expertise in Java and the Spring Framework. With the drive to constantly learn new things, I have acquired a broad knowledge of various technologies. My work is characterized by attention to detail and high quality standards. I firmly believe that excellent design and clean code architecture are the basis for successful software projects. Thanks to my experience in software design, methodology and CI/CD tools, I am able to design seamless and efficient development and deployment processes. I bring not only my technical knowledge to projects, but also my creative energy and ability to solve complex problems. I am always looking for new challenges to further develop my skills and create innovative solutions that offer real added value.Java
Software ArchitectureSpring BootWeb DevelopmentScriptWeb Application - $20 hourly
- 4.0/5
- (1 job)
Hi my name is Leon! I'm a developer that is specializing in c/cpp right now aswell as embedded systems (stm32)Java
Spring BootFront-End DevelopmentBack-End DevelopmentNatural Language ProcessingTensorFlowPythonRaspberry PiWindows App DevelopmentCC++GitLinuxmacOSLinux System Administration - $42 hourly
- 0.0/5
- (0 jobs)
Experienced IT professional specializing in full-stack development and system administration. Skilled in backend and frontend development, database management, and automation. Strong background in media informatics and problem-solving, with a focus on delivering efficient, practical solutions.Java
Scripts & UtilitiesWeb DevelopmentWeb ApplicationSoftware DevelopmentPythonSQLVue.jsPHPJavaScript - $5 hourly
- 0.0/5
- (0 jobs)
Hi, I'm Nikita. I'm living in Germany and working as frontend developer. My skills: JavaScript React TypeScript HTML5 CSS ·Java
Neos FlowExpressJSNode.jsPHPMongoDBMariaDBAngularCSS 3HTML5TypeScriptReactJavaScript - $22 hourly
- 0.0/5
- (0 jobs)
A specialized full stack developer adept in working with both frontend and backend development and with capacities to deal with multiple programming languages. Graduated from the National Technological University, the USA, not only I am equipped with a promising skill-set but also have over a decade of experience in building professional solutions, experience in structuring, developing and implementing interactive web products. Throughout my working carreer and a long-standing background I have gained an immense experience of working with HTML5 by using markup, with CSS3, CSS and C++. I have in-depth knowledge of Java, JavaScript frameworks, as well as PHP, Python and Perl, WIX, Wordpress, Shopify, let alone the fact that I have a huge experience in working with both Ruby and Database storage (SQL, MySQL, MongoDB). As a full steck developer I am also skilled in working with MEAN such as: MongoDB(for the Database),Express.js(for the Web framework), AngularJS(for the frontend framework), NodeJs(for the server platform). I also have a creative vision and design skills: UI/UX, Illustration, Adobe Photoshop, Figma, InVision Studio, Sketch and SVG Animation. So, I will accept useful and diverting cooperations and do my best.Java
Node.jsReactPythonAngularNext.jsJavaScriptPHPHTML - $12 hourly
- 0.0/5
- (0 jobs)
Hi, I’m Giovanni, a dedicated professional passionate about customer service and office efficiency. With solid experience in customer support, effective communication, and problem-solving, I excel at understanding people's needs and providing solutions with empathy and precision. I have advanced skills in the Office suite (Word, Excel, PowerPoint, etc.) and knowledge of agile methodologies like Scrum. Additionally, my background in programming (HTML, CSS, JavaScript, SQL, Node.js, and Vue) allows me to understand technical processes and optimize digital workflows. I speak four languages: Spanish (native), English (C1), Portuguese (B2), and German (A1, continuously improving), which enables me to interact with clients from various parts of the world. Currently, I live in Germany, where I’ve learned to adapt to new environments and cultures, strengthening my communication skills and ability to integrate into international teams. If you’re looking for a proactive, solution-oriented professional with an open mindset, I’d love to work with you. Let’s connect! 🚀Java
JavaScriptSQLVue.jsCSSHTMLNode.js - $10 hourly
- 0.0/5
- (0 jobs)
I'm a teacher for german, history, geography and computer science since 2020. For a career change, I want to get into software developing. - Java entry level - communication is the keyJava
ProofreadingGeographyHistoryLanguage Studies - $30 hourly
- 0.0/5
- (0 jobs)
Hello! I'm a versatile software engineer and web developer with a proven track record of delivering high-quality solutions across diverse industries. My expertise spans web development, software engineering, and Linux systems administration. Here's what I bring to the table: Web Design & Development I specialize in designing and developing user-friendly, responsive websites tailored to your specific needs. Software Engineering Expertise Currently working at Deutsche Luft und Raumfahrt, I manage GitLab, pipelines, and package creation, ensuring smooth software development workflows. I am also proficient in Git, GitHub, and CI/CD processes, enabling efficient version control and automated deployment pipelines. Additionally, I have experience setting up and maintaining test environments, including utilizing frameworks like unittest to ensure code quality and reliability. Scientific Computing With a degree in physics, I specialize in implementing well-known algorithms for specific problems and applying them efficiently where needed. I can assist with smaller tasks from academic courses or develop simulations that are carefully designed to stay within the performance limits of a standard personal computer, as I do not have access to supercomputers.. Application Development I build robust applications using Python, Java, and Swift (Xcode). From desktop to mobile, I can create reliable and scalable solutions for all operating systems. When needed, I also write Linux kernel modules in a limited scope to optimize processes and enhance efficiency based on the specific requirements of a given situation. Linux Administration With years of experience managing Linux systems, I handle everything from system configuration to server optimization, with a primary focus on Debian-based distributions. If you're looking for a detail-oriented and reliable professional to bring your project to life, let's connect! I'm excited to help you achieve your goals, and I always look forward to learning about new use cases and challenges brought to me by my clients.Java
JuliaComputational Fluid DynamicsPhysical ScienceDockerCEmbedded LinuxBash ProgrammingLinuxGitHubGitLabPythonDevOps - $11 hourly
- 0.0/5
- (0 jobs)
I'm a Junior Developer collecting experience. This is my main aim. Small projects to create a resume are desired.Java
MySQLCSSHTML Want to browse more freelancers?
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