Full-Stack Developer, DevOps Engineer: .Net, C#, C++, Angular, React, Java, JavaScript, TypeScript, Python, Azure, AWS, GitHub...

5/2018 – 8/2022

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ASP.NET, C#.NET, Web API, MVC, WinForms: Developed robust web applications and services using ASP.NET Core 6.0 and C#.NET, Spearheaded the development of high-performance full-stack applications using .NET 8, and Node.js, reducing page load times by 30%. Implemented Web API service and utilized MVC and WinForms for efficient UI/UX design.
• Angular (Custom module, Custom component, Redux, service worker, PWA), RxJs, TypeScript, Next.js and JavaScript: Built dynamic single page applications with Angular, incorporating custom modules and components. Utilized Redux for state management and implemented service workers and PWA features for enhanced user experiences. Developed backend services with Node.js and TypeScript. Led a cross-functional team in the development of modern PWA applications with Angular, React, and Redux, driving user engagement up by 25%.
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JAVA, Oracle, DB management, Spring Boot, Kotlin, Eclipse IDE, JetPack: Created scalable backend services using Java and Spring Boot.
Managed databases with Oracle, and enhanced development with Kotlin and Eclipse IDE, leveraging JetPack for Android development.
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React with MongoDB: Developed interactive frontend applications using React, integrated with MongoDB for efficient NoSQL database management.
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Experienced in building scalable and efficient backend applications using Node.js. Proficient in handling asynchronous programming, working with databases, and implementing RESTful APIs, Nest.js
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DevOps Engineering, Design Patterns: Implemented DevOps practices to streamline development and deployment processes. Applied design patterns to ensure code reusability and maintainability. Managed the CI/CD pipeline using Azure DevOps, reducing deployment times by 40% through automation.
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Proficient in designing and implementing complex GraphQL schemas that effectively model intricate data relationships, with demonstrated expertise across the full API development lifecycle, including efficient resolver development, ensuring optimal data retrieval, minimized over-fetching, performance optimization, and robust security hardening for scalable data access solutions.
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Git, Jira, Confluence, TFS, Agile (Scrum), Azure DevOps: Utilized Git for version control, Jira and Confluence for project management, and
TFS for continuous integration and deployment within Agile (Scrum) methodologies. Leveraged Azure DevOps for efficient project delivery.
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Microservices based on Docker containers, Kubernetes, Helm, Terraform: Skilled in designing, developing, and deploying microservices using Docker containers. Leveraged Terraform for infrastructure as code, Kubernetes for container orchestration, and Helm for package management. Utilized Jenkins to automate CI/CD pipelines, ensuring efficient and reliable software delivery.
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Kafka, RabbitMQ, SignalR, Redis: Implemented message driven architectures with Kafka and RabbitMQ. Developed and deployed a distributed, event-driven architecture that leveraged Redis Pub/Sub for real-time data distribution to SignalR clients, ensuring seamless and scalable bi-directional communication.
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Azure Active Directory Security, JWT, Oauth: Secured applications with Azure AD, JWT and Oauth,
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SQL Server, MySQL, Oracle, MongoDB, Grafana, NoSQL: Managed and optimized relational databases (SQL Server, MySQL, Oracle) and
NoSQL databases (MongoDB). Utilized Grafana for monitoring and visualization.
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Unit test, Integration tests by XUnit, JUnit: Ensured code quality through unit tests and integration tests using XUnit and JUnit.
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Cloud, AWS Lambda, S3 Bucket, AWS ECS, AWS RDS and Software as a Service (SaaS): Deployed scalable applications in cloud using
AWS Lambda, S3 Bucket, ECS, and RDS.
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Collaborated with product owners to ensure smooth Agile development cycles, ensuring the on-time delivery of complex projects
across multiple sprints. Cooperate to create clean interfaces and simple, intuitive interactions and experiences.

.Net, .Net Framework (Microsoft), Amazon Web Services (AWS), Angular, ASP.NET, C#, Full-Stack, Java-Entwickler, Java (allg.), Mysql, React (JavaScript library), SQL

4/2016 – 5/2018

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Led the development and maintenance of scalable full-stack applications using ASP.NET Core, C#.NET, Angular, and Docker.
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WEB API based on C#.NET with SQL server and Entity framework, Optimized database management with SQL Server and NoSQL
solutions, achieving 15% faster query responses.
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REST API, OAuth, OpenAPI: Designed and implemented RESTful APIs, secured with OAuth, and documented using OpenAPI specifications.
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JAVA, Oracle, DB management, Design patterns: Leveraged Java and Oracle databases, implementing design patterns to enhance system architecture and database management. Redux for state management, and service workers for PWA functionality.
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Angular (with the Custom module, Custom component, Redux, service worker, PWA): Designed and built custom Angular components and optimizing reusability and maintaining a modular architecture.
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JavaScript, TypeScript: Utilized JavaScript and TypeScript for front-end development, ensuring efficient and maintainable code.
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AWS Lambda, S3, ECS, RDS, Google Cloud, CI/CD tools: Deployed applications using AWS services like Lambda, ECS, RDS.
Implemented CI/CD pipelines for continuous integration and deployment. Reduced cloud storage costs by 25% through optimized AWS S3 usage.
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Deep expertise in leveraging GraphQL to build flexible and maintainable APIs, fostering seamless data integration across diverse platforms
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Unit test, Integration tests by XUnit, Junit: Ensured code quality and reliability through unit tests and integration tests using XUnit and
Junit frameworks.
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Docker containers, Kubernetes orchestration, RabbitMQ, SignalR: Leveraged Docker containers for application packaging and deployment.
Utilized Kubernetes for container orchestration and management. Implemented message-driven architectures with RabbitMQ. Employed Terraform for infrastructure as code and Helm for package management. Automated CI/CD pipelines with Jenkins to ensure efficient and reliable software delivery.
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SQL, Oracle: Optimized database management with SQL Server and NoSQL solutions, achieving 15% faster query responses.
Developed and maintained complex database schemas in Oracle, implementing best practices for data integrity an performance.
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HTML5 and CSS3, Adobe XD, PHP And Xamarin: Adept at designing, developing, and deploying high-quality web and mobile applications, with a strong emphasis on user experience, functionality, and visual appeal. Demonstrates a keen ability to translate complex design Mockups into seamless, responsive, and efficient applications across various platforms
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Agile, Scrum (with Azure DevOps), Git, Jira, Confluence: Worked in Agile Scrum environments, utilizing Azure DevOps for project management, and Git, Jira, and Confluence for version control and collaboration.
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Implemented and managed robust security measures within Microsoft Azure AD, ensuring secure authentication, authorization, and access control across cloud and hybrid environments.

Amazon Web Services (AWS), Angular, ASP.NET, C#, C++, CSS (Cascading Style Sheet), HTML5, JavaScript, Python, React (JavaScript library), Scrum, Typescript

1/2013 – 3/2016

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Developed robust web applications using Asp.net, MVC, and C#, with additional performance optimizations in C++
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Built user-friendly desktop applications with WinForms, focusing on intuitive UI and seamless user experiences.
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Utilized Bootstrap to create responsive and visually appealing web designs, ensuring compatibility across devices.
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Enhanced interactivity and functionality of web applications using jQuery, streamlining client-side scripting.
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Proficient in developing dynamic web applications with a full stack consisting of PHP and Laravel for server-side functionality, and JavaScript, HTML5, CSS3, and Vue.js for interactive and efficient user interfaces.
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Designed and animated rich multimedia content using Flash, creating engaging web experiences.
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Leveraged Java for back-end development and Knockout JS for front-end MVVM architecture, enabling efficient data binding and interface updates
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Optimized deployment processes utilizing Docker and CI/CD strategies, achieving a 35% reduction in deployment errors.
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Managed back-end systems, ensuring seamless data flow and security across different frameworks and technologies.
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Proficient in Xamarin, with experience in developing cross-platform mobile applications for both iOS and Android, ensuring seamless integration and performance

ASP.NET, C#, C++, HTML, Jquery

2/2010 – 8/2012

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ASP.NET, HTML5, CSS3 Responsive Website Design. jQuery and Animation Website Design
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Planned website development, converting Mockups into usable web presence with HTML, JavaScript, AJAX, and JSON coding.
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Optimized web applications for speed, scalability and security.
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Utilized PHP & Laravel and MySQL to create dynamic content and database-driven applications.
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Customizing & editing Web CMS like WordPress and writing another CMS
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Bootstrap, Web icons, and etc.
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Highly proficient in Xamarin, with a proven track record in developing cross-platform mobile applications for iOS and Android. Demonstrates exceptional skills in seamless integration, performance optimization, and delivering user-centric solutions.
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Crafted SEO strategy and intuitive interface for site to achieve prominent rankings across top browser platforms.
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Graphic Apps Like Adobe Photoshop, Adobe Illustrator
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Teaching Photoshop Tips & Tricks

.Net, Adobe Illustrator, Adobe Photoshop, Ajax, ASP.NET, CSS-Programmierer, HTML, Jquery, Json, Laravel, Mysql, PHP, Wordpress, Xamarin