Developed Java microservices to automate data extraction and input from documents using OCR, implemented extensive integration tests, built a Vue.js frontend to control processing, and restored legacy Ranorex tests with C#.

• Microservices Development: Built a small service for data transformation and a larger one for automatic data input using OCR.
• Integration Testing: Led the effort to collect test data and implement integration tests, ensuring the OCR service produced results identical to manual input. This involved handling numerous document groups and took months of work.
• Error Detection & Fixes: Identified and corrected missing OCR field mappings during testing.
• Vue.js Frontend: Developed a simple UI to start/stop the service for automatic data processing and display OCR-extracted values with confidence scores.
• Legacy Test Maintenance: Spent two months fixing legacy Ranorex tests, writing C# code for test automation, and gaining in-depth experience with Ranorex Studio. 

Integrate live indoor vehicle tracking into an existing software system.

• Real-Time Data Handling: Implemented WebSocket and Kafka to manage high-velocity data streams for live tracking, ensuring timely updates and system responsiveness.
• Security: Enhanced security features using SSL and OAuth to safeguard user data and system access.
• User Interface: Redesigned the frontend using Angular, RxJS and NgRX, focusing on usability enhancements to improve interaction and user satisfaction.
• Mobile Application: Developed a complementary mobile app using Ionic and Capacitor, extending the tracking capabilities to mobile devices.

• Develop a cloud-based backend.

Challenges & Solutions:

• Serverless Applications: Developed and rigorously tested serverless cloud functions using Google Cloud Platform to handle scalable backend processes.
• Infrastructure Automation: Implemented Infrastructure as Code using Terraform, enabling efficient and reproducible deployments across development environments.
• Database Management: Designed and managed complex Firestore data structures to support dynamic data requirements for car search, reservations, and transactions.
• Third-Party Integration: Enhanced system integration capabilities to ensure seamless communication between the app and external middleware services.

• Develop responsive, feature-rich Angular frontends, seamlessly integrated with robust Node.js and Python backends.

Challenges & Solutions:

• User Interface Design: Developed custom Material UI themes to ensure a consistent and appealing look across all interfaces, implementing responsive designs for optimal viewing on various devices.
• Data Management: Engineered robust back-end solutions using MongoDB for data storage and Redis for caching to enhance performance; implemented Node.js and Python in a Dockerized microservices environment for scalable and efficient backend architecture.
• Search Optimization: Utilized Elasticsearch to improve indexing and search capabilities, integrating seamlessly with both internal and external APIs via OAuth and GraphQL for enhanced data access and manipulation.
• Internationalization: Implemented multi-language support to cater to a global audience, ensuring broad usability and accessibility.

• Implement a web interface for C++ software used in CBRN event management in critical military operations.

Challenges & Solutions:

• User Interface Design: Developed a robust interface using the Angular Toolkit to ensure a seamless and efficient user experience, tailored for the specific needs of CBRN event management.
• Data Management: Implemented PostgreSQL for comprehensive data handling capabilities, ensuring secure and scalable storage solutions.
• Backend Flexibility: Engineered a microservices architecture using Node.js and Express, containerized with Docker, to enhance the system's flexibility and scalability.
• Comprehensive Testing: Conducted thorough unit and end-to-end testing using Karma, Protractor, and Selenium to ensure reliability and performance under demanding conditions.

Project Portfolio Overview at Bitstars Ltd

• Enhance technological capabilities and user experiences across multiple platforms and applications, including iOS devices, location-based services, sleep tracking, and spherical video processing.

Projects:

Cross-Compilation of Java Logic for iOS Devices

• Evaluated frameworks like Apache Cordova and RoboVM to enable Java on iOS, opting for RoboVM due to its performance and compatibility.

LBGlib ? Location-Based iOS Library Development

• Developed LBGlib to support complex location-based game functionalities and secure data management.

ShleepTracker ? Sleep Quality Analysis iOS App

• Implemented unique features for multi-user recognition and data synchronization, adhering to iOS Human Interface Guidelines.

Library and Microservice for Spherical Videos

• Created a Node.js library and microservice for spherical video processing, managing infrastructure with Docker and Kubernetes.

Project Portfolio Overview at GFIU Ltd

• Develop and manage sophisticated web stores and portals.

Notable Projects:

• Chiemsee Brand: Developed the full web store for Chiemsee, a well-known apparel brand. Chiemsee brand

Pack2Go Gastronomy Supplies:

Solely created the e-commerce platform for gastronomy

supplies, enhancing customer service and order processing. Pack2Go Gastronomy supplies

Georg Roth Los Angeles:

• Implemented a complete solution for the online sale of shirts and apparel, focusing on user-friendly design and secure payment integration. Georg Roth Los Angeles Shirts & Apparel

Fairklick Software Download Shop:

• Developed a platform for software downloads, optimizing the shopping experience and digital distribution.

Hibaba Toys:

• Created an engaging and interactive online toy store to cater to a diverse demographic.

Project Portfolio Overview at Pro Office It-Solutions Ltd

• Develop .NET desktop and web applications and manage complex database systems.

Challenges & Solutions:

• Integration Complexity: Addressed challenges in integrating diverse software tools and databases by developing custom solutions in C#, VB.NET, and using advanced features of ASP.NET.

Performance Optimization:

• Improved application performance and user experience through meticulous database optimization and refining back-end coding.

User Customization:

• Implemented user-centric features in desktop and web applications to meet specific business needs, enhancing usability and efficiency.

Project Portfolio Overview at Constru Mat 2000 Ltd

• Develop company website, create specialized tools for the Accounting department, manage databases, configure network infrastructure, and provide ongoing technical support and hardware maintenance.

Challenges & Solutions:

Integrating Systems: 

• Faced challenges in integrating web applications with existing databases and network setups. 
• Overcame these by leveraging advanced programming techniques and meticulous system testing.

Database Security and Performance:

• Addressed security concerns and performance bottlenecks in database management by optimizing configurations and applying best practices in database security.

Network Reliability:

• Enhanced network reliability and scalability to meet growing business needs by implementing robust network architecture and continuous monitoring.