Developed a treatment documentation software for physiotherapy, primarily focusing on backend development, microservices using SAGAS pattern, non-SQL databases, scaling, and ensuring proper concurrency handling. Features included EMR documentation, scheduling, and payments. Actively worked on changing a legacy monolithic application to a microservices architecture. Microservices were containerized in Docker for developer environments and Kubernetes for production, communicating via RabbitMQ and direct calls. Performed extensive refactoring following SOLID, KISS, DRY, Design Patterns, and Hexagonal Architecture, with all refactorings protected by Feature Flips. Tuned the database structure for a high-traffic web application, improving query execution time by 50% through efficient indexing and query restructuring. Developed a desktop application from scratch for sending encrypted emails with subject, body, and attachments, including key creation for encryption and several Outlook add-ins. Developed an Association Management Solution with features like Membership Management, Event and Exhibit Management, Committees and Chapters, E-marketing, and surveys. Forecasted and provided technical estimations for projects while balancing schedule, time, and quality. Defined and evaluated technical solutions, architectures, and designs. Ensured proper communication among microservices and handled concurrency. Defined maturity guidelines for designs, coding, and code reviews. Implemented new functionalities and fixed bugs. Ensured all new code was under Feature Flip. Refactored legacy code using various techniques and design patterns to improve maintainability. Coached, served as Tech Lead, and Scrum Master for an Agile team. In charge of the training program. Stack: AWS, ASP.NET, C#, Bootstrap, Dapper and SQL Server 2012, Java, PHP, ExtJS, JavaScript and MySQL, Docker, MongoDB, Elasticsearch, Solr, RabbitMQ, PHPUnit, NUnit, Kibana, Nagios, Mailhog. For Cryptography email application: C#, WPF, WCF, Entity Framework, and SQL Server 2012, NUnit. For Association Management Solution: ASP.NET, C#, Bootstrap, Entity Framework and SQL Server 2012, NUnit.