Fiodar Sazanavets is an experienced lead software engineer whose main area of expertise is Microsoft stack, which includes ASP.NET (Framework and Core), SQL Server, Azure, and various front-end technologies. Fiodar is familiar with industry-wide best practices, such as SOLID principles, software design patterns, automation testing principles (BDD and TDD) and microservices architecture. Fiodar has built his software engineering experience while working in a variety of industries, including water engineering, financial, retail, railway and defence. He has played a leading role in various projects and, as well as writing software, he gained substantial experience in architecture and design. Fiodar is an author of a number of technical books and online courses. He regularly writes about software development on his personal website, https: //scientificprogrammer.net.