Sherry B

Senior Software Engineer

Fiverr • Freiberufler

May 2022 - Present • 4 yrs 2 mos

As a freelance Senior Software Engineer, I have delivered complete software solutions for clients worldwide through platforms like Fiverr and Upwork. I led the development of a new e-commerce platform using ASP.NET Core MVC and React.js, Next.js, which improved page load times by 40% compared to the client's previous solution. I architected and maintained RESTful Web APIs to support mobile applications and third-party integrations, ensuring secure data exchange and reliable performance. One of my key achievements was migrating a legacy ASP.NET Web Forms application to modern ASP.NET Core, which enhanced security, improved maintainability and reduced server costs by 15%. I built a complete career and technical education portal using Next.js with MySQL database, featuring multi-role login, school registration, activity management and real-time chat for student-school communication. I also developed a live auction platform with .NET backend APIs and a separate Node.js WebSocket server for real-time bidding. Additionally, I created a complete clinic management system with patient queue, inventory tracking, expense reports, and financial dashboard using .NET, SQL Server and Bootstrap. I worked directly with clients to gather requirements, provided regular progress updates and delivered clean, documented code with post-launch support.

Software Engineer

Hexa • Vollzeit

Oct 2021 - Dec 2022 • 1 yr 2 mos

I developed and supported multiple ASP.NET web applications for clients in the healthcare and finance sectors. I worked directly with business owners to understand their daily challenges and translated those into technical specifications and working software. I built secure backend services using ASP.NET Core Web API and SQL Server, implementing authentication and data protection features to ensure sensitive client information remained safe. I collaborated with frontend teams using Angular to deliver full-featured applications that provided smooth user experiences across desktop and mobile devices. One of my key achievements was building a complete clinic management system that digitized patient queues, medicine inventory, expense tracking, and financial reporting. This system eliminated paper records, reduced patient waiting time, and gave the clinic owner real-time visibility into daily revenue and expenses. I worked closely with clients during requirement gathering sessions, provided regular progress updates, and ensured all deliverables met their business goals. This experience strengthened my ability to deliver reliable, secure, and scalable web applications that solve real business problems.

Junior ASP.NET Developer

COMPUTER WAREHOUSE • Vollzeit

Jun 2018 - Aug 2020 • 2 yrs 2 mos

Started as a junior developer building internal business applications for enterprise clients. Wrote clean C# code for ASP.NET Web Forms and MVC projects. Maintained SQL Server databases, wrote stored procedures and fixed bugs reported by clients. Assisted senior developers in deploying applications to production servers. Learned to translate client requirements into technical specifications. Gained hands-on experience in full development lifecycle from requirements gathering to testing and deployment.