Ershan is a service provider to securities brokerage companies and financial funds.My responsibilities included: - Designed and implemented an Online Trading application for securities brokerage companies and financial funds. The app can handle 5,000+ concurrent requests. - Optimized state management of the application, which reduced the load time from ~1.5s to ~0.6s. - Implemented new front-end design to be more user friendly, increased customer engagement 63%. - Designed and implemented a RESTful API that improved web application performance by 30% and reduced average response time by 50%. - Conducted interviews and performed code reviews. - Implemented security measures to protect the application from malicious attacks, resulting in zero security breaches over a three-year period.

My responsibilities included:- Mentored and coached junior developers, resulting in a 15% improvement in team satisfaction scores and a 20% increase in overall team productivity.- Wrote and optimized SQL queries for data retrieval and manipulation, reducing query execution time by 30% and improving overall application performance.- Using Web Worker, I increased the speed of the web application by 70%.- Collaborated with a team of developers to refactor and improve the maintainability of an existing codebase, resulting in a 40% reduction in bug- related delays and a 25% increase in overall code quality.- Optimized the performance of a web application using Angular, resulting in a 30% increase in page load times and a 20% decrease in bounce rates.

My responsibilities included:- Developed backend system components in PHP backed by MySQL Server database.- Worked with a team of 40 people, developers, QA and scrum masters.- Develop and improve a social media application with features such as friending, sharing posts, comments, uploading files, hashtags and 30+ other features.

Burhan Creative Industries Market Development Academic Company operates with the aim of developing the market for the indigenous cultural industry and technology of the country.My responsibilities included:- Led architecture, design, and development of 4+ applications, using PHP, JavaScript, and MySQL.- Converting heavy queries to lighter and more readable queries and optimizing the database for faster speed, resulting in a 75% increase in speed.- Implemented SEO structure design to optimize the website's visibility and search engine rankings.

My responsibilities included:- Developed and implemented a new reusable component library, resulting in a 20% reduction in development time and increased consistency across projects.

The Ministry of Industry, Mine and Trade is an Iranian government body responsible for the regulation and implementation of policies applicable to domestic and foreign trade.My responsibilities included:- Developed and maintained a web application using PHP, HTML, CSS, and JavaScript, resulting in a 25% increase in user engagement within the first six months.- Optimized website performance by implementing lazy loading and reducing page load times by 40%.

Started my career as a web developer.