Mark J.

I'm a software developer with more than 9 years of experience. I can write both front-end and back-end applications, browser extensions, desktop and mobile apps. In my career I was working with many different technologies: - JavaScript is the language that I think I'm an expert in. This is some tags: ReactJS(redux, redux-saga, code-splitting, CRA, redux-form, react-select, JEST, etc..), NodeJS(AWS Lambda, REST API's), NPM, Webpack, SocketIO. It what I'm focused on for the last 3 years working through Upwork; - I have a lot of experience in web development. I'm familiar with cutting-edge CSS and HTML features. Complex animations, D&D, data visualizations with SVG or Canvas are not a problem at all; - I have a strong knowledge of relational databases(PostgreSQL, MySQL, MSSQL). I know how to create a good database structure. Have an experience of optimizing complex SQL queries. I also have some experience working with no-sql databases like DynamoDB and Mongo; - I was working as a team lead(2-4 developers) so I'm familiar with such apps as YouTrack, JIRA, Trello and for sure with Github. I can help you with creating requirements, breaking it down to a tasks, making code reviews, performing tech interviews with developers and so on. - I have a lot of experience working with .NET in the past(ASP.NET MVC, ASP.NET vNext, WinForms). In my work I was using such things as ORM frameworks, IoC containers, multithreading; - I have some experience working with Objective-C(Cocoa, native iOS and MacOS apps); - I was learning Computer Science in university, so I know base data-structures, algorithms an so on. I care about code architecture. I love hard challenges, clean code and learning new things. I'm good at keeping on track and getting work done in time and with good quality.