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Avatarul utilizatorului

Roman K.

@topcreator100

monthly-level-four.svg
5,0
13
6,1
6,1
92%

Full Stack Developer

$35 USD/oră
Steagul
Ukraine (7:32 a.m.)
S-a alăturat pe aprilie 16, 2021
$35 USD/oră
High Speed, User Friendly, 100% Completeness! Customer's Satisfy is my happiness! My background as a Web Developer, along with my education in Computer Science, have allowed me to attain a strong foundation of technical skills. I am a Full Stack Development Expert and work on Java(Spring MVC, JSF, Vaadin, JavaFX, J2EE/Java EE, JSP, Servlets), JavaScript(React.js, Vue.js, Angular, Node.js/Express.js, Sails.js), Python(Flask, Django), and PHP (Laravel, CodeIgniter, Symfony, CakePHP). Here are my core skills: 1. Front-end - core web: HTML5, CSS3, JavaScript, JSON/XML - JavaScript Frameworks: React.js/Redux, Vue.js/Vuex, Angular, TypeScript, Next.js, Nuxt.js, Styled Component - JavaScript Libraries: jQuery, DOJO toolkit, D3.js, Pixi.js, Three.js, [login to view URL], AOS, Chart.js, Popper.js, etc - UI Frameworks: Bootstrap, Material UI, Ant Design, Semantic UI, Vuetify, Element, etc 2. Back-end - JavaScript: Node.js/Express.js, Sails.js and Koa.js - Python: Flask, Django - PHP: Custom PHP, Laravel and CodeIgniter, Symfony, CakePHP - Database: MongoDB, MySQL, PostgreSQL and SQLite3 Here is my experience: - Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model - Thorough understanding of React.js, Vue.js and their core principles - Experience with popular React.js, Vue.js workflows (such as Flux, Redux or Vuex) - Knowledge of Back-end development on Node.js(Express.js, Sails.js and Koa2.js), Python(Flask, Django) - Experience with Database programming and management(MongoDB, MySQL, PostgreSQL) - Familiarity with newer specifications of EcmaScript - Experience with data structure libraries (e.g., Immutable.js) - Familiarity with RESTful APIs - Knowledge of modern authorization mechanisms, such as JSON Web Token - Familiarity with modern front-end build pipelines and tools - Experience with common front-end development tools such as Babel, Webpack, NPM, etc. - Ability to understand business requirements and translate them into technical requirements - A knack for benchmarking and optimization - Familiarity with code versioning tools {{such as Git, SVN, and Mercurial}}
Verificări
La timp
100 %
Conform bugetului
100 %
Rata de acceptare
88 %
Rata de angajare repetată
20 %

Portfoliu

Portfoliu

11664461
11664455
11664408
11664461
11664455
11664408
Modificările au fost salvate
5.0 · 13 Reviews
Recenzii
D
Great to work with. Really experienced developer. Many thanks for the collabortion!
Daniel H.
@danielehirt
Steagul
Nänikon, Switzerland
23 ore în urmă
Trimite
Avatarul utilizatorului
Roman did an exceptional job testing my app. He was tasked with following different steps in the user journey and accomplishing key tasks on the platform, he completed the tasks much faster than the other developers to whom I assigned the same job. He was the fastest, most dedicated, and most communicative developer I worked with. If you're looking for a serious and professional developer with years of expertise and always looking to overdeliver to clients then look no further and hire Roman.
Louis M.
@LouisMille
Steagul
Péronne-en-Mélantois, France
22 zile în urmă
Trimite
L
All was OK. Nice work, good communication.
Lucas B.
@LucasBal33
Steagul
, France
26 zile în urmă
Trimite
M
Load template $200 USD
Great work. Very skilled developer.
Jason M.
@mccloyjason9999
Steagul
San Ysidro, United States
2 luni în urmă
Trimite
A
Other team members struggled giving him access at first. Took about a week (into a 3 week project). He requested more money for the project after agreeing to it and was given access. Then asked again for bonus after completing. Then said he had personal issues/matters and couldn't complete the project. So I'm rating based on that though I can't rate his expertise as I haven't seen it.
Anthony K.
@akaii123
Steagul
Toronto, Lebanon
2 luni în urmă
Trimite
Experiență
Senior Frontend Developer
aug., 2020 - dec., 2023
3 ani, 4 luni
Dasera, CA, United States
aug., 2020 - dec., 2023
3 ani, 4 luni
Set up Next.js projects, including configuring dependencies, project structure, and environment variables. Developed reusable and modular UI components using React. Implemented state management solutions like Redux and React Context API for managing application-wide state and data flow. Utilized Next.js features for server-side rendering (SSR) and static site generation (SSG) to improve performance, SEO, and user experience.
aug., 2020 - dec., 2023
3 ani, 4 luni
Senior Web Developer
mar., 2017 - mai, 2021
4 ani, 2 luni
RockPeaks, Toronto, Canada
mar., 2017 - mai, 2021
4 ani, 2 luni
I worked remotely for RockPeaks and MusicPeaks. While working for RockPeaks and MusicPeaks, I gained experience in building React projects. React.js, Next.js, TypeScript, Styled Components, GraphQL, Ant Design, Material UI, React Bootstrap, Web3.js, etc
mar., 2017 - mai, 2021
4 ani, 2 luni
Frontend and Backend Developer
mar., 2015 - feb., 2017
1 an, 11 luni
Medici Bank, San Juan, United States
mar., 2015 - feb., 2017
1 an, 11 luni
I worked remotely for Medici Bank International LLC. While working for Medici Bank, I gained experience with Node.js, Sails.js, jQuery, Bootstrap, CSS3, etc.
mar., 2015 - feb., 2017
1 an, 11 luni
Educație
Kyiv National Economics University
2005 - 2009
4 ani
Bachelor
Steagul
Ukraine
2005 - 2009
4 ani
Certificări
P
Preferred Freelancer Program SLA
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