EXPLORE


6.3
6.3
86%
$35 USD / Hour
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Ukraine (7:54 PM)
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Joined on April 16, 2021
$35 USD / Hour
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High Speed • User-Friendly • 100% Complete Solutions I build scalable, high-performance web and mobile apps with clean code, clear communication, and on-time delivery. My background in Computer Science and hands-on experience across front-end, back-end, and mobile lets me take projects from idea to production smoothly. What I Do Custom web applications & dashboards Mobile apps (iOS/Android) with a single codebase RESTful APIs & integrations Database design, performance tuning, scalability Legacy modernization & code reviews Core Tech Front-End: HTML5, CSS3, JavaScript/TypeScript · React (Redux), Vue (Vuex), Angular · Next.js, Nuxt.js · D3.js, Three.js, Chart.js · jQuery · UI kits: Bootstrap, Material UI, Ant Design, Semantic UI, Vuetify, Element Back-End (Java): Java SE/EE (Jakarta EE), Spring (Boot, MVC, Security), Hibernate/JPA · RESTful services · Tomcat, Jetty, JBoss · JSF, Vaadin, JSP/Servlets, JavaFX Back-End (Non-Java): Node.js (Express/Sails/Koa) · Python (Flask/Django) · PHP (Laravel/CodeIgniter/Symfony/CakePHP) Databases: MySQL, PostgreSQL, Oracle, MongoDB, SQLite Mobile: React Native (JS/TS), Flutter (Dart) Tooling & Standards: Git/SVN/Mercurial · Babel, Webpack, NPM · ES6+ · JSON/XML · JWT-based auth Strengths Translate business needs into robust technical solutions Performance benchmarking & optimization at scale Solid understanding of multithreading and enterprise-grade Java How We’ll Work 1. Align on scope, milestones, and success criteria 2. Iterative delivery with frequent updates 3. Thorough testing and smooth handoff/support If you want a fast, reliable developer who ships polished, production-ready solutions, let’s talk about your goals and timeline.
Verifications
On time
100%
On budget
100%
Accept rate
90%
Repeat hire rate
10%

Medici Bank

RockPeaks

RockPeaks

MusicPeaks

MusicPeaks

Medici Bank

RockPeaks

RockPeaks

MusicPeaks

MusicPeaks

Roman had really good advice.
Harald N.
@flprojects
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Heidelberg, Germany
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Worked directly with me via chat. my site was not in the best situation, Roman, was very clear, very helpful, and was able to fix my issue without delay or problems. He is highly recommend.
Andy W.
@DorothysBar
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warffum, Netherlands
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excellent work, on time delivery
Daniel Rajashekar G.
@daniel14199
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HUBBALLI-DHARWAD, India
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I am VERY disappointed with this Freelancer who has made me lost valuable time and, potentially, money. After he made a submission and proposed a price, I negotiated for twice the amount he bidded for the project. Then, once I got access to our proprietary and confidential information, he started to ask for more money, going as far as requesting milestones be created from the beginning for ALL the budget. He also refused to get into live session to discuss technical details about the work. Each time, he is providing different credentials with different names too access our sensitive information. FInally, he spent one week representing that he had completed the first task assigned only to come back later asking for the elementary details that were already provided. At that point, it was clear that he had not done any work, maybe he did not have the skills to do the work in the first place. Ultimately, I had no choice to cut my loss and move on. That leaves a VERY bad taste in my mouth!
Noel J.
@noelgino
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Ottawa, Canada
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Great service provider, serious and responsive, I recommend it to everyone, thank you.
Peter S.
@Atlantiscorpllc
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Paris, France
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Experience
Senior Frontend Developer
Aug, 2020 - Dec, 2023
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3 years, 4 months
Dasera, CA, United States
Aug, 2020 - Dec, 2023
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3 years, 4 months
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
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3 years, 4 months
Senior Web Developer
Mar, 2017 - May, 2021
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4 years, 2 months
RockPeaks, Toronto, Canada
Mar, 2017 - May, 2021
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4 years, 2 months
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 - May, 2021
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4 years, 2 months
Frontend and Backend Developer
Mar, 2015 - Feb, 2017
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1 year, 11 months
Medici Bank, San Juan, United States
Mar, 2015 - Feb, 2017
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1 year, 11 months
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
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1 year, 11 months
Education
Kyiv National Economics University
2005 - 2009
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4 years
Bachelor

Ukraine
2005 - 2009
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4 years
Certifications
P
Preferred Freelancer Program SLA