Konstantin R.
Rating
Language proficiency level
CV
Welcome to RTS Developers!
We specialize in creating high-quality websites on WordPress and React.js that help your business grow. Professionalism and innovation are our paths to your success!
Our services:
Today, our team offers a full range of web development services: from domain purchase and design creation to website integration on WordPress/React.js with basic SEO setup and comprehensive ongoing support and maintenance.
We use modern technologies, integrate payment systems, and work with various APIs including Telegram, WhatsApp, Stripe, FlexMLS, and more. Our team also specializes in design development and professional copywriting to ensure your website looks and functions perfectly.
Website development on WordPress and Next.js (React.js framework):
1. E-commerce websites
- Integration with WooCommerce and setup of user account dashboard
- Connecting payment systems (Stripe, PayPal, Fondy, Liqpay, Wayforpay, and others)
- Integration with CRM systems
- Custom design (on request)
- Basic SEO setup
- Shopping cart and checkout integration, user account setup, and email configuration
2. Multipage websites
3. Multilingual websites
4. Corporate websites
5. Business card website
- Creation of a stylish and informative representation of your business
- Integration of Google Maps and contact forms
- Basic SEO and analytics setup
6. Landing page (one-page website)
- Design and development of a compelling one-page layout
- Integration of lead capture forms and call-to-action elements
- Basic SEO and performance optimization
7. Blog
8. News Portals
9. Portfolio Websites
10. Booking and Reservation Sites
11. Educational Platforms and Course Sites (LMS)
12. Nonprofit and Charitable Sites
13. Custom Business Websites
14. WordPress Theme Development
Advantages of Working with Us:
1. Detailed Technical Specifications: We create thorough technical specifications to ensure every aspect of your project is clearly defined.
2. On-Time Delivery: We adhere to deadlines, ensuring that your project is completed as scheduled.
3. Custom Creative Design: Our designs are tailored to your needs, including animations, imagery, and functional elements, to meet any level of complexity.
4. High-Quality Content: We provide professional copywriting and basic SEO to enhance the quality and effectiveness of your content.
5. Responsive and Cross-Browser Compatibility: Our websites are designed to be fully responsive and compatible with all devices and operating systems (Windows, macOS, Android, iOS).
6. Post-Launch Support: We offer comprehensive support and maintenance after the project is completed to ensure your site runs smoothly.
7. Flexibility and 24/7 Support: We provide flexible solutions and around-the-clock support to meet your needs anytime.
Technologies We Use:
PHP, WordPress, React.js, Next.js, JavaScript, SaSS, jQuery, CSS3/HTML5, Git, GitHub, Gulp, Webpack, Flex-box, Grid
Project Start:
1. Choosing CMS or Framework: Select between WordPress or Next.js for your project.
2. Technical Specification (TS): Draft a detailed technical specification.
3. Custom Design Development: Create a unique design or work with your existing design.
4. Copywriting: Provide professional copywriting services or work with your pre-existing content.
5. Project Development: Initiate the development phase.
6. Project Management: Continuous project management and regular communication with our team.
7. Testing and Handover: Perform thorough testing and deliver the project.
8. Revisions: Implement necessary revisions free of charge.
Additional Services:
- Technical Specification Preparation: Craft a detailed project brief and requirements.
- Custom Site Design: Create a bespoke site design, including logos, banners, and SEO elements.
- Site Audit and Testing: Conduct comprehensive site audits and functional testing.
- Site Migration: Transfer live sites to new hosting or domains.
- Tilda to WordPress Migration: Migrate sites from Tilda to WordPress.
- Builder-Based Sites: Develop sites using builders like Elementor PRO.
- Domain and Server Setup: Purchase domains and configure hosting (shared, VPS, dedicated).
- SSL Certificate Integration: Acquire and install SSL certificates for secure connections.
- Post-Launch Support: Provide ongoing support after site launch (discussed individually).
- Basic SEO Setup: Implement fundamental SEO practices.
- Payment System Integration: Connect various payment systems (US, Europe, Ukraine).
- Email Template Design: Create responsive email templates for mass mailing.
- WordPress Theme Integration: Integrate custom designs into WordPress.
- Design-Based Development: Work with your design files from Figma, Photoshop, Sketch, Zeplin, Adobe XD, Adobe Illustrator.
- Google Analytics Setup: Set up and configure Google Analytics for tracking and reporting.
If you need any further details or have specific requirements, feel free to reach out!
About Us:
More of our latest work in the portfolio
Reviews about our work from clients
Website Warranty:
Before delivering the final result, we conduct a comprehensive inspection of your website based on a detailed checklist derived from the project specifications. If any issues are identified after delivery, we will correct them free of charge. Additionally, we offer ongoing support for your website, which can be discussed and tailored to your specific needs.
Every detail is important to us. Our main goal is to ensure quality and complete customer satisfaction!
Skills and abilities
Programming
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Content Management Systems
from 16 USD for hour
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Databases & SQL
from 12 USD for hour
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HTML & CSS
from 12 USD for hour
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Javascript and Typescript
from 12 USD for hour
- PHP
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Web Programming
from 12 USD for hour
Services
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Online Stores & E-commerce
from 12 USD for hour
- Payment Systems Integration
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Tuition
from 18 USD for hour
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Website Development
from 18 USD for hour
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Website Maintenance
from 18 USD for hour
Portfolio
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800 USD Website for Selling Luxury Real Estate in Mexico
Website DevelopmentDevelopment of a website for selling luxury real estate in Mexico. The site includes the integration and configuration of the FlexMLS API via the sparkapi platform. Custom filters for the real estate page have been developed. Integration of the Google Maps API has been implemented in conjunction with FlexMLS real estate listings.
#PHP #WordPress #API #GoogleMap #jQuery #Sass #CSS(.sass) #JavaScript #Flexbox #Flex/Grid
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350 USD Mobile Site Builder
HTML & CSSDevelopment of layout for a no-code mobile website builder. The layout is responsive (flexible) and cross-browser for all devices, and consists of 6 pages.
#HTML-layout #HTML/HTML5 #html-design #jquery #Javascript #sass #CSS(.saas)
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800 USD Car Painting Shop ACC
Online Stores & E-commerceDevelopment of the online store for the brand Auto Chemical Colors (ACC) based on WordPress + Woocommerce. The design of the castomny themes individually under design. The content part of the site is realised on ACF for convenient editing of the content of the site. Connecting the Liqpay Payment System and Delivery through New Mail
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900 USD TinaValerdi Wedding Dress Shop
Online Stores & E-commerceInternet store for TinaValerdi for the European and U.S. market
Developing on the basis of an individual subject written under project. Products filtering, payment system connectivity Stripe, PayPal
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450 USD Website of Kyiv University of Culture
Website DevelopmentWebsite development for the Kyiv University of Culture on the basis of the caston theme + ACF PRO for the content part. The animations of the site are written on a pure javascript individually under the project.
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450 USD The Wings.Tours tourist website
Website DevelopmentDevelopment of tourist travel site on the basis of Elementor PRO
Additional development of slider modules for multiple use on the site
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800 USD The Internet store of children's furniture Architoyz
Online Stores & E-commerceDevelopment of the internet store of children's furniture, with a caston functional filtration for the European and U.S. markets - Architoyz
Products cast filter development, funding payment systems, PayPal, Stripe
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900 USD The Internet shop of photography
Website Development#Wordpress #woocommerce #elementor #jquery #Javascript #PHP #flexbox #grid #payment #paypal #acf #flexbox #grid #HTML/HTML5 #CSS/CSS3 #Gulp
Photo shop for PixM
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850 USD Internet shop of UFM
Website Development#Wordpress #woocommerce #elementor #jquery #Javascript #PHP #flexbox #grid #payment #paypal #acf #HTML/HTML5 #CSS/CSS3 #Gulp
WordPress CMS for the UFM Mould Manufacturing Company
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200 USD Online English Language Course Lingo
Website Development#Wordpress #woocommerce #elementor #jquery #Javascript #PHP #flexbox #grid #HTML/HTML5 #CSS/CSS3 #Gulp
Landing Wire for Lingo (Online English Course)
WordPress with Elementor and ACF
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150 USD Landing of the University of Haifa
Website Development#Wordpress #woocommerce #elementor #jquery #Javascript #PHP #jquery #Javascript #PHP #flexbox #grid #HTML/HTML5 #CSS/CSS3 #Gulp
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100 USD Landing of PC Cards
Website Development#Wordpress #woocommerce #elementor #jquery #Javascript #PHP #jquery #Javascript #PHP #flexbox #grid #HTML/HTML5 #CSS/CSS3 #Gulp
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700 USD The online store “Fotoprokat24”
HTML & CSS#Wordpress #woocommerce #elementor #jquery #Javascript #PHP #flexbox #grid #HTML/HTML5 #CSS/CSS3 #Gulp
Online shop for rental and sale of photo-inventory - "Fotoprokat24"
… Adaptive, responsive layer, multi-page internet shop without landing on CMS, indicative periods of 5-7 days, at the cost of $350. Additional possibility to land the site on WordPress and connect the payment of goods.
Additional costs and deadlines are discussed individually.
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100 USD Landingpage for Oxorio
HTML & CSSAdaptive, resin, responsive layer for the security service company - "Funiro"
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Landing page store for car sale MonzaMTS
HTML & CSSResin, adaptive, resonating landing page line of the car store "MonzaMTS"
Reviews and compliments on completed projects 35
18 December 2025
700 USD
Expansion and finalization of the financial comparator
Further cooperation proceeds excellently.
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1 September 2025
946 USD
STAGE II – Key functionalities of the financial comparator kontomistrz.pl
Working with Konstantin is a pure pleasure. The website of my financial comparison tool was done professionally and according to expectations. Konstantin makes all the corrections promptly, always responds quickly, and pays attention to every detail. I am very satisfied with the final result – the project meets my requirements both technically and visually. I can wholeheartedly recommend Konstantin to anyone looking for a solid and reliable developer.
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6 August 2025
699 USD
Implementation of kontomistrz.pl website – financial comparison tool (WordPress + ACF + Gutenberg)
Collaboration with Konstantin is very smooth and professional. Excellent contact, quick response to reported corrections, and great involvement in the project. All tasks are carried out according to arrangements, and additionally Konstantin takes the initiative himself, proposing relevant improvements. I definitely recommend – a reliable and trustworthy contractor.
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13 July 2025
41 USD
Figma premium
I highly recommend, the cooperation is professional. That's exactly what I expected
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8 July 2025
226 USD
Website development on WordPress
Thank you, all requirements are met.
6 June 2025
521 USD
Development of a WordPress website for a corporate site
I sincerely recommend Konstantin as a specialist. I will return again. Communication at the highest level. Speed of work and quality are also top-notch
19 May 2025
271 USD
Online store website.
If you come across Konstantin as a performer, choose without hesitation. He really understands what he's doing and why. He convinced me to do better than I was going to and executed everything very well. The best impression of cooperation.
12 May 2025
361 USD
WordPress website development
All is good, I recommend for cooperation
25 April 2025
300 USD
Step-by-step execution of the project (Finalization and launch of the website)
I am very satisfied. The project was completed with high quality and on time. Konstantin demonstrated a high level of professionalism, attention to detail, and a responsible attitude towards the task. Communication was prompt and clear throughout the entire collaboration period. I am completely satisfied with the result. I recommend for collaboration!
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I want to express my gratitude to the performer for the excellent work and high level of professionalism. Always in touch, responsive, adequately and calmly reacts to changes, even if they appear after the tasks have been approved. It is clear that the person is interested in the result — the work is constantly moving forward, there is positive dynamics, despite the long duration of the project.
I especially want to note that the performer does not just create the website — he helps with the implementation of the design, gives recommendations, and makes quality layout. This is strongly felt in the attention to detail and visual design.
The project was completed at the level of a serious agency, not a freelancer — this surprised and pleased me. I am very satisfied with the result and will definitely continue the collaboration. I definitely recommend!
16 April 2025
226 USD
Phased implementation of the project (functional part of the website)
Thank you for the quality implementation of the functional part of the project. All main modules were implemented according to the task, taking into account the wishes regarding the logic of the website's operation. I liked the communication, the speed of response to edits, and the willingness to flexibly adapt solutions during the development process.
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7 April 2025
226 USD
Phased execution of the project (Technical Specification + design)
I am 100% satisfied with the collaboration. The first stage of the project — design development — was completed with quality, creativity, and taking into account all wishes. Communication was easy and productive.
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10 February 2025
226 USD
Make a website
⭐ Kostyantyn is a true professional! The work was done with quality, on time, and taking into account all wishes. Thank you!
20 January 2025
194 USD
Landing page development
I am completely satisfied with the collaboration, the work was done efficiently and on time.
16 October 2024
113 USD
Website layout on WordPress
We contacted Konstantin with a project for developing a landing page (based on a mockup already prepared by our designer) and were very satisfied with the result.
What we would like to highlight the most:
1. Professionalism
Not only the approach to work but also the support with the difficulties we faced even at a basic level due to a lack of knowledge and experience. In areas where we were unsure, Konstantin helped set things up and even explained what was needed and why. Thank you very much for your patience and willingness to explain technical aspects!
2. Speed of work
We were pleasantly surprised by the speed of project execution. The main work was completed in about 5 days, after which a few more days were spent on clarifications and adjustments. As a result, within a week we received a fully functional website, as stated in the initial project discussion.
3. Quality of execution
We already had a page mockup developed in advance, based on which Konstantin developed the site. After minor adjustments, the finished landing page fully matched the mockup. Thus, the quality of work and attention to detail were at the highest level.
4. Flexibility
It is worth noting that he adequately responded to our edits and requests, even if some of them were somewhat picky. Because of this, working with him was comfortable.
So we recommend reaching out to Konstantin as a reliable and qualified developer)
Personally, we are also planning further collaboration on landing page development.
22 November 2023
338 USD
Website with Wordpreess + WooCommerce
I am pleased with the result, I recommend cooperation!
10 November 2023
271 USD
Developing a website of coupon
As always, it is wonderful! Thank you !
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28 October 2023
16 USD
Listing of pages from Figma to Elementor
Constantine has done the task well. We work further
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26 October 2023
90 USD
Transfer of the site from Tilda to WordPress
Thank you ! Everything is done properly and timely. Pleasant and easy communication.
22 October 2023
232 USD
Create a simple blog in WordPress
The work with Constantine was at the highest level.
Pleasant communication, Constantine was available at any time. All amendments have been corrected and the wishes have been taken into account.
The project came out as it was thought.
If there is a need for help again with the creation of websites, I will contact Constantine.
18 October 2023
147 USD
4 Sites on Vodafone
Well, we’re not working for the first time.
6 October 2023
338 USD
Create a wordpress site according to a finished project
Some moments that were not provided in the design - were corrected for free, operational output to the contact, in principle loyal people. If there is a mistake, it can be corrected without any questions.
2 October 2023
180 USD
Create 5 WordPress-based websites
Everything is great. We work further
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1 September 2023
338 USD
Internet shop for women’s clothes
Constantine studied all the wishes on the project and quickly bring the project to the desired result.
Thank you for your attention and excellent communication! I’m sure I’m going to deal with new projects!
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| Response review
19 August 2023
68 USD
Create a Casino Offer on WordPress
Excellent adequate specialist, quickly and qualitatively done the work, with the appearance of doping. Working moments quickly resolved questions. I recommend it as a reliable skilled specialist.
10 August 2023
90 USD
Correction of the website to WordPress
Thank you for work! A very sensitive and communicative specialist. I am satisfied with cooperation.
21 July 2023
406 USD
Website development + integration with strike
The performers are pleased and will continue to work together!
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26 June 2023
180 USD
Enter changes to design + add new fields to the page
The work is done according to the
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21 June 2023
113 USD
Сайт НЕ з нуля WP
Everything that was placed before the executive was done.
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3 June 2023
338 USD
Создание сайта
Fully satisfied with the work, all the conditions are fulfilled quality and without delay!
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23 May 2023
141 USD
Turn the interior page to the wordpress in the image design
Constantine was responsible and fulfilled every task by the project. Always in contact. I will continue the collaboration.
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12 May 2023
180 USD
Create according to the design in Figma main page in WordPress
performed greatly. Designed in Figma. All directions were taken into account. Always in contact. Thank you greatly.
4 May 2023
180 USD
Regional news website
Everything is great, the execution is responsible for the work. We will work further!
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| Response review
16 April 2023
90 USD
Creating a landing page
The work was done quickly, I recommend the work!
27 December 2022
90 USD
Landing for the sale of generators
Everything at a higher level! It was done in time, as it was.
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Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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WordPress site for manufacturing services: SEO, applications, portfolio, cost estimation
609 USD
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Refinement of the website on WP
226 USD
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Italy Ally infrastructure solution
226 USD
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Mass mailing Instagram
226 USD
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Integration of funds
16 USD
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Expansion and finalization of the financial comparator
700 USD
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Create 3 landing pages for a product
271 USD
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Page layout on ACF according to the design
180 USD
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Development of a template on WordPress
609 USD
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Work on creating the Lady Dance website
426 USD
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