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Serhii Kyselov

Offer Serhii to work on your next project.

Ukraine Kyiv, Ukraine
8 days 5 hours ago
Available for hire available for hire
79 Safe completed
1 arbitration procedure
25 days 3 hours ago
8 Clients
registered for 5 years

Rating

Successful projects
99%
Average rating
10 of 10
Rating
5018
Javascript and Typescript
PHP
62 projects
Javascript and Typescript
11 projects
Web Programming
10 projects
PHP
8 projects
HTML & CSS

Language Proficiency Level

Українська Українська: fluent
Русский Русский: advanced
English English: pre-intermediate

CV

I am a Full-stack developer with over 4 years of experience.

I have extensive experience in developing commercial applications that are currently working and bringing profit to their owners.

My main responsibilities include: creating project architecture, developing backend and frontend parts, as well as connecting various APIs.


I use the following languages, frameworks and technologies in my work:

Front-end: 

HTML/CSS,

SCSS/SASS,

Gulp.js,

Jquery,

React/React Native,

Redux,

MobX


Back-end:

Node.js/NestJs,

PHP/Laravel/Wordpress/Opencart, 

Python/Django


Other:

TypeScript,

git,

Linux,

AWS,

docker,

nginx,

apache,

CI/CD,

PostgreSQL,

MySQL,

MongoDB,

Redis,

RabbitMQ,

REST API,

GraphQL

Skills

Portfolio


Reviews and compliments on completed projects 79

20 December 2024 286 USD
Refov-Frontend-Stage5

Quality
Professionalism
Price
Availability
Terms

Everything is excellent, very good person and specialist. Highly recommended.

11 December 2024 286 USD
Refov-Frontend-Stage4

Quality
Professionalism
Price
Availability
Terms

Everything is okay, continue to workin with him.

30 November 2024 286 USD
Refov-Frontend-Stage3

Quality
Professionalism
Price
Availability
Terms

I am satisfied with the cooperation and working further with him.

Nver Baghdasaryan | Personal

25 November 2024 286 USD
Refov-Frontend-Stage2

Quality
Professionalism
Price
Availability
Terms

As usual doing a great job. I am satisfied to work with him, continuing to work.

Nver Baghdasaryan | Personal

18 November 2024 286 USD
Refov-Frontend-Stage1

Quality
Professionalism
Price
Availability
Terms

Everything looks good. Thank you for cooperation.

17 July 2024 213 USD
Employees archive

Quality
Professionalism
Price
Availability
Terms

Thank you for professionally completing the assigned task.

Sergey Povzanyuk | Personal

30 June 2024 118 USD
Amendments and additions

Quality
Professionalism
Price
Availability
Terms

Everything is done excellently as always, thank you

Sergey Povzanyuk | Personal

25 June 2024 213 USD
New strategy for counting days of stay

Quality
Professionalism
Price
Availability
Terms

Everything is done according to the brief, thank you very much for your cooperation

Sergey Povzanyuk | Personal

30 May 2024 213 USD
Resume generation in PDF

Quality
Professionalism
Price
Availability
Terms

everything is done excellently, let's continue working together

Sergey Povzanyuk | Personal

21 May 2024 118 USD
New amendments

Quality
Professionalism
Price
Availability
Terms

All tasks are completed according to the assignment, let's continue our cooperation

Sergey Povzanyuk | Personal

27 April 2024 95 USD
New menu item, functionality for sending emails

Quality
Professionalism
Price
Availability
Terms

Everything is great as always, thank you for the work

Sergey Povzanyuk | Personal

19 April 2024 95 USD
Corrections

Quality
Professionalism
Price
Availability
Terms

Amendments made, thank you for your work, let's continue our cooperation

Sergey Povzanyuk | Personal

13 April 2024 118 USD
Proof of Concept mobile messenger

Quality
Professionalism
Price
Availability
Terms

The work was done excellently, thank you very much for the creative approach

Sergey Povzanyuk | Personal

27 March 2024 118 USD
Tax Resident

Quality
Professionalism
Price
Availability
Terms

Everything is done very well, thank you for the work. Let's continue our cooperation

Sergey Povzanyuk | Personal

20 March 2024 71 USD
New Filter and Small Repairs

Quality
Professionalism
Price
Availability
Terms

Everything is fine, Sergey - cancelled executive, we continue cooperation

Sergey Povzanyuk | Personal

13 March 2024 118 USD
Changes in editing/adding dates to the project

Quality
Professionalism
Price
Availability
Terms

The work is done well, thank you, we continue to work together.

Sergey Povzanyuk | Personal

29 February 2024 71 USD
Amendments to Roles and Overview Pages

Quality
Professionalism
Price
Availability
Terms

Everything is fine, we continue to work.

Sergey Povzanyuk | Personal

19 February 2024 71 USD
New Menu and New Role

Quality
Professionalism
Price
Availability
Terms

Everything is fine, we continue to work.

Sergey Povzanyuk | Personal

14 February 2024 71 USD
The new menu point

Quality
Professionalism
Price
Availability
Terms

Thank you for work! pleasant to collaborate

Sergey Povzanyuk | Personal

8 February 2024 47 USD
Removal of employees and youthers

Quality
Professionalism
Price
Availability
Terms

Thank you for the great work, we continue cooperation.

Sergey Povzanyuk | Personal

6 February 2024 71 USD
Amendments and Supplements

Quality
Professionalism
Price
Availability
Terms

Everything is fine, we work further.

Sergey Povzanyuk | Personal

23 January 2024 71 USD
New Features on the Project Page

Quality
Professionalism
Price
Availability
Terms

Everything is fine, thank you for work.

Sergey Povzanyuk | Personal

12 January 2024 71 USD
New page and additions

Quality
Professionalism
Price
Availability
Terms

Everything is great, everything is in the best way! Thank you for cooperation, we continue to work.

Sergey Povzanyuk | Personal

30 December 2023 59 USD
Улучшения и новые фичеры

Quality
Professionalism
Price
Availability
Terms

The job is done well, we continue cooperation.

Sergey Povzanyuk | Personal

22 December 2023 71 USD
Поправки и улучшения

Quality
Professionalism
Price
Availability
Terms

Everything is great! A Beautiful Actor

Sergey Povzanyuk | Personal

8 December 2023 59 USD
Update of the project page

Quality
Professionalism
Price
Availability
Terms

A great performer! Everyone is satisfied!

1 December 2023 47 USD
Update of the employee page

Quality
Professionalism
Price
Availability
Terms

Everything is great! Everything at the highest level!

28 November 2023 12 USD
Letter of receipt of the request for review and preparation for checking

Quality
Professionalism
Price
Availability
Terms

The job is done at 200%, thank you very much for your work.

22 November 2023 24 USD
Instructions for the assessment of employees

Quality
Professionalism
Price
Availability
Terms

The task is done clearly in accordance with the description. Great work!

Sergey Povzanyuk | Personal

19 November 2023 47 USD
Changes in assessed qualities

Quality
Professionalism
Price
Availability
Terms

As always, a great job!

Sergey Povzanyuk | Personal

16 November 2023 12 USD
Preparation for the AWS Exam

Quality
Professionalism
Price
Availability
Terms

Sergey showed himself as a man, very well possessing the topic! Thank you very much for the help!

Sergey Povzanyuk | Personal

14 November 2023 71 USD
Connecting the country of the project through the API of Google Maps

Quality
Professionalism
Price
Availability
Terms

Everything is done very well, all wishes are taken into account! Thank you very much for cooperation.

6 November 2023 24 USD
Production deploy

Quality
Professionalism
Price
Availability
Terms

A very good and responsible executive. The task is clearly performed.

Sergey Povzanyuk | Personal

1 November 2023 59 USD
Configuration of employees’ data blocks (frontend), project amendments

Quality
Professionalism
Price
Availability
Terms

The work was done from A to I, everything was fine.

26 October 2023 83 USD
Amendments and Supplements

Quality
Professionalism
Price
Availability
Terms

Everything is fine, thank you for work! Continuing cooperation

Sergey Povzanyuk | Personal

20 October 2023 95 USD
Validations in the creation and editing of objects

Quality
Professionalism
Price
Availability
Terms

The work is done as always well, pleased with cooperation.

Sergey Povzanyuk | Personal

15 October 2023 71 USD
Amendments and Supplements

Quality
Professionalism
Price
Availability
Terms

The task is done very well, we work further.

11 October 2023 59 USD
Visibility Matrix for Different Roles

Quality
Professionalism
Price
Availability
Terms

The work is done greatly and even more! Thank you, we continue our work.

7 October 2023 59 USD
Create a Overview c page using React

Quality
Professionalism
Price
Availability
Terms

Everything is done, thank you Sergey.

4 October 2023 83 USD
Packaging and supplements for the Review Management section etc.

Quality
Professionalism
Price
Availability
Terms

It’s all fine, fast and clear.

2 October 2023 83 USD
Implementation of the logic of the reserve of the employee. Part 2

Quality
Professionalism
Price
Availability
Terms

Everything is fine, pleased to work together, we continue to work.

27 September 2023 47 USD
Implementation of the logic of the employee reservation

Quality
Professionalism
Price
Availability
Terms

The task is done clearly according to TZ, as always excellent work

23 September 2023 106 USD
Creating users on AWS and React pages for them

Quality
Professionalism
Price
Availability
Terms

Excellent work done!

20 September 2023 118 USD
Create a backend for the Review Management menu point and integrate with the UI

Quality
Professionalism
Price
Availability
Terms

The task was done faster than expected! Thank you for work, we continue cooperation.

13 September 2023 71 USD
Integration of a Rroject page with AWS services

Quality
Professionalism
Price
Availability
Terms

The task was performed quickly, without any extra questions, Sergey showed a high level of technical skills. Thank you for help!

10 September 2023 71 USD
Supplements and directions of the functional line of pages

Quality
Professionalism
Price
Availability
Terms

Everything is great, as always, fast and beautiful.

7 September 2023 118 USD
The dropch project page list and integration with AWS

Quality
Professionalism
Price
Availability
Terms

Sergey completed the complex project in time, designed the logic on the back-end and front-end, and launched the project on AWS. I made additional directions. Great work Sergey! Thank you for the help!

2 September 2023 71 USD
Create new project page integration with AWS services

Quality
Professionalism
Price
Availability
Terms

Everything was done very well! We work further

29 August 2023 71 USD
Integration of Employee-related pages with AWS

Quality
Professionalism
Price
Availability
Terms

Sergey implemented a complex integration key using DynamoDB and API Gateway. Everything is done greatly

26 August 2023 47 USD
Create a backend for the Clients menu point and integrate with the UI

Quality
Professionalism
Price
Availability
Terms

The complex integration task is performed according to TZ, Sergey showed good knowledge of AWS

22 August 2023 28 USD
Change of the Employee page to React

Quality
Professionalism
Price
Availability
Terms

It is done clearly as usual. Thank you !

19 August 2023 40 USD
Posts on React in the Project

Quality
Professionalism
Price
Availability
Terms

Thank you for quality and speed! Sergey is a great choice for cooperation!

17 August 2023 19 USD
Implementing administrator authorization with Amazon Cognito

Quality
Professionalism
Price
Availability
Terms

Authorization is implemented, with the use of AWS cognito, everything works great!

16 August 2023 12 USD
The main menu of the site

Quality
Professionalism
Price
Availability
Terms

Thank you very much Sergey for the work. Very pleasant to collaborate

15 August 2023 24 USD
Correction and correction of pages on React in the project

Quality
Professionalism
Price
Availability
Terms

The task was done very quickly, all the amendments were made, as described in the task. I am very pleased with Sergey’s work.

14 August 2023 71 USD
Setting pages c using React based on the Material UI template

Quality
Professionalism
Price
Availability
Terms

Great work, Sergey performs tasks faster than I can create them. Thank you for help!

11 August 2023 59 USD
Setting pages c using React based on the Material UI template

Quality
Professionalism
Price
Availability
Terms

Excellent job! I strongly recommend Sergey as a reliable and professional specialist.

10 August 2023 47 USD
List of 2x pages c using React based template

Quality
Professionalism
Price
Availability
Terms

Everything is beautiful, clearly by TZ. Thank you, we continue to work.

9 August 2023 83 USD
List of pages ReviewCreationCard, RequestCard c using React

Quality
Professionalism
Price
Availability
Terms

The complex logic on the pages is realised by Sergey perfectly, quickly and accurately with the description of the task. pleasant to collaborate. Thank you for great work!

7 August 2023 59 USD
List of 2x pages c using React based template

Quality
Professionalism
Price
Availability
Terms

Great like all the previous tasks, thank you, we continue cooperation.

5 August 2023 35 USD
Setting page c using React based on the Material UI template

Quality
Professionalism
Price
Availability
Terms

The order was performed well, in the course of execution were made small corrections (i.e. the page template was modified after the task was published), Sergey did everything right and made all the changes.

3 August 2023 35 USD
Functional page layer on React based on the Material UI template

Quality
Professionalism
Price
Availability
Terms

I am very pleased with cooperation with Sergey, the task was performed quickly and accurately, all the requirements were taken into account, the work deserves the highest assessment.

1 August 2023 35 USD
Setting page c using React based on the Material UI template

Quality
Professionalism
Price
Availability
Terms

It’s fine, thank you, we’re going to work.

Quality
Professionalism
Price
Availability
Terms

A great specialist! The stakes are adequate, maximum point, contact problemless. Thank you for work, we will continue cooperation.

Quality
Professionalism
Price
Availability
Terms

The task was performed in time and in accordance with the technical task. Very pleased with cooperation.

24 March 2020 12 USD
Доработки сайта на Вордпресс

Quality
Professionalism
Price
Availability
Terms

Как всегда все супер! Спасибо!

Quality
Professionalism
Price
Availability
Terms

Everything is done as agreed and in time, I recommend

7 March 2020 7 USD
Доработки сайта на Laravel

Quality
Professionalism
Price
Availability
Terms

Все как всегда супер! Работаем постоянно

3 March 2020 12 USD
Requirements for WordPress Backlink

Quality
Professionalism
Price
Availability
Terms

Very satisfied with the quality of work. Everything was done as I wanted and even better. I recommend cooperation.

25 February 2020 9 USD
Доработки сайта на Вордпресс

Quality
Professionalism
Price
Availability
Terms

Все сделано супер! Сделан плагин для отзывов отлично! Работаем постоянно и по разным проектам

24 February 2020 24 USD
Доработки сайта

Quality
Professionalism
Price
Availability
Terms

как всегда работа супер! Работаю с человеком постоянно! Ответственный и хороший специалист!

18 February 2020 14 USD
Доработки сайта на Laravel

Quality
Professionalism
Price
Availability
Terms

Спасибо за работу! Как всегда сделано все качественно, и даже немного больше, чем изначально договаривались. Очень рекомендую исполнителя!

11 February 2020 9 USD
Доработки сайта на Laravel

Quality
Professionalism
Price
Availability
Terms

все как и всегда супер! Спасибо! Работаем дальше )

7 February 2020 14 USD
Доработки сайта на laravel

Quality
Professionalism
Price
Availability
Terms

как всегда все супер!

работаем уже постоянно)

4 February 2020 8 USD
Website for Laravel

Quality
Professionalism
Price
Availability
Terms

A great performer! We are not working for the first time. I highly recommend

3 February 2020 34 USD
The website on Laravel

Quality
Professionalism
Price
Availability
Terms

He performed the work very well! There is understanding both in the front and in the back. Thank you very much! I recommend and I work on myself.

Quality
Professionalism
Price
Availability
Terms

Работали с Сергеем около 4 недель, он оперативно отвечал на сообщение и старается сделать хорошо.
И старался сделать больше чем заявлено в ТЗ - так сказать перевыполнить план.
Спасибо ему за работу
Возможно в будущем еще будим сотрудничать.
Успехов!

Profile deleted | Safe Safe | Response feedback

28 November 2019 69 USD
Программист PHP

Quality
Professionalism
Price
Availability
Terms

Хороший исполнитель. Смог реализовать сложную функционал. Был на связи то есть не пропадал + вежливый.

Profile deleted | Safe Safe | Response feedback

26 August 2019 206 USD
Improving the functionality of the site

Quality
Professionalism
Price
Availability
Terms

Thank you, Sergey for the work done, as well as the competence.

Profile deleted | Safe Safe | Response feedback

Activity

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