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Mikola Yefremov

Offer Mikola work on your next project.

Ukraine Borispol, Ukraine
3 days 21 hours back
Available for hire available for hire
15 Safes completed
2 years back
15 clients
1 proposal made
age 43 years
on the service 9 years

Rating

Successful projects
88%
Average rating
No data
Rating
1269
C#
37 place out of 1197
6 projects
C#
4 projects
Bot Development
2 projects
Cryptocurrency & Blockchain
2 projects
Desktop Apps

Skills and abilities


Architecture

Outsourcing & consulting

Portfolio


  • Mobile Chat App

    C#
    The chat system from zero. It is fully developed by me including backend and frontend. Send videos, files, automatization of payments.
  • DEX Arbitration Bot (Direct Blockchain Interop)

    C#
    DEX Arbitrage bot including:
    1 . The main app.
    2nd Execution modules (Work on several servers in parallel)
    Three Samart Contract for Swap Execution
  • Bott to execute the transaction on binance. for several accounts.

    C#
    The main functions:
    Create a database structure that will store all the entities involved in the operations.
    - sending and receiving the application for the transaction (buy/sell) with crypto-grow through the protocol via the internet (signals) - implemented through the built-in DLL
    - organization of the input and editing interface of the necessary data for the BD, as well as viewing logs and results of the application work
    Execution of market transactions by orders on the specified accounts in the amount counted according to the coefficient
  • 79 USD

    Monitoring of the status of sites

    C#
    The program works in three. Monitoring the availability of sites, the line of domain action, the Google index.
  • 90 USD

    Intergovernmental and Intergovernmental Arbitration Board.

    C#
    The arbitration bot scans the exchanges and seeks where cheaper to buy and cheaper to sell cryptocurrencies. You can automatically make a purchase order.

Reviews and compliments on completed projects 15 1

Quality
Professionalism
Cost
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Deadlines

He did not enter the deadline, he constantly translated the deadlines to the last minute. The product was not seen and nothing was not tested.

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The project is completed in 1 day. I couldn’t find a good artist for a long time. We will continue to work.

1 February 2023 271 USD
Creating an automated program

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A good specialist! I recommend

Taras Vasyunyk | Personal

19 December 2022 451 USD
Implementation of the algorithm of automatic work on cryptocurrencies.

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The result of my work with Nicholas exceeded even my most bold expectations. Highest professionalism, creativity, responsibility and initiative. Many of the components of the project, improving the work of the system, he himself recommended and proposed. I am admired.

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I am very pleased that with my project I came to Mykola, who not only clearly fulfilled all the tasks, but also advised how it can still be improved. If you have a project linked to cryptocurrency exchanges then I strongly recommend choosing Mykola as an executive.

20 July 2022 90 USD
BOT

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I worked well with Nicholas.
It’s clear, fast.
I recommend

17 May 2022 113 USD
Bot for Binance.

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completed in time. Thank you for great cooperation.
We will test and adjust if necessary.

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Thank you for best job +10

****************************************************

30 April 2022 113 USD
Создать трейдинг бот для биржи Bybit

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It’s quick and quality, thank you.

Mr Mr | Personal | Response review

12 April 2022 34 USD
Bott Binance Futures through API

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The project is done greatly! I didn’t expect it to be so fast and without touch. Made strongly! The luck.

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Thanks to Nicole, I am pleased with the work.

Profile deleted | Safe Safe | Response review

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Everything is perfectly implemented, all the scenarios are corrected and correctly designed. Technically, all processes during the test are corrected and corrected.

23 December 2018 45 USD
Accounting of goods and funds in the store

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The work was done greatly. I am satisfied with everyone. All the wishes were fulfilled, and the developer also proposed his, more successful solutions.

14 January 2018 68 USD
Arbitration of Cryptocurrency Program

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I am very happy to get to know and collaborate with Nicholas. A professional of his business. The work was done qualitatively, in time, with the understanding of the essence, done further than expected. I recommend and will contact you again. Thank you !

14 October 2016 7 USD
Sending messages to OLX

Quality
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Freelancer Nikolai Efremov (Nikolay 1982) This is a good and cheap program!! I advise!

Quality
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Freelancer Nikolay Efremov (Nikolay1982) offered his services to create the program. He called an acceptable price for me and made a gap that exceeded my expectations. He decided to continue cooperation with Nicholas.

Activity

  Latest proposals 10
Telegram Bot
564 USD
YURII Personal project
58 USD
Developing a chatbot in Telegram with integration with ChatGPT
1500 USD
Trading bot for market-making on crypto exchanges (CEX)
1533 USD
The Trade Bot. Machine learning
1533 USD
Program for Trading
970 USD
Facebook Register through emulator and browser automation
451 USD
Required a channel telegram cloning bot + content replacement
158 USD
You need to create an app on C# under Windows.
450 USD
Development of financial applications in the Unity environment
564 USD