Mariya Zakrevskaya
Offer Mariya work on your next project.
Private message 
Odessa,
Ukraine
11 days 2 hours back
available for hire
3 Safes completed
1 year back
3 clients
age 37 years
on the service 1 year
Rating
Average rating
Language proficiency level
Українська: fluent
Русский: fluent
English: advanced
Skills and abilities
Programming
-
AI & Machine Learning
from 18 USD for project
-
Bot Development
from 18 USD for project
-
Data Parsing
from 18 USD for project
-
Databases & SQL
from 18 USD for project
-
Web Programming
from 18 USD for project
Services
-
Data Processing
from 18 USD for project
-
Online Stores & E-commerce
from 147 USD for project
-
Payment Systems Integration
from 68 USD for project
Mobile development
-
App Development for Android
from 113 USD for project
-
Apps for iOS (iPhone and iPad)
from 113 USD for project
-
Hybrid Mobile Apps
from 113 USD for project
Portfolio
-
609 USD REST API for mobile application
Python
The application is built on a modern API using the OpenAPI 3.0 standard and supports authorization via tokens (JWT or standard tokens), ensuring a high level of user data security.
Main features of the application
… 1. Registration and authorization
- Registration of new users
- Login using JWT tokens
- Authorization through Google and Apple
- Updating and verifying access tokens
- Secure logout from the account
2. Access recovery
- Sending a confirmation code for password reset
- Verifying the confirmation code
- Recovering the user's password
3. Product catalog
- Viewing the list of product categories
- Viewing popular categories
- Hierarchical category tree for easy navigation
4. Orders and purchases
- Viewing products by categories
- Placing and processing orders
- Managing order history
5. User profile
- Viewing personal information
- Editing profile data
- Deleting the account
6. Contacting support
- Sending messages to support through the built-in chat
7. Security
Authorization using tokens is required to access the application's protected resources. All personal data of users is protected according to modern security standards.
-
902 USD "REST API for online clothing store"
Python
Here is the formatted list with punctuation and structure:
Main modules and their functionalities:
… **1. Authentication and Authorization**
- Registration via phone (sending/verification of code);
- JWT authentication (login/logout/token refresh);
- Simple token authentication;
- Password reset (sending code → verification → setting new password);
- Social authorization (Google, Facebook, Apple);
- Creating a superuser.
**2. User Profile**
- Viewing and updating profile information;
- Managing delivery addresses (CRUD operations).
**3. Cart**
- Adding/removing products;
- Viewing cart contents.
**4. Products and Categories**
- Viewing products (latest, list, by categories, with filtering);
- Managing favorite products;
- Viewing product options (sizes, colors);
- Managing categories (for admins);
- Managing brands, colors, sizes (for admins).
**5. Orders and Payment**
- Creating an order;
- Paying for an order;
- Checking order status;
- Processing successful payment.
**6. Reviews**
- Adding reviews;
- Viewing list of reviews.
**7. Administration**
- Managing categories;
- Managing genders (for categories);
- Managing brands;
- Managing colors;
- Managing sizes;
- Adding/updating products.
**8. Auxiliary functions**
- WebSockets for messaging;
- Handling pending tasks;
- Assigning tasks.
**Implementation features:**
1. Uses **two types of authentication**:
- JWT;
- Simple tokens.
2. **Operation confirmation**:
- Sending codes via Celery/Redis.
3. **API structure**:
- Public endpoints;
- Admin endpoints.
4. **Additional features**:
- Social authorization;
- Flexible product filtering system;
- Full management of cart and orders.
**Summary:**
This functionality fully covers the needs of an online clothing store — from **user registration** to **order placement** and **catalog administration**.
-
451 USD Trading bot for futures
Python
This project is a trading bot for futures, designed for automatic execution of trading operations on the Bybit exchange. The bot receives signals from the TradingView platform and executes trades according to specified rules and strategies. The project includes a web interface (admin panel) through which users can customize and manage various aspects of the trading process.
Main functions:
1. Receiving signals from TradingView
… ⦁ The bot is integrated with TradingView and receives trading signals in real-time mode.
2. Administrative panel
⦁ Through the admin panel, users can customize and manage exit strategies.
⦁ Possibility to set and adjust various types of orders and risk management parameters.
⦁ Users can add API accounts to connect to the exchange.
⦁ Limit on the number of simultaneously open trades.
⦁ Limit on the maximum number of averaging for each trade.
3. Trailing stop
⦁ Implemented trailing stop mechanism for automatic price following and profit protection.
4. Position averaging
⦁ Possibility of averaging positions to improve entry point and reduce risks.
⦁ Averaging step in percentages.
⦁ Averaging multiplier.
⦁ Consideration of the average entry point to optimize the averaging strategy.
5. Stop losses
Support for various types of stop losses:
⦁ Stop loss, % (trailing/fixed).
⦁ PnL stop loss.
⦁ BU stop loss.
6. Take profit
Implementation of take profit in two or more parts:
⦁ The first part locks in profit upon reaching a certain price.
⦁ The second part involves moving the stop loss to the breakeven zone (with trailing or fixed stop loss).
⦁ Take profit can be set in two or more parts, and position closure can be divided in percentage ratio (e.g. 20%, 30%, and 50%).
⦁ Setting stop loss to breakeven zone can be done at any stage with trailing or fixed stop loss.
7. Additional features
⦁ Flexible adjustment of parameters for more precise alignment with the user's trading strategy.
⦁ Logging and monitoring of bot actions for analysis and optimization of the trading process.
Technologies and tools
Django: Web framework for creating admin panel and managing server-side.
Celery: For processing asynchronous tasks and executing real-time trading operations.
TradingView Webhooks: For receiving trading signals.
Bybit API: For interacting with the exchange and executing trading operations.
PostgreSQL: As a database for storing settings and logs.
Conclusion
The project is a powerful tool for automatic futures trading on the Bybit exchange. Thanks to integration with TradingView and extensive customization options, the bot can be adapted to various trading strategies, making it an indispensable assistant for traders.
Reviews and compliments on completed projects 3
14 November 2024
311 USD
Writing a trading algorithm for a cryptocurrency exchange
Quality
Professionalism
Cost
Contactability
Deadlines
The work was done excellently. All the agreed points in the technical specification were implemented. The contractor was always in touch, which allowed for quick clarification of the necessary points and discussion of revisions.
Aleksandr Konovalov
| Personal | Response review
30 October 2024
316 USD
Personal project for Maria
Quality
Professionalism
Cost
Contactability
Deadlines
Everything was done as agreed with Maria and Yuri.
It was a pleasure to work, and I will reach out again.
Always in touch, everything was done according to the specifications.
If you need quality work - Don't hesitate to contact.
I recommend!
Maxim B
| Personal | Response review
12 October 2024
81 USD
Project1
Quality
Professionalism
Cost
Contactability
Deadlines
I recommend, the work was done clearly within the agreed deadlines, all wishes were fulfilled. The author was always in touch.
Roman Bilous
| Personal | Response review
Activity
| Latest proposals 6 | Budget | Added | Deadlines | Proposal | |
|---|---|---|---|---|---|
|
Asterisk. Number verification service.
564 USD
|
|||||
Project1
81 USD
|
|||||
|
BLUM
79 USD
|
|||||
|
Personal project for Maria
316 USD
|
|||||
|
Personal project for Maria
541 USD
|
|||||
|
Writing a trading algorithm for a cryptocurrency exchange
311 USD
|
