Oleg C.
Private message
Offer work
Odessa,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
English: upper-intermediate
CV
Python Backend Engineer | AI Agents, APIs & Chatbots
Hello! I am a Python Software Engineer with 3.5+ years of experience helping startups and businesses build reliable backend systems, AI-driven automation, and intelligent chatbots.
What can I help you with:
AI-powered agents and assistants (OpenAI, LangChain, CrewAI)
Scalable REST APIs and backend services (FastAPI, Flask)
Telegram, Discord, and Slack bots for automation and customer interaction
Integration with third-party APIs, payment systems, and internal services
Crypto-related services and blockchain tooling
Key achievements:
Designed and implemented AI-powered agents using OpenAI API, LangChain, and CrewAI, enabling smarter automation and improved user interaction.
Built and launched multi-platform chatbots (Telegram, Discord, Slack) that automated workflows and significantly reduced manual operations.
Developed and maintained production-grade RESTful APIs used across multiple services and clients.
Integrated AI and automation tools into existing systems, helping clients increase productivity and create new revenue streams.
Improved system performance and reliability by introducing async programming, Celery background tasks, and Docker-based deployments.
I focus on solving real business problems, not just writing code.
Open to long-term cooperation and complex, high-impact projects.
Skills and abilities
Programming
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AI & Machine Learning
from 23 USD for hour
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Bot Development
from 14 USD for hour
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Data Parsing
from 18 USD for hour
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Databases & SQL
from 14 USD for hour
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Desktop Apps
from 14 USD for hour
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Gaming Apps
from 14 USD for hour
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Python
from 14 USD for hour
Services
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Data Processing
from 23 USD for hour
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Payment Systems Integration
from 14 USD for hour
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Tuition
from 14 USD for hour
Administration
- Linux & Unix
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Software & Server Configuration
from 14 USD for hour
Reviews and compliments on completed projects 14
If you need a Lead who is not afraid to speak the truth, knows how to "reject" a weak solution, and guarantees system stability under load — Oleg is the best choice. He is a top-level specialist. I recommend him.
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9 August 2025
200 USD
DeLiMi WhatsApp bot — final adjustments (button removal, counter, prompt, etc.)
The project is completed, the tasks are closed. Thank you for your cooperation.
27 July 2025
609 USD
Creating external infrastructure for tg-vp bot
Everything is great! Excellent, wonderful, marvelous (I've already typed 25 characters?)
12 June 2025
420 USD
DeLiMi WhatsApp Bot — MVP with voice-over, translation, and OCR
The work went smoothly, Oleg is in touch, responds quickly, tries to help, even if something doesn't go according to plan. Understands the topic, is reasonable. Hope to cooperate again.
12 June 2025
79 USD
Server configuration for Python code execution
10/10, the best specialist in their field!
16 May 2025
100 USD
Development of a Telegram bot with voice and visual input (MVP)
A Telegram bot with support for text, voice messages, photos, and PDFs has been implemented. The basic functionality works stably. Thank you for your work.
14 February 2024
304 USD
Creating a BOTT telegram for learning English
Oleg showed himself as a professional in his affairs. Always went to contact, understood the essence of tasks and made quick and successful solutions. Oleg showed a high level of professionalism and technical expertise. Each stage of the project was carried out timely and with the attention to the details. satisfied with the result. I recommend this developer for all who are looking for a reliable and professional partner to create a bot!”
4 December 2023
338 USD
The Assistant
Great work! Processed according to TZ.
4 November 2023
11 USD
Consulting on chat bots
Everything is normal. On requested consultation, I received a strong answer.
24 October 2023
248 USD
Create an API client for Telegram bots
The work is done according to the
17 September 2023
11 USD
Send calculations from SQL using Python to Slack
The task is performed perfectly. I recommend work.
4 August 2023
83 USD
TG BOT account store
A hard code! I did everything as fast as possible, I advise to contact him, I did everything without bugs!
12 July 2023
11 USD
Parking of TG channels by id
A great developer.
The Python Dev
I remained happy.
Ranking 10/10
3 July 2023
33 USD
Opening the service
Thanks to Olga. Everything is great. I recommend the executive.
