Orest K.
Private message 
Offer work 
Lvov,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
English: advanced
Polski: elementary
CV
Full-Stack Developer | Web Development with Python, Django, FastAPI, JavaScript, React
💼 3+ years of experience in an IT company + freelance projects
💡 I build efficient and scalable web solutions — from MVP to production
Integration AI, chatbot's, RAG, ChatGPT, Quadrant
I specialize in full-cycle development: from database design to responsive UI, API integrations, and payment systems. I have deep expertise in building modern applications with a focus on performance, UX, and long-term maintainability.
🔧 Core Tech Stack:
Backend:
Python, Django, FastAPI, SQLAlchemy, Stripe, OAuth2, JWT
Frontend:
React, JavaScript, TypeScript, Tailwind CSS, Shadcn/UI, Redux, HTML, CSS, WebSockets, Axios, React Hook Form, Zod, D3, Chart.js
Databases:
PostgreSQL, MySQL, SQLite, MongoDB, Supabase
Other:
REST APIs, Docker, Git, CI/CD, WebSockets, Stripe integrations, responsive design, OAuth
📬 Feel free to message me if you want to bring your idea to life, optimize an existing product, or find a reliable technical partner for your launch.
Skills and abilities
Programming
Portfolio
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225 USD AI Integration with ChatGPT, LangChain, and RAG
AI & Machine Learning
Implemented AI functionality using ChatGPT, LangChain, and Retrieval-Augmented Generation (RAG) to build a dynamic, context-aware service capable of processing queries based on internal or external data sources.
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225 USD Clean and responsive interface design with React, Tailwind CSS
Development of a service using React, Tailwind CSS, Shadcn, and MUI
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225 USD Django ( DRF ) Development
Python
Web service development using Django and Django REST Framework (DRF)
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225 USD FastAPI Backend
Python
Development of CRUD APIs/Integrations/Auth JWT using the FastAPI library
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18 USD The Hour
Python
The program calculates the time of sessions, for a quick calculation of the working time
• • • • • • • • •
The program calculates the time of sessions, for a quick calculation of working time
Reviews and compliments on completed projects 31
17 November 2023
11 USD
Writing a program for the generation of words combinations
A good customer, I will order more.
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16 November 2023
11 USD
You need to extract data from Landing to the telegram bots
He performed his work quickly and well.
13 November 2023
23 USD
Django Back and JS Front
Thanks, it’s clear!
17 September 2023
11 USD
Help with Python Labs
The work was done properly and timely, thank you.
15 September 2023
23 USD
In the Django project you need to connect the form to the cast form.
Everything is fast and quality.
16 June 2023
14 USD
Editing Excel File
All the work was done quickly and efficiently.
30 May 2023
45 USD
Скрипт для перевода полей в xml
Everything works according to TZ, quickly and without any excessive questions. I highly recommend this executive.
27 May 2023
90 USD
Створити сайт на Django
All is well, the executor clearly tracks the TZ and performs everything in time.
22 May 2023
27 USD
Program to optimize the performance of personal affairs throughout the day
The coach, as always, performed everything quickly and efficiently. This is not the first time I have proven my competence. I recommend
15 May 2023
45 USD
Курсова робота
He performs his work quickly and efficiently. Very pleased !
14 May 2023
11 USD
Контрольна по інформатиці 6 клас
Super fast done! I recommend cooperation.
11 May 2023
29 USD
Video streaming system using the river system
I liked the work done and was done even faster than I expected. I want to pay attention to the special attitude of the executive, who after performing me solve my problems and explained everything. I'm glad that everyone is addressing him.
8 May 2023
15 USD
Написання скріпта на мак ос
Arest professional of his work, very excellent as people and as an executive, I highly recommend all 1000% Fast, professional!!The !
3 May 2023
16 USD
Практична робота "Створення інтерактивної веб-сторінки"
Fast, clearly by TZ, adequate price
Very pleased, I recommend!
15 April 2023
14 USD
Python TKinter Programme on Pharmaceuticals (Medicine Guide)
The task was performed quickly and at a fairly high level. I recommend this to every freelancer.
2 March 2023
14 USD
Task of Information Science
As always 1000/10. I am pleased with cooperation, fast, quality, without misunderstandings. I will recommend and I will continue to discuss.
25 February 2023
11 USD
The Amazon S3
He saved everything for work.
18 February 2023
11 USD
The task of pyton
pleased with cooperation. He does not do a job, he gives his advice and recommendations.
23 December 2022
13 USD
Task of Information Science
I’m working together for the second time and it’s all great. I am satisfied with the work. Fast and as always. Thank you !
4 December 2022
5 USD
Very easy Python tasks
Quick, efficient and easy to recommend.
29 November 2022
7 USD
Archive for file groups
Orrest successfully dealt with the task set. Thank you !
27 November 2022
9 USD
JSON tasks on Python
Everything is good and fast, pleasant to do it.
24 November 2022
7 USD
Desarchive and change of files
Aristotle successfully dealt with the task. Thank you !
14 November 2022
5 USD
Information Technology Solutions (Python)
Fast and high quality work. The executive clearly dealt with the project. Very grateful !
16 August 2022
7 USD
Automating the work of the Excel file, continuation
A great freelancer!
I recommend cooperation. It works well and efficiently, offers options.
4 August 2022
16 USD
Automating work with Excel file
A wonderful freelancer! Thank you very much for your collaboration, I’m going to talk to you again.
interested in cooperation, asks in-depth questions that understand not advanced user, offers a solution.
I recommend it!
10 June 2022
5 USD
Consolation program on Python
He quickly performed the job. Full understanding of the task. Rapid response to the message
27 May 2022
45 USD
Python software development
Fast and quality work. I recommend the executive.
26 May 2022
7 USD
Python Finish Program
Everything was done greatly and timely. The recording.
25 May 2022
18 USD
Python TKinter Application Project
The work was done very quality. I recommend this program to everyone.
19 May 2022
11 USD
python application using tkinter library
Work is done quickly and efficiently.
Activity
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Deepswap
609 USD
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Sending messages in Viber with a script
100 USD
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Python developer
18 USD
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Script for optimizing titles/attributes/features just for the ChatGPT API
56 USD
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Administration of the service/software "git"
45 USD
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Python script for bulk uploading documents from two APIs
234 USD
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FFMPEG App with Python.
582 USD
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Development of a demo version of a cryptocurrency wallet
10 000 USD
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MVP platform for price comparison in supermarkets (ZNYZHKA.UA)
586 USD
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Need to create an AI agent on the OpenAI platform
500 USD
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