Serhii D
Private message 
Kyiv,
Ukraine
a little busy
Rating
Language proficiency level
Українська: upper-intermediate
English: intermediate
Skills and abilities
Programming
Services
Mobile development
Portfolio
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1158 USD Web platform for horary astrology React (Vite) + Python
Python
Web platform for horary astrology with a personal cabinet: calculation of the natal chart by date, time, and place, saving charts and clients, visualization of the diagram with houses and planets. Stack: React (Vite) + Tailwind, FastAPI (Python), Swiss Ephemeris (PySwisseph) for astronomical calculations, Strapi CMS, nginx.
Main challenges: correct handling of time zones (IANA/GMT) and JD UT, geocoding cities via Nominatim, calculation of aspects (before/after), lots, antiscia, and fixed stars with alignment of results with external services. Implementation: backend API with SQLite, authentication (JWT), city search, client calculations of lots and light transmission, SVG diagram of the chart with houses and planets.
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557 USD Telegram Web App for convenient B2B application processing
Bot Development
Telegram Web App for B2B sales/application processing of polymer products with division into product subdomains. The architecture provides quick access to categories, high conversion, and is ready for integration with an AI consultant.
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445 USD AI Telegram Bot for photo uniqueness and automatic preparation
Bot Development
Telegram bot for automating the preparation of posts for social media. The user forwards ready posts (photos and text) to the bot, after which the bot automatically processes the images, adds the necessary elements, and creates a ready publication for the channel. This allows for quickly preparing large volumes of content for carousels and publications.
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111 USD ONLINE CALCULATION CALCULATOR
Python
The task is to enter the size of the room and the size of the terrace, choose the interior finishing, select the size and type of windows and doors, bake, and obtain the final cost. All materials with numbers.
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557 USD SmartProcure AI: Intelligent Procurement Forecasting System
AI & Machine Learning
SmartProcure AI is a modern web application for procurement managers that automates the process of creating purchase orders for suppliers. The system analyzes sales history, current inventory levels, and logistical parameters to generate accurate recommendations for restocking, minimizing the risks of out-of-stock and overstock.
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445 USD Telegram bot for orthodontist. Personal assistant of the clinic.
Bot Development
A Telegram bot has been developed for a private orthodontist that automates communication with patients and optimizes the appointment scheduling process. The bot functions as a digital administrator 24/7.
Main functionality:
Greeting and initial navigation for new users
… Sections: "About the doctor," "Services," "Address and contacts"
Gallery of work "Before/After" with categories (braces, aligners, pediatric orthodontics, etc.)
Online appointment scheduling with a questionnaire
Automatic reminders about the visit
Integration with CRM for application submission
DEMO BOT
#TelegramBot
#Python
#Aiogram
#CRMIntegration
#HealthcareIT
#DentalClinic
#Automation
#ChatbotDevelopment
#APIIntegration
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111 USD Bot for centralized approval of invoices in the group of companies
Bot Development
Main functionality:
1. Company selection
Support for multiple legal entities (K1, K2, K3) with separate account management.
… 2. User roles
Initiator — creates an invoice, fills in the details (recipient, amount, purpose of payment), uploads a file.
Approver — accepts or rejects the invoice with a record of the date and decision.
Executor — receives the approved invoice for payment processing.
Auditor — generates reports and exports approved invoices for the selected period.
3. History preservation
The bot maintains a structured table of approvals with the following fields:
date of entry
date of approval
initiator
company
recipient
amount
procurement item
link to the invoice file
status (pending / approved / rejected)
4. Control and transparency
Complete history of approvals
Inability to lose an invoice
Transparent decision-making process
Export to Excel/CSV
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334 USD Development of a Telegram bot for processing service requests with integration
Bot Development
Developed a Service Desk system for internal use by a network of stores. The bot replaced chaotic calls and messages in messengers with a structured ticketing system.
Functionality:
- Application submission: Convenient wizard (selection of location, problem category, priority).
… - Multimedia: Ability to add photos/videos of the malfunction to the application.
- Role model: Interface for staff (submission) and engineers (processing).
- Statuses: Tracking the lifecycle of the application (New → In Progress → Completed/Rejected).
- Reporting: Team /report for the manager with statistics for the period.
And!!! Integration: Google Sheets API:
All applications are automatically duplicated in Google Sheets in real-time. This allows for tracking expenses, analyzing the most common malfunctions, and monitoring the work of contractors.
Technology stack: Python, Aiogram, Google Drive API, Google Sheets API.
#python #telegrambot #automation #googlesheets #servicedesk #botdev
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1225 USD AI bot that responds to clients based on your data or product
AI & Machine Learning
AI bot that responds to clients in your messenger based on your knowledge base. Responds automatically or offers a draft response to the operator. You always control the dialogue.
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334 USD Bot for receiving applications from clients
Python
Chatbot - a collection of structured requests from clients with a minimal number of fields, but with strict validation of product parameters.
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401 USD Telegram web app Store of gaming goods / virtual goods
Python
Steam, Xbox, PlayStation, etc.
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445 USD Astrology / Natal charts
Python
A modern web service for creating natal charts that combines mathematical accuracy and premium design.
Reviews and compliments on completed projects 4
25 March
267 USD
Horary astrological astroprocessor (Web)
I would like to sincerely thank Sergey for the work done on the project. He successfully implemented complex functionality that included working with databases, implementing aspects in the horary chart, calculations of lots, antiscia, and fixed stars, and visualizing the chart. I would like to specifically highlight Sergey’s willingness to tackle complex issues and bring them to the correct result, as well as his speed of work. As a result, I received a fully functioning product that meets all the tasks set at this stage. Thank you for the collaboration and the effort put in.
1 March
334 USD
Horary astrological astroprocessor (Web)
We have completed the second stage of creating the horary astrological processor with Sergey. He implemented very complex mathematical logic of aspects in the horary chart. Everything works clearly and correctly, and I am completely satisfied with the results of the work. Thank you for your responsibility, patience, and willingness to delve into complex astrological mathematics.
16 February
557 USD
Horary astrological astroprocessor (Web)
I started working with Sergey because I immediately understood that he could handle the assigned task - developing an astrological processor from scratch. In communication and agreeing on details, everything was very quick and clear. We completed the first stage, but I already see good results. In the first 11 days, Sergey has fully implemented the website architecture, all the main blocks, and connected the necessary technical components. The work is progressing quickly, structured, and transparently — Sergey explains the stages, takes into account wishes and comments. Overall, I am very satisfied with the pace, communication, and professional approach to tasks. I hope for a wonderful final result.
Done quickly and everything as it was needed! Thank you!
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Consultation on AI automation of the process
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Content bot I am looking for a coder who can support the project
445 USD
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Consulting, training, programming
16 USD
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Футбольний бот (новини)
557 USD
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Referral-Analytical Telegram Bot
600 USD
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Freelance project
223 USD
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Freelance project
126 USD
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