You will get Сustom REST API For Your Web or Mobile Application
Project details
I build reliable backend systems and APIs for web applications, SaaS products, and mobile apps. Using Python, FastAPI, Flask, and modern backend technologies, I create clean, secure, and maintainable solutions designed to support your project's growth.
What's included:
⚙️ Custom API Development
Build REST APIs tailored to your application requirements, business logic, and frontend/mobile integrations.
🏗️ Backend Development & Architecture
Create structured backend systems with clean code, efficient business logic, and maintainable architecture.
🗄️ Database Design & Integration
Design database schemas, relationships, migrations, and optimize queries using PostgreSQL and other databases.
🔌 Third-Party API Integrations
Connect external services, payment providers, authentication systems, and business tools.
🔐 Authentication & Security
Implement user authentication, authorization, permissions, and secure API practices.
📈 Performance Optimization
Improve API response times, database performance, and backend reliability.
🚀 Deployment Setup
Configure production environments using Docker, servers, and deployment workflows.
What's included:
⚙️ Custom API Development
Build REST APIs tailored to your application requirements, business logic, and frontend/mobile integrations.
🏗️ Backend Development & Architecture
Create structured backend systems with clean code, efficient business logic, and maintainable architecture.
🗄️ Database Design & Integration
Design database schemas, relationships, migrations, and optimize queries using PostgreSQL and other databases.
🔌 Third-Party API Integrations
Connect external services, payment providers, authentication systems, and business tools.
🔐 Authentication & Security
Implement user authentication, authorization, permissions, and secure API practices.
📈 Performance Optimization
Improve API response times, database performance, and backend reliability.
🚀 Deployment Setup
Configure production environments using Docker, servers, and deployment workflows.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$500
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 5 | 10 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
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About Vsevolod
Python Automation Developer | Telegram Bots, Scraping & AI Tools
Tiraspol, Moldova - 11:18 am local time
Core stack: Python (Aiogram, Telethon, Requests, BeautifulSoup), SQL (PostgreSQL, MySQL, SQLite), plus C# and C for lower-level work. On the web side: HTML, CSS, JavaScript/TypeScript — including shipped LLM-integrated apps and Manifest V3 Chrome extensions (Vite, Preact, TypeScript). I can take a project from a scraping pipeline or bot backend through to a working UI, not just a standalone script.
What I deliver:
- Telegram bots and automation pipelines (Aiogram, Telethon) — scraping, monitoring, scheduled jobs, third-party API integrations
- Data extraction at scale: BeautifulSoup/Requests scrapers with clean, normalized output into SQL databases
- AI-integrated features: LLM-powered generation, translation, and itinerary/content-planning flows built into real shipped apps
- Browser extensions (Manifest V3) with tested, typed codebases
- Comfortable reading and extending other developers' code, not just greenfield builds
Technical degree, working English, and years of hands-on freelance experience. Send over your codebase or requirements and I'll give you a realistic estimate before we start.
Steps for completing your project
After purchasing the project, send requirements so Vsevolod can start the project.
Delivery time starts when Vsevolod receives requirements from you.
Vsevolod works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Analysis
I review your project requirements, define the API structure, and plan the best technical approach.
Backend Development
I build the API endpoints, database models, business logic, and required integrations.