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  1. Freelancers

Anna K.

Offer Anna work on your next project.

Ukraine Ukraine
24 minutes back
Available for hire available for hire
4 proposals made
on the service 8 years
  • API Integration
  • MySQL/MsSQL/NoSQL
  • PostgreeSQL
  • webhooks
  • django
  • GitHub/GitLab
  • VUE.JS/VUEX/NUXT
  • CRM Automation
  • Vue2/Vue3 (Options/Composition API)
  • python
  • telegram bot
Freelancer Anna K. — Ukraine. Core skill — Python, Databases & SQL

Rating

Successful projects
No data
Average rating
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Rating
284
Python
658 place out of 4457
Databases & SQL
152 place out of 1203

Language proficiency level

Українська Українська: fluent
Русский Русский: fluent
Slovenčina Slovenčina: advanced
English English: pre-intermediate

Skills and abilities

Programming

Services

Administration

Portfolio


  • Module for secure integration with API and protection of confidential data

    Python
    Module for secure integration with API and protection of confidential data — example of freelancer's portfolio work in category Python
    Developed an architectural template for integrating external services with a focus on security. All work with secret keys and tokens has been moved to isolated environment variables (.env), which eliminates data leakage from the repository. Implemented a strict server response control system (Error Handling) that prevents failures during unstable connections.

    Stack: Python, API Security, Environment Variables (.env), Requests.

  • Bot-automator for monitoring limits and resources in real time

    Bot Development
    Bot-automator for monitoring limits and resources in real time — example of freelancer's portfolio work in category Bot Development
    Implemented an autonomous script for monitoring the status of an external resource via API. The bot analyzes time intervals and performs an automatic action when a critical threshold is reached. To avoid server blocks, I implemented a system of dynamic delays (randomization of pauses) that simulates the behavior of a real user.

    Stack: Python, Requests, Telegram Bot API, JSON.

  • Currency conversion module with multi-level error handling.

    Data Parsing
    Currency conversion module with multi-level error handling. — example of freelancer's portfolio work in category Data Parsing
    Implemented the core for a Telegram bot that interacts with external financial APIs. The main focus is on fault tolerance: the program checks the correctness of user input (type validation), handles network delays through timeouts, and correctly parses JSON responses. Custom exception classes are used for clear feedback to the user.

    Stack: Python, Requests, JSON, API Integration.

  • Database design and optimization (SQLite/PostgreSQL).

    Databases & SQL
    Database design and optimization (SQLite/PostgreSQL). — example of freelancer's portfolio work in category Databases & SQL
    As part of the portal development, I designed the database structure to ensure quick access to publications and their categories. I set up many-to-many relationships for tags and one-to-many relationships for authors. I worked on optimizing queries to reduce server load.

    Stack: SQL, PostgreSQL, Django ORM.
  • 18 USD

    Custom password validation and data protection system.

    Python
    Custom password validation and data protection system. — example of freelancer's portfolio work in category Python
    Implemented the logic for verifying the reliability of user data. The module checks passwords for compliance with security requirements: minimum length, presence of digits, special characters, and uppercase letters. This helps protect user accounts from simple brute force attacks even at the registration stage.

    Stack: Python, Django (ValidationError), Regular expressions (re).
  • 18 USD

    Backend of a news portal (based on Django)

    Web Programming
    Backend of a news portal (based on Django) — example of freelancer's portfolio work in category Web Programming
    Developed a data structure for a content platform. In this fragment - a publication model (Post) with support for different types of content, automatic rating calculation (likes/dislikes), and generation of short previews for the main page. Used Django ORM and custom model methods to optimize database operations.

Activity

  Latest proposals 10
I am looking for a programmer to fix bugs on the website and some cloud settings.
56 USD
Development of a simple controlling and management record system in Google Sheets "turnkey"
275 USD
Bug fixing in automation software using Python Playwright
113 USD
Gambling sites
45 USD
Converting PDF to WordDoc
1400 USD
AI agent for research
1650 USD
Development of an adaptive e-learning platform (LMS) — Next.js 14, React, Stripe, Mux, Prisma
275 USD
AI LIVE TRENDING
406 USD
Development and setup of a website on WordPress + configuration of the Memberpress plugin.
564 USD
Telegram Notification Bot for Marketplace + Gmail
113 USD