- Worked on American communication system, mainly on calls (VoIP with Jitsi meet) and texting.- That is a big production system on microservice archytecture and used mainly Python but also Lua, Javascript, Typescript, some Java. Also, worked with non-SQL database (MongoDB) for the first time.

- Created back-end for number of projects using mainly Django andFastAPI:a. Scottish online auction- Auction platform that allows users to both buy and sell products- Implemented smart auto-bidding logic, scheduled actions andnotifications system. Integrated payment systemb. Swiss investment platform- Investment platform, which allows users to create and fund projects- Users can also sell and buy videos on PPV-basis- Created backend and integrated payment systemc. Luxembourg based Merges & Acquisitions boutique- Platform for buying and selling companiesd. International travel startup- Creating asynchronious microservice using FastAPI- Connect microservice to Postgres (Django database) directly- Implement LLM-integration functionality. Using OpenAI API(ChatGPT), Gemini API, Claude API to create voice chats with AI, createand update content on the website.- Prompt engineeringUsed technologies:- Python- Django, FastAPI, Flask- Django REST Framework- LLM APIs (OpenAI API (ChatGPT),Gemini API, Claude API)- Google Text-to-Speech API- SQL (PostgreSQL, SQLite)- Django ORM, SQLAlchemy- Celery, Apscheduler- Elastic search (elasticsearch_dsl)- Stripe- Websockets

Working on projects mainly using Django, Flask, and Bash scripts: a. "Smart carriage" and multimedia system for passengers of railway b. Creating a video streaming service for a Ukrainian companyFocusing on the back-end side, while doing some front-end tasks as wellUsed technologies:- Django- Django Rest Framework- Flask- Raspberry Pi- SQL (PostgreSQL, SQLite)- Bash (including .sh-scripts)- HTML, CSS, Bootstrap, Javascript - Bash, Docker- Sentry- SSH, VNC- Mist Server- Redmine

Creating back-end for mobile application using Django REST Framework and PostgreSQL

Developed the questionnaire, processed results of more than 100 sociological surveys using mainly SPSS; Personally conducted 4 focus groups, have been as assistant on another 15 and created reports on them;

I had been choosing news, creating headlines, wrote almost 2000 news and small articles; Published news at Facebook and Twitter

Independently organized numerous sociological polls (developed questionnaires, recruted interviewers, etc.), processed their results in SPSS, Excel, ОСАRecruited employees, coordinated their work