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Profile
Over 20 years of experience developing C++ and Python tools for mathematical
modeling and data analysis across the nuclear industry, healthcare, and medical
informatics, plus 3+ years as a full-stack developer in FinTech and 1 year as a
backend developer in an international IT company. Ph.D. Seeking a long-term or
project-based role as a Python Backend Developer, Python Full-Stack Developer,
or Data Scientist. Passionate about big data, AI, machine learning, and web app
Sergiy Begun development.
Python Backend / Full-Stack Work Experience
Developer & Data Scientist
Python Backend Developer (part-time, project) Sep 2025 – Present
go-te.co — data.kyivcity.gov.ua Kyiv, UA
Contact
Leading developer of the Kyiv city open-data web portal. Stack: CKAN, Flask,
Phone [открыть контакты](см. выше в блоке «контактная информация») Celery, Redis, Docker, Kubernetes, Nginx, PostgreSQL, SQLAlchemy, Alembic,
Email [открыть контакты](см. выше в блоке «контактная информация») TeamCity (CI/CD).
Telegram @Sergiy_Begun Senior Researcher (part-time) Nov 2024 – Present
Location Kyiv, Ukraine Inst. of Math. Machines & Systems Problems, NASU Kyiv, UA
AI technologies for dynamic risk assessment; integrating computer vision and
Links LLMs. Web services with Python, Django, React, Node.js, Neo4j.

LinkedIn sergiy-begun-14185630b Senior Researcher / Python Full-Stack Dev May 2023 – Present
SI ”IPH NAMSU” Kyiv, UA
GitHub Sergiy-Begun
Repository with chatbot (Django, Node.js, Neo4j, LLMs); health.gov.ua (Word-
Core Skills Press, PHP, Elasticsearch, Redis, MariaDB); journal site dovkil-zdorov.kiev.ua
(OJS, PHP, PostgreSQL).
• Python (OOP, async, multiprocess-
Python Full-stack Developer Sep 2020 – Jan 2024
ing)
Cryptocurrency exchange — richamster.com Kyiv, UA
• C++ (Embarcadero)
Backend and frontend for FinTech services: Django, Vue.js, OTP, JWT, Celery,
• Django, Flask, FastAPI, DRF DRF, blockchain integrations, secure fiat/crypto payments, PostgreSQL.
• CKAN, REST, SaaS, GraphQL
Postdoc Researcher Sep 2022 – Aug 2023
• Celery, Nginx, Gunicorn Taras Shevchenko National University of Kyiv Kyiv, UA
• Docker, Kubernetes, OpenShift
Developed and tested a web service; published a peer-reviewed article
• Git, OTP, JWT, Google Analytics (doi:10.1142/S0218539323500365).
• Pandas, NumPy, SciPy, Matplotlib
• AI / ML / LLM / AI-agents
Education
Postdoc Researcher 2022 – 2023
Frontend Faculty of Information Technology, Taras Shevchenko National University of Kyiv
Kyiv, UA
• React / Redux / Hooks / Vite / Next.js
Ph.D. in Physics and Mathematics 2004
• Vue.js, Node.js, jQuery
Taras Shevchenko National University of Kyiv
• HTML, CSS, XML, WebSocket
(socket.io) M.S. in Physics 1997
Taras Shevchenko National University of Kyiv
• Figma

Databases
Selected Courses
IBM: Containers w/ Docker, Kubernetes & OpenShift; Software Engineering (hon-
• PostgreSQL, MySQL, MariaDB
ors); Cloud Computing; Git & GitHub; React.
• MongoDB, Redis, Elasticsearch UC San Diego: Bioinformatics I & II (honors).
• Neo4j, SQLAlchemy, Alembic, Kaggle: Python, Pandas, Intro/Intermediate ML, Data Visualization, SQL.
blockchain

Cloud
• AWS, DigitalOcean, Hetzner, Con-
tabo

Methodology
• Agile, Scrum, Jira, Confluence

Languages
• English (B1–B2)