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Sergii Demianchuk
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Date Of Birth
25 Dec 2025
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Skills
104
Web application security
AWS Fargate & DevOps workflows
Team Management & Mentorship
Rissa Systems
MySQL Optimization & Scaling
Applied AI Solutions
Backend System Design
Feature Development & Implementation
Python
Secure & Confidential Communication Systems (NSKZ)
Web & Software Engineering
Search & Data Systems
AWS Cloud Architecture & Infrastructure Migration
Network Equipment Configuration & Management
Security Monitoring & Incident Response
Elasticsearch Administration & Architecture
Memory & Resource Optimization
Integration & Application Support
Technical Documentation & Reporting
AWS Cloud platforms
Microservices Architecture
Machine Learning for Transportation & Optimization Problems
Programming & Development
System & Endpoint Security
Performance & Optimization
Cisco Networking Equipment
Digital Communication Systems
Security & Monitoring
Data Science Fundamentals
English
PHP
Project & Delivery Management
Cisco Systems
Network Infrastructure
CloudWatch monitoring
React Native Mobile Application Development
System Architecture & Cloud
Technical Team Leadership
XML
html
Cisco Device Configuration
Network Security & Management
Network Infrastructure Setup & Maintenance
Monitoring & Maintenance
Jenkins CI/CD pipelines
CMS Wordpress
Power Supply Systems Maintenance
PHP Development
Performance & Load Optimization
Networking Fundamentals
Python Programming
Telecommunications Engineering
programming
Data & Application Security
IT networks
System Refactoring & Modernization
Client Advisory & Solution Design
Recommendation Systems
Docker containerization
Vue.js (Reactive Components)
Full-stack web development
jQuery
PBX Configuration & Maintenance
ActionScript
Redis Caching & Replication
Technical Management
MySQL Replication
Scalable Distributed Systems
Government & Secure Communication Systems (NSKZ)
General & Soft Skills
Automated Testing & Deployment
Vector Search & AI-based Retrieval
Zend Framework
System Troubleshooting & Maintenance
Symfony
Data Modeling & Insights
Terraform infrastructure automation
High-Availability & Performance Optimization
API Development & Integration
Cryptography
Network Configuration & Administration
Cloud & DevOps
IT Consulting
Web Application Design
Multi-currency & International Payment Systems
Frontend Architecture Redesign
MySQL
Government Communication Systems
ElasticSearch
Complex Systems Architecture
XDM Equipment
Network Security
Cisco Security Solutions
Digital Systems Setup & Maintenance
Environment Configuration & Release Management
Network Security Fundamentals
JQuery
Project Planning & Work Organization
General Skills
Symfony Framework
Responsive Web Design
API Design & Integration
Automatic Switching Systems for Communication Channels
Elasticsearch (Search, Analytics, Vector Search)
Experiences Timeline
Work
Education
Certificate
2000-2004
2005-2009
2010-2014
2015-2019
2020-2024
work
Udemy Instructor
Udemy
Nov 2021 · Present
Systems Architect
Clicktrans
Dec 2018 · Present
CTO
Clicktrans
Dec 2017 · Present
Technical Team Lead
Clicktrans
Dec 2017 · Aug 2021
Web Developer
Freelancer
Aug 2005 · Aug 2015
IT Manager
Helpi Group
Mar 2012 · Apr 2015
IT Engineer
Main WorkGovernmental telecommunication networks
Aug 2007 · Aug 2012
IT Engineer
Govermental telecommunication networks
Aug 2007 · Aug 2012
education
Master of Science in Information Technology
EVELTHON Method Institute
Aug 2002 · Aug 2007
certificate
Computer & network security
Niebezpiecznik
https://niebezpiecznik.pl
Elasticsearch Advanced Administration, Monitoring and Maintenance
NobleProg US
https://nobleprog.com
Intro to Python for Data Science Course
DataCamp
https://datacamp.com
Securing networks with Cisco
Corporate Bridge Consultancy Pvt Ltd
https://educba.com
Cisco ICND1 & Cisco ICND2
Knowledge Center
https://knowledge-center.org
Organizations
No Data Available