Open to opportunities in Finland

Arsenii
Marchenko.

Software development. Cybersecurity & IoT.

I build React interfaces and Python-based integrations, with a security-minded approach and an interest in DevOps and cloud engineering.

View projects View CV Contact me

Based in Kuopio · Seeking roles in Helsinki, Espoo & Vantaa

Portrait of Arsenii Marchenko
Frontend / Python / SecurityFinland
40+
Features deliveredMurkhasya Studio
10+
Reusable UI componentsReact & TypeScript
50%
Less lab deployment timeSavonia internship

01 / Selected work

Selected projects

From business interfaces to industrial security research.

Featured thesis · In progress

Dynamic Industrial
Honeypot for ICS/OT

A dynamic industrial environment for observing attacks and tracing how they affect a simulated plant.

My responsibility

Python middleware development
and AI integration

Developed by a three-person thesis team, with a dedicated workstream for my Python middleware and AI integration.

  • Python
  • Conpot
  • ICS/OT
  • AI integration
Explore my contribution
  • Developing middleware between protocol-facing interfaces and shared plant state, including command validation and persistent updates.
  • Integrating a background AI process with a virtual boiler model: temperature, pressure, water level and two pumps.
  • Keeping actual process state separate from spoofed sensor readings so changes can be investigated.

System context: Modbus/TCP and Siemens S7comm, structured attacker-action logs, an HMI dashboard and ELK analysis. These describe the wider team system.

System overviewICS / OT

Industrial interface

Conpot

Modbus/TCP · Siemens S7comm

My focus

Python

Middleware & AI integration

Validate commands · Persist state

Shared plant state

Boiler · Sensors · Pumps

AI process

Dynamic state updates
Structured logs · HMI · ELK

Development architecture · Team project

Multi-node honeypot security lab environment

Cybersecurity / Network lab

Multi-node honeynet

An isolated environment for controlled attack simulations, intrusion detection and analysis of attacker behaviour.

  • Cowrie
  • Suricata
  • OpenWrt
Implementation details
  • Designed network topology and isolation for SSH/Telnet honeypot emulation.
  • Ran authorised scans and brute-force simulations with Nmap and Hydra; inspected traffic and intrusion events.
  • Analysed attacker behaviour and contributed to dashboard visualisation.

This educational honeynet is separate from my industrial honeypot thesis.

View on GitHub
React point-of-sale application interface

Frontend / Business application

Point-of-sale system

A component-based React interface for cart management, pricing calculations and transaction workflows.

  • React
  • JavaScript
  • React Hooks
Implementation details
  • Built reusable components with clearly separated UI logic.
  • Implemented dynamic carts, transaction flows and pricing calculations.
  • Managed state with React Hooks and improved responsive behaviour.
View on GitHub
Financial reporting application with client and revenue dashboards

Frontend / Data interfaces

Financial reporting application

Revenue and client-tracking dashboards that turn structured business data into clear, interactive reports.

  • React
  • JavaScript
  • Reporting
Implementation details
  • Developed revenue dashboards and client-tracking views.
  • Built reusable components and conditional reporting layouts.
  • Managed state updates and refined reporting usability.
View on GitHub
Fitness planning Android application built with Jetpack Compose

Mobile / Android

FitnessApp

A fitness planning application with a declarative interface, local persistence and complete create, read, update and delete workflows.

  • Kotlin
  • Jetpack Compose
  • Material 3
Implementation details
  • Created a declarative interface using Jetpack Compose.
  • Implemented CRUD workflows and JSON-based local persistence.
  • Used custom state management and unidirectional data flow.
View on GitHub

02 / Experience

Experience

Jan 2026 - Present

Savonia UAS

Kuopio, Finland · Internship

Cybersecurity Research Engineer

  • Developed 5+ web interfaces for microcontroller monitoring in cyber forensics, reducing educational lab deployment time by 50%.
  • Implemented authentication and data validation, reducing the risk of successful training attacks on the lab environment by 20%.
  • Automated hardware data collection with Python, increasing incident processing speed during simulations by 20%.

May 2025 - Nov 2025

Murkhasya Studio

Frontend development

Frontend Developer

  • Led React frontend development for financial reporting and POS applications, delivering 40+ features within deadlines.
  • Built 10+ reusable React/TypeScript components, reducing development time for subsequent interfaces by 35%.
  • Integrated REST APIs and WebSockets, reducing real-time data display latency by 40%; optimised builds and media assets to improve page rendering by 15%.

03 / About & toolkit

Software, systems
& security.

My experience combines frontend development, Python integrations, and hands-on cybersecurity and IoT research. I enjoy connecting usable interfaces with the systems behind them.

In my three-person thesis team, I am responsible for Python middleware development and AI integration for a dynamic industrial honeypot. I am also interested in DevOps and cloud engineering roles.

Education

Bachelor of IT · Information Technology (IoT)

Savonia University of Applied Sciences

Expected graduation: December 2026

Development

Python · React · TypeScript · JavaScript · Django · C++ · Kotlin

DevOps & cloud

Docker · CI/CD · AWS · Linux · Git · GitHub · Bitbucket

Cybersecurity & industrial

Conpot · ELK Stack · Modbus/TCP · S7comm · Wireshark · Nmap · Metasploit · Kali Linux

AI & data

AI integration · Prompt engineering · AI-assisted development · pandas · NumPy · PyTorch

04 / Continuous learning

Certificates

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05 / Get in touch

Let's talk about
what I can build with you.

Open to software development, cybersecurity, DevOps and embedded/IoT opportunities in Helsinki, Espoo and Vantaa.

LinkedIn GitHub View CV

Certificate

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