FRONTEND & REACT NATIVE ENGINEER

BOLSHOVALEXEY

/(j|t)s|react(-native)?|kotlin|go?/

5 years building web and mobile applications

CODE IS THE MATERIAL, NOT THE GOAL

NISSAN SKYLINE GT-R

BNR34 / 1999

Anyone here?

Smart home

A smart home in one app: control the heating, keep an eye on the house through sensors and cameras, start your car from your phone.

No subscriptions, no fees.

Microline / March 2022–October 2026

ZONT → ZONTNext / Next gen

IoT devices online

ZONT

Heating & smart thingsHome securityCar controlHeating & smart thingsHome securityCar controlHeating & smart thingsHome securityCar controlHeating & smart thingsHome securityCar controlHeating & smart thingsHome securityCar controlHeating & smart thingsHome securityCar control

React / Redux / TypeScript / Cordova / Python

Led frontend development of the React web app and its Cordova-based mobile version

React Native / Expo / TypeScript / Redux / WebSocket / Python / Kotlin

Started as a redesign of the old app — grew into a new smart-home concept, built from scratch solo.

zont.online Google Play

Design system & UI kit from scratch
Cordova → React Native / Expo migration
Widgets, Siri / Apple Shortcuts, Bluetooth and local Wi-Fi control
Real-time data architecture with WebSocket
Python backend adapted to the new architecture

Before / Cordova

01 Design system

03 Expo

02 Cordova → RN

04 FSD

Timvex

Electron / Redux / React Native / Expo / Modbus / Cyphal

PLC editor / visual programming (FBD)

Built the FBD editor and device communication protocol: a block diagram becomes a program for the controller.

timvex.com ↗

Off the clock

My own projects

Vela

Personal finance & investment management: track your money and payouts over time, with shared accounts — all in one place.

nothing here

Kotlin Multiplatform / Swift / Go

In progress

Where it started / 2021

slider-plugin

My first serious dive into architecture: a range-slider plugin on MVP + Observer, fully unit-tested (Jest) with a documented API.

TypeScript

github ↗

toxin

A hotel-booking UI built as a full component kit — my first proper design system, hand-rolled on SCSS / Pug / Webpack.

JavaScript / SCSS / Pug / Webpack

github ↗

bolshov@barghest: ~

$ neofetch

                   -
                  .o+
                 'ooo/
                '+oooo:
               '+oooooo:
               -+oooooo+:
             '/:-:++oooo+:
            '/++++/+++++++:
           '/++++++++++++++:
          '/+++ooooooooooooo/'
         ./ooosssso++osssssso+'
        .oossssso-''''/ossssss+'
       -osssssso.      :ssssssso.
      :osssssss/        osssso+++.
     /ossssssss/        +ssssooo/-
   '/ossssso+/:-        -:/+osssso+-
  '+sso+:-'                 '.-/+oso:
 '++:.                           '-/+/
 .'                                 '/

bolshov@barghest

OSArch Linux? I use Arch, btw

WMHyprland

EDITORNeovim

CLIClaude Code / Codex

KEYBOARDCharybdis (QMK)

$ stack --interactive

ZONT / ZONTNext / Timvex

$ cat soft.txt

Systems thinking / Taxonomy enthusiast / Obsessed with naming / I love deleting code

$ ▌