Minsk, Belarus

Kostya Betenya

Software engineer building web platforms, mobile apps and products of my own.

now: WealthCharts — broker platform integrations
building: UniTime — schedules for multiple universities
based in: Minsk. BSUIR, Computer Systems and Networks

About

I am a fullstack engineer. By day I work at Yumasoft on fintech products: I started on DataForge, a DWH platform, and now work on WealthCharts, where I onboard new brokerage firms into the product and maintain existing integrations. The toolkit around that is React, Nest.js and a solid chunk of AWS.

In the evenings I run Vazon Hub, my own mobile app studio. It started with Bsuir Time — a BSUIR schedule app with widgets, an Apple Watch app and cloud sync — then came Centry, a personal finance tracker, and now I am building UniTime, a schedule platform for multiple universities at once.

I study Computer Software Engineering at BSUIR. I enjoy low-level things — I wrote games and a VS Code extension for FASM — I self-host my services on a VPS with Dokploy and Docker, and I am steadily digging into data analytics.

Experience(2 years 2 months)

present

202420252026

Vazon Hubown venture

Founder, CTO

Apr 2026 — present (7 months)

Building a mobile app studio: Bsuir Time, Centry and UniTime — from idea to release on the App Store and Google Play.
React Native / Expo with native modules: WidgetKit and Glance widgets, an Apple Watch app, cloud sync via iCloud and Google Drive.
Accessibility (VoiceOver, large text, high contrast), in-app purchases, ASO.

React Native, Expo, TypeScript, Swift, WidgetKit

Yumasoft

Full Stack Engineer

Feb 2026 — present (9 months)

DataForge (February — May): a DWH platform built with React and Nest.js with TypeORM.
WealthCharts (since May): broker platform integrations — onboarding new firms into the product and maintaining existing integrations.
Day-to-day AWS: EC2, ECS, Lambda, DynamoDB, S3, ECR and code pipelines.
Set up a self-hosted GitLab with CI/CD and security rules for internal repositories.

React, Nest.js, TypeORM, AWS, GitLab CI/CD, Ant Design

Farmaservice

Frontend Engineer

May 2025 — Sep 2025 (5 months)

An ERP system for accountants: inventory and goods management for enterprises.
Query architecture with axios, state with zustand, charts with recharts.
Frontend PDF report generation and virtualization of large tables.

React, TypeScript, Zustand, Recharts, Tailwind CSS, Ant Design

Blackout Studiopart-time

Full Stack Engineer

Jan 2025 — Aug 2025 (8 months)

The company’s internal CRM: React, Redux Toolkit, MUI.
WebSocket chat and notifications, Telegram bot integration.
REST API with Node.js and Express, S3 storage, PWA support.

React, Redux Toolkit, Node.js, Express, WebSocket, MUI

EmotionIQpart-time

Software Engineer

May 2024 — Feb 2025 (10 months)

A web platform for analytics and statistics: frontend plus a REST API on Node.js with Express.
CI/CD setup, UI/UX prototyping in Figma, S3 file storage.
Took part in negotiations and spoke at public events to attract investment.

React, Node.js, Express, Tailwind CSS, Figma

BSUIReducation

BSc, Computer Software Engineering

Sep 2023 — Jul 2027