# Марина User

Марина User is a remote worker on Himalayas, Frontend Developer at Aetsoft, based in Belarus.

Source: https://himalayas.app/@user580

```text
Senior Frontend Developer at Aetsoft who improved React Native app load time by 50% and achieved 85% test coverage.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Belarus |
| Authorized to work in | Belarus |
| Salary expectations | 60k+ USD |
| Job categories | Front End Developer, Full Stack Developer, Team Lead |
| Skills | Frontend Development, React, React Native, JavaScript, TypeScript, Next.js, Redux, NodeJS, NestJS, ExpressJS, REST APIs, PostgreSQL, MongoDB, MySQL, Jest |

## About

```text
At Aetsoft, I architected React and Next.js applications, integrated third-party services including Stripe, and built and tested React Native components. I also improved initial app load time by 50% and achieved 85% test coverage across core modules.

At iTechArt Group, I led a six-person team as TeamLead and designed custom back-office features. Earlier there, I developed NestJS and PostgreSQL APIs and contributed to an offline-capable React Native application.

At SkillCrucial.com, I virtualized a data grid to handle 10,000+ rows and reduced server response times for training modules by about 35%. As a freelance Frontend developer, I created JavaScript interfaces and resolved more than 50 production issues.
```

## Experience

### Frontend Developer

Aetsoft. Dec 2021 - Jun 2026

```text
Architected 5+ React/Next.js applications from scratch, integrated 15+ third-party services including Stripe and OAuth2, and optimized React Native performance resulting in a 50% improvement in initial app load time. Achieved 85% test coverage across core modules using Jest and React Testing Library.
```

Skills: React, Next.js, React-Native, TypeScript, Redux-Saga, Redux-toolkit, Tanstack-Query, Jest, Material-UI, Git, Stripe, Claude-Code

### TeamLead

iTechArt Group. Jun 2021 - Dec 2021

```text
Led a 6-person cross-functional team through the full feature delivery cycle, designed and implemented custom back-office features, standardized front-end development practices, and mentored 5 junior developers resulting in 3 promotions.
```

Skills: React, Next.js, TypeScript, Redux-Saga, Jest, CSS-in-JS, ESLint, Enzyme

### Full Stack Developer

iTechArt Group. Jul 2020 - Jun 2021

```text
Developed and maintained REST APIs using NestJS and PostgreSQL, implemented core components for React Native app, set up navigation, refactored legacy state management, and built an offline-capable React Native application.
```

Skills: React, React-Native, TypeScript, Material-UI, Redux-Saga, NodeJS, NestJS, Docker, PostgreSQL, Jest, ESLint

### Full Stack Developer

SkillCrucial.com. Aug 2019 - Jun 2020

```text
Virtualized a data grid component to handle 10,000+ rows, re-engineered API communication with request chunking reducing server response times by ~35%, standardized development environments, and implemented unit tests.
```

Skills: React, Thunk, Material-UI, NodeJS, ExpressJS, MongoDB, ESLint, Babel, Webpack, Mocha, Chai

### Frontend Developer

Freelance. Oct 2018 - Aug 2019

```text
Designed and developed animation components and drag-and-drop using jQuery UI, implemented multi-layer modular application architecture, created valid HTML/CSS markup templates, and debugged 50+ production JavaScript issues.
```

Skills: JavaScript, React, JQuery-UI, Material-UI, HTML5, CSS, PWA

## Education

### Anthropic

Claude Code 101, Claude Code

```text
Completed Claude Academy: Claude Code 101 certification in September 2026.
```

### Academind by Maximilian Schwarzmüller

Claude Code - The Practical Guide, Claude Code

```text
Completed the Claude Code - The Practical Guide course in May 2026.
```

### Belarusian State Economic University

```text
Attended Belarusian State Economic University in Minsk, Belarus, completing studies in 2014.
```

## Tech stack

- ESLint
- React Native
- Sass
- MySQL
- PostgreSQL
- MongoDB
- Node.js
- Next.js
- NestJS
- Bootstrap
- Material-UI
- Jira
- Babel
- styled-components
- Storybook
- Ant Design
- Jest
- Mocha
- Chai
- Enzyme
- React
- jQuery UI
- Webpack
- JavaScript
- ExpressJS
- Stripe
- Trello
- Redux
- redux-saga
- TypeScript
- React Testing Library
- OAuth2
- Git
- Docker
- TanStack Query
- Claude Code
- Redux Toolkit

To contact Марина, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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