Taras S. — Full Stack JavaScript Software Engineer

Vetted expert in Full Stack Web (10.0 yr.), Front-End Web (10.0 yr.).

Last verified on March, 2026

Senior

English C1

Core Skills

Bio Summary

10+ years building full-stack web applications for enterprises of various sizes. Experience spans frontend and backend development, API design, and working with both relational (PostgreSQL, Oracle) and NoSQL (MongoDB) databases. Strong foundation in JavaScript/TypeScript ecosystem with React and Node.js.

Technical Skills

Programming Languages	JavaScript, TypeScript
JavaScript Libraries and Tools	Electron, Enzyme, ES6, Mobx, NPM, Redux, Webpack, Yarn
JavaScript Frameworks	Express, jQuery, Node.js, React
Mobile Frameworks and Libraries	TestCafe
Databases & Management Systems / ORM	MongoDB, NoSQL, Oracle Database, PL/SQL, PostgreSQL
UI Frameworks, Libraries, and Browsers	CSS, CSS3, HTML, HTML5, jQuery, UI
Cloud Platforms, Services & Computing	Azure
SDK / API and Integrations	API
Deployment, CI/CD & Administration	Axios, GitLab CI
QA, Test Automation, Security	Cypress, Jest, QA
Virtualization, Containers and Orchestration	Docker
Version Control	Git, GitHub, Github Actions, GitLab
Mail / Network Protocols / Data transfer	IP
Collaboration, Task & Issue Tracking	Jira
Methodologies, Paradigms and Patterns	STLC
Third Party Tools / IDEs / SDK / Services	Yarn
Other Technical Skills	Backend, Relational

Accounting System — Full-Stack Developer

Duration: Mar 2024 - Oct 2025

Technologies: React, Node.js, PostgreSQL, Git, Yarn, Webpack, GitLab

Responsibilities:

Developed accounting system features
Fixed bugs and supported testing process

IP Telephony Solutions — Full-Stack Developer

Duration: Mar 2021 - Mar 2024

Technologies: Electron, React, MobX, Node.js, Express, MongoDB, Git, Yarn, Webpack, GitHub, GitLab, Azure

Responsibilities:

Developed features for an existing IP phone desktop application
Initiated development of a client services administration web app
Fixed bugs and supported testing process

Online Food Ordering and Delivery — Frontend Developer

Duration: Apr 2019 - Mar 2021

Technologies: TypeScript, React, Redux, Jest, TestCafe, HTML, CSS, Git, npm, Yarn, Webpack

Responsibilities:

Developed new application features
Wrote automated tests
Fixed bugs and supported testing process
Communicated directly with the customer

Binary Options Trading System — Frontend Developer

Duration: Jan 2018 - Apr 2019

Technologies: TypeScript, JavaScript (ES6+), React, Redux, Axios, Jest, Enzyme, HTML, CSS, Git, npm, Yarn, Webpack

Responsibilities:

Developed UI widgets for the trading web application using TypeScript with React and Redux
Wrote automated tests
Created technical documentation
Communicated with the customer

Corporate Grade System — Full-Stack Developer

Duration: May 2015 - Jan 2018

Technologies: JavaScript, jQuery, React, Redux, HTML, CSS, Oracle PL/SQL, Git, Yarn, npm, Webpack

Responsibilities:

Developed web applications using JavaScript, jQuery, and React/Redux
Wrote technical documentation
Collaborated with business analysts and QA from the customer side

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Why Upstaff

Upstaff is a technology partner with expertise in AI, Web3, Software, and Data. We help businesses gain competitive edge by optimizing existing systems and utilizing modern technology to fuel business growth.

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