Hello, I'm

Umanga Deep Shrestha

Senior Frontend Engineer

I build frontend systems that scale.

React · Design Systems · SCSS Architecture · 9+ years

About

Building production frontend for 9+ years

I spent 6+ years as the primary frontend engineer for a logistics SaaS platform serving 100+ carriers across the U.S., where I built the entire React component library, SCSS design system, and developer tooling from scratch across 130+ product screens.

I specialize in React.js, TypeScript, SCSS/SASS architecture, and CSS Custom Properties. I've shipped dark mode across an entire platform, removed legacy dependencies like jQuery and react-bootstrap, resolved frontend security vulnerabilities (SSTI, NoSQL Injection, Prototype Pollution), and integrated AI-assisted development workflows using Cursor and MCP servers into team processes.

I turn complex product requirements into clean, maintainable, pixel-perfect UI.

Tech Stack

What I work with

Core

React.jsTypeScriptJavaScript (ES6+)

Styling

SCSS / SASSCSS Custom PropertiesCSS ArchitectureDesign Systems

UI Libraries

React Data GridReact SelectFormikYup

Tools

GitViteCursor IDEMCP ServersFigma

Practices

Responsive DesignCross-browserAccessibilityFrontend SecurityDark Mode ThemingAI-Assisted Development

Experience

Where I've worked

PortPro

Director of UI/UX

Dec 2019 — Mar 2026

Built the entire React component library, SCSS design system, and developer tooling from scratch. Primary frontend engineer across 130+ product screens spanning the entire platform. 4,256 commits over 6+ years.

Freelance (Upwork)

Frontend Developer

2017 — 2022

23 projects, $10K+ earned, 808 hours, near-perfect ratings. Figma to pixel-perfect code, responsive SaaS UIs, landing pages.

Braindigit

Frontend Developer

2018

Built 20+ responsive websites. Developed eLearning platform frontend.

Jyaasa

Frontend Developer

2017 — 2018

Custom modular frontend code, Ruby on Rails frontend integration, SASS.

Pagoda Labs + Swiss Magic

Web Developer

2015 — 2016

WordPress development, PHP, ecommerce (OpenCart).

Projects

What I've built

Full-Stack Frontend Platform

Primary frontend engineer for an entire logistics TMS. Built and maintained 130+ screens: dispatcher board, load management, billing, driver planner, tracking, reports, settings, email, carrier management, appointments, and more. 4,256 commits over 6+ years.

ReactSCSSPlatform EngineeringComplex UI

Design System & Component Library

81+ reusable components from scratch: modals, data grids, custom selects, loaders, tooltips, chat UI, form components, icon library, dark mode toggle, route timeline indicators.

ReactSCSSCSS Custom PropertiesComponent Architecture

Platform-Wide Dark Mode

Dark mode across 130+ screens using CSS Custom Properties with theme switching, third-party component theming, and cross-component consistency.

CSS Custom PropertiesSCSSThemingReact

AI Hub & AI Workbench

Built from scratch: AI Chat, AI Workbench, AI Agents, AI Control Tower with Document Validation, dashboard builder with drag-and-drop, SOP confirmation workflows.

ReactComplex UIChat InterfaceDrag & Drop

Embedded Email System

Full email client UI: grid/card views, composer with rich text editor, tags/labels, mailbox settings, context menus, collapsible recipients.

ReactJoditComplex StateUI Architecture

jQuery Removal & Security

Removed jQuery across 7 phases (29+ files). Resolved SSTI, NoSQL Injection, Prototype Pollution, CVE-2025-7783.

RefactoringSecurityMigrationCode Quality

Impact

0+

Years Experience

0+

GitHub Contributions

0+

Years One Platform

0

Freelance Projects

0

Freelance Hours

0+

Websites Built

0

Near-Perfect Reviews

Services

What I can do for you

Figma to Code

I convert your Figma/XD designs into clean, responsive, production-ready React or HTML/CSS. Pixel-perfect, every time.

React Development

Complex dashboards, data-heavy UIs, SaaS frontends. I build the kind of interfaces that enterprise products need.

Design Systems

Component libraries, utility class systems, theming, documentation. I build the foundation your frontend team works on.

Frontend Fixes

CSS bugs, responsive issues, performance problems, legacy code cleanup. Fast turnaround.

Contact

Let's work together

I'm available for freelance projects, consulting, and full-time opportunities. If you need a senior frontend engineer who cares about craft, let's talk.

Send me an email