KR
KevinRomario.com
Open to new opportunities

Scaling Businesses
through Web

A Front-End Developer who excels at bridging complex business logic with scalable digital architecture. With 5+ years of experience, Kevin transforms ambitious ideas into high-performance web products for global companies.

Next.js
React
TypeScript
5+Years Experience
Developer Profile
Available for freelance
About Kevin

Code with a Business Mindset

Kevin bridges the gap between structured business logic and high-performance engineering.

  • Business-Driven: Leveraging a finance and marketing background to align technical decisions with tangible company goals.
  • Tech Mastery: 5+ years specializing in React, Next.js, and TypeScript to build scalable, enterprise-grade front-end systems.
  • Quality First: Committed to clean code and meticulous architecture that ensures long-term maintainability and performance.

Based in Yogyakarta, Indonesia.

Outside the Terminal

Precision Tracking & Maintenance

I apply the same meticulous attention to detail from my code to my daily life, ranging from personal finance to vehicle maintenance. To me, optimizing systems is all about precision and efficiency.

Fitness & Training

Consistency in strength training keeps my mind sharp and energy high. I believe the discipline required in the gym translates directly to the focus and persistence needed to solve complex technical challenges.

Coffee Exploration

A good cup of hand-crafted coffee is a ritual in patience and precision. Exploring Yogyakarta’s specialty coffee scene keeps me inspired and connected with the local creative community.

Experience

Career Journey

Frontend Engineer

Current
Aug 2025 — Present
Remote, Indonesia

Contributed to the development and maintenance of Clicky.id using Next.js and Material UI, ensuring scalable and maintainable frontend architecture. Built responsive and accessible UI components to deliver a seamless user experience across desktop and mobile devices.

  • Collaborated closely with backend engineers to integrate APIs efficiently and ensure smooth data flow
  • Worked alongside designers to maintain UI/UX consistency and implement pixel-accurate interfaces
  • Ensured scalable and maintainable frontend architecture for Clicky.id
ReactNext.jsJavaScriptMaterial UIGitHub
Sep 2021 — May 2025
Yogyakarta, Indonesia

Contributed to the development and maintenance of multiple web and mobile applications across organizational transitions (GoTo Logistics to ByteDance). Delivered new features and improved system reliability for Warehouse Management and Workforce Management platforms.

  • Optimized the Integrated Business Planning application, reducing operational workload by approximately 10 hours per analyst per week
  • Maintained and enhanced the official logistics website, including resolving spam issues on the tracking page
  • Ensured stable and scalable frontend solutions during major organizational transitions
ReactReact NativeExpoModern.jsNext.jsTypeScriptChakra UIXState

Full-stack Engineer

Jul 2021 — Sep 2021
Jakarta, Indonesia

Contributed to the development of the company's investment crowdfunding platform, building core frontend features using JavaScript and Next.js.

  • Collaborated on backend integration using Express.js to ensure seamless data flow and reliable platform functionality
  • Supported the delivery of a responsive and user-friendly web experience aligned with regulatory requirements
  • Developed core features using Next.js for a crowdfunding sector startup
Next.jsExpress.jsTypeScriptBootstrapMySQL

Frontend Engineer

Fast8 Group·Full-time
Feb 2021 — Jun 2021
Jakarta, Indonesia

Contributed to the ongoing development of the Gadjian web and mobile applications, delivering new features aligned with workforce management needs.

  • Identified and resolved bugs to improve system stability and ensure a smooth user experience across platforms
  • Maintained and enhanced application performance to support reliable employee attendance and HR management
  • Built cross-platform features using React and React Native
ReactReact NativeJavaScriptBootstrapGitHub
Skills

Technical Expertise

Core Languages

JavaScript

ES2024, async/await, closures

TypeScript

Generics, utility types, strict mode

HTML / CSS

Semantic, accessibility-first

Frameworks & Libraries

Next.js

App Router, SSG, ISR, Server Actions

React

Hooks, Context, React 19

Express.js

RESTful APIs, Middleware, Node.js

Tailwind CSS

v3/v4, design systems, tokens

Tools & Infrastructure

Docker

Containerization, Docker Compose

Git / GitHub

CI/CD, GitHub Actions, branching

Figma

Design-to-code, components, tokens

PostgreSQL

Query optimization, schema design

Also familiar with

ViteRedux ToolkitReact QueryStorybookVitestPlaywrightVercelGraphQLREST APIs
Projects

Project Portfolio

Creator Monetization & Links Platform
Live

Clicky

Creator Monetization & Links Platform

No-code monetization platform for creators to build bio links, sell digital products, and accept local payments with seamless checkout engine.

Next.jsJavaScriptMaterial UI
Warehouse Management System

GoTo Logistics

Warehouse Management System

Maintained WMS web and Android apps for enterprise supply chain, optimizing large-scale logistics operations and real-time inventory tracking.

ReactTypeScriptChakra UI
Contact

Ready to Scale Your Digital Product?

Whether you need to transform complex business logic into a seamless web application or build a highly scalable front-end architecture, I’m here to help. Currently open to freelance partnerships and strategic engineering roles. Drop a message, and let’s discuss your goals.

Location

Yogyakarta, Indonesia

Timezone

WIB (UTC+7)

Prefer a direct conversation?

Reach out via LinkedIn or chat directly on WhatsApp

holakevinromario@gmail.com