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herka fitra

@herkafitra

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Senior Frontend Engineer building scalable React products with TypeScript, performant UX, and ownership.

Indonesia

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What I'm looking for

I’m looking for a team where I can take ownership of frontend architecture in React/TypeScript, deliver measurable performance improvements, and collaborate closely with UX/engineering. I want room to grow into fullstack ownership while keeping code maintainable.

I’m a Senior Frontend Engineer with 7+ years building scalable web products across adtech, insurtech, and HR-tech. My strength is React ecosystems—especially TypeScript—and component architecture that keeps teams moving fast without breaking delivery quality.

At Micro Ad Indonesia, I owned the full frontend rebuild of the Ads Performance dashboard, migrating a fragile legacy codebase to a modern React + React Query + Ant Design stack. That work cut data transfer latency from 6s+ to under 1s and resolved top recurring client complaints within a single quarter.

I also drove measurable product impact by reducing partner dashboard complaints by 90% through a flexible dynamic chart system. In the same role, I standardized early-stage prototyping to cover 80% of requirements upfront, reducing mid-sprint scope changes and rework.

Since 2022, I’ve expanded into fullstack development on independent projects, taking on backend API design, database integration, and deployment alongside frontend. I’ve delivered high-performance experiences end-to-end, from Next.js SEO fixes and 100% mobile responsiveness to React SPA migrations, Nuxt-based component libraries, and Gatsby marketing sites.

Experience

Work history, roles, and key accomplishments

Current

Freelance Full-Stack Dev

Current

Upwork

Jan 2022 - Present (4 years 5 months)

Owned end-to-end full-stack development for personal and client projects, including backend API design, database integration, and deployment alongside frontend. Built the digital presence and marketing infrastructure for Vanam Artha (2023) and delivered a full website and booking flow for NeruEvents (2024).

Full Stack Developer API Design Database Integration Deployment Frontend Development Marketing Website Development API Integration

Frontend Engineer

MicroAd Indonesia

Feb 2022 - Nov 2023 (1 year 9 months)

Owned the full frontend rebuild of the Ads Performance dashboard, migrating from a fragile legacy codebase to a modern React + React Query + Ant Design stack, cutting data transfer latency from 6s+ to under 1s and resolving the top recurring client complaints within a single quarter.

ReactJS Tanstack Query Next.js Laravel TailwindCSS MySQL PostgreSQL Zustand Unit Testing

Frontend Engineer

Zalents

Feb 2021 - Aug 2021 (6 months)

Led the architectural migration of the main dashboard from a monolithic MVC structure to a React SPA
dramatically reducing developer onboarding time and decoupling frontend from complex backend rendering
logic. And collaborated with UX designers to implement an Ant Design system, delivering a consistent interface that improved new user activation and contributed to new subscription sales.

ReactJS Tanstack Query MySQL PostgreSQL styled components Ant Design

Frontend Engineer

Qoala App

Mar 2020 - Oct 2020 (7 months)

Established a component library aligned with Qoala's design system using NuxtJs, enabling faster and more
consistent feature delivery across product teams. And Built the internal marketing platform from the ground up allowing the marketing team to publish insurance promos in real time without engineering dependencies.

styled components Vue Vuex Nuxt.Js Vuetify

Frontend Engineer

Thiktive

Nov 2019 - Feb 2020 (3 months)

Built a high-performance marketing site using GatsbyJs with optimized data transitions and fast load times. And designed a new UI using Adobe XD that translated directly into a client's product roadmap bridging design and strategic planning.

styled components ReactJS React Gatsby Redux