Senior frontend engineer

Fred Lunjevich

I build production React, TypeScript and Next.js applications for ecommerce, headless CMS and API-heavy product work.

I'm working on expanding my expertise withNode.js, API design and backend architecture so I can own more of the product from interface to release.

  • React
  • TypeScript
  • Next.js
  • Headless commerce
  • APIs
  • Technical leadership

Frontend depth

React, TypeScript, Next.js and accessible UI systems.

Commercial context

Ecommerce, CMS integrations, catalogues and release workflows.

Product ownership

Practical trade-offs from requirements through production support.

Full-stack direction

Node.js, APIs, auth, databases and backend architecture.

Selected work

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Movora ecommerce and global siteWork

Lead Developer - multilanguage ecommerce platform and global websites

Movora ecommerce and global site

  • React
  • TypeScript
  • Next.js
  • GraphQL
  • Big Commerce

Led development of a multi-region ecommerce platform serving US, Canada and Europe from a single Next.js codebase. Implemented advanced ecommerce functionality including discount validation, coupon application, persistent cart logic and customer certification-based purchasing controls. Included Vercel management.

Hand Engine softwareWork

Hand Engine motion capture glove software - StretchSense.

Hand Engine software

  • React
  • TypeScript
  • Redux
  • Bootstrap
  • RxJS
  • Node.js

Frontend development for a rebuild of StretchSense Hand Engine, including React and TypeScript UI work, Redux state implementation, info panels, feature windows and custom hand implementations with Three.js.

Hand Engine glove calibration UIWork

An example Hand Engine feature including the UI and state that I built.

Hand Engine glove calibration UI

  • React
  • TypeScript
  • Redux
  • Bootstrap
  • RxJS
  • Node.js

UI implementation for calibrating StretchSense Fidelity gloves. The revision of glove is established upon device connection, which switches the UI for calibration. This image shows the manual calibration for an older revision of StretchSense gloves.

Recent writing

i think, therefore
I write

I post about being a developer, React, Next.js, TypeScript, AI and other topics that interest me.

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