Smart UI

About the Project

We are starting a long-term collaboration with a client on a full-time front-end role.

This is a legacy project with a large existing codebase written without modern frameworks - no React, no Next.js.

The front-end is based on HTML, CSS (possibly SASS), and vanilla JavaScript.

Your main responsibilities will include:

• Working with an existing legacy codebase.
• Implementing new features and maintaining existing ones.
• Ensuring pixel-perfect implementation according to provided designs.
• Optimizing and refactoring existing front-end code when necessary.
• Collaborating with other developers through Git-based workflows.

Requirements

• 3+ years of experience in front-end development.
• Strong proficiency in JavaScript (ES6+), HTML5, and CSS3.
• Experience working with legacy codebases and ability to navigate complex structures.
• Proficiency with Git: branching, merging, resolving conflicts, and contributing via pull requests.
• Attention to detail and ability to deliver pixel-perfect layouts.
• Good understanding of cross-browser compatibility and responsive design.
• Upper-intermediate English or Ukrainian for communication with the team.

Nice to Have

• Experience with SASS/SCSS.
• Basic knowledge of build tools (Webpack, Gulp, etc.).
• Understanding of UI/UX best practices.

We Offer

• Full-time engagement with a stable long-term project.
• Competitive compensation.
• Remote work with flexible working hours.
• Collaborative team and supportive environment.
• Opportunity to work closely with an experienced PM, QA, and senior developers.

About the project

We are Smart-UI, a custom web development agency.

Our client is a major data/AI company in the Apache Spark ecosystem.

We’re looking for a Frontend Engineer who will help us rebuild and modernize the official documentation website.

This is not a typical “marketing website” job - it’s a developer documentation platform with:

• new information architecture for docs,
• modern stack (Next.js, TypeScript, MDX, Tailwind or similar),
• versioned documentation,
• global search,
• quickstarts & code examples.

You will work closely with our team and the client’s team (architects, product, devrel).

Responsibilities

• Implement a new documentation website using Next.js + TypeScript + MDX (or a similar stack agreed with the client).
• Work with documentation structure and navigation: sidebars, versioning, cross-links, IA.
• Build reusable UI components for docs: code blocks, tabs, callouts, API refs, navigation blocks etc.
• Integrate global search (Algolia / Pagefind / other).
• Set up and maintain CI/CD pipeline for the docs site (preview builds, staging, production).
• Collaborate with the client on content migration (existing Spark docs, PySpark docs, quickstarts).
• Take care of performance, accessibility and SEO basics for the docs platform.
• Participate in technical discussions, propose and defend architectural decisions.

Requirements

• 4+ years of commercial experience in frontend / web development.
• Strong experience with React and Next.js (SSR, SSG, routing, data fetching).
• Confident in TypeScript (not just copy-paste).

• Experience building documentation websites or developer portals using:

  • Markdown / MDX
  • and/or Docusaurus / MkDocs / Astro / Gatsby / similar.

   

• Good understanding of:

  • routing & navigation patterns for docs,
  • performance optimization (Lighthouse 80+),
  • accessibility basics (ARIA, keyboard navigation).

   

• Experience working with Git and Git-based workflows (PRs, code review, branching).
• English: Upper-Intermediate+ (you should be comfortable on calls with the client).

Nice to have

• Experience with Algolia, Pagefind or other search solutions.
• Experience with versioned documentation (multiple versions of docs).
• Understanding of data engineering / Apache Spark / Python – not mandatory, but a big plus.
• Open-source contributions or experience maintaining developer-facing docs.
• Experience with CI/CD (GitHub Actions, GitLab CI, etc.).

We offer

• Work on a high-impact, visible project in the Apache Spark / data engineering ecosystem.
• Direct communication with a strong international client (architects, devrel, product).
• Fully remote work, flexible schedule within EU time zones.
• Long-term cooperation if we’re a good match.
• Competitive hourly rate / monthly compensation (to be discussed individually).