Practice Real-World Frontend Challenges & Prepare for Developer Jobs

AI can generate code, but great Frontend Engineers understand it.

IOCombats helps you master real-world UI development with design-to-code challenges that sharpen your skills — not just your shortcuts.

Interview Questions to Practice and Ace Your Next Dev Interview

How would you implement a calendar component with event scheduling in React?
Design a full-featured calendar with day/week/month views, event creation, drag-to-resize, recurring events, and conflict detection.
advanced
How would you implement a carousel/slider component in React?
Build a performant, swipe-friendly carousel with auto-play, infinite looping, touch/keyboard navigation, and animated transitions.
intermediate
How would you build a collaborative whiteboard in React?
Design a real-time collaborative whiteboard using canvas, WebSockets/WebRTC, CRDT syncing, undo/redo, and multi-user presence.
advanced
How would you design a modal manager system in React?
Create a global modal manager with stacking, portal rendering, focus trapping, ESC handling, and dynamic modal types.
advanced
How would you design a multi-tab form with data persistence in React?
Build a multi-tab (wizard-like) form that persists data across tabs, auto-saves to localStorage or backend, handles validation per tab, and recovers on reload.
intermediate
How would you implement a multi-select dropdown with search in React?
Design a performant multi-select with search, keyboard navigation, tag rendering, virtualization for large option sets, and async loading.
advanced
How would you build a poll/voting system with real-time results in React?
Design a real-time poll system using WebSockets or SSE, optimistic voting, conflict handling, caching, and animations for live result updates.
advanced
How would you design a real-time chat application in React?
Build a scalable real-time chat UI using WebSockets, presence indicators, message queues, retries, and optimistic rendering.
advanced

Explore Jobs from Top Sources

Data from: LinkedIn, Upwork, Y Combinator, ATS & more

Hirenza

Hirenza

about 7 hours ago

Frontend Developer

FULL TIME

India

Bridgenext

Bridgenext

about 8 hours ago

Emtec - UX Design Specialist

FULL TIME

Pune City, Maharashtra, India

Voxket.ai

Voxket.ai

about 8 hours ago

FrontEnd Developer - Intern

FULL TIME

Chennai, Tamil Nadu, India

VIYONA FINTECH INDIA PRIVATE LIMITED

VIYONA FINTECH INDIA PRIVATE LIMITED

about 8 hours ago

Senior Frontend Developer - React.js/Javascript

FULL TIME

Hyderabad, Telangana, India

Bengaluru, Karnataka, India

Pune City, Maharashtra, India

Latest Blogs & Articles

Stay updated with the latest insights and stories from our blog.

AI Agents in the Browser: What Frontend Engineers Should Actually Prepare For

AI Agents in the Browser: What Frontend Engineers Should Actually Prepare For

By Ghazi Khan | Dec 21, 2025 - 5 min read

Browser‑resident AI agents like Claude-in-Chrome and emerging AI browsers are no longer demos. They change how we think about DOM access, automation, testing, and frontend architecture. Here’s what senior engineers should realistically prepare for.

Generative UI Is Quietly Redefining Frontend Engineering

Generative UI Is Quietly Redefining Frontend Engineering

By Ghazi Khan | Dec 16, 2025 - 5 min read

Generative UI systems can now design, generate, and operate entire frontends from prompts. This isn’t a demo trend—it’s an architectural shift every frontend engineer should understand.

TypeScript 7’s Native Compiler: What It Really Means for Frontend Engineering

TypeScript 7’s Native Compiler: What It Really Means for Frontend Engineering

By Ghazi Khan | Dec 10, 2025 - 6 min read

TypeScript 7 drops its JavaScript heritage and moves to a native toolchain. Build times shrink, configs simplify, and strictness tightens. Here’s how this shift impacts real-world frontend systems.

CSS Subgrid: The Layout Upgrade Frontend Devs Have Waited a Decade For

CSS Subgrid: The Layout Upgrade Frontend Devs Have Waited a Decade For

By Ghazi Khan | Dec 3, 2025 - 5 min read

CSS Subgrid is finally supported across all major browsers, unlocking layout capabilities we’ve been hacking around for years. Here’s a deep, practical breakdown for senior frontend engineers.

Angular 21: Zoneless, Signals-First, and AI-Aware. Why This Release Is a Strategic Shift

Angular 21: Zoneless, Signals-First, and AI-Aware. Why This Release Is a Strategic Shift

By Ghazi Khan | Nov 28, 2025 - 6 min read

Angular 21 brings the biggest architectural shift in years: zoneless change detection, Signals as the core reactivity model, slimmer bundles, Vitest, and AI-aware tooling. Here’s a senior-level breakdown of what changes, why it matters, and how to migrate.

How Full-Stack Became the New Default: Insights From 2025 Hiring Data

How Full-Stack Became the New Default: Insights From 2025 Hiring Data

By Ghazi Khan | Nov 23, 2025 - 5 min read

Full-stack roles have quietly taken over the software job market. This 2025 data-backed breakdown reveals why companies now prefer full-stack engineers, what changed in the industry, and what skills matter today.

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Master Frontend Skills by Rebuilding Real Interfaces

Skip the to-do apps and generic layouts — IOCombats gives you realistic, hand-crafted UI challenges inspired by actual product designs. Learn by doing, not by watching.

  • Framework-agnostic challenges — use React, Vue, Angular and more
  • Responsive layouts with Figma-style design references
  • Component-based tasks that mirror real-world apps
  • Track submissions and showcase your public profile

Find Frontend Jobs Without Wading Through Irrelevant Listings

We aggregate jobs from LinkedIn, Upwork, YC startups, and verified ATS sources — and show you only the ones that matter for frontend engineers.

  • Remote, local, freelance, and full-time jobs
  • Roles filtered by frontend and fullstack technologies
  • Clean job cards with company info, salary, and direct apply links
  • Stay within your tech niche and job preferences
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