Test Overview

Find React developers who build reliable, scalable UIs. This case study checks component architecture, hooks discipline, and performance hygiene—so you hire frontenders who improve both DX and UX.

React Developer

Mid

50

min

Component Architecture & Composition

React Hooks & State Management

Type‑safe Props/TS (optional)

About the Test

Given a small feature with stateful logic, candidates refactor components, stabilize hooks, integrate data, and add tests. We assess reusability, state clarity, performance safeguards, and accessibility basics. You get verifiable evidence of how they reason about UI architecture beyond 'making it work.'

COENSIO LIBRARY

Component Architecture & Composition

React Hooks & State Management

Type‑safe Props/TS (optional)

Performance (memoization, renders)

Error Boundaries & UX Resilience

API Integration (fetch/axios)

Testing (RTL/Jest)

Accessibility & UI Quality

React Developer
roles
Mid
50
minutes
Assessment

Why Coensio?

Ready to revolutionize your hiring process?! Coensio is the ultimate platform for identifying top talent with unparalleled precision and efficiency. Stop guessing and start making data-driven decisions that will transform your team. It's time to hire smarter, not harder. Let's build the future, together!

1

Comprehensive Assessment Library

Comprehensive Assessment Library

Unlock a world of assessments! Access our massive library or let our AI generate custom tests tailored to your exact needs. Whether it's a standard skill test or a unique challenge for a niche role, you have the power to create the perfect assessment every single time. Your ideal candidate is just a test away!

2

Advanced Anti-Cheating Features

Advanced Anti-Cheating Features

Ensure total assessment integrity! Our advanced anti-cheating features are here to guarantee fairness. With screen recording, IP checks, tab switch detection, and camera check, you can be confident that every candidate's score is a true reflection of their skills. Cheating is simply not an option!

3

Real-World Skill Evaluation with Codesight

Real-World Skill Evaluation with Codesight

Assess real-world skills like never before! Evaluate software candidates with live coding environments and practical case studies. Get deep insights with detailed SonarQube reports on code quality and AI-powered analysis of candidate performance. Find developers who can truly deliver!

Comprehensive Assessment Library

Unlock a world of assessments! Access our massive library or let our AI generate custom tests tailored to your exact needs. Whether it's a standard skill test or a unique challenge for a niche role, you have the power to create the perfect assessment every single time. Your ideal candidate is just a test away!

Advanced Anti-Cheating Features

Ensure total assessment integrity! Our advanced anti-cheating features are here to guarantee fairness. With screen recording, IP checks, tab switch detection, and camera check, you can be confident that every candidate's score is a true reflection of their skills. Cheating is simply not an option!

Real-World Skill Evaluation with Codesight

Assess real-world skills like never before! Evaluate software candidates with live coding environments and practical case studies. Get deep insights with detailed SonarQube reports on code quality and AI-powered analysis of candidate performance. Find developers who can truly deliver!

CASE STUDIES

Java Developer

Code Quality & Refactoring (Java)
Implementation & API Design
Mid
120
Prepared by
Coensio
Prepared by experts in their field.

Node.js Developer

API Design & Implementation (REST)
Authentication/Authorization
Mid
120
Prepared by
Coensio
Prepared by experts in their field.

React Developer

Component Architecture & Composition
React Hooks & State Management
Mid
50
Prepared by
Coensio
Prepared by experts in their field.

C# Developer

C# Fundamentals & OOP
Code Quality & Refactoring
Mid
150
Prepared by
Coensio
Prepared by experts in their field.

Python Developer

Clean Code Practices (PEP 8, readability)
Error Handling & Exceptions
Junior
60
Prepared by
Coensio
Prepared by experts in their field.

Kotlin Developer

Code Quality & Clean Coding (Kotlin)
Android Architecture (MVVM / Clean Architecture)
Junior
60
Prepared by
Coensio
Prepared by experts in their field.

Curious  about  Coensio?

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Frequently Asked Questions

1
What is the purpose of Mid React Developer Case Study?
Mid React Developer Case Study is designed to evaluate candidates' skills for React Developer roles. It helps identify top talent by measuring competencies essential for success in your organization. Case Study offers clear insights into each candidate's strengths and areas for improvement, enabling data-driven hiring decisions.
2
Can I customize Mid React Developer Case Study for my specific needs?
Absolutely! Mid React Developer Case Study offers various customization options, including: Adjusting question difficulty levels Modifying assessment duration Selecting specific skill areas to focus on Adding company-specific questions Setting custom scoring weights for different questions
3
How do I send the Mid React Developer Case Study to candidates?
Sending Mid React Developer Case Study is incredibly simple! You can: -Integrate directly an ATS or recruitment platform. -Manually add candidates and invite directly. -Send test via e-mail by sharing an invitation link.
4
How quickly will I receive results from Mid React Developer Case Study?
You’ll receive a report as soon as a candidate completes Mid React Developer Case Study. It includes the candidate's score, details of correct and incorrect answers and other information, giving you insights needed to make quick, informed decisions.
5
Can Mid React Developer Case Study be integrated with my existing hiring tools?
Yes! Mid React Developer Case Study integrates seamlessly with popular ATS and recruitment platforms. This integration lets you manage your workflow in one place and track candidate results effortlessly.
6
Where in my recruitment process should I use this case study?
You can use Coensio case studies at various stages of your recruitment process, depending on your needs: Pre-Screening: Filter candidates early by assessing their skills before interviews. Post-Interview: Validate a candidate's abilities after an initial interview. Final Evaluation: Use as a final step to compare top candidates and make informed decisions. Coensio assessments are flexible and can be tailored to fit any stage of your hiring process!
7
Can I combine this case study with others?
Yes, you can! With Coensio’s Assessment Suite, you can create multiple stages for any assessments you like. To get started, simply contact the Coensio team for more details.