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Content updates: May–July, 2025

HackerEarth is excited to share major content updates made during the May–July 2025 quarter.

As part of our ongoing effort to provide high-quality technical content, we created over 13,000 multiple-choice questions across 455 different skills. Our library content has been carefully organized across key technical areas to match current industry needs.

Topics

No. of questions

Description

Full-stack development 

250+

HackerEarth library has over 250 questions covering topics like  HTML, CSS, JavaScript, Angular, Core Java, and advanced Java.

SQL

100+

Proficiency in SQL querying and debugging remains a vital skill in today's data-driven landscape. Our library has questions designed to test candidates on real-world scenarios that require advanced querying techniques.

Programming

200+

HackerEarth library has a wide range of programming questions covering topics like:

DSA techniques
  • Binary Search, Trees/Heap, Dynamic Programming, Greedy Algorithms, Priority Queues, Graphs, Bit Manipulation, Backtracking, Two Pointers, Brute Force
Programming paradigms
  • DSA Theme-Based Problems, Object-Oriented Programming (OOP), Language-Specific Features
System concepts
  • Memory Management, Concurrency/Multithreading, Error Handling
Complexity and Optimization
  • Time Complexity Analysis, Performance Tuning

Math and Logic

  • Mathematical Algorithms, Input/Output Formatting

Data Science and Machine Learning

—

We have added new content on topics like Feature Engineering, Clustering, Model Evaluation, Recommendation Systems, Reinforcement Learning, and more.

Subjective questions

—

Organizations can use this question type to ask candidates about a range of topics, including business management, product management, customer success, software technologies, and much more. It can also be used to assess the soft skills of the candidate.

Innovation in question types

HackerEarth has introduced several innovative formats within the full-stack development domain.

Question type

Format

Description

Full-stack development

Code Security

Addressing the critical need for security-aware development practices in today's threat landscape.

PySpark with Jupyter Notebook

Interactive, real-world data processing scenarios that mirror actual workplace environments.

Android Development

Comprehensive coverage of mobile development using both Kotlin and Java, reflecting current Android development practices.

AI-resilient real-world codebase debugging projects

A revolutionary assessment format featuring large-scale, real-world codebases (3000+ lines of code) where candidates must navigate complex multi-file architectures, identify bugs, and implement fixes. These sophisticated assessments have been rigorously tested against leading AI models and demonstrate authentic problem-solving evaluation capabilities.

SQL query

Debugging

We have introduced a new category focusing on practical troubleshooting skills that developers encounter daily in production environments.

Research and development

HackerEarth's R&D team is actively conducting feasibility studies and developing assessment content focused on emerging and high-impact technologies.

Ongoing initiatives

Type

Details

Alpine.js skills assessment

Evaluating lightweight JavaScript framework proficiency for modern frontend development.

GraphAI evaluation

Assessment design for next-generation AI applications leveraging graph technologies.

Three.js proficiency assessment

Measuring skills in 3D graphics and interactive web experiences using Three.js.

Theme-based DSA

Structured evaluation of algorithmic thinking through progressively layered DSA challenges.

Functional programming assessment

Multi-language evaluation (Java, Python, JavaScript) of functional programming in full-stack development contexts.

Go (Golang) backend assessment

Measuring backend engineering capabilities using Go for modern system-level development.

At HackerEarth, our focus is to make technical assessments accurate, relevant, and impactful. Our mission is not only to help organizations hire the best talent but also to give candidates a fair and engaging way to demonstrate their skills.