You got the HireVue link, but this time it's not just behavioral questions — there's a coding assessment attached. HireVue's coding tests are used by Amazon, Microsoft, Capital One, JP Morgan, and dozens of other companies to screen software engineering candidates before the live rounds.
The format is different from LeetCode or HackerRank, so preparation that worked for other platforms might not be enough. This guide covers what HireVue coding assessments actually look like, what they evaluate, and how to prepare efficiently.
For the behavioral/video portion of your HireVue interview, see our Complete HireVue Interview Preparation Guide.
What Is a HireVue Coding Assessment?
HireVue's coding assessment is a browser-based coding environment where you solve programming problems within a time limit. Unlike the video interview (which is asynchronous), the coding assessment is typically timed and auto-graded.
Key facts:
| Feature | Details |
|---|---|
| Environment | Browser-based IDE (no local setup needed) |
| Languages | Java, Python, Ruby, C#, Haskell, Perl, PHP, JavaScript |
| Duration | 30-90 minutes (varies by company) |
| Questions | 1-4 problems per assessment |
| Difficulty | LeetCode Easy to Medium (rarely Hard) |
| Grading | Automated — test cases determine pass/fail |
| Retakes | Typically none — you get one attempt |
| Combined | Often paired with a video interview (behavioral portion) |
HireVue Coding vs Other Platforms
If you've used HackerRank, CodeSignal, or Karat, here's how HireVue compares:
| Feature | HireVue | HackerRank | Karat | CodeSignal |
|---|---|---|---|---|
| Format | Browser IDE, auto-graded | Browser IDE, auto-graded | Live with interviewer | Browser IDE, auto-graded |
| Time | 30-90 min | 60-120 min | 60 min live | 70-120 min |
| Difficulty | Easy-Medium | Easy-Hard | Easy-Medium | Easy-Hard |
| Human reviewer | No (auto-graded) | No | Yes (live interviewer) | No |
| Video component | Often combined with behavioral | Rarely | Always includes domain knowledge | Sometimes |
| Languages | 7+ | 30+ | Most major languages | 40+ |
| Partial credit | Some (per test case) | Yes | Yes (human evaluation) | Yes |
Key difference: HireVue coding is almost always combined with a behavioral video interview, so you need to prepare for both. Most other platforms test coding in isolation.
For Karat-specific preparation: Karat Interview Preparation Guide →
What HireVue Coding Assessments Evaluate
HireVue's auto-grading primarily measures:
1. Correctness (70-80% of score)
- How many test cases your solution passes
- Edge case handling (empty arrays, null inputs, single-element inputs)
- Both visible test cases (you can see results) and hidden test cases (you can't)
2. Code Quality (10-15% of score)
- Clean, readable code structure
- Meaningful variable names
- Appropriate use of built-in language features
- No dead code or unnecessary complexity
3. Efficiency (10-15% of score)
- Time complexity — will your solution pass with large inputs?
- Some problems have hidden test cases with large datasets that TLE (Time Limit Exceeded) on brute force approaches
- You don't need optimal solutions for every problem, but you need better than O(n²) for medium difficulty
What It Does NOT Evaluate
- Comments or documentation (don't waste time adding them)
- Specific coding style (tabs vs spaces, bracket placement)
- Design patterns (no need for factory patterns on a 30-minute assessment)
Common Question Types and Patterns
Based on candidate reports, HireVue coding assessments focus on these pattern families:
Tier 1: Must-Know (Appear in 70%+ of assessments)
| Pattern | Example Problems | Why It's Common |
|---|---|---|
| Hash Maps / Frequency Counting | Two Sum, group anagrams, find duplicates | Fast lookup, universal applicability |
| Array / String Manipulation | Reverse words, merge intervals, sliding window max | Core data manipulation |
| Two Pointers | Valid palindrome, container with most water, sorted array operations | Efficient array traversal |
Tier 2: Frequently Tested (40-60%)
| Pattern | Example Problems | Why It's Common |
|---|---|---|
| Sorting + Binary Search | Search in rotated array, find peak element | Efficiency testing |
| Stack / Queue | Valid parentheses, min stack, implement queue | Data structure fundamentals |
| Sliding Window | Maximum sum subarray, longest substring without repeating | Subarray/substring problems |
Tier 3: Occasionally Tested (20-30%)
| Pattern | Example Problems | Why It's Common |
|---|---|---|
| BFS / DFS | Number of islands, tree traversal, shortest path | Graph/matrix problems |
| Dynamic Programming (basic) | Climbing stairs, house robber, coin change | Optimization problems |
| Linked List | Reverse list, detect cycle, merge sorted lists | Pointer manipulation |
Master all these patterns on Thita.ai →
Company-Specific Coding Variations
Amazon
- Difficulty: LeetCode Medium (occasionally Hard)
- Focus: Arrays, hash maps, trees, BFS/DFS
- Unique: Problems often framed in Amazon domain contexts (warehouse optimization, delivery routing)
- Combined with: Behavioral video interview testing Leadership Principles
- Time: 60-90 minutes for 2-3 problems
Microsoft
- Difficulty: LeetCode Easy-Medium
- Focus: Arrays, strings, linked lists, trees
- Unique: Broader pattern coverage — they test breadth over depth
- Combined with: Behavioral video emphasizing growth mindset
- Time: 60 minutes for 2 problems
Capital One
- Difficulty: LeetCode Easy-Medium
- Focus: Data processing, hash maps, sorting, aggregation
- Unique: Problems often involve data manipulation (CSV parsing, transaction analysis)
- Combined with: Behavioral video emphasizing analytical thinking
- Time: 45-60 minutes for 1-2 problems
JP Morgan Chase
- Note: JP Morgan primarily uses HackerRank (not HireVue) for coding assessments
- The HireVue portion is purely behavioral
- See: JP Morgan HackerRank Preparation Guide →
IBM
- Difficulty: LeetCode Easy-Medium
- Focus: String manipulation, arrays, basic algorithms
- Combined with: Behavioral video emphasizing innovation and collaboration
- Time: 45-60 minutes for 2 problems
For full company details: Companies That Use HireVue →
Preparation Strategy: Pattern-Based Approach
Grinding random LeetCode problems is the slowest way to prepare. Pattern-based learning lets you recognize problem types instantly and apply known solution templates.
Why Patterns Beat Grinding
| Approach | Problems Needed | Time to Prepare | Interview Performance |
|---|---|---|---|
| Random LeetCode grinding | 200-300 problems | 3-6 months | Inconsistent |
| Pattern-based learning | 50-80 problems | 2-4 weeks | Consistent |
| Memorizing solutions | 100+ problems | 1-2 months | Fails on variations |
When you learn a pattern, you can solve any problem that uses it — even if you've never seen that specific problem before.
The 10 Patterns That Cover 90% of HireVue Coding
| # | Pattern | Key Technique | Example |
|---|---|---|---|
| 1 | Hash Map | O(1) lookup for counting, grouping | Two Sum, group anagrams |
| 2 | Two Pointers | Converging or sliding on sorted data | Valid palindrome, 3Sum |
| 3 | Sliding Window | Fixed/variable window on array/string | Max sum subarray, longest substring |
| 4 | Binary Search | Divide and conquer on sorted data | Search rotated array |
| 5 | BFS | Level-order traversal, shortest path | Number of islands, tree levels |
| 6 | DFS | Depth exploration, backtracking | Path sum, permutations |
| 7 | Stack | LIFO for matching, nesting | Valid parentheses, next greater |
| 8 | Sorting | Pre-process for efficiency | Merge intervals, meeting rooms |
| 9 | Dynamic Programming | Overlapping subproblems | Climbing stairs, coin change |
| 10 | Linked List | Pointer manipulation | Reverse, detect cycle, merge |
Learn all 90 DSA patterns on Thita.ai →
Recommended Study Plan: 2 Weeks
Week 1: Core Patterns (Days 1-7)
| Day | Pattern | Practice Problems | Time |
|---|---|---|---|
| 1 | Hash Maps | Two Sum, valid anagram, group anagrams | 1.5 hrs |
| 2 | Two Pointers | Valid palindrome, container with most water, 3Sum | 1.5 hrs |
| 3 | Sliding Window | Max sum subarray, longest substring without repeating | 1.5 hrs |
| 4 | Binary Search | Search rotated array, find peak element | 1.5 hrs |
| 5 | BFS/DFS | Number of islands, tree level order, path sum | 2 hrs |
| 6 | Stack + Sorting | Valid parentheses, merge intervals | 1.5 hrs |
| 7 | Review | Redo any problems you struggled with | 1 hr |
Week 2: Timed Practice (Days 8-14)
| Day | Activity | Time |
|---|---|---|
| 8 | Mixed practice: 2 random problems, 45-min timer | 1 hr |
| 9 | Dynamic Programming basics: climbing stairs, house robber, coin change | 1.5 hrs |
| 10 | Linked List: reverse, detect cycle, merge sorted | 1.5 hrs |
| 11 | Full simulation: 3 problems, 90-min timer (mirror HireVue format) | 1.5 hrs |
| 12 | Weak area review — revisit patterns you scored lowest on | 1 hr |
| 13 | AI Mock Interview — full simulation of the behavioral portion | 1 hr |
| 14 | Final review: one problem per pattern, focus on speed | 1 hr |
Total: ~20 hours over 2 weeks
Start the pattern-based study plan →
If Your Assessment Is in 3 Days
Focus on the three highest-frequency patterns only:
Day 1 (2 hours):
- Hash Map: Two Sum, valid anagram, first unique character
- Two Pointers: Valid palindrome, two sum on sorted array
Day 2 (2 hours):
- Sliding Window: Max sum subarray, longest substring without repeating
- Stack: Valid parentheses
- Sorting: Merge intervals
Day 3 (1 hour):
- Timed practice: 2 problems in 45 minutes
- Review any weak spots
- Also prepare for the behavioral portion: HireVue Questions Guide →
Technical Setup for the Coding Assessment
Before the Assessment
- Test your browser: HireVue works best on Chrome/Firefox. Clear your cache if you've had issues before.
- Check your internet: A disconnection during a timed assessment can lose your progress. Use a wired connection if possible.
- Know your language: Select the language you're most comfortable with before starting. Python is the fastest for most candidates (less boilerplate).
- Close other tabs: Free up memory and prevent notifications.
During the Assessment
- Read the entire problem first. Don't start coding after reading the first line.
- Check the constraints. Input size tells you what time complexity is expected:
- n ≤ 100: O(n²) is fine
- n ≤ 10,000: O(n log n) needed
- n ≤ 1,000,000: O(n) or O(n log n) required
- Handle edge cases first. Empty input, single element, all same elements.
- Test with the visible examples before submitting. If they pass, submit.
- Don't over-optimize. If all visible tests pass and you have time, move to the next problem rather than refactoring.
Language Tips
| Language | HireVue Advantage | Watch Out For |
|---|---|---|
| Python | Least boilerplate, fastest to write | No type hints needed; use built-in functions like Counter, defaultdict |
| Java | Strong if you know it; verbose but clear | Don't forget imports; use HashMap, ArrayList, Arrays.sort() |
| JavaScript | Good for web-focused roles | Map over object literals for hash maps; handle === vs == |
| C# | Excellent for Microsoft roles | Dictionary<K,V>, LINQ for elegant solutions |
When HireVue Combines Coding + Video
Many companies send a single HireVue link that includes both a coding assessment and a behavioral video interview. Here's how to approach it:
Typical Combined Format
- Behavioral video (20-30 min) — 5-6 questions, 30s prep, 3 min answer
- Coding assessment (30-60 min) — 1-3 problems, auto-graded
- Sometimes in either order — the platform tells you upfront
Strategy for Combined Assessments
- Do the behavioral first if you have a choice. It warms you up and you'll be more articulate before fatigue sets in.
- Don't let one section's performance affect the other. If you bomb a coding problem, take a breath and deliver your behavioral answers with full energy. They're scored independently.
- Time management is crucial. Don't spend 40 minutes on one coding problem at the expense of easier ones.
For behavioral prep: Complete HireVue Interview Guide →
Preparing Your Team for HireVue Coding at Scale
If you're an engineering manager or L&D lead preparing a group of engineers for HireVue coding assessments — whether for hiring pipeline readiness or client placements — Thita.ai for Teams provides:
- Structured DSA pattern training covering all HireVue question types
- AI mock interviews for the behavioral portion
- Progress tracking across your entire team
- Learning paths from fundamentals to advanced patterns
Preparing 10+ engineers? Contact us → for a custom team preparation plan.
Key Takeaways
- HireVue coding assessments are browser-based, auto-graded, and typically LeetCode Easy-Medium
- Hash maps, two pointers, and sliding window cover 70%+ of questions
- Pattern-based learning (50-80 problems) is 3x more efficient than random LeetCode grinding (200-300 problems)
- Python is the fastest language for most candidates (least boilerplate)
- Read constraints to determine expected time complexity
- Most HireVue coding assessments are combined with behavioral video — prepare for both
- 2 weeks is enough for focused preparation using the study plan above
Start Preparing Now
Step 1: Master DSA patterns with the 90-pattern sheet
Step 2: Read the Complete HireVue Interview Guide for the behavioral portion
Step 3: Practice with AI Mock Interview to simulate the full HireVue experience
Related Articles
- HireVue Interview Preparation: The Complete Guide 2026
- Top HireVue Interview Questions with STAR Answers
- Companies That Use HireVue: Complete Prep Guide
- JP Morgan HackerRank Coding Test Preparation
- Karat Interview Preparation: Complete Guide
- 90 DSA Patterns: The Complete Guide
- Best AI Interview Prep Tools in 2026