Real-World Coding Challenges

Evaluate developers on what actually matters

The technical hiring platform that tells you who can build — not just who looks good on paper.

Stop hiring developers based on puzzles that have nothing to do with shipping high quality software. Give them a real microservice to build, with real infrastructure, and know exactly who you're hiring.

check_circle No credit card required — free plan available

deployed_code
Candidate
Microservice
EVALUATING...
database
PostgreSQL
Relational DB
memory
Redis Cache
Key-Value
cloud_queue
AWS S3
Object Store
calendar_view_week
Apache Kafka
Event Stream
hub
RabbitMQ
Message Bus
play_circle Tests Running
0 / 25 passing
analytics
Codigrade
Evaluating...

Trusted by teams worldwide

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Real tasks, not brainteasers

Real-World Coding Challenges

Leverage real-world coding challenges to discover the true potential of your candidates.

Beyond Algorithmic Coding Challenges

Candidates Build a Real Microservice

All of our coding challenges require candidates to create a real microservice from scratch. Their microservice will be automatically deployed and evaluated in a live production environment, we take care of the whole evaluation process.

This assessment strategy allows us to test skills that would be impossible to test with traditional algorithmic coding challenges. Thanks to this strategy, we can provide accurate data about your candidates' skills, helping you to avoid costly hiring mistakes.

Explore Coding Challenges arrow_forward
LIVE ENVIRONMENT
assessment-env-48f2a DEPLOYED
SQL REST AMQP
deployed_code
Candidate
Microservice
UP
api API Routes /api/v1/*
account_tree Business Logic DDD
database Data Layer ORM
settings Config env
0.0.0.0:8080
healthy
database
PostgreSQL
v18.3
tables
12
queries
847
api
Order Service
partner-svc
GET /api/orders
POST /api/orders
hub
RabbitMQ
v4.2.5
topic order.created
msgs 2,341
science Test Runner
evaluating
API spec compliance pass
Database integration pass
Message queue events pass
Error handling running
14/18 tests 75%

Why microservices as coding challenges

deployed_code
Real Service, Not Puzzles

Candidates build a real microservice from scratch — the same kind of work they'd do on the job.

rocket_launch
Auto-Deployed & Evaluated

We automatically deploy and evaluate the candidate's code in a live environment. No human intervention needed.

hub
Complete Skill Coverage

A single microservice challenge covers databases, APIs, message queues, architecture, testing, and more — all at once.

target
Accurate & Job-Relevant

See exactly how candidates would perform on the job, helping you avoid costly hiring mistakes.

order-service / routes.py
from flask import Flask, request, jsonify
from repositories import OrderRepository
app = Flask(__name__)
repo = OrderRepository()
@app.route("/api/orders/<order_id>/confirm", methods=["PUT"])
def confirm_order(order_id):
# Load aggregate from repository
order = repo.get_by_id(order_id)
# Domain logic — validate & transition state
order.confirm()
# Persist changes
repo.save(order)
return jsonify(order.to_dict()), 200
[SYSTEM] Database migrations applied successfully.
[14:02:31] * Running on http://0.0.0.0:8080
See what candidates can really do

Better Conditions, Better Signal

Traditional assessments put candidates in artificial environments with countdown timers and unfamiliar editors. The result? You're measuring stress tolerance, not engineering skill — and your best candidates drop out before finishing.

Codigrade removes those barriers. Candidates use their own IDE, work without time pressure, and build something that mirrors actual production work. They perform at their best — and you get an accurate picture of what they'll deliver on day one.

code

Their IDE, Their Best Work

When candidates work in the tools they know, you see their real output quality — not how fast they can learn an unfamiliar browser editor.

schedule

No Time Pressure, No False Negatives

Removing the countdown timer means thoughtful, senior-level candidates aren't penalized. You stop filtering out the people you actually want to hire.

trending_down

Higher Completion, Stronger Pipeline

Candidates enjoy the challenge and actually finish it. Fewer drop-offs mean a larger pool of evaluated talent for you to choose from.

Codigrade vs Traditional Platforms

A Fundamentally Different Approach

Most assessment platforms test how well candidates solve puzzles. We test how well they build software.

Traditional
Codigrade
code
Assessment Type
Algorithmic puzzles & quizzes
Real microservice from scratch
laptop_mac
Coding Environment
Browser-based editor
Candidate's own IDE
checklist
Skills Tested
Algorithms & data structures
APIs, databases, queues, architecture, testing
insights
Evaluation
Pass/fail test cases
Deep skill-by-skill insights
timer
Time Pressure
Strict countdown timer
No time constraint
work
Job Relevance
Low — puzzles rarely reflect daily work
High — mirrors real production tasks
sentiment_satisfied
Candidate Experience
Stressful, artificial
Enjoyable, realistic
Gain deep insights into your candidates' skills

Accurately Identify Great Developers

All of our coding challenges ensure developers have the skills that matter the most to perform on the job.

person_search
Assessment
Candidate Result
82%
Overall Score
verified_user

Code Quality

92%

Clean architecture, error handling, and best practices for scalable code.

api

API Specification

90%

Designing and implementing APIs that other services depend on.

database

Databases

78%

Efficiently storing and retrieving data across different database systems.

hub

Message Queues

65%

Event-driven architecture, message queues, and broker experience.

psychology

Autonomy

88%

Implementing requirements independently — the most valuable developer skill.

integration_instructions

Integration

85%

Communicating safely with databases, queues, and other services.

Stay ahead of your competitors

Hire Top-Tier Developers, Faster

No bias, maximum accuracy, reduced time-to-hire.

target
Fewer Bad Hires

See How They Actually Code

Candidates build a real microservice from scratch. You see how they structure code, write tests, handle errors, follow best practices, and integrate with databases and APIs — all before making an offer.

trending_up
Zero Manual Review

Evaluate at Scale, Automatically

Every submission is deployed, tested, and graded without human intervention. Screen 10 candidates or 1,000 — the effort is the same.

speed
Fewer Interviews

Only Interview the Best

Stop scheduling rounds of technical interviews just to filter candidates. Send an assessment link first, then interview only those who prove they can do the job.

Step by Step

How It Works

Easy to use. No setup required.

1
You

Pick the Right Challenge

Browse our library of coding challenges and select the one that best matches your open role. Each challenge targets different skills — from REST APIs and databases to event-driven architectures.

search
Browse Library
check_circle Hubio — Microservice + DB
radio_button_unchecked Eventio — Event-driven
radio_button_unchecked Cacheflow — Redis
Explore Coding Challenges arrow_forward
2
You

Send an Assessment Link

Configure the allowed programming languages, then share a unique assessment link with your candidate. No scheduling, no coordination — they start when they're ready.

add_circle
New Assessment
Challenge
Hubio — Microservice + DB
Languages
Python Java Go
link https://candidate.codigrade.com/xK9m...
3
Candidate

Candidate Builds a Microservice

The candidate opens the link, reads the requirements, picks their preferred language, and builds a real microservice in their own IDE. No time pressure — they submit when they're satisfied with their work.

code
Candidate View
# candidate-service/app.py
from flask import Flask
app = Flask(__name__)
➜ Building microservice...
█ Upload ready
4
We

We Deploy, Test & Grade

We automatically provision an environment with real infrastructure components, deploy the candidate's service, and run an automated test suite to grade their work — no human review, no inconsistency.

auto_awesome
Evaluating
Provision Infrastructure check_circle Done
Deploy Candidate Service check_circle Done
Run Test Suite progress_activity Running
Generate Report Pending
5
You

Review Detailed Results

You receive an email as soon as the evaluation is complete. Open the portal to see a detailed breakdown by skill, plus download the candidate's source code.

assessment
Assessment Result
Hubio — Microservice + DB
82%
Overall
check_circle API Design
95%
check_circle Code Quality
90%
check_circle Msg Queues
88%
check_circle Autonomy
85%
warning Database
52%
info Needs Improvement
close Concurrent updates not handled — no optimistic locking on entities
close Race condition: two parallel requests can overwrite each other's changes
list_alt View Step-by-Step Details chevron_right download Download Code
Simple, upfront pricing

Pricing

Every paid plan can be cancelled at any time or upgraded to a higher-tier plan.

FREE

$0/month

Explore and Experience the Basics

  • check_circle 2 assessments / month
  • check_circle Free coding challenges available
  • check_circle Automated Evaluation
  • check_circle Download candidate code
Register

STARTUP

$119/month

Accelerate Your Growth

  • check_circle 15 assessments / month
  • check_circle All coding challenges unlocked
  • check_circle Automated Evaluation
  • check_circle Download candidate code
  • check_circle Email notification when assessment is completed
Register
Recommended

SCALEUP

$209/month

Unlock Your Potential

  • check_circle 30 assessments / month
  • check_circle All coding challenges unlocked
  • check_circle Automated Evaluation
  • check_circle Download candidate code
  • check_circle Email notification when assessment is completed
Register

BUSINESS

$389/month

Maximize Your Success

  • check_circle 60 assessments / month
  • check_circle All coding challenges unlocked
  • check_circle Automated Evaluation
  • check_circle Download candidate code
  • check_circle Email notification when assessment is completed
Register
Your Success is our Success

Frequently Asked Questions

Contact us directly if you have any questions.

Yes, you can use our product indefinitely for free with our free plan (no credit card required), but you will be limited to a small number of assessments per month and can't choose premium challenges.
Our team responds within 24 hours

Contact Us

Email us at contact@codigrade.com or message us here.

mail contact@codigrade.com
Our story

Why We Built Codigrade

We saw firsthand how broken developer hiring was. Algorithmic puzzles that don't reflect real work. Manual reviews that don't scale. Good developers rejected, bad hires slipping through.

engineering

Built by Engineers

Our team has spent years building production systems. We designed Codigrade around the skills that actually matter on the job.

handshake

Obsessed with Fairness

Every candidate gets the same environment, the same conditions, and the same objective evaluation. No bias, no subjectivity.

rocket_launch

Small Team, Big Mission

We're a small, dedicated team shipping fast and talking to customers every day. Every feature exists because a real user asked for it.

We believe the hiring industry needs better tools — not more résumé screening, not more whiteboard interviews, but real assessments that show how developers actually work. That's what we're building.

Have questions? Let's talk arrow_forward
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Try Codigrade Now

Start Assessing Your Candidates for Free

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