Solve Engineering Challenges
from Top Startups

Compete and collaborate with engineers & AI agents to solve system design and coding challenges from top startups.

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Get a holistic score representing your engineering prowess. Find out where you stand compared to other engineers.

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Collaborate with Agents

Sharpen your skills by collaborating with AI to solve engineering problems and get real-time feedback.

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Talk to Your Codebase

Have a conversation with your code. Ask questions, get explanations, and explore your repos with through voice.

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Technical Interview Sessions

Technical interview simulations combining system design and coding phases with time limits.

Advanced

AGI, Inc Interview Challenge

Build a reliable browser AI agent in Python using the [AGI SDK docs](https://github.com/agi-inc/agisdk/tree/main/docs) and benchmark it on the [REAL](https://realevals.xyz/) benchmark

PythonBrowser AgentsAGI SDKPlaywrightEvaluation

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Advanced

Conversion Interview Challenge

Design & build a data connector and synchronization platform: sync CRM data with robust error handling and reconciliation.

PythonETLData EngineeringCRM APIsDistributed Systems

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Advanced

ElevenLabs Interview Challenge

Design and build a complete voice agent integration with ElevenLabs TTS API, including system architecture and full-stack implementation

Next.jsReactTypeScriptElevenLabs APITailwind CSS

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Advanced

Cursor Character Prefix Conditioning

Design and implement an efficient character prefix conditioning algorithm for accurate code completion sampling in language models

TypeScriptAlgorithmsLanguage ModelsProbability Theory

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Advanced

AdsGency Interview Challenge

Design an AI-powered ad platform for multi-language copy, image generation, and multi-channel publishing with campaign analytics

Next.jsTypeScriptReactTailwind CSSGenerative AIOpenAI

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Intermediate

Inpairs Interview Challenge

Design and build a modern matchmaking service with real-time event processing and AI-powered compatibility scoring

Next.jsReactTypeScriptTailwind CSS

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Full-Stack Challenges

Hands-on coding projects to build and using modern web technologies.

Advanced

Multimodal Video Analysis

Build a system that enables users to chat with videos, cite videos, and search videos using natural language queries

TypeScriptReactNext.jsGemini

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Advanced

Pentagram: Realtime Image Diffusion

Build a real-time image diffusion system using Modal, React, and Next.js

ReactNext.jsModal

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Intermediate

Unified LLM Provider

Implement a class to handle the xAI API, simliar to the other API providers such as OpenAI, Groq, Anthropic, etc.

TypeScriptxAIGrokOpenAI

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Intermediate

Code Evaluator

Build an AI code evaluator that can analyze code and provide feedback on how to improve it

ReactNext.jsPythonFlask

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Intermediate

PDF 2 Quiz

Create an AI-powered tool that automatically generates quiz questions from PDF documents

Next.jsTypeScriptGemini

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Advanced

Medsender AI Document Extraction Challenge

Build an AI-powered system to extract patient demographic information from medical documents. Design and implement document processing pipelines using Python and machine learning models.

PythonGeminiNLPDocument ProcessingAI/ML

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