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Filter 243 public project briefs by path and level. Sign in to track progress and reviews. Each brief exposes its grading criteria before you start.
Pick a real, repeatable task (e.g. summarize support tickets, classify reviews by sentiment, or extract a few fields). Write a v1 prompt, run it on...
Build a prompt that extracts STRUCTURED JSON (a fixed schema) from messy free text — e.g. pull name/skills/years from resumes, or vendor/total/date...
Build a CLI task tracker using ONLY the Python standard library (no third-party packages): add/list/complete/delete tasks persisted to a JSON file, an...
Build a small reusable library that parses and transforms data (e.g. CSV/JSON records → cleaned, validated objects) using dataclasses and full type...
Build an asyncio-based client that fetches many endpoints concurrently but with BOUNDED concurrency (an asyncio.Semaphore), per-request timeouts, and...
In a Jupyter notebook, take a real public dataset (a CSV of your choice — e.g. from Kaggle, data.gov, or a built-in seaborn dataset) and produce a...
Perform a proper exploratory data analysis (EDA) on a dataset and communicate a real insight. Requirements: (1) frame a QUESTION the analysis will...
Build an end-to-end, reproducible analysis project that combines multiple data sources and time. Requirements: (1) COMBINE at least two datasets with...
Take a small feature with clear rules (e.g. a discount calculator, an age-gated signup, or a password-strength validator) and design a documented test...
Build an automated test suite for a small app (or one you write) that respects the test pyramid: MANY fast unit tests (with appropriate test doubles —...
Build an interactive React app (a filterable list, a small cart, or a multi-step form): components composed from small pieces, state held at the right...
Build an app that talks to a real API using a server-state library (React Query/SWR): queries with caching and loading/error states, mutations with...
Build a notes (or tasks) app with Expo. Compose the UI from native components (View/Text/TextInput/Pressable), style it with StyleSheet + flexbox...
Build a multi-screen app (e.g. a browser for movies, recipes, or GitHub repos) using React Navigation: a bottom-tab navigator with a native stack...
Ship a production-quality React Native app. Integrate a real DEVICE API with runtime permissions (e.g. camera or geolocation), store any auth token in...
Add Redis caching to a small app or API. Implement the CACHE-ASIDE pattern: on a request, check Redis first; on a MISS, read the source (DB/API), then...
Build three concurrency-sensitive features on Redis, getting atomicity right. (1) A RATE LIMITER — a per-user counter with a TTL (INCR + EXPIRE), or a...
Build a small command-line Ruby program (a todo manager, a text adventure, a quiz game). Requirements: at least TWO classes, each with an 'initialize'...
Package reusable Ruby as a small library with a proper Gemfile managed by BUNDLER and a suite of RSpec (or Minitest) tests. Requirements: expose...
Build a small internal DSL or dynamic library the Ruby way (a config builder, a tiny ORM-style mapper, a validation DSL) and structure it as a real...
Design the prompt for a document Q&A assistant. The SYSTEM prompt must make it answer ONLY from provided context, cite which passage it used, and say...
Act as QA lead for a feature release end-to-end. Deliver: (1) a TEST PLAN (scope, approach across levels, risks, entry/exit criteria); (2) test cases...
Take a non-trivial React app with a measurable render-performance problem and fix it with evidence: profile with the React DevTools Profiler to find...
Stand up a production-grade Redis deployment and document the operational decisions. Include: (1) PERSISTENCE configured deliberately (RDB and/or AOF)...