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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.
Build a small Rails app (a blog, a task board, a bookmarks list). Requirements: generate at least TWO models with a relationship (belongs_to /...
Extend Rails into something interactive — EITHER a Hotwire-driven UI OR a JSON API (pick one). Shared requirements: model a domain with associations;...
Build a fuller Rails app and take it toward production (a multi-user SaaS-style app, a marketplace). Requirements: (1) authentication (a starter kit...
Build a useful CLI with cargo (e.g. a word/line counter, a units converter, or a small todo manager). Read arguments/stdin, model your data with...
Build a reusable LIBRARY crate (cargo new --lib): a generic data structure or algorithm parameterized over a type with trait BOUNDS (e.g. T: Ord), at...
Build a concurrency-heavy Rust app — EITHER multi-threaded (e.g. a parallel file/data processor sharing state via Arc<Mutex<T>> and coordinating with...
Design a small relational schema (e.g. a library, a store, or a blog) in third normal form: tables with appropriate data types, PRIMARY KEYs, and...
Given a dataset (orders/events/transactions), write a suite of analytical queries that use Common Table Expressions for readability and WINDOW...
Start from a schema with several slow queries. Use EXPLAIN / EXPLAIN ANALYZE to read the plans, identify the bottlenecks (sequential scans, bad join...
Build a small command-line Scala program (a word-frequency counter, an expression calculator, a CSV summarizer). Requirements: prefer val (immutable)...
Package reusable Scala as a small library with sbt and a test suite. Requirements: expose an API using generics and/or a TYPE CLASS via Scala 3...
Build a Scala application that does real concurrent or effectful work (a web scraper/aggregator, a small API client, a job runner). Requirements: (1)...
Build a minimal AUTHORITATIVE server for a simple real-time multiplayer toy (e.g. shared moving dots/'agar'-style, Pong, or a top-down arena) — use...
Extend your authoritative server with real netcode so it feels smooth under latency and resists basic cheating. Requirements: (1) CLIENT-SIDE...
Build a more complete multiplayer backend around your game (design/implement as far as your stack allows; document any parts you design rather than...
Write a small Bash utility script (a backup helper, a batch file-renamer, a log summarizer). It must start with a proper shebang and 'set -euo...
Solve a real data task with a shell PIPELINE using the classic tools (a log-analysis report, extracting fields from a CSV, summarizing file stats)....
Build a production-quality Bash CLI tool (a deployment helper, a project scaffolder, an ops automation script). Requirements: (1) a clean header with...
Pick a real architectural decision for a system you know or invent (e.g. 'monolith vs microservices for our MVP', 'PostgreSQL vs DynamoDB for the...
Choose a non-trivial system (real or designed) and document its architecture using the C4 model. Produce at least the System Context diagram (the...
Build a REST API with Spring Boot 3 (Java 17+, jakarta.*) scaffolded from Spring Initializr. Expose @RestController endpoints (GET/POST/PUT/DELETE)...
Extend a Spring Boot 3 API with Spring Security 6: a SecurityFilterChain @Bean (NOT WebSecurityConfigurerAdapter) defining public vs authenticated...
Build a Spring Boot 3 microservice ready for production. Expose Actuator with health (liveness/readiness groups) + metrics via Micrometer (Prometheus...
Produce a full architecture proposal for a realistic system (e.g. a multi-tenant SaaS, a ride-booking backend, an analytics platform). Deliver: (1)...