What this opportunity involves

We're building competitive-programming problems and their automatic graders (test cases + checkers) used to train advanced AI coding models. You'll create problems, write both correct and deliberately-wrong solutions, and design the tough test cases that catch subtly-broken code. Your work is what makes the training signal trustworthy.

What you'll do
- Write original algorithmic problems — clear statement, sound constraints, an intended solution;
- Write correct solutions in C++ and Python;
- Write realistic wrong solutions (common mistakes) to test against;
- Build and harden test cases: generators, edge cases, stress and "hacking" tests;
- Write checkers/interactors (testlib) for problems with more than one valid answer;
- Confirm the quality bar: correct solutions pass, wrong ones fail, within time limits.

What we look for
- Strong competitive programming background, shown by a public profile — a Codeforces rating (see levels below), OR an IOI / ICPC / national-olympiad record;
- Fluent contest C++ (STL, complexity); comfortable writing Python;




- Can explain why a solution is wrong and build an input that breaks it;
- Strong written English (C1+).

Levels (by Codeforces rating, or equivalent olympiad achievement):
- Associate — 1700–2100 (Expert / Candidate Master): easier problems;
- Expert — 2200–2600 (Master / Grandmaster): harder problems
- Senior / Reviewer — 2600+ (Int'l Grandmaster) or IOI/ICPC medalist: hardest problems + quality review.

Nice to have
- IOI / ICPC alumni and top competitive programmers especially encouraged to apply;
- Experience setting or testing problems for real contests (Codeforces rounds, ICPC, national olympiads, online judges);
- Testlib experience (checkers, validators, generators);
- Experience creating data for LLM code benchmarks or similar RL / evaluation datasets.

How it works

Apply → Pass qualification(s) → Join a project → Complete tasks → Get paid

Project time expectations

For this pr

📌 Competitive Programming Expert (Argentina)
🏢 AI Chopping Block
📍 Argentina