Competitive Programming Expert - Freelance AI Trainer

Mindrift•Lebanon, PA

6h•Remote

About The Position

Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. 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.

Requirements

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+)

Nice To Haves

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

Responsibilities

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