Mindrift

Competitive Programming Expert - Freelance AI Trainer

India full-time Mid INR90 - INR90
full-time Mid level Technology & IT Salary listed Curated
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About the role

Please submit your CV in English and indicate your level of English proficiency.
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.
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.
To apply, share: your competitive-programming handle(s) + current/peak rating, any problem-setting experience, and IOI/ICPC/olympiad history.
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 project, tasks are estimated to require around 10-20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active. Tasks must be submitted by the deadline and meet the listed acceptance criteria to be accepted.
Compensation
Paid per accepted task. Your rate depends on the qualification tier you reach and how efficiently you complete tasks — up to the equivalent of $90/hr. Because payment is per task, a faster pace raises your effective hourly rate.
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Python Writing Competitive Programming Expert Mid level

Likely questions

  1. Tell us about work you have done that is close to the Competitive Programming Expert - Freelance AI Trainer role.
  2. How would you approach your first 30 days at Mindrift?
  3. Which of Python, Writing and Competitive have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Python, Writing and Competitive.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Competitive Programming Expert - Freelance AI Trainer role because I can bring practical experience in Python, Writing and Competitive, learn the team quickly, and contribute to the outcomes Mindrift needs from this hire.

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