Competitive Programming Expert - Freelance AI Trainer

Mindrift; Saudi Arabia; On-site; SAR 11,000 - 22,000; Part time

Job summary

Mindrift is building competitive-programming problems and their automatic graders used to train advanced AI coding models. You’ll create problems, write both correct and deliberately-wrong solutions, and design tough test cases that catch subtly-broken code.

You’ll build checkers, interactors, and test data generators, ensuring quality, time limits, and edge-case coverage for each task. This is a part-time, project-based opportunity requiring strong English and CP background.

Qualifications

• Strong competitive programming background evidenced by public profile or olympiad achievements.
• Fluent English communication and ability to explain reasoning clearly.
• Experience explaining why a solution is wrong and constructing input to break it.

Responsibilities

• Write original algorithmic problems with clear statements and constraints.
• Provide correct solutions in C and Python and realistic wrong solutions.
• Create hard test cases, generators, edge cases and stress tests.
• Develop checkers and validators for problems with multiple valid answers.

Skills

Competitive programming

Codeforces rating

Python

C++

English communication

Job description

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

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

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 Because payment is per task a faster pace raises your effective hourly rate.