Senior Software Engineer (Backend)

Quick Facts

• Role: Senior Software Engineer (Backend)

• Work mode: Fully remote

• Type: Contractor (~15 hours/week)

• Schedule: Flexible (choose hours/days, including weekends)

• Compensation: Output-based ($30–$100/hr); paid per task that meets project specifications

Description

In this role, you help train next-generation AI systems by creating realistic, challenging coding tasks and implementing deterministic verifiers that accept valid solutions and reject invalid ones. You’ll shape how models learn, reason, and perform using high-quality, real-world input. No prior AI experience is required—your backend/domain expertise is what matters.

Responsibilities

• Create coding tasks for AI to solve, including feature implementation and bug fixes

• Implement deterministic verifiers that validate reasonable correct solutions

• Debug, improve performance, and ensure quality through automated testing

• Use strong engineering judgment and code review practices to maintain quality

Requirements

• Strong backend experience in Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar

• Track record building scalable services and APIs

• Comfort with debugging, performance work, and automated testing

• Solid code review instincts

• Strong testing background (designing test strategy, maintaining large test suites, diagnosing flaky tests) is a plus

Benefits

• Fully remote, worldwide hiring across multiple countries

• Flexible working hours and days

• Output-based compensation; experts are paid per task and must meet minimum weekly submission requirements