Software Engineer, TypeScript

Description

• Build difficult codebase-exploration tasks involving production TypeScript and JavaScript repositories • Select tasks from a pre-validated pool of pinned TypeScript repositories with engineering questions, rubrics, foils, and golden solutions • Explore repositories and relevant pull-request or issue history to understand subsystems • Rewrite questions to challenge frontier coding agents while remaining well-defined and answerable • Adjust rubrics and foils to reward correct reasoning and reject plausible-but-wrong answers • Run the full validation loop in Mercor Studio — Check, Golden, Run, Analyze — and iterate until all stages pass • Document work in task READMEs and submit tasks for expert review • Address reviewer feedback on returned tasks • Complete work in Mercor Studio with time tracked by Insightful and access provisioned through Okta • Work is reviewed by a second engineer and a super reviewer before acceptance

Requirements

• 3+ years of professional software engineering experience • Substantial production TypeScript experience • Ability to navigate large, unfamiliar TypeScript monorepos and explain runtime behavior • Fluency in advanced type systems, module resolution, bundlers and transpilers, and Node and browser runtimes • Comfort reading compiler and plugin internals • Experience with developer tooling, compilers, test frameworks, GraphQL servers, or state machines highly relevant • Precise written English • Comfortable with git at commit level, containerized environments, and command-line tooling • Must complete identity verification, background check, signed Terms of Work and CIIAA, tax form, and short calibration quiz before task access • Qualified applicants may be asked to complete a brief technical assessment or provide additional information

Benefits

• Remote work • Fully asynchronous work • Payment of $130 per approved task • Expert team leads across US, India, and Nigeria time zones • Identity verification, background check, signed Terms of Work and CIIAA, tax form, and calibration quiz as onboarding support/process • Up to $250 referral bonus for each successful referral • Reasonable accommodations upon request

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