Software Engineer, TypeScript

Job not on LinkedIn

🕒 September 12

🇺🇸 United States – Remote

💵 $130 / hour

⏳ Contract/Temporary

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 17%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Mercor

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2023

💰 $350M Series C - Mercor on 2025-10

Mercor is a company for which no descriptive text was provided in the input. Additional information (products, services, target customers, or industry specifics) is needed to create an accurate summary and select appropriate industries.

📋 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