Annotation Jobs

RWS Group is hiring US-based Italian Data Annotators to annotate and review multilingual data for AI model training in a remote, full-time role working PST hours.

Alignerr is hiring a Senior Python Full-Stack Engineer to build scalable backend services and high-performance data infrastructure for AI model evaluation and annotation workflows.

Experienced C# backend engineer needed to build and optimize high-performance services and full-stack tooling for AI data pipelines and evaluation workflows at Alignerr.

Senior C# Full-Stack Engineer needed to build and optimize backend services and full-stack tooling for AI data and evaluation pipelines on a remote, part-time contract basis.

Senior Python systems engineer needed to build and optimize distributed ML data pipelines and evaluation tooling for Alignerr on a 20–40 hour/week remote contract.

Alignerr is hiring a Senior Rust engineer to build high-performance backend services and developer tooling for AI data pipelines and evaluation workflows on a part-time contract basis.

Lead the development of Python-based backend and full-stack tooling for large-scale AI data pipelines and evaluation workflows at Alignerr, working remotely on a flexible contract.

Alignerr is hiring a Senior C++ Full-Stack Engineer to build and optimize high-performance C++ systems powering AI data pipelines and evaluation workflows.

Experienced Rust engineer needed to develop and optimize distributed systems and full-stack tooling that power AI data pipelines and evaluation workflows at Alignerr.

CloudFactory is seeking US-based, detail-focused Data Entry & Content Review Specialists for a full-time, fixed-term AI model evaluation project running Feb 1–Oct 1, 2026.

Handshake hires seasoned medical transcription professionals to remotely evaluate and annotate AI medical transcriptions, using domain expertise to improve model performance on real-world clinical documentation.

Experienced logistics or warehouse managers are sought to work remotely as contract AI Trainers, evaluating AI outputs and crafting prompts to improve models for transportation and warehousing scenarios.

Handshake is hiring experienced Nuclear Technicians to serve as remote AI Trainers, using field expertise to craft prompts and evaluate AI outputs for nuclear operations.

Alignerr is seeking a Senior C# Full-Stack Engineer to build and optimize internal tooling and backend services for large-scale AI data and evaluation workflows on a 20–40 hour/week contract.

Work as a contract Systems Software Engineer focused on MLOps, developing high-performance C++ systems and full-stack tooling for AI data pipelines and evaluation workflows.

Experienced Python full-stack engineer needed to build and optimize high-performance AI data and evaluation systems for a remote, contract role supporting model training and validation workflows.

An experienced LLM-focused Data Engineer needed to design complex prompts, curate and QA high-quality training data, and collaborate with engineering teams on a short-term freelance engagement for U.S.-based candidates.

Handshake seeks seasoned agricultural managers and farmers to evaluate AI outputs and create domain-specific prompts in a flexible, remote contract role at $75/hr.

Contract opportunity for logistics and distribution professionals to evaluate AI outputs and provide structured, domain-specific feedback on a flexible, remote schedule.

Handshake is hiring logistics and warehouse professionals to do flexible, asynchronous contract work evaluating AI outputs and refining domain-specific prompts.

Handshake seeks experienced bill and account collectors to work remotely as AI trainers, using your real-world collections expertise to evaluate model outputs and improve AI behavior.

Contribute your production planning and expediting expertise to a remote, asynchronous AI training project that asks you to evaluate model outputs and provide structured feedback.

Handshake seeks experienced billing and posting clerks for a remote, asynchronous contract role evaluating AI outputs and providing domain-specific feedback to improve models.

Lead end-to-end delivery of high-impact clinical AI data projects at Office Hours, partnering with foundation model companies, life sciences organizations, and research labs to drive quality, speed, and account growth.

Senior Python Full-Stack Engineer to build and optimize backend services and full-stack tooling for large-scale AI data annotation and evaluation workflows at Alignerr.

Contribute to better AI by annotating Dutch-language text, video and geographic data remotely for RWS as a full-time Data Annotator on a contract through June 2026.

Experienced Data Scientist needed to develop and evaluate automated tokenization and POS annotation solutions for speech and text in support of government-focused NLP projects.

Welo Data is seeking native English annotators in the U.S. to produce high-quality ground truth and evaluate model outputs for personalized music, podcast, and audiobook experiences.

Build scalable annotation platforms and data infrastructure while shaping compliance and tooling at an early-stage AI company working across U.S. and China teams.

HumanSignal seeks an organized, personable Data Collection Study Moderator to lead onsite participant sessions in Columbus and ensure high-quality AI training data collection.

HumanSignal is hiring independent AI Data Collectors to capture, document, and upload high-quality images for AI datasets on a flexible 1099 contractor basis.

Contract Software Engineer to develop and maintain internal annotation, dataset-tracking, and visualization tools supporting Mach9's geospatial ML teams (remote with PST overlap preferred).

Lead Java-focused quality assurance for AI data training projects, providing code reviews, technical evaluations, and contributor support on a remote US-only contract.

Lead discovery and early-stage AI partnerships to develop data and training initiatives that accelerate Colibri’s growth in the AI ecosystem.

Lead a Data Studio team at an MIT-origin AI startup to convert complex mechanical and manufacturing data into production-ready datasets that power EGI product development and customer deployments.