Looking for AI training or data labeling work as someone located in Luxembourg? These roles explicitly accept applicants in that country, although eligibility can vary by posting. OpenTrain is the hiring organization, candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support.
Expert M&A attorney needed to redline contracts, perform simulated negotiations, and evaluate AI responses to improve contract-review models. Remote contractor role (OpenTrain AI), 20+ hrs/week, $80–$105/hr; requires J.D., active U.S. bar, and 2+ years M&A experience.
Posted Jun 30, 2026
Help train legal AI by reviewing contracts, interpreting regulations, and writing concise legal summaries for a remote contractor role. Entry-level friendly, 20+ hrs/week, paid $15–$25/hr, English required.
Posted Jun 30, 2026
Join OpenTrain as a JavaScript Frontend Developer to build and optimize user-facing tools that power AI training workflows. Remote contract role, 20+ hours/week, pay $30–$90 USD/hour, focused on modern JavaScript, architecture, code quality, and mentoring.
Posted Jun 30, 2026
OpenTrain AI is hiring a remote Go backend developer to build REST/GraphQL endpoints and run focused evaluations of alpha AI coding tools; part-time (<20 hrs/week), contract role paying $30–$90/hr. Ideal for experienced Go engineers who enjoy debugging and product QA.
Posted Jun 30, 2026
Part-time contractor role reviewing and grading AI-generated contract redlines for fund documents (LPAs, subscription agreements, side letters). Requires active U.S. bar and funds-department experience; pays $80–$105/hr and is under 20 hrs/week.
Posted Jun 30, 2026
Join OpenTrain to analyze real-world financial documents, build models, and rate outputs that train next-generation AI. Part-time contractor role (20+ hrs/week), remote, $15–$25/hr; strong Excel, risk-awareness, and clear communication required.
Posted Jun 30, 2026
Review and validate financial documents to help train AI—perform reconciliations, variance analysis, and ERP review. Remote contract, 20+ hrs/week, paid hourly ($10–$55/hr, top rate $55/hr); requires Bachelor's plus 4+ years relevant finance or accounting experience and fluent English.
Posted Jun 30, 2026
Join OpenTrain AI as a remote English Audio Transcription Specialist transcribing and correcting audio to train next‑generation AI, $20–30/hr. Part‑time contractor role (20+ hours/week) for experienced transcribers who can tag metadata and follow strict quality standards.
Posted Jun 30, 2026
Join OpenTrain AI as a remote Engineering Technical Documentation Reviewer earning $40–$50/hr by reviewing blueprints, CAD outputs, and inspection reports to train AI systems. This part-time contractor role requires 20+ hours/week, English fluency, and real-world technical documentation experience.
Posted Jun 30, 2026
Join OpenTrain AI as a part-time Excel Data Analyst working 20+ hours/week to clean, validate, and analyze document datasets used for text-generation and evaluation tasks. Earn $40–$55/hr (USD) while producing the reports and visualizations that improve AI training workflows.
Posted Jun 30, 2026
Join OpenTrain AI as a contracted Child and Online Safety Expert to design taxonomies, detection frameworks, and clinical response rubrics that help AI systems recognize and respond to youth self-harm, eating disorders, and online exploitation. Remote, part-time work (20+ hrs/week) paying $50–$90/hr
Posted Jun 30, 2026
Contract role for chemical safety and toxicology experts to evaluate model outputs and documents; $50–$90/hr, 20+ hours/week, with estimated project earnings of $8,000–$14,400. Work remotely for OpenTrain AI to shape how AI systems handle hazardous-chemicals content.
Posted Jun 30, 2026
Use expert PowerPoint and business-communication skills to create and evaluate executive-ready presentations that teach AI how to produce polished slide decks. Remote contract, 20+ hours/week, $30–$55/hr for part-time consultants.
Posted Jun 30, 2026
Join OpenTrain to evaluate AI-generated business documents in Portuguese, working remotely 20+ hrs/week as a contractor; assess Excel, PowerPoint and Word deliverables and provide actionable feedback. Pay range: $20–$70 USD/hr (up to $70/hr).
Posted Jun 30, 2026
Evaluate AI-generated business documents in Korean across finance, strategy, marketing, and operations. Remote contractor role, $30–$70/hr, 20+ hours/week — use Excel/PowerPoint/Word to test realistic scenarios and give actionable feedback that improves AI outputs.
Posted Jun 30, 2026
Work remotely reviewing and improving AI-generated business documents in Japanese—provide structured, professional feedback across finance, strategy, marketing, and operations. Part-time contractor role (20+ hrs/week) paying up to $70/hr for experienced business professionals.
Posted Jun 30, 2026
Remote contract role evaluating AI-generated French business documents across finance, strategy, marketing, and operations; 20+ hours/week and pay between $20–$70 USD per hour. Use Excel, PowerPoint, and Word to critique outputs, deliver structured feedback, and help make AI business writing more ac
Posted Jun 30, 2026
Join OpenTrain as a remote Biosecurity & Synthetic Biology Expert to evaluate AI outputs for biosecurity risk, working ~20 hrs/week on a 1–3 month contract at $50–$90/hr (est. $8k–$14.4k). Use your biorisk and synthetic biology expertise to rate model responses and provide clear, evidence-based feed
Posted Jun 30, 2026
Join OpenTrain to score and annotate AI-generated text, working 20+ hours/week as a remote contractor. Help improve model relevance, coherence, and factual accuracy across business, finance, healthcare, legal, and research topics at $20–$40/hr.
Posted Jun 30, 2026
OpenTrain AI seeks an adversarial ML / red-team specialist to design safety tests, stress-test LLMs for prompt-injection and tool-use abuse, and build regression suites. Part-time contractor role (remote, 20+ hrs/week) paying USD $50–$90/hr.
Posted Jun 30, 2026
Join OpenTrain AI as a remote Image Evaluation Specialist reviewing images against detailed rubrics for $20–$30/hr, 20+ hours/week. Evaluate image quality, flag edge cases, and write concise review explanations to help calibrate AI training datasets.
Posted Jun 30, 2026
Join OpenTrain AI to define safety standards, escalation protocols, and abstraction frameworks for nuclear and radiological risk evaluation; remote, 20+ hrs/week, $50–$90/hr. Help shape how advanced models handle sensitive nuclear security information.
Posted Jun 30, 2026
Annotate engineering diagrams as graphs: draw tight bounding boxes for symbols (7 classes plus routing nodes) and label edges (solid/non-solid). Small paid pilot followed by a ~60-sheet batch; tooling experience with Label Studio or CVAT required.
Posted Jun 30, 2026
Join OpenTrain as a remote Angular code reviewer helping AI learn from expert front-end feedback; contractor, asynchronous work at $30–$90/hr for 20+ hours/week. Apply if you have strong Angular, RxJS, and SCSS/SASS experience and clear written communication.
Posted Jun 29, 2026
Join OpenTrain as a remote, contract Rust backend developer to build and harden REST/GraphQL APIs and run focused evaluations of AI-powered coding tools (Cursor). Part-time role (<20 hrs/week) paying $30–$90/hr for clear, well-documented backend feedback.
Posted Jun 29, 2026
Join OpenTrain as a Java Backend Engineer supporting AI system training—build Spring Boot microservices, optimize performance, and deliver high-quality code and documentation. Part-time contractor role, 20+ hrs/week, remote, paid hourly (up to $90/hr).
Posted Jun 29, 2026
Remote German-speaking reviewer needed to evaluate and improve AI-generated business documents across finance, strategy, marketing, and operations. Part-time contractor role (20+ hrs/week) with pay up to $70/hr evaluating document quality and delivering structured feedback.
Posted Jun 29, 2026
Build scalable Python APIs and help test AI coding tools in focused four-day bursts. This remote contractor role offers $50–$100 per hour, 20+ hours weekly, and the chance to shape developer-focused AI systems.
Posted Jun 28, 2026
OpenTrain seeks a Mathematics Expert (PhD) to write and review advanced mathematics prompts, model answers, and evaluations; part-time remote contract (~20 hrs/week) for 1–3 months at $80–$90/hr. Strong math background and clear written explanations required.
Posted Jun 28, 2026
Use expert Excel skills to review and improve complex business spreadsheets, design templates, and produce instructional case studies for AI training. Remote contract, 20+ hours/week, $40–$55 USD/hour (English required).
Posted Jun 28, 2026
AI training is human work that helps prepare and review examples used by artificial-intelligence systems. Depending on the role, tasks can include labeling images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. For applicants located in Luxembourg, the individual posting determines whether the role is eligible, along with its responsibilities and other requirements.
OpenTrain is the hiring organization for the roles published on OpenTrain, including roles that accept applicants located in Luxembourg. Candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support. Review each individual live posting for all role-specific details.
