---
title: 'Project Perseus | Data Labeling Associate - Spanish Speakers (Human-in-the-Loop AI) at Welo Global'
canonical: 'https://feeny.ai/job/project-perseus-data-labeling-associate-spanish-speakers-human-in-the-loop-ai-w2dfrr2dey2g'
type: 'job'
last_seen: '2026-09-07'
---

# Project Perseus | Data Labeling Associate - Spanish Speakers (Human-in-the-Loop AI) at Welo Global

- **Company:** Welo Global
- **Location:** California
- **Compensation:** $34/hr
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-04-22
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.lever.co/weloglobal/726af0ac-f4be-4075-a346-5f44eecad274

## Job description

## Overview

Welo Data is looking for sharp, curious, and detail-oriented individuals to join our team as Data Labeling Associate. This is not a traditional annotation role. You’ll be working directly with cutting-edge AI systems — evaluating outputs, identifying gaps, and helping improve how these systems behave in real-world scenarios. The work sits at the intersection of data quality, model evaluation, and human judgment, where your ability to think critically matters just as much as following guidelines. We’re looking for people who are naturally curious about AI, comfortable forming opinions, and confident in contributing to conversations with teammates, leads, and stakeholders. Project Details Job Title: Data Labeling Associate Hiring in: NYC, Seattle, Bellevue, Redmond, San Francisco, Sunnyvale, Burlingame, Austin, Los Angeles, Washington DC, Chicago, Boston Hours: Full-time, 40 hours per week Employment Type: W2 Full-Time Employee Work Authorization: Must be authorized to work in the U.S. (no visa sponsorship) Pay Rate: $34/hour Contract Duration: 1-year contract with possibility of extension Important: This is a 100% onsite position — remote work is not available for this role. To be considered, candidates must be located in or able to commute to one of the following cities: New York City, Seattle, Bellevue, Redmond, San Francisco, Sunnyvale, Burlingame, Austin, Los Angeles, Washington DC, Chicago, Boston. Please only apply if you meet this location requirement.

## What You’ll Do

- Evaluate AI model outputs and provide structured, high-quality feedback
- Perform audit-based reviews of data and model behavior — identifying patterns, edge cases, and failure modes
- Apply guidelines thoughtfully — and flag when they don’t reflect real-world scenarios
- Contribute to improving evaluation frameworks, not just executing them
- Identify trends in model performance and communicate insights clearly
- Participate in team discussions, calibrations, and stakeholder syncs
- Partner with leads and cross-functional teams to refine quality standards
- Document findings in a clear, concise, and actionable way

## What We’re Looking For

- Native-level language proficiency and a university degree (Bachelor’s or higher).
- B2 or superior level of English.
- 1–2 years of professional writing experience with strong, structured writing skills
- Ability to apply complex writing rules and guidelines consistently
- Strong understanding of safety considerations in GenAI data delivery, with 2+ years of relevant experience
- Strong critical thinking and attention to detail
- Ability to make sound judgment calls in ambiguous situations
- Naturally curious about AI, technology, and how systems behave
- Comfortable speaking up, asking questions, and contributing ideas
- Strong written and verbal communication skills
- Ability to stay consistent while working with evolving guidelines
- Experience in data quality, QA, annotation, or analysis is helpful — but not required

## Benefits

- Paid Vacation: 6 days
- Paid Company Holidays: 2 days (Memorial Day and Labor Day)
- Paid Sick Leave: accrued per applicable state law and company policy
- Medical, Dental, and Vision Insurance (eligibility applies)
- Health Savings Account (HSA)
- 401(k) Retirement Plan
- Employee Assistance Program
- Additional voluntary benefits (life, accident, critical illness, etc.)
- Free Gourmet Food: Free breakfast, lunch, and dinner are provided, featuring a wide variety of cuisines in multiple cafes.
- Micro-kitchens & Snacks: Offices are stocked with free snacks and beverages, including premium coffee and La Croix.
- Unique Campus Features: Some locations include roof-top nature parks
- Commuter Benefits: Free transport, shuttles, and sometimes bike-to-work perks.

## About Welo Global

## Company Overview
- **One-liner**: Welo Global delivers enterprise localization, AI training data, multilingual content, and intellectual property solutions through a portfolio of specialized global brands.
- **Entity Type**: Private (Privately Held)
- **Headquarters**: Not publicly available (global operations across multiple countries)
- **Founded**: Not publicly available (earliest known employee joined in 2002)
- **Founders**: Not publicly available

## Core Business
- **Primary industries**: Language Services, Localization, AI Training Data, Intellectual Property, Digital Marketing, Life Sciences
- **Target customers**: B2B – enterprise localization teams, AI/ML labs, law firms and corporate legal departments, pharmaceutical and medical device companies, global marketing teams
- **Mission or purpose**: To help organizations operate and scale globally by combining human expertise with advanced AI and technology, while fostering sustainability and inclusion.

## Products & Services
For each major offering:
- **Welocalize**: AI-enabled multilingual content and localization solutions for enterprises, powered by the Opal Platform (an agentic system orchestrating AI, automation, and human expertise). Serves localization teams in 300+ languages.
- **Welo Data**: Multilingual data generation, evaluation, and human data infrastructure for AI systems. Provides a network of 500,000+ vetted experts and a proprietary quality framework (NIMO™). Supports foundation labs and enterprises deploying GenAI.
- **Park IP**: Global IP solutions for law firms and corporate legal departments, including patent translation, foreign filing, and litigation support. Uses the Legal Studio platform for portfolio management.
- **Welo Life Sciences**: Specialized language solutions for highly regulated industries (clinical trials, pharmaceuticals, medical devices). Includes translation, linguistic validation, and regulatory content services.
- **Adapt**: Multilingual digital performance marketing agency. Offers paid search, SEO, programmatic, paid social, and content marketing. Uses Adapt Studio, a translation platform built for marketers.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Serves over 2,000 clients in 300+ languages; employs a network of 500,000+ linguists and domain experts
- **Notable Investors/Partners**: Not publicly available (private company)
- **Growth Signals**: 
  - Holds 7 ISO certifications (including ISO 14001 for environmental management)
  - Voluntarily discloses carbon emissions (Scope 1, 2, 3)
  - Actively expanding AI training data and GenAI evaluation services
  - LinkedIn reports 35 employees (likely corporate HQ), while the careers page lists over 1,500 corporate jobs globally – indicating a much larger workforce

## Competitive Advantages
- **Portfolio of specialized brands** – each brand targets a distinct, regulated vertical with deep expertise and fit-for-purpose technology.
- **Massive global network** – 500,000+ vetted linguists and domain experts across 300+ languages.
- **AI-first technology** – Proprietary platforms (Opal, NIMO, Adapt Studio, Legal Studio) that integrate generative AI, automation, and human judgment.
- **Compliance and security** – 7 ISO certifications (including ISO 14001) and a strong focus on data security, ethical AI, and sustainability.
- **Longevity and scale** – Established over 20 years with a track record of serving Fortune 500 and Am Law 100 clients.

## Strategic Focus
- **AI training data and evaluation** – Growing its Welo Data brand to support foundation labs and enterprises deploying GenAI, with a focus on safety, bias mitigation, and cross-lingual reliability.
- **Product-led innovation** – Enhancing the Opal Platform and other agentic systems to automate multilingual content workflows.
- **Sustainability** – Maintaining ISO 14001 certification, voluntarily reporting carbon emissions, and expanding the Give Grant program for employee-selected charities.
- **Global scalability** – Continuing to build a diverse, remote-friendly workforce across 8+ countries.

## Why Work Here
- **Remote-first culture** – Many positions are work-from-home; the company emphasizes global teamwork and flexibility.
- **Diversity and inclusion** – “Come as you are” motto; active Give Grant program for employee-funded donations; commitment to hiring a diverse workforce.
- **Sustainability focus** – ISO 14001 certified, with voluntary carbon disclosure and environmental initiatives.
- **Career growth** – Opportunities across 1,500+ corporate roles worldwide in localization, AI, technology, marketing, and legal services.
- **Learning environment** – Continuous learning encouraged; access to cutting-edge AI and multilingual technologies.

## Sources
1. [weloglobal.com](https://www.weloglobal.com/company/)
2. [weloglobal.com](https://www.weloglobal.com/company/careers/)
3. [weloglobal.com](https://www.weloglobal.com/portfolio/)
4. [linkedin.com](https://www.linkedin.com/company/welo-global)
5. [jobs.lever.co](https://jobs.lever.co/weloglobal)

## Other roles at Welo Global

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- [French Canadian Linguist](https://feeny.ai/job/french-canadian-linguist-welo-global-spain-c38d30s1tfxe) — Spain
- [Bulgarian Localization QA Tester / Proofreader](https://feeny.ai/job/bulgarian-localization-qa-tester-proofreader-welo-global-spain-9bs828f7tm9s) — Spain
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