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

OverviewWelo Data is looking for sharp, curious, and detail-oriented individuals to join our team as Data Quality Analysts.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 DetailsJob Title: Data Labeling AssociateHiring in: NYC, Seattle, Bellevue, Redmond, San Francisco, Sunnyvale, BurlingameHours: Full-time, 40 hours per weekEmployment Type: W2 Full-Time EmployeeWork Authorization: Must be authorized to work in the U.S. (no visa sponsorship)Pay Rate: $34/hourWhat You’ll DoEvaluate AI model outputs and provide structured, high-quality feedbackPerform audit-based reviews of data and model behavior — identifying patterns, edge cases, and failure modesApply guidelines thoughtfully — and flag when they don’t reflect real-world scenariosContribute to improving evaluation frameworks, not just executing themIdentify trends in model performance and communicate insights clearlyParticipate in team discussions, calibrations, and stakeholder syncsPartner with leads and cross-functional teams to refine quality standardsDocument findings in a clear, concise, and actionable wayWhat We’re Looking ForNative-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 skillsAbility to apply complex writing rules and guidelines consistentlyStrong understanding of safety considerations in GenAI data delivery, with 2+ years of relevant experienceStrong critical thinking and attention to detailAbility to make sound judgment calls in ambiguous situationsNaturally curious about AI, technology, and how systems behaveComfortable speaking up, asking questions, and contributing ideasStrong written and verbal communication skillsAbility to stay consistent while working with evolving guidelinesExperience in data quality, QA, annotation, or analysis is helpful — but not requiredBenefitsPaid Sick Time & Paid Holiday (combined): 15 daysPaid Holidays: Memorial Day and Labor DayMedical, Dental, and Vision Insurance (eligibility applies)Health Savings Account (HSA)401(k) Retirement PlanEmployee Assistance ProgramAdditional 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 cafesMicro-kitchens & Snacks: Offices are stocked with free snacks and beverages, including premium coffee and La CroixUnique Campus Features: Some locations include roof-top nature parksCommuter Benefits: Free transport, shuttles, and sometimes bike-to-work perksPlease note that in order to verify work authorization as is required by Federal law (I-9 process), all new employees must complete a live video verification with their selected IDs and provide photos of these selected IDs within their first 3 days of employment. To know more details (Click here) In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.  In addition, we employ anti-fraud checks to ensure all candidates meet the requirements of the program.  As a trusted global transformation partner, Welocalize accelerates the global business journey by enabling brands and companies to reach, engage, and grow international audiences. Welocalize delivers multilingual content transformation services in translation, localization, and adaptation for over 250 languages with a growing network of over 400,000 in-country linguistic resources. Driving innovation in language services, Welocalize delivers high-quality training data transformation solutions for NLP-enabled machine learning by blending technology and human intelligence to collect, annotate, and evaluate all content types. Our team works across locations in North America, Europe, and Asia serving our global clients in the markets that matter to them. www.welocalize.com To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.