Language Lead - English (Contract)

You will coordinate with the Human Evals Manager on project deliverables and timelines. Some examples of what your day-to-day work may include:

Answer questions from annotators about guidelines, edge cases, or language-specific issues via an agreed project communication channel.

Cascade new feedback, instructions, or rubric updates to annotators working on your projects.

Listen to annotator-rated audio files and check whether their ratings and written feedback align with the rubric.

Prepare written quality assessments for annotators with specific examples and recommendations.

Listen to TTS output and provide ground truth assessments of pronunciation, prosody, and naturalness in your language.

Update or expand sections of the annotation guidelines when you find gaps or edge cases.

Prep and run calibration meetings with annotators.

Hold office hours on a mutually agreed schedule during active studies so annotators can ask questions in real time.

Develop onboarding materials and resources for new annotators.

Write QA reports on annotation quality and calibration outcomes.

Review production audio in your language and flag quality issues to the team.

Investigate language-specific issues reported by customers and identify root causes.

Audit datasets for linguistic accuracy, completeness, and consistency.

Roughly 40 hours per week with flexibility in scheduling. Project hours may vary depending on active studies, data projects, and product needs. Participation in periodic coordination meetings during US Pacific hours is expected.

Experience writing or maintaining annotation guidelines or rubrics.

Experience training, mentoring, or managing other annotators.

Experience with audio evaluation, TTS, or STT.

Conversational spoken English proficiency for meetings and calibration syncs.

Experience working with distributed, remote teams.

This is a 1099 contract opportunity and will not be eligible for the benefits below. Language Leads work on an ongoing basis, renewable by mutual agreement. You will control your own methods for completing assigned work, supply your own equipment, and are responsible for your own taxes. You must be authorized to work in your country of residence.

Note: Cartesia participates in E-Verify and will provide the federal government with Form I-9 information to confirm employment eligibility after hire.

🏢 In-office policy: We’re an in-person team based out of offices in 🇺🇸 San Francisco, 🇬🇧 London and 🇮🇳 Bangalore. We love being in the office, hanging out together, and learning from each other every day.

🌎 Visa sponsorship: We provide visa sponsorship support and assess each circumstance on a case-by-case basis. However, visa sponsorship is dependent on many factors, including the role you are applying for, and the location you are going to be based, and so we can't always guarantee success. Your Recruiter will work with you to understand your visa sponsorship needs from the first call.

🚢 We ship fast. All of our work is novel and cutting edge, and execution speed is paramount. We have a high bar, and we don’t sacrifice quality or design along the way.

🤝 We support each other. We have an open & inclusive culture that’s focused on giving everyone the resources they need to succeed.

Cartesia is an equal opportunity employer. We consider qualified applicants without regard to race, color, religion, sex, national origin, age, disability, veteran status, genetic information, or any other legally protected status.