AI Tutor - Portuguese at xAI

Job description

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: In this role, you will help train and refine Grok's voice and language capabilities in Portuguese. Your expertise will directly shape how Grok speaks and understands Portuguese, from pronunciation and natural phrasing to cultural nuance. You will see your work show up in a product used by people around the world. RESPONSIBILITIES: Annotate, label, and provide feedback on multilingual audio clips, voice recordings, and speech samples using proprietary tools. Translate and localize text (UI copy, prompts, responses, and other content) from English into Portuguese, with attention to accuracy, natural phrasing, and cultural fit. Help produce clear, natural audio data that accurately captures linguistic and prosodic details such as intonation, rhythm, and accent. Collaborate with technical staff to refine annotation guidelines and tools for handling accents, background noise, speech variation, and multilingual audio. BASIC QUALIFICATIONS: Proficiency in Portuguese at CEFR C1 level or higher. English proficiency at CEFR B2 level or higher. PREFERRED SKILLS AND EXPERIENCE: Native proficiency in Portuguese. English proficiency at CEFR C1 level or higher. Experience in one or more of the following areas: Advanced transcription or audio annotation, with strong attention to accents, prosody, disfluencies, and variable recording quality. Translation or localization work (especially UI, product copy, or conversational text) between English and Portuguese. Voice recording, voice acting, podcasting, or related audio production that demonstrates clear delivery and attention to sound quality. Background in linguistics, phonetics, speech sciences, or hands-on work with speech/audio datasets and AI training data. LOCATION AND OTHER EXPECTATIONS: This is a remote role which may be performed from the following countries: United States United Kingdom Canada Australia This role may be offered as a full-time or part-time position, depending on role / business needs and candidate availability. Full-time positions are preferred and require working standard business hours in your local time zone. Positions are typically offered as fixed-term employment contracts of 6 months. Extensions or conversion to a permanent role may be available based on business needs. For US-based candidates, please note that we are unable to hire in Wyoming and Illinois at this time. We are unable to provide visa sponsorship. Travel to a SpaceXSI site may be required. COMPENSATION AND BENEFITS: US-based candidates: $35/hour - $45/hour depending on factors including relevant experience, skills, education, geographic location, and qualifications. International candidates: Information will be provided to you during the recruitment process. Benefits vary based on employment type, location, and jurisdiction. Benefits for eligible US-based positions include health insurance, 401(k) plan, and paid sick leave. Specific details and role-specific information will be provided to you during the interview process. SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice .

Requirements

Must-haves

Annotate, label, and provide feedback on multilingual audio clips, voice recordings, and speech samples using proprietary tools.
Translate and localize text (UI copy, prompts, responses, and other content) from English into Portuguese, with attention to accuracy, natural phrasing, and cultural fit.
Help produce clear, natural audio data that accurately captures linguistic and prosodic details such as intonation, rhythm, and accent.
Collaborate with technical staff to refine annotation guidelines and tools for handling accents, background noise, speech variation, and multilingual audio.
Proficiency in Portuguese at CEFR C1 level or higher.
English proficiency at CEFR B2 level or higher.
Native proficiency in Portuguese.
English proficiency at CEFR C1 level or higher.
Experience in one or more of the following areas:
Advanced transcription or audio annotation, with strong attention to accents, prosody, disfluencies, and variable recording quality.
Translation or localization work (especially UI, product copy, or conversational text) between English and Portuguese.
Voice recording, voice acting, podcasting, or related audio production that demonstrates clear delivery and attention to sound quality.
Background in linguistics, phonetics, speech sciences, or hands-on work with speech/audio datasets and AI training data.
This is a remote role which may be performed from the following countries:
United States
United Kingdom
Positions are typically offered as fixed-term employment contracts of 6 months. Extensions or conversion to a permanent role may be available based on business needs.
For US-based candidates, please note that we are unable to hire in Wyoming and Illinois at this time.
We are unable to provide visa sponsorship.
Travel to a SpaceXSI site may be required.

Nice-to-haves

None flagged.

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

Platform: greenhouse
Effort: quick

Benefits

Benefits detected in the listing.

Health Insurance

401(K)