Arthur Cavalcanti
São Paulo
Summary
I have been working as an AI Data Annotator since April 2025, contributing to remote projects focused on content evaluation and communication quality. My responsibilities include classifying prompts by intent, evaluating AI-generated responses based on quality criteria, and providing detailed written feedback in English. I also support the training of multimodal models through audio transcription and audiovisual annotation tasks, ensuring accuracy and practical usefulness of the outputs. Prior to this role, I gained experience teaching English and working in support roles at summer camps in the United States, which strengthened my communication, organizational, and teamwork skills. I am currently studying International Relations at Centro Universitário Cidade Verde, with an expected graduation in 2027. I hold an advanced English certification (C1) from EF SET, which complements my work on multilingual projects. I'm passionate about video games and online communities, and have been for over 15 years, contributing to my familiarity with digital environments, assertive communication, and quick decision-making. These skills translate directly into customer service roles and remote projects that require agility, focus, and effective collaboration.
Overview
1
1
Certification
2
2
years of professional experience
Work History
AI Data Annotator
Outlier
04.2025 - 03
- Classify prompts by intent (e.g., informational, query-based) and evaluate AI responses using standardized quality rubrics.
- Review multilingual (PT/EN) generations for clarity, accuracy, coherence, and helpfulness.
- Localized in-game content from English to Brazilian Portuguese, including HUD elements, menus, quick menus (item names), system instructions, dialogue lines, and general catalog text.
- Worked closely with the developer and UI team, following defined localization scopes while independently handling translation and localization tasks.
- Adapted dialogue and UI text to sound natural, immersive, and culturally appropriate for Brazilian players, maintaining narrative coherence and original story intent.
- Applied creative linguistic adaptation to character dialogue, adjusting tone and register (e.g., concerned, playful) based on character personality and audio intent, while respecting localization constraints.
- Played the game to fully understand in-game context, ensuring dialogue and instructions aligned correctly with gameplay situations and narrative flow.
- Collaborated with another Brazilian linguist to review and cross-check localized content, identifying unnatural phrasing, contextual mismatches, and inconsistencies before submission.
- Identified and corrected linguistic issues caused by isolated strings or missing context, ensuring clarity and immersion once implemented in-game.
- Worked within technical constraints, such as character limits and UI space, balancing natural language with layout and readability requirements.
- Delivered localization using Google Docs and Sheets, following a structured workflow and meeting project expectations and deadlines.
- Produce detailed evaluator feedback in English, explaining ratings with reference to task guidelines and expected model behavior.
- Score single-model outputs and conduct side-by-side comparisons to determine relative response quality.
- Support multimodal model training through audio transcription and audiovisual annotation tasks, adhering to project-specific standards.
English Teacher
MEU Espaço Linguístico
02.2024 - 07.2025
- Worked as an English teacher in a hybrid format, delivering both in-person and online classes with a strong focus on conversation and practical language use.
- Planned and delivered most lessons in a personalized manner, adapting content to each student's profile, interests, and learning goals, while using school-provided materials when appropriate.
- Designed engaging and contextualized lessons that connected language learning to students' real-life experiences, encouraging active participation and fluency development.
- Monitored individual student progress and provided ongoing, flexible feedback tailored to each learner's needs, without rigid assessment models, respecting different learning paces and objectives.
English Teacher
One Way Línguas
07.2024 - 06.2025
- Worked as an English teacher for children (ages 9-13), teenagers, and adults, teaching in in-person and hybrid group classes using a well-established method with over 30 years of application, based on repetition, free practice, and constant language use, aligned with defined curriculum goals.
- Conducted classes entirely in English from beginner level, promoting language immersion and a balanced development of conversation and grammar skills in accordance with pedagogical alignment principles.
- Planned and delivered group lessons with autonomy to adapt examples, topics, and activities (such as ice-breakers), while following the school's pedagogical framework and ensuring curriculum consistency.
- Applied and evaluated continuous assessment tools, including check-outs, writing tasks, and closed-book tests focused on practical language use.
- Assessed student performance through cumulative tests aligned with Cambridge-style exams (PET), providing structured content review and general and individual feedback at key points throughout the semester.
- Taught up to intermediate level according to Cambridge certification, maintaining a teaching approach grounded in balance, reflection, and strong pedagogical alignment.
Customer Service Representative
TMKT
04.2023 - 02.2024
- Provided customer support via voice, chat, and WhatsApp for insurance products, including Extended Warranty and Theft/Loss coverage.
- Managed 20-40+ customer interactions per day while maintaining high service quality standards.
- Maintained average handling times below 7 minutes for voice calls and 15 minutes for chat/WhatsApp, handling up to two chats simultaneously.
- Guided customers on policy coverage, claim initiation, complaint analysis, and issue resolution.
- Logged requests and cases accurately, following internal procedures and compliance requirements.
- Communicated with empathy, clarity, and confidence, ensuring customer reassurance in sensitive situations.
Education
Associate - Microelectronics
FATEC SP
São Paulo07-2027
Associate of Applied Science - Microelectronics
FATEC SP
São Paulo07-2027
Skills
- Multichannel Customer Support (Voice, Chat, WhatsApp)
- Customer communication & empathy
- Problem-solving & conflict resolution
- CRM & ticketing system familiarity
- Google Workspace & Microsoft 365
- Typing: 50 WPM
- Data entry & documentation accuracy
- Remote-ready: fast laptop second monitor
Certification
EF SET English Certificate, 69/100 (C1 Advanced), 11/01/25, cert.efset.org/FGAidg
Timeline
AI Data Annotator
Outlier
04.2025 - 03
English Teacher
One Way Línguas
07.2024 - 06.2025
English Teacher
MEU Espaço Linguístico
02.2024 - 07.2025
Customer Service Representative
TMKT
04.2023 - 02.2024
Associate - Microelectronics
FATEC SP
Associate of Applied Science - Microelectronics
FATEC SP
Personal Information
Title: AI Data Annotator