freelance data annotator

Ironhack, en colaboración con programas de formación oficial, busca un/a Formador/a Especialista en Big Data (Freelance) para impartir el curso: Especialista en Big Data, con fechas desde el 3 de noviembre de 2026 al 11 de marzo de 2027, en Bilbao, presencial.El objetivo es capacitar al alumnado en tratamiento y gestión de grandes volúmenes de datos...

MYTRAFFIC in Spain seeks a freelance Solution Engineer for a 4-5 month mission to own end-to-end custom data projects for our busiest season. You will deliver ~2 client projects per month, from qualification to restitution.You will work with Python (pandas), SQL (BigQuery/Snowflake), and create dashboards and restitution decks; fluent Spanish and English...

Overview Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. What This Opportunity Involves While each project involves unique tasks, contributors may: Design original computational data science...

G2 Recruitment is seeking a Freelance Project Manager with a Controls Engineering background for a hyperscale Data Centre project in Zaragoza, Spain. The role demands strong leadership of day-to-day service tickets, maintenance planning, and on-site vendor coordination.You will oversee BMS/EBMS tasks, report progress, and drive solutions in a fast-paced,...

G2 Recruitment is seeking a Freelance Project Manager with a Controls Engineering background for a hyperscale Data Centre project in Zaragoza, Spain. La siguiente información ofrece un resumen de las habilidades, cualidades y cualificaciones necesarias para este puesto. The role demands strong leadership of day-to-day service tickets, maintenance planning,...

A leading AI technology firm is seeking a Data Science AI Trainer to design complex data science problems for AI projects. The role requires a Master's or PhD in a quantitative field and over 5 years of experience. Candidates should be proficient in Python and statistical analysis and have expertise in GenAI technologies. This is a fully remote, part-time...

G2 Recruitment is seeking a Freelance Project Manager with a Controls Engineering background for a hyperscale Data Centre project in Zaragoza, Spain. The role demands strong leadership of day-to-day service tickets, maintenance planning, and on-site vendor coordination. You will oversee BMS/EBMS tasks, report progress, and drive solutions in a fast-paced,...

A leading AI development company seeks annotators for flexible, remote freelance projects involving the review and classification of data.¿Tiene su CV preparado? Si es así y confía en que este es el puesto ideal para usted, asegúrese de enviar su solicitud lo antes posible.Responsibilities include evaluating AI-generated content and ensuring factual...

SummaryDé el siguiente paso en su carrera profesional ahora: desplácese hacia abajo para leer la descripción completa del puesto y envíe su solicitud.The Data Annotator is responsible for reviewing collected data to confirm integrity, organization, and alignment with program requirements. This role requires strong reporting skills, familiarity with basic...

This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. ...

¿Te interesaría seguir desarrollándote como comisionamiento de sistemas eléctricos de potencia y buscás un proyecto internacional de alto nivel técnico? Sumate como Commissioning Engineer especializado en Data Centers Modulares Prefabricados (PreFab) para uno de los líderes globales en gestión de energía. Desde Oxigent Technologies seleccionamos...

Docplanner is seeking a Freelance Spanish Data Annotation Specialist to prepare and curate linguistically and medically oriented datasets in Spanish for ML and NLP initiatives. Consulte la descripción del puesto a continuación. Si confía en que tiene las habilidades y la experiencia adecuadas, envíe su solicitud hoy mismo. You will work independently...

RWS is seeking AI Conversation Recording Contributors for a Catalan speech data collection project. Para presentar una candidatura, simplemente lea la siguiente descripción del puesto y asegúrese de adjuntar los documentos pertinentes. This freelance, work-from-home role offers flexible, task-based input (approximately 2-4 hours daily) with an immediate...

Jobgether is seeking an Ad Creative Strategist (Freelance) based in Spain to shape performance-driven creative strategies for social media advertising. You will collaborate with creators, copywriters, designers, motion developers, and media buyers to translate ideas into high-performing assets and test for continuous optimization. The role requires 3+...

Docplanner is seeking a Freelance Spanish Data Annotation Specialist to prepare and curate linguistically and medically oriented datasets in Spanish for ML and NLP initiatives. You will work independently with our NLP experts to ensure data accuracy for the Spanish market and contribute to AI-driven medical products. Ideal candidate has a strong Spanish...

Data Analyst French Native Speaker (Python & SQL) - Spain Remote Madrid, SpainFull timeRJoin us on our exciting journey!We are recruiting a new Data Analyst with work knowledge of Python & SQL and proficient in French language.Under guidance, performs data analytics activities related to complex business problems and issues to provide insight to decision...

Data Analyst French Native Speaker (Python & SQL) - Spain Remote Madrid, SpainFull timeRJoin us on our exciting journey!We are recruiting a new Data Analyst with work knowledge of Python & SQL and proficient in French language.Under guidance, performs data analytics activities related to complex business problems and issues to provide insight to decision...

Data Analyst French Native Speaker (Python & SQL) - Spain Remote Madrid, SpainFull timeRJoin us on our exciting journey!We are recruiting a new Data Analyst with work knowledge of Python & SQL and proficient in French language.Under guidance, performs data analytics activities related to complex business problems and issues to provide insight to decision...

How You'll Contribute As a Freelance Spanish Data Annotation Specialist at Docplanner, your main focus will be preparing and curating linguistically and medically oriented datasets in Spanish to power our machine learning and natural language processing (NLP) initiatives. You will work independently while maintaining clear communication with our NLP experts,...

Overview Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. What This Opportunity Involves While each project involves unique tasks, contributors may: Design original computational data science...