freelance data annotator

RWS is seeking AI Conversation Recording Contributors for a Catalan speech data collection project. This freelance, work-from-home role offers flexible, task-based input (approximately 2-4 hours daily) with an immediate start date. You will record natural speech, annotate data, and provide metadata for AI research. Fluency in Catalan and strong English are...

RWS invites AI conversation recording contributors to join a Catalan speech data collection project. This freelance, remote role offers flexible, task-based work with roughly 2–4 hours daily and an immediate start. You will record natural speech, annotate data, and provide metadata for evaluation of speech recognition and conversational AI systems. Strong...

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...

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+ years...

En este momento estamos buscando un Data Engineer con experiencia en Snowflake para una serie de vacantes que estamos trabajando a nivel nacional e internacionalExperiencia sólida en SnowflakeExperiencia en Python y SparkConocimientos de entornos cloud, preferiblemente AWSExperiencia en sector bancarioConocimiento de entornos ADAManejo de diseño y...

About RealAdvisorRealAdvisor is one of the leading digital platforms in the European real estate ecosystem. Founded in Switzerland, we now support 7,000+ real estate agencies and attract 10+ million users per year across Europe. We are scaling fast across multiple markets with a clear mission: help real estate professionals grow through data,...

Vermont Solutions busca un/a Ingeniero/a de Datos con 3–4 años de experiencia para unirse a un equipo tecnológico en entorno bancario. Participarás en pipelines de datos, APIs y servicios backend en un proyecto 100% remoto desde España, con modalidad freelance o duración determinada por baja de paternidad. Se valorará experiencia en Spark, Databricks...

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.What We...

Data Analyst / Engineer Senior - Freelance (remote in Spain) Largest producer of farmed Atlantic salmon Aquaculture / Seafood. It is the world's largest producer of farmed Atlantic salmon and one of the largest seafood companies globally. Strong experience with Snowflake, including data modelling and analytical architecture design. Advanced proficiency in...

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. What...

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,...

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...

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...

Jobs for Humanity is seeking a freelance online data analyst to support the enhancement of digital maps. You will verify and compare data in a web-based environment, focusing on the relevance and accuracy of information while working from home on a part-time long-term project. Open to candidates with full professional proficiency in Spanish, the role...

Perit AI (YC F26) is seeking freelance AI Data Annotators to align spoken Spanish to transcripts, correcting boundaries and mis-transcriptions for precise timing. You’ll apply detailed guidelines across large volumes of work. The role is fully remote and highly flexible: no fixed schedule, no minimum weekly commitment. You pick tasks when available and...

We’re expanding our team across Spain and looking for passionate sports fans to join us as Sports Data Scouts. If you enjoy live sports and want a flexible opportunity to earn extra income, we'd love to hear from you. What you'll do Attend live sporting events in your area and collect real-time statistics using our proprietary mobile application (available...

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. What...

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.What We...

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 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...