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Data Analyst

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Job Title: Senior Data analyst  

Duration: 12 months+

Location: Rotterdam (Remote/Hybrid)

Employment: Freelance

Overview
We are seeking a Senior Data Analyst to lead data-driven initiatives across multiple long-term projects (12 months minimum). The ideal candidate is an autonomous, technically strong analyst with experience sourcing and processing public and open-source data, working with 3rd-party and social-media datasets, and fine-tuning existing machine-learning models (not building from scratch).


Key Responsibilities

  • Data Collection & Crawling
    • Design and maintain pipelines for crawling and extracting data from public websites and open-source sources.
    • Ensure compliance with data-use policies and robust documentation.
  • Data Processing & Analysis
    • Clean, transform, and structure large datasets from social media platforms, audience-survey initiatives, and third-party providers.
    • Conduct exploratory analyses and deliver insights to support strategic decisions.
    • Machine Learning Support
      • Fine-tune existing ML/NLP models (no need to build from scratch).
      • Evaluate model performance and recommend improvements.
      • Technical Development
        • Build and optimize data workflows using Python.
        • (Bonus) Contribute to backend tasks using TypeScript/Node.js.
        • Manage cloud-based infrastructure and pipelines in Google Cloud Platform (GCP).
        • Work with structured data in PostgreSQL.
        • Project Ownership
          • Operate with autonomy on multi-month initiatives.
          • Coordinate across internal teams.
          • Deliver actionable insights and data products on time.
          • Cross-Project Contribution
            • Support multiple concurrent projects, ensuring high quality across varying datasets and use cases.
            • Help develop internal best practices for data ingestion, validation, and analysis.

              Required Qualifications

              • Proven experience in data analytics, data engineering, or related fields (minimum 12 months of relevant hands-on work required).
              • Proven experience with web crawling, public-source data extraction, and open-source datasets.
              • Strong proficiency in Python.
              • Experience fine-tuning ML models (e.g., NLP, classification, embeddings).
              • Cloud experience with GCP.
              • Strong SQL skills, ideally PostgreSQL.
              • Excellent English communication skills.
              • Demonstrated ability to work independently and lead complex projects.
              • Excellent communication and interpersonal skills for effective stakeholder engagement.
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