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Senior AI Data Engineer - Colombia (Remote, Part-time) Job Opening In Colombia, Colombia – Now Hiring Welocalize


Job description

Welocalize is seeking a Senior Data Engineer with world-class Python expertise and a sharp eye for data quality, engineering rigor, and visualization fidelity.In this role, you will create realistic datasets, write intuitive prompts, and develop high-quality “golden plots” to power insightful data tasks.

You'll bridge technical precision with real-world plausibility—crafting examples that meet strict quality rubrics and correctness criteria.Role DetailsLocation: RemoteCommitment: Part-time, flexible hoursThis is a large-scale project with a leading global tech company, with an immediate start and a first delivery in SeptemberCompensation: Competitive hourly rate

🔍 Key Responsibilities

📊 Dataset Design & Curation
  • Design and build realistic toy/dummy datasets at varying complexity levels (simple, moderate, complex).
  • Ensure datasets reflect real-world scenarios while remaining clean, reproducible, and well-structured (CSV format).
  • ✏️ Prompt Engineering
  • Write concise, natural-language prompts (< words) tailored for business analysts.
  • Ensure prompts are grammatically precise and align with project style (non-technical, not overly directive, no raw metric requests).
  • 📈 Golden Plot Creation
  • Reproduce target visualizations with aesthetic and analytical fidelity.
  • Write clean, reproducible Python code using libraries like pandas, matplotlib, seaborn, and plotly.
  • Maintain high-quality code standards: well-commented, organized, and reproducible.
  • Correctness Criteria & Documentation
  • Define correctness criteria tailored to open-ended insight prompts.
  • Ensure criteria are flexible, accurate, and avoid assuming fixed solutions.
  • Provide supporting documentation with expected values and metrics (, means, correlations, test results).
  • 🕵️ Quality Assurance
  • Rigorously check each example against quality rubrics (correctness, completeness, clarity, justification).
  • Maintain a high standard of accuracy across data, prompts, and visualizations.
  • Required Qualifications

  • + years of professional experience in data engineering or applied data science.
  • Expert-level proficiency in Python (data wrangling, visualization, statistical testing).
  • Deep understanding of data modeling, prompt crafting, and reproducible workflows.
  • Exceptional attention to detail and quality control.
  • Proven success in high-impact technical environments.
  • Preferred Qualifications

  • Experience with statistics, hypothesis testing, and storytelling with data.
  • Background in producing training data, developer tools, or reproducible research.
  • Strong writing skills for crafting precise prompts and correctness criteria.
  • Disclaimer

  • Please note: As this opportunity is intended for experienced professionals, applicants will be required to complete both an English proficiency assessment and a Python skills test.

    These evaluations are designed to ensure the necessary level of expertise for the role.

    We kindly ask that only those with relevant experience apply.
  • If you're a data expert who thrives on quality, clarity, and impactful engineering, we’d love to hear from you.

    Required Skill Profession

    Computer Occupations


    • Job Details

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