Bilingual Administrative & Support Professional

Jan Lems

Dutch & English Bilingual · Data & Process Focused · Lisbon

I'm bilingual in Dutch and English. I work carefully with data and handle customer-facing tasks with the same attention to detail.

  • NativeDutch
  • FluentEnglish
  • B2German

Skills → Strengths

What my experience translates into. Each strength below comes from real work, mapped to the skill it supports.

Experience

My past roles, and the skills from them that carry into administrative work.

  1. 2024 to Present Cognizant · Lisbon

    Content Analyst, Trust & Safety (German queue)

    • Apply detailed policy rules to individual cases with consistent precision.
    • Maintain a 100% quality-assurance accuracy record across audited cases.
    • Work to structured processes and SLAs under tight targets.
  2. 2021 to 2025 Self-employed

    Reselling & E-commerce Operations (Owner)

    • Ran sourcing, listings, pricing, customer contact and logistics independently.
    • Balanced multiple parallel tasks with full ownership of outcomes.
    • Handled customer questions and after-sales communication directly.
  3. Earlier Orange Uni · Remote

    Customer Service Representative

    • Resolved customer enquiries by mail and phone (front-office support).
    • Communicated clearly and professionally under volume.
  4. Earlier Spotta & Concrelit

    Logistics & Production roles

    • Worked reliably within structured operational processes and schedules.
    • Built the discipline and consistency that underpin accurate routine work.

Projects

Projects where I put the data and process skills above into practice. All data shown is synthetic.

Preview of the HR Data Quality project: department bar chart, active-vs-terminated donut, and a 5,100-to-4,174 record count.

HR Data Quality Pipeline

I built a synthetic 5,000-record HR dataset and seeded it with realistic defects, then profiled it in SQL and cleaned it with a documented 12-rule Python pipeline (duplicates, date formats, controlled vocabularies, orphaned references, impossible dates). It includes a before/after view and an interactive workforce dashboard.

  • Python
  • pandas
  • SQL / SQLite
  • Excel
  • Plotly
  • Data cleaning

Tools & Systems

The tools and systems I use, plus my certifications.

Skills

  • Microsoft Excel
  • MS Office (Word, Outlook)
  • SQL
  • Python
  • Data handling & record-keeping
  • Customer-service tooling

Certifications

  • Prompt Engineering Foundation (Cognizant, 2025)
  • Generative AI Fundamentals (Cognizant, 2025)

About

I'm bilingual in Dutch and English and I work in Trust & Safety. Accuracy is the core of the job. I apply policy correctly, case by case, and hold a 100% quality record across audited cases.

These skills carry into administrative work. I handle data carefully, follow structured processes, and communicate with customers clearly by mail and phone. I also ran my own business for four years, so I'm used to working on my own.

I have a Gymnasium diploma and studied toward an LLB at Tilburg and Data Analytics at Hogeschool Rotterdam. I didn't finish either program, but the legal, administrative and data work still helps me. I'm reliable, organized, and I focus on getting the details right.

Contact

I'm open to new opportunities. Feel free to get in touch.