Data Analyst — Operational Analysis (Python, Power BI, Modelling) for NATO with security clearance

Wlgroup; Den Haag; On-site; EUR 42,000 - 52,000; Full time

Job summary

Wlgroup in The Hague is hiring a junior operational analyst to collect, collate and analyze data, and present findings in a concise, decision-ready format under tight deadlines.

You will use Python and advanced spreadsheets to create dashboards and written reports, supporting the team with verified datasets and clear recommendations.

Qualifications

• Recent experience conducting analysis that fed a real decision.
• Ability to review and analyse large data sets with commercial and in-house tools.
• Working Python, expert-level spreadsheet skills, and confidence with dashboard tooling.
• A methodical habit — verified data, stated assumptions, reproducible steps.
• Clear written and spoken English.

Responsibilities

• Undertake data and operational analysis on complex problems, often with large data sets and simple tools.
• Apply operational analysis techniques — modelling, what-if analysis and wargaming among them.
• Collect, collate and analyse data across a range of sources and tools, including Python and advanced spreadsheet work.
• Present findings concisely and logically, so the method is as visible as the answer.
• Produce verified, validated and consistent data sets under time pressure.
• Summarise results into dashboards, presentations and written reports.
• Support the team in developing and updating documentation and reports.

Skills

Python

Advanced Excel

Dashboard tools

Data analysis

English proficiency

Tools

Power BI

Excel

Job description

Operational analysis is the discipline of answering hard questions with evidence when the decision cannot wait for perfect data. This is a junior post inside that team: you would do the collection, the collation and the analysis, and present it back in a form that stands up to scrutiny.

It suits someone early in their analytical career who is genuinely comfortable with a messy data set and unbothered by working to a deadline — the output here is often needed for a decision the same week.

What you would be doing

• Undertake data and operational analysis on complex problems, often with large data sets and simple tools.
• Apply operational analysis techniques — modelling, what-if analysis and wargaming among them.
• Collect, collate and analyse data across a range of sources and tools, including Python and advanced spreadsheet work.
• Present findings concisely and logically, so the method is as visible as the answer.
• Produce verified, validated and consistent data sets under time pressure.
• Summarise results into dashboards, presentations and written reports.
• Support the team in developing and updating documentation and reports.

What you would bring

• Recent experience conducting analysis that fed a real decision.
• Ability to review and analyse large data sets with commercial and in-house tools.
• Working Python, expert-level spreadsheet skills, and confidence with dashboard tooling.
• A methodical habit — verified data, stated assumptions, reproducible steps.
• Clear written and spoken English.

The work is full time on site in The Hague.