Software Test Analyst (Functional, Regression and Performance) for NATO with security clearance

WLG; Den Haag; On-site; EUR 52,000 - 76,000; Full time

Job summary

WLG is seeking a Test Engineer in The Hague to own quality for critical software used in command and control contexts. You will translate requirements into concrete test plans, design cases for functional and performance testing, and probe the system with SQL queries.

You will run API tests using Postman/SOAPUI, decide manual vs automated coverage, and track issues in JIRA. A meticulous, problem‑solving mindset is essential for success in this role.

Qualifications

• Turn requirements into structured test artefacts, not just executing scripts.
• Must be able to write SQL and perform hands‑on API testing.
• Experience with JIRA or similar issue trackers in daily use.
• Demonstrates strong attention to detail and logical problem solving.

Responsibilities

• Analyse requirements and write structured test plans, cases and scenarios.
• Decide what to test manually vs. automatically across functional, regression, performance and security.
• Query databases directly in SQL to verify application behavior.
• Test APIs using Postman, SOAPUI or equivalent tools.
• Log, manage and chase issues through JIRA and related systems.

Skills

Structured test artefacts

SQL querying

API testing

JIRA

Linux

Attention to detail

Tools

Postman

SOAPUI

Selenium

Playwright

Job description

The bugs that matter here are the ones nobody thought to look for. A team in The Hague is delivering gap capability work packages on integrated command and control software, and it needs a test engineer who can own the quality of what ships. On-site in The Hague, Netherlands. What You Will Be Doing

• Analysing requirements and writing structured test plans, test cases and scenarios from them
• Deciding what deserves a manual test and what deserves an automated one, across functional, regression, performance and security testing
• Querying databases directly in SQL to prove what the application is really doing
• Testing APIs with Postman, SOAPUI or the equivalent
• Logging, managing and chasing issues through JIRA
• Hunting the edge cases — the meticulous, logical part of the job that separates a good test engineer from a checklist

What you will need

• Real experience turning requirements into structured test artefacts, not just executing someone else's script
• SQL you can write yourself, and hands-on API testing
• JIRA or a comparable issue tracker as daily habit
• User-level comfort on Linux
• An eye for detail and a problem-solving mindset

Nice to have

• Experience with test automation tooling such as Selenium or Playwright
• Background in command and control or air operations planning environments

Why this one is worth a look Testing here is not a rubber stamp at the end of a sprint — the software is operationally significant, so the quality bar is real and your findings actually change what ships. Normal office environment, an established team, and work that is visibly worth doing.