Here is link which may interests you: https://polishforums.com/work/poland-advice-teaching-english-13156/
"optometry, computer science/information technology, geographical information systems and architecture" - you cannot ask generally about Europe, because every country has different supply and demand for different professions. Comparing to the west Poland is not as much technologically developed, so number of jobs in research is lower here then elsewhere. That's why most of graduates of technical subjects, chemistry, biology, pharmacy have to work in different professions.
Currently there is big demand around the world and in Poland for programmers. For that some basics of maths are needed. But the lower ranking university the less they require you to know it.
Architecture was good profession few years ago. But recently occurred boom for this specialty and market got saturated and graduates have problem to find job in this profession in Poland.
"geographical information systems" - don't know what would be that, but graduates of geography usually were searching jobs in teaching, where currently it's nearly impossible to get a job.