I agree that JuMP is great, however most people (outside of academia) aren't solving optimisation problems in a vacuum. Once you start trying to build a useful

I agree that JuMP is great, however most people (outside of academia) aren't solving optimisation problems in a vacuum. Once you start trying to build a useful application with data IO and transformation, configurations, UI, queueing and batch processing, and all that 'boring' stuff around your optimisation program it often gets easier to do it in a different language, like for example python. If nothing else you will have a much larger pool of developers to hire from. You now have the choice between trying to call JuMP from Python and just using a python library like Pyomo, which is almost as good as JuMP.