Adrian Scott Duane posted a complaint on Glassdoor.com about his company IXL Learning days before he was fired. “If you’re not a family-oriented white or Asian straight or mainstream gay person with 1.7 kids who really likes softball—then you’re likely to find yourself on the outside,” Duane wrote.

The transgender mathematician said managers at the education technology company “do not know what the word ‘discrimination’ means, nor do they seem to think it matters.”