Pros
Great benefits and employer 401k match with immediate vesting. ESPP with 15% discount. Just don't hold too long as the stock is volatile and recently plunged 50% in 6 months time. Take advantage of 15% discount and sell day after lockup expires. Some great people in the org.
Cons
Yikes. Where to begin. Vertex has rode its "best in class" tax software (O Series) for too long. From slow, clunky processes to 90% of the organization having very little tax knowledge, the company is in a bad position for the future. Recently they made some questionable outside hires that are cheerleading "AI" but the company is still years behind where up and coming competitors are. Again, combined with very little tax knowledge, most senior level meetings result in little execution of their dreams. Most senior leaders operate with "my way or the highway" and top performers burn out. Data security is strongly lacking in many areas, especially with their outsourcing and departments in India and the Philippines. Shocking they pass audits unless auditor is just rubber-stamping. Their recruiting is terrible. Worst I've ever seen. Great candidates fall out of pipeline when it takes 3-4 weeks to followup after each step in the hiring process. Vertex wants to be a big tech company, but doesn't pay anywhere close to one.