I've been using the solution for the last 12 months. 

I have been using Mendix for the last three years.

I have been working with Mendix for two years.

I have been using it since 2011. 

I received my basic certification for Mendix last year, so I have recent experience with the solution.

I've used the solution for two or three years. 

I've used the solution for one year. I used it until last week. 

We put the solution into production about a year ago now.

I have been using the solution for the past three years.

I've used the solution for probably about a year. 

I've been evaluating the solution for three months. Before I evaluated Mendix, I evaluated OutSystems for six months.

I've used the solution for a while.

I've been dealing with the solution for two years at this point.

I have been using Mendix for a couple of years.

I've been using the solution for one month. I've just started using the product.

We have been using this solution for one year. 

I have been working with Mendix for 10+ years.

I’ve used Mendix for a short period of time - maybe half a year. OutSystems I’ve used a little bit longer.

We started this journey with Mendix just a couple of months ago.

I've been working with Mendix for a bit more than one year. We're using Mendix Eco System version.

I've been using it for over four years.

I have been using Mendix as a system for almost nine months.

I worked at Mendix in 2014. I did not stop using it when I left the company in 2015, so three years.

I've used this product since 2010, that is six years.

We've used it for six years, since 2010.

A half year.

I started with v5.7 approximately two and a half years ago.

We have used this solution for four and a half years.

Since 2010

We've used it for one and a half years/

We've been using it for two and a half years.

I've used it for two years.

We've used it for 10 years.

Over the last four and half years I've used versions 3.2.1, 4.8.10, 5.13, and 5.14.1.

More than 3 years

We have used the solution in the past 12 months.