The 27-year-old has made a limited amount of appearances over the past three seasons in his home country with Sparta Prague, but wants to use pre-season as a strong foothold as he competes with James Shea for a first team starting place.
He said after the 2-1 against Bedford Town: "I was really pleased, it's the first time I have played in a long time and I am buzzing to get back on the pitch and play with the lads.
"I started on Monday, I had to move from the Czech Republic, so it has been a good week. These pre-season games are all the same, just want to get the fitness up and get back in the game and I am happy with the win.
"I am all settled in. Two weeks ago I drove over with a couple of cases inside the car. We go to Slovenia and when we get back we are moving into an apartment, so [I have settled in] really quickly."
All of the Town's new signings this summer have spoken of their delight at the new training ground at the Brache, and Stech believes that helps raise the profile of the club.
"It's not a League Two club. It's definitely Championship, towards Premier League," he continued. "The training ground is absolutely outstanding and all the staff and the lads are absolutely brilliant, so I couldn't ask for anymore."
His bond with Town manager Jones was a massive part in bringing the 6ft 5in stopper to Kenilworth Road, as the former West Ham United and Yeovil Town man had a number of clubs vying for his signature.
"I had a few different offers but I had my wedding in the summer," said Stech.
"The gaffer rang me two days before my wedding, he told me about the project, what this football club wants to achieve and I was really keen on that.
"I know the gaffer, because I played with him when I was at Yeovil and I know what he wants to do, to get from me and the lads and we need to show that on the pitch this season. We want to win every game and we want to get promoted, that's the aim this season."