彼は経済的背景がしっかりしている。

Meaning
he has a solid economic background

Vocab used in this sentence

he, his, him, boyfriend
a, the, is, am, are, will
経済
economic, economy, economics, business, finance
a, mark, typical, target, objective
背景
background, backdrop, context, setting, behind, circumstance, scenery
is, there, but, ga, will, however
しっかり
tightly, firmly, properly, steadily, solidly, reliably
and, shi, four, death
the, it, have
いる
are, to be, to stay, to have, necessary, to exist

The developer Jeffrey van Binsbergen is known for his high quality work and optimalisations.