"perfectly engineered" is correct and usable in written English.
You could use this phrase to describe something that is designed and built with great care and skill, for example "The new helicopter was perfectly engineered with the most advanced technology."
A fresh egg is a perfectly engineered hand heater.
Small kites are notoriously hard to fly, but these are perfectly engineered.
It is perfectly engineered to make us give our sympathies to the wrong man.
"Witness", like And Then There Were None, has a structure that is a perfectly engineered narrative machine.
The brand feels perfectly engineered for the current moment, when both language and politics are being metabolized rapidly and chaotically into the cultural bloodstream.
Trump's personalization of the conflict has introduced a new playbook that seems almost perfectly engineered to trigger Kim's paranoia and animosity.
You could argue that these are pure games: perfectly designed minisystems engineered to take us directly to the core of gaming pleasure without the distraction of narrative.
A Barcelona chair becomes a fully eroticized object — "the angle of recline, the shortened legs, the offered-to-the-sky cant of the seat, it was engineered perfectly for someone to give, for someone to receive" — while a pair of plastic surgery patients, "given their gigantic white head-bandages and the underwater slowness with which they moved," resemble "very relaxed astronauts".
Rather than blindly growing out, the festival, now in its fifth year, seems to have grown further in; calling in more and more of the underground — perfectly curated, precision engineered, niche noise.
One author said "Universe (1987) or Dark Angel (1990), demonstrates that nature and his [Lundgren's] hairdresser have suited him perfectly to Nazi genetically engineered baddie roles".
Whereas it is rather challenging to build mutually resonant high finesse cavities in the optical regime, it is for microwave photons perfectly feasible to engineer large arrays of mutually resonant cavities on one chip in an architecture known as circuit-QED [6, 7].
