Architect of the Nine - Book 1 of The Aesir Saga

When billionaire engineer Elijah Erickson drills beneath the frozen bedrock of Svalbard in search of a limitless energy source, he discovers something humanity was never meant to wake.
Buried beneath the Arctic ice lies an ancient vault tied to the Nine Realms, the Elder Futhark, and gods long dismissed as myth. Elijah’s attempt to harness its power shatters the seals between worlds, awakens Odin and the Aesir, and unleashes the first waves of Fimbulwinter across modern Earth.
As cities freeze, technology fails, and Frost Giants march into Midgard, Elijah is forced to do what he has always done best: build.
Using forbidden runic knowledge and cutting-edge engineering, he begins forging Mithfarduthr, an unprecedented fusion of technology and ancient power. But every rune has a cost, and the deeper Elijah reaches into the architecture of the Nine Realms, the more he realizes that saving humanity may require more than defeating monsters.
It may require challenging the gods themselves.
Blending Norse mythology, science fiction, apocalyptic fantasy, and high-stakes technological warfare, Architect of the Nine is the explosive first book in The Aesir Saga.