Concise Bible Dictionary:

A Levite and his family who returned from exile, and helped in the rebuilding of the temple. He led the devotions of the people and sealed the covenant (Ezra 2:4040The Levites: the children of Jeshua and Kadmiel, of the children of Hodaviah, seventy and four. (Ezra 2:40); Ezra 3:99Then stood Jeshua with his sons and his brethren, Kadmiel and his sons, the sons of Judah, together, to set forward the workmen in the house of God: the sons of Henadad, with their sons and their brethren the Levites. (Ezra 3:9), see margin); Neh. 7:4343The Levites: the children of Jeshua, of Kadmiel, and of the children of Hodevah, seventy and four. (Nehemiah 7:43); Neh. 9:4-54Then stood up upon the stairs, of the Levites, Jeshua, and Bani, Kadmiel, Shebaniah, Bunni, Sherebiah, Bani, and Chenani, and cried with a loud voice unto the Lord their God. 5Then the Levites, Jeshua, and Kadmiel, Bani, Hashabniah, Sherebiah, Hodijah, Shebaniah, and Pethahiah, said, Stand up and bless the Lord your God for ever and ever: and blessed be thy glorious name, which is exalted above all blessing and praise. (Nehemiah 9:4‑5); Neh. 10:99And the Levites: both Jeshua the son of Azaniah, Binnui of the sons of Henadad, Kadmiel; (Nehemiah 10:9); Neh. 12:8,248Moreover the Levites: Jeshua, Binnui, Kadmiel, Sherebiah, Judah, and Mattaniah, which was over the thanksgiving, he and his brethren. (Nehemiah 12:8)
24And the chief of the Levites: Hashabiah, Sherebiah, and Jeshua the son of Kadmiel, with their brethren over against them, to praise and to give thanks, according to the commandment of David the man of God, ward over against ward. (Nehemiah 12:24)

Strong’s Dictionary of Hebrew Words:

from 6924 and 410; presence of God; Kadmiel, the name of three Israelites
KJV Usage:

Jackson’s Dictionary of Scripture Proper Names:

before (literally in front of) God

Potts’ Bible Proper Names:

God going before with benefits; minister of God:―a Levite, Ezra 2:40. {Praeveniens Deus cum beneficiis}