Eisai researches, develops, manufactures, and sells pharmaceuticals, and handles their import and export. It is headquartered in Koishikawa, Bunkyo-ku, Tokyo, and its Japanese sites include the Kawashima plant in Gifu, the Kashima site in Ibaraki, and research laboratories in Tsukuba and Kobe.
エーザイ株式会社
Pharmaceutical
Tokyo
2,979
Japanese-owned
Prior 30 days: 0
Tracked Since: July 2026
Eisai researches, develops, manufactures, and sells pharmaceuticals, and handles their import and export. It is headquartered in Koishikawa, Bunkyo-ku, Tokyo, and its Japanese sites include the Kawashima plant in Gifu, the Kashima site in Ibaraki, and research laboratories in Tsukuba and Kobe.
エーザイ株式会社
Pharmaceutical
Tokyo
2,979
Japanese-owned
Prior 30 days: 0
Tracked Since: July 2026
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Information Technology is 15% of Eisai's open roles, against 2% across Pharmaceutical employers.
Eisai posts the most Information Technology roles across Pharmaceutical employers: 5 of 22, ahead of Kobayashi Pharmaceutical (3).
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Shares are across this company's live postings on October 1, 2026, measured against industry peers from the same day. A sentence is hidden when either side has too few postings to compare fairly.
How this company's hiring compares with similar employers, on the same measures.
Peers: 50 Pharmaceutical employers hiring in Tokyo.
Peer figures are per-employer averages or shares across the peer group, from live postings on October 1, 2026. A row is hidden when either side has too few postings to compare fairly.
Openings by Location
Tokyo
8
Ibaraki
6
Gifu
1
Hyogo
1
Location not stated
18
As of October 1, 2026 · tracked daily since July 25, 2026 · a dotted stretch is an estimate between the days either side of it, and a break in the line is a day we could not verify at all
State a Japanese Level
Professional Working Proficiency (JLPT N2)
3%
No mention
97%
State an English Skill
Native/Fluent (TOEIC 945-990)
3%
Professional Working Proficiency (TOEIC 785-944)
35%
Limited Working Proficiency (TOEIC 550-784)
15%
Mentioned, level not specified
21%
No mention
26%
Across 34 live postings with readable descriptions. A posting can state both languages.
Researching pay for a role here? See the Japan Salary Guide
Figures on this page come from daily checks of the company's own careers page, tracked since July 25, 2026. When a number cannot be measured reliably, it is hidden rather than estimated. Report a data issue.
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