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Cost Accountant

Oklo · Santa Clara, CA or Remote

Posted Sep 14, 2026

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From the posting

Thanks for your interest in Oklo! We are searching for a Cost Accountant to join our team.

Position Description

The Cost Accountant will play a key role in Oklo's accounting function, with primary responsibility over cost identification and coding for Oklo’s capital project spend, including for plant and inventory workstreams. This role partners closely with project controllers, procurement, accounts payable, and other stakeholders to make appropriate GAAP accounting conclusions for spend, including for capitalization and GL allocation of plant and fixed asset costs. The Cost Accountant will execute internal controls supporting Oklo's SOX environment, assist internal and external auditors, and deliver accurate monthly and quarterly close schedules. The ability to apply accounting policy consistently, investigate variances, and stay organized across a growing asset base will be a critical success factor.

A second critical aspect of this role will be managing and overseeing the Company's fixed assets register. This role will maintain the register and ensure assets are accurately classified, supported, and placed in service on a timely basis. The Cost Accountant will also run monthly depreciation, prepare related journal entries and roll-forwards, and reconcile the fixed asset subledger to the general ledger as part of the month-end close.

Specific responsibilities may include: …

Excerpt from Oklo's public job board. Read the full posting.

About this listing. Pulled automatically from Oklo's public job board and refreshed daily; closed roles are removed. Mars Mining Co. is not the employer, does not take applications and does not screen candidates. Field and level labels come from the job title and can be wrong.

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