Job Description

ワークスタイル

リモートワーク・在宅勤務 服装カジュアル 残業少なめ フレックスタイム制

募集要項

Custom Media is an award-winning integrated marketing agency based in central Tokyo. We are seeking a reliable, detail-oriented, and proactive Finance & Office Assistant to support our financial operations and office administration.

This is a hybrid role suited to someone who enjoys variety, takes ownership of their work, and can manage both numbers and day-to-day office coordination with confidence.

The Job:

This position supports both finance operations and office/administrative functions. The role is hybrid, requiring at least two days per week working from our Kamiyacho office.

The ideal candidate will be a native Japanese speaker with a good command of English and over three years of office administrative experience.

Job Description:

Key Responsibilities

Finance & Accounting Support

• Manage Accounts Payable and Accounts Receivable , including:
  • Processing vendor invoices and payments in coordination with our outsourced accounting partner
  • Issuing and processing client invoices
• Assist with bank and account reconciliations
• Handle staff expense claims and manage petty cash reporting
• Provide general administrative support to the finance function, including filing, documentation, and responding to internal inquiries
• Support day-to-day financial operations as needed
  

Office Administration & HR Support

• Manage incoming and outgoing communications, including phone calls and postal mail
• Maintain office supplies inventory and coordinate ordering
• Support HR-related administration , including:
  • Coordinating onboarding processes for new hires
  • Liaising with the outsourced accounting firm on HR documentation (health insurance, pension, etc.)
  • Assisting foreign employees with visa-related document preparation
• Run office-related errands when required (e.g., bank, tax office, law office)

応募必要条件

職務経験	3年以上
キャリアレベル	中途経験者レベル
英語レベル	流暢 (英語使用比率: 75％程度)
日本語レベル	ネイティブ
最終学歴	大学卒： 学士号
現在のビザ	日本での就労許可は必要ありません

スキル・資格

Experience & Education

• Bachelor’s degree
• 3+ years of relevant experience in finance administration, office administration, or a similar role
• Experience working in a multicultural environment is highly valued
  

Skills & Competencies

• Language: Native Japanese fluency is essential, with a good command of English
• Organization & Accuracy: Strong attention to detail, excellent numeracy, and the ability to prioritize and manage multiple tasks
• Technical Skills:
  • Proficiency in Microsoft Office and Google Workspace
  • Strong Excel skills (VLOOKUPs and Pivot Tables are a plus)
  • Experience using accounting software
• Work Style:
  • Proactive, flexible, and quality-oriented
  • Able to work independently while collaborating effectively with the team
  • Positive and constructive under pressure

Team Fit

• A collaborative team player who is open to feedback and willing to share ideas
• Professional, dependable, and service-minded

勤務地

• 東京都 23区, 港区
• 日比谷線、　神谷町駅

労働条件

雇用形態

正社員

給与

250万円 ~ 400万円

勤務時間

9:30am - 6:30pm, Monday to Friday

休日・休暇

Saturdays and Sundays, National Holidays and Paid Vacation

配属部署

Finance & Administration

業種

広告・PR

職種

会社概要

会社の種類	中小企業 (従業員300名以下) - 外資系企業
外国人の割合	外国人 半数

Job Tags

リモートジョブ,

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