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Staff Accountant

Mimecast


Job Location:

Johannesburg - South Africa

Monthly Salary: Not provided by the employer
Posted: 8 August 2026 (30+ days ago)
Application Deadline: 5 November 2026
Vacancies: 1 Vacancy

Job Summary

Staff Accountant

About Mimecast

Mimecast is a global cybersecurity company founded in 2003 and headquartered in London that helps organisations defend against email- and collaboration-based cyberattacks. The business serves more than 40000 customers across over 100 countries with global offices spanning North America Europe the UK Africa Australia Singapore and India.

Mimecasts platform has expanded well beyond its original email security roots to cover advanced email and threat protection email continuity secure messaging cloud archiving and eDiscovery data security and insider risk management (including its Incydr technology) human risk management and security awareness training brand protection and emerging AI governance capabilities. This breadth has grown through a series of acquisitions including Code42 Elevate Security and Aware.

Mimecast was previously listed on the NASDAQ Global Select Market (ticker: MIME) but is now privately owned by Permira a global private equity firm following its 2022 take-private transaction. The company continues to report financial results internally to its owners and lenders using US GAAP while its South African regional accounting team is responsible for ensuring full compliance with South African statutory tax and regulatory obligations alongside this group reporting.

Position Summary

The Junior Accountant / Staff Accountant will support the South African regional accounting team across statutory compliance management reporting balance sheet integrity and day-to-day financial operations. This is an entry-to-early-career role suited to a newly qualified or part-qualified accountant (SAIPA/SAICA trainee route) looking to build a career within a multinational US GAAP and local IFRS-reporting environment while developing strong South African regulatory and compliance knowledge.

What Youll Do:

Financial Reporting & Month-End Close

  • Prepare journal entries and assist with month-end and quarter-end close within tight deadlines.
  • Prepare monthly balance sheet account reconciliations investigating and resolving discrepancies timeously.
  • Assist in preparing monthly and quarterly management accounts including variance analysis against budget and prior periods.
  • Reconcile and maintain general ledger accounts calculate and manage accruals and prepayments liaising with the business to ensure balances are adequate and supportable.

South African Statutory & Tax Compliance

  • Assist with B-BBEE data gathering and reporting requirements as needed for South African contractual and procurement purposes.
  • Maintain awareness of POPIA requirements when handling employee and customer financial data.
  • Ensure correct VAT treatment on vendor bills processed.
  • Internal Controls Audit & Group Compliance
  • Support the annual statutory audit process including preparation of audit schedules and responses to auditor queries.
  • Support compliance with the companys Sarbanes-Oxley (SOX)-aligned internal control framework (retained from its previous public-listing era) including documentation and testing of controls.
  • Ensure documented internal controls are followed to safeguard a strong internal control environment identifying efficiencies and improvement areas.

Treasury Fixed Assets & Systems

  • Perform bank reconciliations and day-to-day treasury and cash reporting.
  • Maintain and review the NetSuite Fixed Asset Register including depreciation calculations impairment testing disposals and reporting.
  • Prepare intercompany entries and support multi-currency reporting and reconciliation.
  • Business Support & Ad-Hoc
  • Provide value-added analysis and support to other areas of the business as Mimecasts South African operations evolve.
  • Undertake other duties as requested by the Finance Manager/Director including covering during periods of high workload or staff absence.

What Youll Bring:

  • A relevant Bachelors degree in Accounting Finance or a related field (BCom Accounting Auditing).
  • SAIPA or SAICA articles / trainee accountant route preferred; part-qualified or finalist ACCA/CIMA/CA(SA) candidates will also be considered.
  • 13 years relevant accounting experience ideally including exposure to month-end close under deadline pressure.
  • Working knowledge of South African tax legislation including the VAT Act Income Tax Act and Companies Act.
  • Exposure to IFRS (or IFRS for SMEs) is essential; exposure to US GAAP is advantageous given Mimecasts US GAAP group reporting requirements.
  • Experience with NetSuite or a similar ERP system is advantageous.

Skills & Attributes

  • Methodical diligent accurate and accountable with excellent attention to detail.
  • Strong organisational skills with the ability to multi-task and deliver high-quality work to deadlines.
  • Strong analytical skills and a willingness to challenge the status quo and drive process improvement.
  • Team player with a positive personable attitude who wants to grow within a dynamic global environment.
  • Sound working knowledge of Microsoft Excel; comfortable working with multi-currency data.
  • Clear professional communication skills with the credibility to liaise across the broader finance function.

Join our Finance team to accelerate your career journey. You will be immersed in a dynamic environment that recognizes and celebrates your achievements.

Mimecast offers formal and on-the-job learning opportunities maintains a comprehensive benefits package that helps our employees and their family members to sustain a healthy lifestyle and importantly - working in cross functional teams to build your knowledge!

Our Hybrid Model: We provide you with the flexibility to live balanced healthy lives through our hybrid working model that champions both collaborative teamwork and individual flexibility. Employees are expected to come to the office at least two days per week because working together in person:

  • Fosters a culture of collaboration communication performance and learning
  • Drives innovation and creativity within and between teams
  • Introduces employees to priorities outside of their immediate realm
  • Ensures important interpersonal relationships and connections with one another and our community!

The base salary range for this position is ZAR plus benefits. This range represents the minimum and maximum new hire compensation for this role. The position may also be eligible for incentive plans and additional benefits in accordance with company policy and local regulations. Our salary ranges are determined by role level and location with individual compensation also dependent on factors such as qualifications experience and skills. Final offers will reflect these considerations and may vary accordingly.

#LI-CS1

Belonging at Mimecast

Cybersecurity is a community effort. Thats why were committed to building an inclusive diverse community that celebrates and welcomes everyone unless theyre a cybercriminal of course.

Were proud to be an Equal Opportunity and Affirmative Action Employer and wed encourage you to join us whatever your background. We particularly welcome applicants from traditionally underrepresented groups.

We consider everyone equally: your race age religion sexual orientation gender identity ability marital status nationality or any other protected characteristic wont affect your application.

Due to certain obligations to our customers an offer of employment will be subject to your successful completion of applicable background checks conducted in accordance with local law.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment.


Required Experience:

IC


About Company

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Protect email and collaboration tools with Mimecast. Manage human risk and stay ahead of cyber threats with advanced security solutions.

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