Bookkeeper / Accounts Assistant Job

Accounting Jobs . Optimise Outsourcing Jobs

Working Hours: Monday–Friday,
Type: Full-Time,

Introduction to the Role

Optimise Outsourcing is recruiting an experienced and detail-driven Bookkeeper / Accounts Assistant to support a growing international Managed Services Provider (MSP) delivering technology and IT services to business clients.
This is a key role within the finance function, with primary responsibility for ensuring that client invoices are accurate, complete, and issued on time.
The business operates as a small, collaborative team. This means the role offers genuine visibility into how the organisation operates and the opportunity to make a meaningful impact over time.

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Role Overview

• This role carries direct responsibility for:
• Preparing and issuing monthly client invoices
• Ensuring billing aligns with agreed services, usage, and pricing
• Investigating and resolving invoicing discrepancies
• Supporting day-to-day bookkeeping tasks
• You will work with information drawn from multiple systems and sources, requiring a structured, methodical approach to ensure accuracy.
• You will also work to monthly billing deadlines where accuracy and timeliness directly impact client experience and cash flow.

About the Client

• Our client operates within the managed services / technology services sector, delivering ongoing IT and operational support solutions to business clients.

Key characteristics of the environment:

• Service-based, recurring monthly billing
• Usage and service data feeding into invoices
• Multiple operational systems supporting service delivery
• A structured but agile team environment
• Emphasis on accountability and careful, methodical work
• The business uses QuickBooks for accounting, alongside service management and documentation systems that support operational data and billing accuracy.
• Familiarity with MSPs or similar service-based environments is helpful, but not essential. A learning curve is expected, and structured support will be provided to understand how the systems connect and how the business operates.
• For GDPR and confidentiality reasons, the client’s identity will be disclosed at the interview stage.

About Optimise Outsourcing

• Optimise Outsourcing is a UK-registered Employer of Record (EOR) and recruitment partner with a strong operational base in Nairobi. We connect high-performing Kenyan professionals with established international businesses and provide:
• Full HR and operational support
• Structured onboarding and training
• Performance coaching and development
• A professional, office-based working environment
• Joining Optimise means joining a company committed to long-term career growth and operational excellence.

Key Responsibilities

Client Invoicing & Revenue Accuracy

• Prepare and issue accurate monthly client invoices.
• Validate service data and pricing before invoices are released.
• Take ownership of invoice accuracy.
• Investigate and resolve discrepancies independently.
• Respond professionally to billing-related queries.

Bookkeeping & Finance Support

• Process purchase invoices.
• Perform reconciliations (bank and account level).
• Maintain accurate ledgers and financial records.
• Assist with basic reporting and month-end activities.

Systems & Process Understanding

• Work across accounting and operational systems in a structured way.
• Understand how service delivery data feeds into financial billing.
• Contribute ideas to improve finance and operational processes over time.

Essentials

• Minimum 3 years’ experience in a bookkeeping, accounts assistant, or similar finance role.
• Direct responsibility for preparing and issuing client invoices.
• Hands-on experience using at least one accounting system (QuickBooks, Xero, Sage, or similar).
• Strong attention to detail and careful, structured approach to work.
• Confidence working with numbers and financial data.
• Clear, professional written and verbal English communication skills.
• Comfortable working collaboratively with remote colleagues.
• Proactive mindset and willingness to take ownership of work.

Desirable (Not Essential)

• Experience working in a service-based, subscription, or recurring billing environment.
• Experience within technology, managed services, telecoms, or professional services.
• Experience working with integrated systems where operational data feeds into finance.
• Intermediate Excel capability for data validation and reconciliations.

Working Environment & Equipment

• Office-based role in Nairobi.
• All equipment provided, including:
• Computer and monitors
• Headset and telephony systems
• Secure access to required systems
• Candidates are not required to provide their own equipment.

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How to Apply

To be considered for this role, applicants must complete ALL the following:
Step 1 — Complete the mandatory assessment
Step 2 — Upload your CV and cover letter via the assessment portal
Step 3 — Submit your application for review

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