Our People

Meet Our Expert Team

At Sir Jonathan and Company LLP, our strength lies in the expertise, experience and dedication of our people. We bring together professionals with diverse skills across accounting, auditing, tax, compliance and business advisory services.

People Behind Our Professional Service

Our team works collaboratively to understand our clients' needs and provide practical solutions that create lasting value. Every engagement is approached with professionalism, integrity and a commitment to achieving the best possible outcome for our clients.

We believe that successful organisations and outstanding professional services are driven by capable, motivated and committed people.

Sir Jonathan and Company LLP Team
Our Staff Team

Experience, Integrity & Commitment

At Sir Jonathan and Company LLP, we believe that successful organisations and outstanding professional services are driven by the people they employ.

We pride ourselves on attracting, developing and retaining talented professionals who understand the needs of our clients and the industries in which they operate.

Our people bring a pioneering spirit to their work, with a focus on developing value-adding services, solving problems and continuously improving the way we serve our clients.

Through teamwork and professional development, we aim to maintain a culture where people are encouraged to learn, contribute and exceed client expectations.

Our Leadership Team

Meet the People Leading Our Firm

Our leadership team brings together extensive professional experience, technical expertise and a strong commitment to audit quality, financial management, taxation, risk, compliance and advisory services across Kenya and East Africa.

Jonathan Yego, Managing Partner
01
Managing Partner | Kenya

Jonathan Yego, CPA-K

Jonathan Yego is the Managing Partner of Sir Jonathan and Company LLP, with over 15 years of professional experience in audit, taxation, accounting, financial management, risk management, internal controls and forensic assignments.

He provides strategic and technical leadership across the firm, with particular focus on audit quality, tax advisory and representation, financial reporting, risk and compliance, and complex client assignments across East Africa.

Audit Tax Advisory Risk & Compliance
Credentials

MSc Finance & Accounting
Bachelor of Business Management
Certified Public Accountant of Kenya (CPA-K)
Certified Fraud Examiner (CFE)
Certified Digital Investigator Professional (CDIP)

ICPAK Member No.: 18060
Practising Licence No.: 2516

Daniel Birgen, Senior Partner and Audit Quality Manager
02
Senior Partner & Audit Quality Manager | Tanzania

Daniel Birgen, CPA-K

Daniel Birgen is a Senior Partner with over 23 years of professional experience in audit, assurance and financial reporting.

He provides technical leadership and oversees audit quality, engagement supervision and compliance with professional standards across the firm's assignments.

His extensive experience includes financial reporting, audit quality reviews and evaluation of financial statements, giving him a strong technical foundation in maintaining consistency and quality across audit engagements.

Audit Quality Assurance Financial Reporting
Credentials

Bachelor of Business Management (Accounting)
Certified Public Accountant of Kenya (CPA-K)
ACCA Diploma in International Financial Reporting

ICPAK Member No.: 9851
Practising Licence No.: 2417

Duku Seme, Audit Quality Manager
03
Audit Quality Manager | South Sudan

Duku Seme, CPA-K

Duku Seme is an experienced audit professional with 13 years of experience in accounting and audit. He supports the firm's audit quality function in South Sudan, providing oversight across audit planning, execution, review and reporting.

His professional background combines strong accounting and audit expertise with experience in maintaining audit quality, sound documentation, effective risk assessment and compliance with applicable professional requirements.

Audit Audit Quality Risk Assessment
Credentials

MBA
Bachelor of Business Administration (Accounting)
Certified Public Accountant of Kenya (CPA-K)
Certified Public Accountant of Uganda (CPA-U)

ICPAK Member No.: 29167

Julius Kahure Wangechi, Audit Quality Manager
04
Audit Quality Manager | Kenya

Julius Kahure Wangechi, CPA-K

Julius Kahure Wangechi is an experienced audit professional with 18 years of experience in audit, accounting, financial reporting, expenditure verification and compliance.

He has worked across a range of assignments involving financial audits, project and expenditure reviews and organisational compliance.

He supports audit quality and engagement supervision in Kenya, bringing practical experience in risk-based audit work, financial reporting, internal controls and the review of financial and operational information.

Audit Financial Reporting Compliance
Credentials

Bachelor of Business Management
Diploma in Project Management
Certified Public Accountant of Kenya (CPA-K)
Certified Public Secretary (CPS-K)

ICPAK Member No.: 7781

Mercy Nyawira Kaburu, Tax Manager
05
Tax Manager | East Africa

Mercy Nyawira Kaburu, CPA-K

Mercy Nyawira Kaburu is a Certified Public Accountant with experience in accounting, financial management, audit coordination, payroll, statutory compliance and project financial management.

She supports the firm's tax and financial management assignments across East Africa, bringing practical experience in financial reporting, budgeting, cash-flow management, payroll, statutory reporting and the review of project and grant financial information.

Tax Financial Management Statutory Compliance
Credentials

Bachelor of Commerce
Certified Public Accountant of Kenya (CPA-K)

ICPAK Member No.: 20282

What Defines Our Team

Our professionals share a common commitment to delivering quality work while building trusted, long-term relationships with our clients.

Professional Expertise

Our team combines technical knowledge, professional experience and practical understanding of business environments.

Integrity & Ethics

We uphold high standards of professional conduct, confidentiality, accountability and ethical behaviour in everything we do.

Continuous Improvement

We encourage learning, innovation and continuous improvement so that our services remain relevant and valuable to our clients.

Collaboration

We work as one team, sharing knowledge and combining different perspectives to deliver effective solutions.

Client Focus

We listen to our clients, understand their priorities and tailor our services to their specific requirements.

Regional Perspective

Our team understands the practical challenges faced by organisations operating in Kenya and across the East African region.

How Our Team Works With You

We believe effective professional relationships are built on communication, trust and a clear understanding of the client's objectives.

01. Listen We take time to understand your organisation, challenges and objectives.
02. Assess We examine the relevant financial, operational, tax or compliance issues.
03. Advise We provide practical recommendations based on professional knowledge and evidence.
04. Deliver We work with you to implement solutions and achieve sustainable results.

Connect With Our Team

Our team is available to discuss your professional requirements and how we can support your organisation.

Kenya Office

+254 736 970 397

South Sudan Office

+211 924 973 333
Speak Up With Confidence

Our Commitment to Integrity

We believe that transparency, accountability and ethical conduct are essential to a trustworthy organisation. We encourage employees, clients, suppliers and other stakeholders to raise genuine concerns about suspected fraud, misconduct, unethical behaviour or other serious issues.

  • Confidential reporting channels
  • 24/7 reporting availability
  • Reports handled with appropriate confidentiality
  • Concerns reviewed and investigated appropriately
Report a Concern →

Let's Work Together

Whether you need accounting support, audit and assurance, tax advice, forensic services, compliance assistance or business advisory services, our team is ready to help.

Contact Our Team →