Assistant Manager - Business Modelling

Iris Software; Johannesburg; On-site; ZAR 500 000 - 750 000; Full time

Job summary

A leading professional services firm in Johannesburg is seeking a Financial Modeller to design and develop robust Excel-based business planning and forecasting models. Candidates should have at least 3 years of relevant experience and strong financial modelling skills. This role offers a competitive compensation package with opportunities for career development and skill enhancement in a collaborative environment.

Benefits

Competitive compensation package

Support and feedback from recognized leaders

Opportunities to develop new skills

Qualifications

• Minimum of 3 years’ relevant work experience in financial modelling, business planning, or related advisory roles.

Responsibilities

• Build and review complex financial models for valuation, forecasting, and scenario analysis.
• Deliver accurate, high-quality outputs aligned with professional standards.
• Communicate effectively within the team and contribute to client deliverables.
• Support risk management processes and maintain strong attention to detail.
• Demonstrate curiosity and a growth mindset.

Skills

Advanced Excel proficiency

Strong financial modelling skills

Analytical mindset

Collaboration

Education

CA(SA)

CFA Level 1

FMVA certification or similar

Job description

At EY, you’ll have the chance to build a career as unique as you are, supported by global scale, cutting‑edge technology, and market leading transactions Shaping the Future with Confidence.

The opportunity

• Model Builds: Design and develop robust Excel‑based business planning and forecasting models.
• Model Reviews: Provide assurance and insights on complex financial models for transactions, project finance, and strategic evaluations.
• Collaborative Projects: Partner with cross‑functional teams on high‑impact deals and strategic initiatives.

Your key responsibilities

• Build and review complex financial models for valuation, forecasting, and scenario analysis.
• Deliver accurate, high‑quality outputs aligned with EY’s professional standards.
• Communicate effectively within the team and contribute to client deliverables.
• Support risk management processes and maintain strong attention to detail.
• Demonstrate curiosity and a growth mindset, challenging assumptions and improving processes.

Skills and attributes for success

• Technical Expertise: Advanced Excel proficiency and strong financial modelling skills.
• Analytical Mindset: Ability to interpret complex data and provide actionable insights.
• Collaboration: Work effectively in a team environment with limited client interaction.
• Professional Qualifications: CA(SA), CFA Level 1 or FMVA certification, or similar, are all advantageous.
• Experience: Minimum of 3 years’ relevant work experience in financial modelling, business planning, or related advisory roles.

What we look for

We are looking for candidates who are highly motivated, analytical, logical thinkers with a passion for business modelling and analytics, with very strong attention to detail. Being a strong team player is critical with the ability to adapt to changing requirements or deadlines in support of our clients’ goals. Also, being highly motivated and self‑aware to work autonomously where required.

What we offer

At EY, our Total Rewards package supports our commitment to creating a leading people culture - built on high-performance teaming - where everyone can achieve their potential and shape the future with confidence making an impact for our people, our clients and our communities. It's one of the many reasons we repeatedly win awards for being a great place to work.

We offer a competitive compensation package where you’ll be rewarded based on your performance and recognized for the value you bring to our business. In addition, our Total Rewards package allows you decide which benefits are right for you and which ones help you create a solid foundation for your future.

Plus, we offer:

• Support, coaching and feedback from some of the most recognized and engaging leaders in the profession;
• Opportunities to develop new skills and progress your career;
• The freedom and flexibility to handle your role in a way that’s right for you.

If you can demonstrate that you meet the criteria above, please contact us as soon as possible.

The exceptional EY experience. It’s yours to build.