ONISIS Consulting

ONISIS Consulting is a boutique financial-management advisory firm partnering with dynamic small and medium-sized enterprises (€3M–€50M turnover) to uncover where money is lost, where capital is trapped, and which decisions to make first.

Founded by Konstantinos Kormentzas, a former banking C-level executive (CRO/Auditor/COO) with 20+ years of institutional banking experience, ONISIS acts as an objective, un-fogged "second brain" for business owners. We combine executive-level banking discipline with practical, frontline execution—replacing 100-page theoretical reports with clear, empirical numbers.

Our Core Practice Areas:

• Fractional CFO Advisory: Senior-level financial governance, capital structuring, and board-level strategic sparring without the overhead of a permanent C-suite hire.
• Cash Flow & Working Capital Optimization: Forensic analysis of receivables, credit policies, and inventory to release trapped liquidity and self-fund expansion.
• Profitability Enhancement: Granular customer- and SKU-level margin analysis to stop profit leakage from unmeasured discounts and legacy terms.
• Business Intelligence (Power BI): Custom executive reporting architectures that establish a Single Source of Truth (SSOT) across operations for five-minute decisions.
• Strategic Financial Planning & Financing: Bank-grade business plans, multi-year financial modeling, and debt advisory to negotiate with lenders from strength.

Headquartered in Athens, Greece (Michalakopoulou 35).
Website: https://onisisconsulting.gr