Bookkeeping Automation
Support for collecting missing documents, investigating transactions, and automating routine bookkeeping checks.
Automation and Process Improvement Consultant
Based in Perth, Western Australia, Avi helps businesses reduce manual work, connect their software, and improve their business processes.
Book a free one-hour consultation
Avi has spent the last decade building software, automations, and business systems for Australia's mining and resources industry. He helped build software products, including platforms and automations, used by BHP, Woodside, Rio Tinto, and Minerva.
Over the years, Avi has led engineering teams and driven products from start to finish. His experience also includes teaching software engineering and cybersecurity to more than 100 students at the University of Western Australia and the University of Adelaide bootcamps.

Avi started Finsant in the latter half of 2026 to help small and medium businesses improve their processes, mostly around finance workflows.
Recent work includes bookkeeping review assistants, automations for chasing documents, and invoice investigations. He also helps with marketing automation and integrations between email, CRMs, and other business software.
If there’s a problem with your business systems that you need help with, we can talk it through together. Even if you don’t have a problem in mind, I’d be happy to catch up and learn about your business.
Kind Regards,
Avi Santoso
Managing Director, Finsant
Help with document collection, reviews, approvals, and reconciliations across your finance workflows.
Support for collecting missing documents, investigating transactions, and automating routine bookkeeping checks.
Support for tracking outstanding work, reconciling accounts, and preparing month-end reports.
Support for checking payroll changes, managing approvals, and reconciling payroll payments.
Support for organising incoming invoices, managing approvals, and checking supplier payments.
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