Our Mission
We exist to help finance teams catch duplicate invoices, ghost employees, shell vendors, and payroll fraud hiding in their accounting ledger — before they become a costly write-off or an audit finding. Modern fraud schemes move fast and hide in the volume of everyday bookkeeping. Our mission is to deliver intelligent, near real-time protection for your books that is proactive, explainable, and built for the complexity of modern accounting data.
We believe fraud detection should be accurate, transparent, and effortless — not noisy, reactive, or slow.
Who We Are
A company built on technical depth and financial governance. Our founders bring together two disciplines that rarely meet: professional-grade engineering and high-integrity financial governance. This combination shapes everything we build — from our detection models to our risk frameworks.
Raj brings more than two decades of experience designing secure, high-availability systems across financial services, payments, and enterprise technology. He has led major engineering initiatives at organisations including Sage Pay, Westpac, Suncorp, and GBST.
- Distributed systems
- Secure payment architectures
- Ledger fraud detection
- Cloud-native, scalable platforms
Raj's background gives the company deep technical strength in building fraud-resilient systems capable of processing high-volume, high-risk environments with precision and speed.
Kavunthy brings over 20 years of experience in financial governance, compliance, and operational risk across Queensland government agencies and multinational organisations. Her career includes senior roles at:
- Electoral Commission of Queensland
- Queensland Shared Services
- Arts Queensland
- Queensland Health
- Nestlé
Her expertise ensures our platform aligns with real-world financial controls, audit requirements, and regulatory expectations — making our detection models not only intelligent but trustworthy.
Our Story
Raj and Kavunthy founded the company after witnessing the same problem from two different angles.
Raj saw how legacy fraud systems struggled to keep up with the volume and complexity of modern accounting ledgers, often reacting too late or drowning finance teams in false positives.
Kavunthy saw how organisations were forced to rely on manual checks, outdated controls, and fragmented data — leaving their books exposed to duplicate invoices, ghost employees, and shell vendors that manual reviews miss.
They realised accounting and bookkeeping practices needed a new approach: a platform that combines rule-based checks, machine learning, and financial-grade governance to catch ledger and payroll fraud early, accurately, and with full explainability.
Their shared vision is a world where fraud detection is not a burden, but a seamless, intelligent layer of protection.
What We Do
Near real-time ledger and payroll fraud detection. Sentinel, our flagship product, automatically monitors your accounting data — journal entries, invoices, bills, payments, and payroll — connected directly to Xero, QuickBooks, and MYOB.
We identify:
- Duplicate invoices and payments
- Ghost employees and terminated-staff payments
- Fake or shell vendors
- Invoice redirection scams
- Payroll diversion
- Unusual journal entries and transaction patterns
Our detection engine is built on:
- Rule-based fraud checks
- Machine learning
- Risk scoring algorithms
- Explainable AI
- Automated alerting & workflows
We focus on precision, speed, and clarity — so organisations can act confidently and reduce risk without drowning in noise.
Our Values
The principles that guide everything we build.
Integrity
We build technology that organisations can trust — grounded in transparency, accuracy, and ethical data use.
Security First
Every design decision prioritises the protection of your financial data, resilience, and secure architecture.
Explainability
Fraud detection should be clear, not mysterious. Every alert comes with context and reasoning.
Innovation
Fraud schemes evolve. So do we. We continuously expand our detection rules to catch new ones.
Partnership
We work closely with organisations to understand their environment, risks, and operational needs.
Why Organisations Choose Us
We help finance teams and accounting practices stay ahead of fraud, reduce operational risk, and protect the integrity of their books.
Our Vision
To become the most trusted intelligence layer for accounting and payroll fraud detection — empowering finance teams and accounting practices with technology that is smarter, faster, and more transparent than anything available today.
Get in Touch
Want to learn more about how Sentinel can protect your books? We'd love to hear from you.