Tim Claessen

Data Analytics · BI · Data Strategy
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Profile

Data and analytics leader with 9+ years designing and delivering analytics, reporting and data platform solutions for Australia's largest mining and resources clients. I work end to end, from data pipelines and modelling through to reporting, governance and the operating models that keep analytics capability sustainable. My foundation spans Power BI, SQL, Python and modern platforms including Snowflake, Azure SQL and Microsoft Fabric. I currently lead EY's national Risk Analytics practice across Oceania, with concurrent product work on a Snowflake Native App.

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Experience

Experience
Mar 2022 Present
Perth

Director · EY, Risk Analytics

I lead EY's national Risk Analytics practice across Oceania, grown from 3 to 16, owning practice strategy, commercial performance, capability and the delivery of our largest analytics, payroll compliance and continuous controls engagements in the mining and resources sector.

  • Built Power BI reporting and payroll monitoring solutions for Tier 1 mining clients, giving leaders ongoing compliance visibility across the hire to retire process.
  • Developed payroll monitoring backed by SAP ECP, SuccessFactors and Pronto, integrated through Snowflake, improving how workforce compliance risks are surfaced and managed.
  • Led 20+ superannuation compliance reviews, identifying material exposure and guiding remediation alongside the ATO and Fair Work Commission.
  • Implemented continuous controls monitoring across payroll, master data, leave and rostering, strengthening data integrity and audit readiness.
  • Established digital analytics capability for a global internal audit program spanning 100+ countries and 50+ audits a year, setting strategy, standardising methods and deploying scalable tooling.
  • Designed and delivered analytics on Azure SQL with Power BI, embedding data governance and validated findings processes.
  • Built a modular risk and controls analytics platform on Azure SQL using a layered ref / active / archive design, reusable across multiple client engagements.
  • Designed reusable data models and ETL pipelines integrating SAP, Snowflake and Power BI, cutting per engagement build effort and improving data quality.
  • Grew the Oceania practice from 3 to 16; designed the operating model, built a structured training program and led the AI adoption and responsible use program.
Key clients South32 · Fortescue · Rio Tinto · Northern Star · Chevron · Worley · Ampol
Jun 2025 Present
Concurrent with EY

Senior Account Executive · Unified Honey

Founding contributor to a Snowflake Native App in the Snowflake Startup Accelerator, focused on governed, agent ready data products that bridge ERP systems with modern data platforms. I work across product strategy, go to market and data governance framework design.

  • Lead go to market strategy, product positioning, sales collateral and competitive analysis for a Snowflake Native App targeting mining sector data governance.
  • Contribute to data governance framework design including lineage, quality rules and semantic definitions for agent ready data products.
  • Bridge ERP systems (SAP, Pronto, Oracle) with modern data platforms, drawing on mining industry domain expertise.
Feb 2020 Mar 2022
Perth

Manager · EY, People Advisory Services

Led the Perth data analytics and automation team within People Advisory, delivering payroll, remuneration, superannuation and employment tax analytics for major Australian clients.

  • Managed a 5 year workforce analytics partnership with a major healthcare provider covering rostering compliance, overtime, leave and superannuation.
  • Built analytics on SAP HCM, SuccessFactors, Kronos and RITEQ, analysing workforce patterns including turnover, churn and rostering efficiency.
  • Delivered payroll compliance reviews across ASX listed clients, engaging stakeholders across HR, Payroll, Legal, Tax and Finance.
Jul 2019 Feb 2020
Perth

Senior Consultant · Mindfields

Specialist consulting in process improvement, governance and intelligent automation for large enterprise clients.

  • Managed a large scale UiPath RPA implementation for a major WA mining company, delivering 6 automated processes across Finance, HR, Safety and Tax.
  • Led end to end delivery: process assessment, business case development, solution architecture, UAT and post production validation.
Jan 2017 Jun 2019
Perth

Consultant · EY, People Advisory Services

Data analytics and process improvement across payroll, workforce planning and HR compliance for ASX listed clients.

  • Delivered hire to retire process reviews and workforce analytics, identifying compliance gaps and remediation opportunities across multiple ASX listed clients.
EarlierResearch Assistant, Curtin University (2015 to 2016) · Sports Coach, Wesley and Penrhos (2014 to 2016)
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Selected projects

Selected projects
South32P001
Payroll and workforce compliance partnership

A multi year analytics partnership covering EBA compliance, leave accruals and payments, public holidays, superannuation, payroll tax and wage code configuration. Identified and helped remediate compliance exposures across multiple award and EBA scenarios.

SAP HCMSuccessFactors
FortescueP003
Payroll continuous controls monitoring

Designed and delivered a payroll CCM solution integrating SAP ECP and SuccessFactors, surfaced through SAP Analytics Cloud and Power BI, giving ongoing assurance over payroll accuracy and compliance.

SAP ECPSuccessFactorsSAP Analytics CloudPower BI
Northern StarP006
Payroll monitoring on Snowflake

An end to end payroll monitoring solution with a Snowflake back end and Power BI front end, integrating SAP ECP, SuccessFactors and Pronto. Established repeatable monitoring across heterogeneous source systems.

SnowflakePower BISAP ECPSuccessFactorsPronto
WorleyP011
Global internal audit digital capability

Led digital capability for a global internal audit program spanning 100+ countries and 50+ audits a year. Set the digital strategy, deployed analytics tooling and lifted maturity from a low base.

Power BISQLMultiple analytics platforms
WorleyP012
Enterprise data quality and governance review

Led the largest data quality, governance and validation review undertaken at Worley, covering enterprise scale assessment, governance framework design and validation across global operations.

Data governanceData qualityValidation frameworks
Healthcare providerP015
Five year workforce analytics partnership

A sustained workforce analytics partnership covering rostering compliance, late rostering changes, overtime, superannuation and breaks rostering for a major Australian healthcare provider.

SAP HCMSuccessFactorsKronos
EYP027
Modular risk and controls analytics platform

Designed a modular analytics platform on Azure SQL using a layered ref / active / archive architecture and a run based snapshot model, with a Power BI front end. Reusable across clients, reducing per engagement build effort.

Azure SQLPower BI
EYP030
National Risk Analytics practice build out

Grew the Oceania Risk Analytics practice from 3 to 16 across multiple cities. Designed the operating model, built a structured training program and led the AI adoption and responsible use program.

Operating modelCapability upliftAI adoption
Unified HoneyP031
Snowflake Native App

A Snowflake Native App in the Snowflake Startup Accelerator. Led go to market strategy and contributed to data governance framework design covering lineage, quality rules and semantic definitions for governed, agent ready data products.

SnowflakeData governanceNative Apps
20+ organisationsP026
Superannuation compliance reviews

Led superannuation compliance reviews across 20+ organisations covering SG Act compliance and contractual obligations under EBAs and individual agreements. Identified material underpayment exposures.

SAPMultiple payroll systems
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Capabilities

Capabilities
Data Technical
Power BIExpert
SAP Analytics CloudProficient
Advanced ExcelExpert
SQLExpert
PythonProficient
ETL & pipeline designExpert
Dimensional modellingExpert
Entity-relationship modellingExpert
Medallion / lakehouseProficient
SnowflakeExpert
Azure SQLExpert
Microsoft FabricFamiliar
DatabricksFamiliar
Data governance frameworksExpert
Data quality & validationExpert
Data lineage & cataloguingProficient
Data privacy & protectionProficient
Risk
Continuous controls monitoringExpert
Internal audit analyticsExpert
Risk & controls ontologyProficient
Dynamic risk assessmentProficient
Systems
SAP SuccessFactorsExpert
SAP ECPExpert
SAP HCMExpert
KronosExpert
RITEQProficient
ProntoProficient
Domain Expertise
Payroll compliance analyticsExpert
Superannuation complianceExpert
EBA & award interpretationExpert
Rostering analyticsExpert
FIFO & remote workforceExpert
Workforce planningExpert
Solutions & Automation
UiPathExpert
Power AutomateProficient
Power AppsProficient
AI integration in analyticsProficient
Responsible AI frameworksProficient
Copilot StudioFamiliar
Python widgets & toolingProficient
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Education