Vertex Tax System Production Support Service Engineer

Job Title: Vertex Tax System Production Support Service Engineer

Location: Hybrid in London (2-3 days)

Employment Type: 6 month FTC

Salary: Competitive

Start Date: Immediate

Industry: Enterprise MSP

We’re partnering with a leading global organisation looking for an experienced Vertex Tax System Production Support Engineer to provide hands-on functional and technical support for Vertex tax management systems and their integration with ERP platforms (including Oracle Fusion).

You’ll play a key role in ensuring accurate indirect tax calculations across multiple jurisdictions, maintaining Vertex configurations, resolving system issues, and supporting compliance and audit processes.

This role suits someone with a solid grounding in indirect taxation (Sales & Use Tax, VAT, GST, Withholding Tax), strong SQL and data troubleshooting skills, and experience managing Vertex–ERP integrations in a production environment.

Vertex Tax Systems Production Support Service Engineer – Key Responsibilities

Functional Support

• Maintain and troubleshoot Vertex tax calculation rules, jurisdictions, and product taxability.
• Ensure accuracy of tax rates, exemptions, and determinations across global regions.
• Manage Vertex–ERP integrations (e.g. Oracle Fusion, internal finance systems).
• Support tax reporting, compliance, and audit preparation.
• Handle tax accruals and reconciliations to ensure GL accuracy.
• Document fixes, create knowledge articles, and support quarterly system updates.

Technical Operations

• Perform SQL/data analysis on ERP and Vertex databases for tax reconciliations.
• Troubleshoot API integrations, data feeds, and calculation discrepancies.
• Maintain Vertex REST/SOAP API integrations and support FBDI/ADFdi data loads.
• Monitor performance and optimize tax data loads and batch processes.

Compliance & Reporting

• Support tax compliance reporting (Sales & Use Tax, VAT/GST, Withholding, 1099/1042).
• Assist with SOX audits, ensuring controls and documentation are maintained.
• Reconcile Vertex vs. ERP tax subledger vs. GL postings.
• Ensure adherence to Vertex regulatory updates and tax rate changes.

Operational Support

• Manage support tickets via MyVertex and liaise with Vertex support teams.
• Coordinate testing for quarterly ERP/Vertex updates.
• Assist finance, tax, and accounting teams with Vertex-related queries.
• Document SOPs and troubleshooting steps for recurring tax issues.

Vertex Tax Systems Production Support Service Engineer – Key Skills Required

• 5+ years of experience supporting Vertex tax systems and ERP integrations.
• Strong understanding of indirect taxation (Sales & Use Tax, VAT, GST, Withholding).
• Hands-on knowledge of tax rules, product taxability, and jurisdiction setup.
• SQL proficiency for data analysis and reconciliation.
• Experience troubleshooting API integrations and Vertex data feeds.
• Understanding of tax reporting and SOX audit requirements.
• Exposure to FBDI/ADFdi for tax-related data management.
• Strong analytical, communication, and problem-solving skills.

Please apply now if this role is of interest.