Tax Tech Engineer - Equity & Tax Integrations with AI

SystemsAccountants Inc.; California; Hybrid; USD 205,000 - 270,000; Full time

Job summary

SystemsAccountants Inc. in San Francisco, New York, or Seattle is seeking a Senior Tax Technology Engineer to design and build integrations that connect tax systems to ERP, billing, CRM, and data warehouses.

You will own tax-related changes in billing and lead the technical delivery of an AP tax engine across ERP-connected purchasing flows, including data migration and go-live validation. The role emphasizes producing SOX-aware data workflows, documentation, and scalable tooling, with

Qualifications

• Hands-on experience building or owning production integrations with billing platforms, ERPs, or enterprise tax and finance systems.
• Proficiency writing production-grade Python with strong testing and code review habits.
• Strong SQL skills for building reconciliations and validating data end to end.
• Experience building or operating SOX-aware data flows, such as IPE, control totals, or documented and testable pipelines.
• Ability to translate business and tax requirements into technical specifications.
• Confidence working directly with vendors, auditors, engineers, and tax stakeholders.
• Strong communication and documentation skills, with the ability to work independently in a fast-moving environment.

Responsibilities

• Design, build, and support integrations between tax systems and ERP, billing and invoicing, CRM, EPM and FP&A, data warehouse, and other business-critical applications.
• Own tax-related changes within the billing environment and the connection between billing and the tax engine, including withholding tax considerations.
• Lead technical delivery of an AP tax engine implementation across ERP-connected purchasing flows, covering data migration, integration pipelines, parallel-run reconciliation, e-invoicing, and go-live validation.
• Build and maintain interfaces using APIs, middleware, integration platforms, and file-based methods.
• Develop tax-specific tooling for indirect tax reconciliations, provision and research credit data pipelines, transfer pricing datasets, withholding tracking, and exemption validation.
• Build SOX-aware controls on tax data flows, including control totals, source-to-target tie-outs, and evidence pipelines that hold up to external audit.
• Troubleshoot data discrepancies, integration errors, and performance issues across systems.
• Serve as technical owner through vendor implementations, from build through post go-live support.
• Maintain clear documentation of system architecture, interfaces, data mappings, and integration processes.
• Help establish best practices for integration architecture, monitoring, testing, and support as new products and jurisdictions come online.

Skills

Python

SQL

Production integrations

SOX controls

Tools

dbt

BigQuery

Job description

SystemsAccountants Inc. in San Francisco, New York, or Seattle is seeking a Senior Tax Technology Engineer to design and build integrations that connect tax systems to ERP, billing, CRM, and data warehouses.

You will own tax-related changes in billing and lead the technical delivery of an AP tax engine across ERP-connected purchasing flows, including data migration and go-live validation. The role emphasizes producing SOX-aware data workflows, documentation, and scalable tooling, with