Position: Data Integration Engineer (ETL) Location: Greater London Tax International Services Kft , operating under the trade name Tax Desk , is dedicated to becoming the world’s premier platform for regulatory compliance.We are a technology-driven company offering businesses an innovative online solution for managing indirect tax obligations across 60 countries. Our platform seamlessly integrates VAT registrations, tax calculations, filings, notifications, centralized document storage, and payments. Additionally, clients benefit from the expertise of our experienced, multilingual team of tax professionals.We are seeking a Data Integration Engineer to design and build an end-to-end ETL platform that ingests client transactional data and transforms it into VAT-ready output using business-configurable transformation rules . We would expect the individual to use off-the-shelf tooling as much as possible.The role covers the full ETL lifecycle — building connectors, applying transformations, and producing validated output — with a strong focus on enabling non-technical users (e.g. VAT specialists, operations teams) to configure, maintain, and evolve data transformation rules without code changes .You will design the technical foundations that allow business users to safely express transformation logic, while ensuring correctness, auditability, and regulatory compliance.Key Responsibilities Extraction & ConnectorsDesign and maintain connectors to ingest data from client systems, including:Accounting, ERP, billing, and e-commerce platformsFile-based feeds (CSV, XML, JSON) via SFTP or secure uploadsIntegrate using APIs, webhooks, and scheduled file transfersSupport incremental loads, historical reprocessing, and correctionsHandle source-system variability, authentication, rate limits, and failuresDesign and implement a configuration-driven transformation engine that maps client input data to internal canonical data modelsDefine a business-readable rule model for transformations such as:Field mapping and renamingVAT-relevant classification and enrichmentAggregation, splitting, and restructuring of transactional dataBuild guardrails that prevent invalid or unsafe configurationsSupport versioning, activation dates, and rollback of transformation rulesEnable rule changes without redeploying codeBusiness Enablement & ToolingWork with product and domain teams to design UIs, schemas, or configuration formats that business users can safely manageEnsure transformation rules are transparent, explainable, and testable by non-engineersSupport sandboxing, previews, or test runs of rule changes before production useLoading, Validation & AuditabilityLoad transformed data into downstream systems used for VAT calculation and reportingImplement validation, reconciliation, and consistency checks at each ETL stageEnsure full traceability from output records to:Applied transformation rulesRule versions and effective datesSupport audits, corrections, and historical reprocessingCollaborate closely with VAT specialists to translate tax logic into configurable data rulesPartner with product, operations, and client-facing teams during onboarding and ongoing changesContribute to data model evolution as new jurisdictions, products, and edge cases are introducedImprove performance, scalability, and maintainability of the ETL platformRequired Experience and SkillsProven experience building end-to-end ETL systems in productionExperience designing configuration-driven or rules-based data transformation enginesStrong understanding of structured transactional dataExcellent SQL skills and experience with relational data modelsExperience integrating with third-party systems via APIs and file-based interfacesAbility to design abstractions that balance business flexibility with technical safetyStrong focus on data quality, edge cases, and auditabilityExperience building internal tools for non-technical usersExposure to financial, accounting, invoicing, or tax dataExperience with rules engines, decision tables, or DSLsFamiliarity with cloud application environments (e.g. AWS)Experience working in regulated or compliance-driven domainsUnderstanding of VAT or tax reporting concepts (advantageous, not required)What we offerOwnership of a core ETL and transformation rules platformThe opportunity to enable business teams to directly control data logic safelyHigh-impact work at the intersection of engineering, product, and tax expertiseA growing international SaaS environment with deep technical and domain challengesCompetitive salary and benefits, with scope to grow as the company scalesThe opportunity to join an exciting and rapidly growing fintech company with a global footprint.A competitive salary and a comprehensive benefits package.Professional growth and development opportunities in an international setting.A collaborative and innovative work environment.Join Tax Desk and play a crucial role in shaping the future of regulatory compliance!#J-18808-Ljbffr
