Sr. SQL Developer | W2 Only | On-site | at Xlysi

Summary:We re seeking a hands-on Senior SQL Developer with deep T SQL expertise and the ability to read and write MS Access 2003/VBA. You ll reverse engineer and stabilize the legacy application design and build modern SQL centric data flows and implement integrations that connect the current Access front end (on prem) SQL Server back-end ERP with the modern Infor system. The near-term focus is delivering the first integration followed by a broader modernization program.Duties:Reverse engineer read and author MS Access 2003/VBA code; Untangle 100k lines of legacy logic to document workflows and stabilize critical functionsDesign and implement SQL Server schemas (approx. 500 fields with 100 Q and A fields flowing into system) to support modernized processingBuild robust ETL/data ingestion pipelines (e.g. parsing output files and loading into SQL DB for downstream processing); Automate validation and reconciliationIntegrate with Infor: design interfaces/APIs/bridge tables and orchestrations to pass configuration/estimator data between Access/SQL and the Infor ecosystemMaintain on prem performance and reliability: indexing query tuning statistics management isolation levels and transactional integrityEstablish coding standards version control and technical documentation for legacy and modern components; Implement unit/integration test harnessesPartner with business (estimators dealers) to map legacy rules to modern data structures; Convert tribal knowledge into testable specificationsPrepare for the S4 migration (start-to-finish planning) by isolating dependencies defining cutover strategies and drafting rollback/safety netsDrive secure handling of ERP data (authentication role-based access auditing) and plan for multi-year on prem operation before any cloud moveHRXlysi LLC Expert Portal Solutions251 Milwaukee Ave Buffalo grove IL 60089Web : E-mail: Our training portal registration: Experience:Senior IC Key Skills Databases,SQL Server Management Studio,SQL,.NET,Microsoft SQL Server,ssrs,TFS,Database Design,Performance Tuning,SSIS,T Sql,Data Warehouse Employment Type : Full-Time Experience: years Vacancy: 1