Software Tester (MES & Integration) - Remote

Main Sail is seeking a detail\-oriented and experienced **IT Software Tester** to join a growing QA team within our client's manufacturing enterprise. In this role, you will be responsible for ensuring the quality, reliability, and performance of mission\-critical enterprise applications. The ideal candidate will have a strong background in manufacturing software environments, specifically with **Manufacturing Execution Systems (MES)**. Direct experience with **Solumina** and validating integrations with **SAP** will significantly set you apart. You will collaborate closely with developers, business analysts, and operations teams to design, execute, and automate test cases that keep our production running smoothly. **Responsibilities:*** Test Planning \& Execution: Design, write, and execute comprehensive test plans, test cases, and test scripts based on business requirements and technical specifications. * MES \& Solumina Validation: Validate core MES functionalities, configuration changes, and custom workflows within the Solumina ecosystem to ensure seamless shop\-floor operations. * Integration Testing: Verify and troubleshoot end\-to\-end data flows and interfaces between Solumina MES and SAP ERP (e.g., IDocs, BAPIs, or middleware). * Defect Management: Identify, document, and track software defects to resolution using tools like Jira, Azure DevOps, or similar. * Regression \& Automation: Perform thorough regression testing when bugs are resolved or system updates are deployed. Help identify candidates for automated testing. * Collaboration: Partner with cross\-functional teams to understand user stories, accept criteria, and ensure testing alignment with deployment schedules. **Experience Required:*** Experience: 3 to 5 years of dedicated software testing / QA experience. * Methodologies: Strong understanding of software QA methodologies, tools, and processes. * Technical Skills: Experience with relational databases (SQL queries) for backend data validation. **Additional Preferred (Highly Desirable):*** MES Expertise: Hands\-on experience testing or working with Manufacturing Execution Systems (MES). * Solumina: Direct experience with iBASEt Solumina software validation. * SAP Integration: Experience testing ERP integrations, specifically validating data exchange between MES systems and SAP. **Location:** Remote **Duration:** Jul \- Dec 2026 with likely extensions.