Hassan Hussain

Noted for steering enterprise-scale testing initiatives, orchestrating multi-million pound system migrations, guiding teams of testers, and delivering zero-defect releases for platforms serving millions of users across retail, banking, and telecommunications sectors. Dynamic senior test lead and analyst adept at leading end to end test execution and sessions with stakeholders, executing test strategies across functional/non-functional/regression/SIT methodologies, and engaging with global vendor teams, including NCR, Worldpay, Boomi, ACI and Microlise. Extensive experience leading business-critical IFS, SAP S/4HANA and enterprise system transformation programmes from legacy systems, coordinating cross-functional and global teams, and ensuring high-quality delivery with strong risk visibility and progress reporting.

Expertise in transforming technical requirements, architecting test frameworks for Salesforce, Dynamics365 and EPOS/POS, CRM systems, validating payment gateways and self-checkout solutions, and ensuring smooth integration across SAP S4 HANA migrations and Windows and Linux platform upgrades. Recognised for chairing defect triage meetings with third-party vendors and translating technical complexities into business-friendly language for non-technical audiences. Expert in JIRA, TestRail, HP ALM, Azure DevOps and Postman, with strong integration, API and cross-application testing capability.

Test Manager (Contract) - Farnell Avnet - Leeds

(2026-02)

Project: ERP Transformation from Legacy BPCS system to SAP S4 HANA (WMS, Logistics, Web, Supply Chain, Procurement, Sales). As an Integration Test Lead on a business-critical large scale SAP S/4HANA migration and implementation, responsible for managing end-to-end test execution across a complex, multi-system landscape across EMEA, NA and AIPAC. Ensured seamless integration between ERP, warehouse, tax, payment, and reporting systems, while driving collaboration across business, technical, and test teams to deliver high-quality outcomes, risk visibility, and on-time programme delivery.

• Led end-to-end integration testing across OTC, P2P, R2R, and returns flows, ensuring full business process coverage.
• Coordinated cross-functional test execution across global teams, managing dependencies between ERP, middleware, warehouse, tax, and payment systems across time zones in USA, Singapore, India and UK.
• Designed and managed daily run plans, ensuring adherence and maximising test coverage and efficiency.
• Facilitated daily stand-ups, driving issue resolution, progress tracking, and team alignment.
• Tested end to end inventory, stock levels manipulation, web and ERP sales.
• Identified and managed test data requirements, including complex scenarios such as returns, tax validation, and intercompany flows.
• Monitored execution and tracked defects in JIRA and Service Now, providing clear prioritisation and actionable insights to stakeholders. Led identification, planning and coordination of test data requirements across SIT, UAT, dress rehearsals and production cutover.
• Coordinated test data refreshes, migration validation and reconciliation across SAP S/4HANA, warehouse, finance and reporting systems. Also, worked with business and technical teams to ensure accurate, compliant test data was available across multiple environments.
• Led business cutover planning, readiness, and go-live activities for large-scale transformation programmes, coordinating data migration, stock runs, freeze periods, downtime windows, business communications, operational readiness, and resource planning. Managed mock cutovers and dress rehearsals, secured business sign-off against go-live criteria, supported command centre and hypercare operations, prioritised issue resolution, and ensured a smooth transition into BAU support through effective kn
• Investigated integration defects across APIs and middleware, working with technical teams to isolate root causes.
• Ensured validation of end-to-end data flows, including financial postings (GL, AR/AP), tax (Vertex), and downstream reporting (ODS/BI).
• Validated migrated master and transactional data, ensuring accuracy, completeness and reconciliation between legacy BPCS and SAP S/4HANA. Supported environment readiness through coordinated data refreshes and validation activities.
• Drove collaboration between business SMEs, developers, and third parties, ensuring efficient defect resolution and smooth test cycles.
• Managed the full defect lifecycle using ServiceNow, logging, triaging, prioritising, assigning and tracking defects through to resolution. Worked closely with business stakeholders, developers and third-party vendors to ensure timely defect resolution and successful retesting. Monitored defect trends, produced defect metrics and dashboards, facilitated defect review meetings, and ensured all issues were resolved and validated prior to business sign-off and production release.

Test Manager / QA (Contract) - NCR Voyix - Bradford

(2025-05 - 2026-02)

Project: Digital Transformation for GCP cloud migration, Self-service migration & Retail Devices. Lead testing on Google Cloud Platform upgrade system for finance, supply chain and sales modules on retail devices for retail giants Morrison's PLC. Executed testing on self-checkout machines during and after migration to the GCP cloud, testing all transaction flows end to end.

Verified all transactions on Morrison's BAU systems in the newly implemented SAP S4 HANA centrally managed system on specified modules. Used JIRA for test script creation and defect management from start to finish. Lead the project on all fronts dealing with stakeholders at all levels, owned the testing strategy across regression, UAT, SIT and go-live phases.

Managed test governance and produced testing documentation test plans daily status reports and end of test reports. Worked closely with vendors. Lead QA resources and allocated tasks daily. Co-ordinated testing activities with business, technical teams and integration partners.

• Managed end-to-end test execution across SAP S/4HANA finance, supply chain and sales modules using Postman API integration
• Created and enforced daily test run plans aligned to programme milestones
• Led daily stand-ups to maximise test execution effectiveness and remove blockers
• Coordinated test execution across business, technical and vendor teams across time zones
• Ensured adherence to execution run plans and test scope controls
• Drove cross-application integration testing across ERP, EPOS, ecommerce and payment platforms, testing of cross-application dependencies and API's
• Monitored execution progress and defect trends and reported risk insights to Test Manager
• Maintained daily execution dashboards and progress reports for programme leadership
• Led defect triage and resolution coordination with vendors and engineering teams
• Directed ERP data migration validation and backend reconciliation using SQL
• Performed hands-on end-to-end execution across retail devices and ERP transaction flows

Test Manager & Test Analyst (Contract) - VoCoVo - Oxford

(2024-01 - 2024-09)

Project: Telecommunications/Telephony Upgrade. Headed all facets of network telephony testing, leading rigorous evaluation of telecommunications devices, including firmware updates on headsets and base stations through bespoke tools with DHCP/Static IP configurations. Administered test management through Azure DevOps and TestRail, tracking defects, generating test plans, developing strategies, creating scripts, and producing detailed execution reports for stakeholder alignment and well-informed decision-making. Ensured integrated quality control from specification to deployment by collaborating with hardware and software vendors Mindera and RTX throughout development cycle.

Pioneered

VoIP/VoWiFi testing across LAN/WAN/DNS environments, developing and testing SIP protocols that enabled conferencing functionality.