BSS / OSS Assurance Lead | LA International | Stratford or Hursley, UK in Hampshire

Position Summary: LA International is actively seeking an experienced, high-caliber, and technical BSS / OSS Assurance Lead (Test Manager / Assurance Specialist) with a strong background in OSS/BSS environments and successful delivery for telecoms clients to join our service team supporting a multi-billion pound government programme on an initial 6-month contract basis with potential long-term extensions in Stratford or Hursley, UK (Hybrid model: 3 days per week onsite). In this critical leadership role, you will sit within the Integrated Assurance function and take full operational ownership of leading assurance activities across OSS/BSS-related deliverables, suppliers, and end-to-end programme outcomes. You will leverage your deep specialist expertise in testing, validation, service acceptance, and multi-supplier governance to deliver uncompromised system readiness, compliance, and operational excellence. This opportunity offers competitive Inside IR35 daily rates of up to £500 per day, executive technical visibility, and exceptional career growth prospects within a premier global IT recruitment and digital consulting enterprise. Detailed Job Description: As a BSS / OSS Assurance Lead supporting LA International in Stratford or Hursley, UK, you will take full operational, tactical, and technical ownership of specialist oversight for supplier assurance, OSS/BSS solution readiness validation, integrated assurance planning, and end-to-end programme milestone execution. Your day-to-day responsibilities include leading assurance, testing, validation, and service acceptance activities across multiple suppliers, assessing risks, identifying assurance gaps, and providing actionable recommendations to programme leadership, coordinating stakeholder engagement across complex delivery environments, ensuring adherence to end-to-end integration, BSS, OSS, and associated business processes, managing supplier governance and reporting frameworks, supporting live service transition activities, and operating under a hybrid working model requiring 3 days per week onsite. Given the nature of the engagement, active UK Security Check (SC) clearance is preferred, though eligible candidates willing to undergo SC clearance vetting are warmly welcomed. You will utilize your proactive troubleshooting and analytical problem-solving skills to resolve complex assurance and integration bottlenecks under strict government programme schedules. Furthermore, you will manage application requirements by sending your updated CV via direct email to Harry Bradbury at , ensuring strict compliance with the Inside IR35 contract terms, hybrid onsite requirements, and SC clearance standards. Key Responsibilities: Lead comprehensive assurance activities across OSS/BSS-related deliverables, suppliers, and end-to-end programme outcomes within the Integrated Assurance function. Direct testing, validation, verification, and service acceptance activities across multiple complex technology suppliers. Assess programmatic and technical risks, identify assurance gaps, and formulate strategic recommendations for programme leadership. Manage supplier assurance activities, stakeholder engagement, and governance reviews across multi-supplier delivery environments. Ensure robust adherence to end-to-end integration, BSS, OSS, and associated telecommunications business processes. Provide specialist oversight of supplier readiness, integrated assurance planning, and milestone execution. Drive strong reporting, governance, and assurance planning across high-visibility government transformation initiatives. Support live service transition, mobile services provisioning, billing, inventory, and service management workflows. Required Qualifications