Senior Programme Manager – Telecoms BSS/OSS Delivery

Cerillion is a leading provider of billing, charging and customer management systems with more than 25 years’ experience delivering its solutions across the telecoms sector.

We are seeking an exceptional and experienced Senior Programme Manager to take the lead on a large-scale, multi-million-pound transformation programme within the telecoms domain. This high-profile role demands an individual with proven experience delivering complex, time-sensitive BSS (Business Support Systems) and OSS (Operations Support Systems) solutions for major telecoms providers.

You will own the programme end-to-end—from strategy to execution—ensuring seamless coordination between internal teams, technology partners, system integrators and client stakeholders. Your work will directly influence the success of business-critical deployments, customer experience, and long-term value delivery.

Key Responsibilities

• Lead the initiation, planning, execution, and governance of a complex, multi-million-pound BSS/OSS transformation programme.
• Serve as the primary interface for senior client stakeholders, executive sponsors, vendors, and cross-functional delivery teams.
• Drive delivery of high-performance, integrated BSS/OSS platforms covering product catalogue, CRM, revenue management, order management, service fulfilment, assurance, and network operations.
• Establish programme roadmaps, milestone planning, resource forecasting, and risk management strategies in alignment with business goals and technical dependencies.
• Chair programme steering committees, provide executive-level reporting, and maintain rigorous control over scope, budget, and quality.
• Build and inspire high-performing teams, fostering a delivery culture grounded in agility, accountability, and results in a supportive environment.
• Uphold delivery excellence through effective controls, KPIs, and continuous improvement in line with telecoms and ITIL best practices.
• Willing to travel and spend time onsite internationally

Required Experience & Skills

• Proven programme management expertise with recent experience in telecommunications, delivering high-value BSS/OSS transformation programmes.
• BSS/OSS Domain Knowledge: Deep understanding of telecoms architectures including product catalogue, CRM, billing, mediation, provisioning, inventory, and service assurance.
• Technical Acumen: Ability to liaise with solution architects, software developers, and system integrators to ensure robust and scalable system design.
• Time-Critical Project Leadership: Demonstrated success in managing time-sensitive rollouts with interdependencies across systems, regions, and vendors.
• Stakeholder Engagement: Adept at building trust and credibility, and influencing senior-level stakeholders (CxO level) and managing customer expectations in high-pressure environments.
• Delivery Methodologies: Strong knowledge of Agile, SAFe, and traditional Waterfall project delivery models. Certification in PMP, MSP, or Prince2 preferred.
• Commercial Awareness: Skilled in managing commercial contracts, vendor negotiations, and financial oversight of multi-million-pound budgets.
• Preferred
• Degree in Telecommunications, Computer Science, Engineering, or related discipline.
• Professional certifications: PMP, MSP, SAFe, ITIL.
• Experience working with Tier-1 telecom operators or major telecoms vendors.

What we provide:

• Opportunity to lead flagship programmes for major telecom players
• Dynamic, innovative, and collaborative work environment
• Competitive salary and performance-based bonus
• 23 days annual leave (+ bank holidays), increasing to 28 days after 5 years’ service.
• Vitality healthcare cover.
• Cycle-to-work scheme.
• Hybrid working.
• Opportunities for internal and external training.
• Employee Assistance Program.
• Opportunities for travel.
• An office in the heart of Covent Garden, providing an excellent base for our team events and social functions.