Senior Enterprise Architect

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 a highly experienced and visionary Senior Enterprise Architect to lead the technical strategy and governance for a high-profile, multi-million Pound digital transformation programme in the telecommunications sector. This role is critical to ensure the successful design and delivery of complex, time-sensitive BSS/OSS ecosystems that support business-critical operations for a major telecom client.

The ideal candidate will possess deep knowledge in telecoms architecture, strong technical governance capabilities, and a proven track record in thought leadership across cross-functional and vendor-led delivery environments.

Key Responsibilities:

• Define and lead the enterprise architecture vision, aligning it with business strategy and
• programme objectives.
• Act as the technical authority across the programme, providing architectural direction and technology roadmap evolution.
• Deliver technical thought leadership, driving innovation, standardization, and adoption of best practices across BSS/OSS layers.
• Establish and enforce technical governance frameworks and architecture principles across all programme phases.
• Ensure architecture artefacts, decision logs, and design documentation meet compliance, quality, and audit requirements.
• Facilitate architecture reviews, design assurance, and risk management activities with internal and external stakeholders.
• Lead the design of scalable, modular, and resilient BSS/OSS solutions, integrating with legacy systems and modern platforms.
• Oversee solution architecture workstreams across multiple delivery teams and ensure consistency with target state architecture.
• Translate business and operational requirements into technology designs that are deliverable within programme constraints.
• Document and communicate the technology designs to the delivery teams and provide support in the execution of the delivery of the programme.
• Partner with executives, programme directors, product owners, and delivery teams to align architecture with delivery milestones.
• Engage and influence client stakeholders, third-party vendors, and system integrators to drive architectural consensus.
• Present complex technical solutions in clear, compelling ways to both technical and nontechnical audiences.

Required Experience & Skills:

• Experience in enterprise architecture roles, with recent experience in telecoms sector.
• Proven success in leading architecture for large-scale BSS/OSS transformation programmes.
• Deep understanding of telecom standards, protocols, and technologies (TM Forum frameworks, Open APIs, 5G readiness).
• Strong capability in architecture governance, enterprise frameworks (e.g., TOGAF), and agile or hybrid programme delivery.
• Experience in multi-vendor environments, managing cross-functional architecture inputs, and driving end-to-end integration.
• Exceptional communication, negotiation, and leadership skills.
• Willingness to travel and spend time on site internationally

Desirable:

• Experience with cloud-native architectures (e.g., AWS, Azure), Kubernetes, microservices, and DevSecOps practices.
• Familiarity with data architecture, AI/ML applications in telecom, and enterprise security models.
• Certification in TOGAF, TM Forum, or related architecture frameworks.

Why Join Us?

• Join a high-impact programme at the heart of digital innovation in telecoms.
• Be part of a collaborative team that values technical excellence and strategic thinking.
• Opportunity to shape the future state architecture of a mission-critical system.

What We Offer:

• Opportunity to lead flagship programmes for major telecom players.
• Professional development and career opportunities in an international environment.
• Competitive salary and annual performance-based bonus.
• Additional health insurance.
• Company organised social events.
• Complimentary fruits, pastries and lunches.
• Opportunities for internal and external training.