Mid/Senior Domain Architect

Job Title: Mid/Senior Domain Architect
Project Title: Enterprise Architecture & OSS Transformation

Contract: Three months rolling INSIDE IR35

Location: Hybrid (London-centric, commutable)
Working Hours: 8 hours/day; Core availability 10:00-16:00 (London Time)

About the Project

Our client is embarking on a major Enterprise Architecture and OSS Transformation initiative. As part of this strategic evolution, they are assembling a tactical core team to drive architectural outcomes that align technology with business goals. They are seeking experienced Domain Architects to bridge high-level architectural frameworks with hands-on development execution, ensuring successful delivery of mission-critical telecom systems.

Key Responsibilities

• Translate high-level architectural concepts into actionable High-Level Designs (HLDs) and Low-Level Designs (LLDs).
• Collaborate with technical teams on the design and delivery of APIs, microservices, and event-driven architectures.
• Ensure all designs are traceable to business and functional requirements.
• Act as a liaison between system-wide architecture and delivery teams to maintain design integrity.
• Support the transition from Time & Materials (T&M) to outcome-based delivery models.
• Contribute to the creation and evolution of enterprise architecture standards and documentation.

Required Technical Experience

• Cloud & Edge Computing (AWS, OpenStack, Linux, Kubernetes) 3+ years
• OSS/BSS & Integration (API design, microservices) 5+ years
• Agile/SAFe Delivery Frameworks 3+ years

Required Business Experience

• Multi-Vendor Agile Delivery 3+ years
• Stakeholder Coordination 3+ years

Industry Experience

• Telecommunications: 5+ years in a domain or enterprise architecture role within telecom environments.

Soft Skills & Behaviours

• Strong problem-solving and analytical thinking.
• Excellent documentation skills with attention to detail.
• Ability to thrive in cross-functional, collaborative environments.
• Proactive, self-starter attitude with a focus on delivering outcomes.