Solution Architect

Job Title: Solution Architect
Location: Hybrid (1 day per week on site from any of the 70 UK offices)
Salary/Rate: Up to £850 per day
Start Date: March 2026
Job Type: 4 month contract (Inside IR35)

CANDIDATES MUST HOLD ACTIVE SC CLEARANCE OR BE SC CLEARANCE ELIGIBLE

Company Introduction:
We are currently recruiting for a Solution Architect with experience in working in telecommunications operators and delivering technical solutions in enterprise or service provider environments.

Job Responsibilities/Objectives:
Our client seeks a hands-on detailed delivery architect responsible for leading the design, assurance, and implementation of secure, scalable, and high-performance network and IT solutions-particularly within telecommunications environments. The architect will review approve and sign-off of all project lifecycle technical documents, perform project technical assurance, technical integrity, compliance, and value for money across the full project lifecycle, supporting both internal and customer-facing services.

• Lead the creation, development, and maintenance of architectural documentation, including High-Level Designs (HLDs), Low-Level Designs (LLDs), interface specifications, and sub-system specifications throughout project lifecycles.
• Provide technical assurance, governance, and value for money assessments for new, existing, and decommissioned telecom and IT services.
• Collaborate with cross-functional teams (technical SMEs, project managers, business analysts, security/compliance, testers, suppliers, and third parties) to define requirements and deliver integrated solutions.
• Act as the primary technical point of contact with telecom operators and internal/external stakeholders, facilitating effective communication and collaboration.
• Ensure solutions comply with industry standards, regulatory requirements, legal frameworks (e.g., IPA 2016, GDPR), and security/compliance standards (e.g., ISO 27001, NIST, TSA).
• Provide technical leadership in solution integration, design reviews, documentation, and testing.
• Support operational teams with troubleshooting, performance optimisation, and knowledge sharing.
• Manage technical risks, issues, assumptions, dependencies, and all types of change throughout project lifecycles.
• Proactively identify and resolve delivery project issues (technical and non-technical).
• Contribute to continuous improvement and organisational knowledge sharing.

Required Skills/Experience

The ideal candidate will have the following:

5-10 years' experience working with telecommunications operators and delivering technical solutions in enterprise or service provider environments.

Minimum 5 years' experience in:

• Writing and managing HLD/LLD documents for complex end-to-end IT and Telco solutions.
• Designing and integrating IT solutions (e.g., data repositories, middleware, workflow, CRM) with Telco networks and supporting technologies (OSS, BSS, IMS, NAT, CGNAT, IPv4/IPv6).
• Defining interface specifications (protocols, messages, formats).
• Leading teams and collaborating with multiple suppliers/third parties in a 'one-team' approach.
• Report writing and documentation.
• Strong analytical, verbal, and written communication skills.
• Proven experience in software engineering and understanding of software development principles.
• Experience with cloud technologies and platforms (AWS, Azure, Google Cloud), including hybrid and private data centres.
• Experience with Big Data solutions, data governance, and data protection strategies.
• Familiarity with CI/CD pipelines and tools (Kubernetes, Docker, GitOps, Prometheus, Grafana, ELK Stack, Datadog).
• Understanding of IP networking and address translation solutions (e.g., CGNAT).
• Experience working in highly regulated industries (telecoms, government) and delivering secure solutions.
• Ability to ensure full compliance with legal, technical, and policy processes, including audit requirements.

If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.

Disclaimer

Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.

Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.