Enterprise Architect

Dear Partner

Hope this email finds you well.

Please find attached the job description for 4 urgent roles. I need your help in sourcing sub-contractors for these roles based in London.

Kindly help on priority. Please keep these profiles preferably within IR35.

Job Description: Enterprise Architect On Prem to AWS Migration with 18 yrs of experience

Role Overview

We are seeking a highly experienced Enterprise Architect to lead and govern large scale on premises to AWS migration programs. The ideal candidate will drive end to end architecture ensure enterprise tools and platforms integrate seamlessly into the target AWS environment and provide strong oversight on risk mitigation cost optimization delivery timelines and technical quality. This is a strategic role requiring deep technical expertise leadership and the ability to collaborate across engineering security compliance infrastructure and business teams.

Key Responsibilities

1. Cloud Migration Strategy & Architecture

• Define the overall cloud migration blueprint including landing zone architecture application migration patterns (rehost replatform refactor) and modernization opportunities.
• Lead current state assessment and target state AWS architecture definition across compute storage networking security identity data and application domains.
• Select appropriate AWS services aligned to enterprise standards scalability needs security controls and cost expectations.

2. Delivery Leadership for On Prem to AWS Migration

• Own delivery governance for migration execution ensuring adherence to architecture methodology and organizational best practices.
• Guide migration teams on workload prioritization dependency mapping wave planning and cutover strategies.
• Provide architectural oversight during build testing deployment and hypercare phases.

3. Enterprise Tool & Platform Integration

• Ensure seamless integration of enterprise tools within the AWS target environment including:
  • Monitoring (e.g. Datadog CloudWatch AppDynamics)
  • Security tooling (SIEM/SOAR vulnerability scanners identity systems)
  • ITSM/ITOM platforms (ServiceNow CMDB integrations)
  • DevSecOps pipelines and enterprise CI/CD frameworks
• Define integration patterns interface contracts and compliance controls for all cross-platform interactions.

4. Risk Management & Governance

• Establish and maintain a migration risk register covering technical security compliance timeline and operational risks.
• Drive proactive mitigation strategies and technical solutions to reduce migration complexity and cutover risks.
• Ensure architectural decisions meet enterprise risk security and regulatory requirements.

5. Financial Governance & Cost Optimization

• Develop cost models and TCO calculations for AWS target environments.
• Ensure design decisions minimize unnecessary spend through rightsizing architectural efficiencies and use of AWS cost-optimization features.
• Collaborate with FinOps teams to track usage patterns and optimize ongoing run-rate.

6. Timeline Program and Stakeholder Management

• Partner with program management teams to define realistic migration timelines milestones and success measures.
• Ensure cross-functional alignment between engineering security infra networking and business stakeholders.
• Present architectural decisions risks and progress updates to senior leadership and steering committees.

Required Skills & Experience

Technical Expertise

• 18 22 years of experience in enterprise IT architecture including 4 6 years in AWS cloud architecture.
• Proven hands-on experience designing and governing complex cloud migration programs.
• Strong knowledge across:
  • AWS compute storage networking VPC design IAM KMS
  • Containers & serverless (ECS EKS Lambda)
  • Databases (RDS Aurora DynamoDB migration tooling like DMS)
  • Landing zone / multi account design (Control Tower Organizations)
  • Security architecture compliance encryption and zero-trust principles

Enterprise Architecture & Governance

• Expertise in TOGAF SABSA or equivalent frameworks.
• Ability to develop architecture roadmaps standards principles and reusable patterns.

Leadership & Delivery

• Strong delivery governance experience for complex multi-phase migration programs.
• Ability to influence engineering teams resolve architecture disputes and guide decision-making.
• Excellent communication and executive level presentation skills.

Preferred Qualifications

• AWS Certified Solutions Architect Professional (highly preferred)
• AWS Certified Security / DevOps Engineer certifications
• Experience with hybrid-cloud multi-cloud and on-prem infrastructure modernization
• Experience working with FinOps teams on cloud cost governance

Success Criteria

• Successful delivery of end to end on prem to AWS migration waves on time and within planned cost.
• Zero defect integration of enterprise tools and services in the AWS target environment.
• Strong risk governance and proactive mitigation to reduce migration failures and downtime.
• Demonstrated cost optimization outcomes in cloud architecture and operations.