Job Description

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.
Role
JR
Start date
Duration
Rate
Pay rate
Enterprise Architect
32944
26-Feb
4-6 weeks
600 -650
500
: 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.

Skills Required