Cloud Principal Architect

GWP; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

A prominent investment firm in Greater London is seeking a Principal Architect Cloud to lead the design and strategic initiatives of enterprise-level cloud architecture primarily on Microsoft Azure. The ideal candidate will have at least 10 years of experience in cloud architecture, expertise in Azure, and a strong background in Kubernetes and Infrastructure-as-Code practices. This role includes responsibilities in cloud modernization, implementation of compliant security measures, and the management of disaster recovery strategies. Hybrid work options are available, making this a great opportunity for seasoned professionals.

Benefits

Generous holiday policies

Excellent health and wellbeing benefits

Paid volunteer time

Professional development support

Complimentary subscription to Headspace

Qualifications

• 10 years of experience in cloud architecture and engineering with deep Azure expertise.
• Proven experience designing enterprise-scale solutions using Azure, AWS, Kubernetes, and microservices.
• Expert-level proficiency in Terraform and Infrastructure-as-Code practices.

Responsibilities

• Design and guide enterprise cloud architecture across Microsoft Azure.
• Architect scalable, secure, and cost-optimized solutions on Azure.
• Lead cloud modernization initiatives including the migration of legacy workloads.

Skills

Azure expertise

Kubernetes

Cloud Architecture

Terraform

CI/CD pipelines

Networking

Identity Management

Education

Bachelor's or Master's in Computer Science or related field

Job description

Why work for us

A career at Janus Henderson is more than a job its about investing in a brighter future together.

Our Mission at Janus Henderson is to help clients define and achieve superior financial outcomes through differentiated insights disciplined investments and world‑class service. We will do this by protecting and growing our core business amplifying our strengths and diversifying where we have the right.

Our Values are key to driving our success and are at the heart of everything we do :

Clients Come First – Always Execution Supersedes Intention Together We Win Diversity Improves Results Truth Builds Trust

If our mission values and purpose align with your own we would love to hear from you!

Your opportunity

The Principal Architect Cloud is a senior technical leader responsible for designing and guiding enterprise cloud architecture across Microsoft Azure as a key member of Infrastructure Architecture team. This role demands deep hands‑on expertise in cloud infrastructure, networking, identity, container platforms and integration patterns. The architect will lead strategic initiatives including Azure Landing Zones, cloud migrations, Kubernetes‑based microservices, SD‑WAN / SASE integration, API architecture and Infrastructure‑as‑Code (IaC) using Terraform while working closely with the Head of Strategy Architecture & Platform Engineering.

Cloud Architecture & Strategy

• Define and evolve enterprise cloud architecture standards, reference models and reusable patterns
• Architect scalable, secure and cost‑optimized solutions across Azure IaaS, PaaS and container platforms
• Lead cloud modernization initiatives including migration of legacy workloads to Azure
• Collaborate with leadership to align cloud architecture with business and platform engineering strategy

Azure Expertise

• Design and implement Azure Landing Zones with governance, security and subscription strategy
• Architect solutions using Azure services: App Services, AKS, Functions, Logic Apps, Storage, Networking
• Lead multi‑region high‑availability and disaster recovery architecture
• Define tagging policy and resource hierarchy strategies for enterprise‑scale environments

Kubernetes & Microservices

• Architect and guide deployment of microservices on Azure Kubernetes Service (AKS)
• Define service mesh, ingress, autoscaling and observability strategies
• Ensure cloud‑native design principles and DevSecOps integration
• Optimize container orchestration and runtime performance

Cloud Networking & Connectivity

• Design and implement complex Azure networking: VNets, peering, ExpressRoute, VPN, firewalls, private endpoints
• Architect secure connectivity between cloud and on‑premises environments
• Integrate SD‑WAN and SASE solutions for secure scalable edge connectivity
• Lead network segmentation, routing, DNS and traffic‑management strategies

Identity & Access Management

• Architect and manage Cloud Entra ID (Azure AD) for identity federation and access control
• Implement SSO, RBAC, conditional access and multi‑tenant identity models
• Ensure secure integration of identity across cloud services and applications

Cloud Migration

• Lead migration strategy and execution from on‑premises data centers to Azure
• Define migration waves, landing‑zone readiness and workload prioritization
• Collaborate with infrastructure, application and security teams to ensure smooth transitions

API Integration & Design

• Design and govern enterprise API architecture for cloud‑native and hybrid applications
• Define standards for API security, versioning, throttling and lifecycle management
• Integrate APIs across internal platforms, third‑party services and edge environments

Infrastructure‑as‑Code (IaC) & Automation

• Lead IaC strategy and implementation using Terraform (preferred), Bicep or ARM templates
• Define reusable modules, state management and secure provisioning workflows
• Integrate IaC into CI / CD pipelines and platform automation frameworks

Governance Monitoring & Optimization

• Define cloud governance frameworks and operational guardrails and align to Enterprise Architecture Guild and Tech Architecture Board (TAB) representation from Infrastructure Architecture team
• Architect observability solutions using Azure Monitor, Log Analytics and Application Insights
• Lead cost optimization and FinOps practices across cloud environments

What to expect when you join our firm

• Hybrid working and reasonable accommodations
• Generous holiday policies
• Excellent health and wellbeing benefits including corporate membership to ClassPass
• Paid volunteer time to step away from your desk and into the community
• Support to grow through professional development courses, tuition/qualification reimbursement and more
• Maternal / paternal leave benefits and family services
• Complimentary subscription to Headspace, the mindfulness app
• All employee events including networking opportunities and social activities
• Lunch allowance for use within our subsidized onsite canteen

Must have skills

• Bachelors or Masters in Computer Science, Engineering or related field
• 10 years of experience in cloud architecture and engineering with deep Azure expertise
• Proven experience designing enterprise‑scale solutions using Azure, AWS, Kubernetes and microservices
• Strong understanding of cloud networking, SD‑WAN, SASE, identity, security and automation
• Expert‑level proficiency in Terraform and Infrastructure‑as‑Code practices
• Hands‑on experience with CI / CD pipelines and scripting (PowerShell, Bash, Python)
• Excellent communication, stakeholder engagement and leadership skills

Nice to have skills

• AZ‑305: Azure Solutions Architect Expert
• AZ‑700: Azure Network Engineer Associate
• CKA / CKAD: Certified Kubernetes Administrator / Developer
• SC‑300: Identity & Access Administrator Associate
• HashiCorp Certified: Terraform Associate
• API Design & Management (e.g. Apigee, Azure API Management)

Supervisory responsibilities

• No

Potential for growth

• Mentoring
• Leadership development programs
• Regular training
• Career development services
• Continuing education courses
• Cross‑functional collaboration

You will be expected to understand the regulatory obligations of the firm and abide by the regulated entity requirements and JHI policies applicable for your role.

At Janus Henderson Investors we are committed to an inclusive and supportive environment. We believe diversity improves results and we welcome applications from candidates from all backgrounds. Don’t worry if you don’t think you tick every box; we still want to hear from you! We understand everyone has different commitments and while we can’t accommodate every flexible working request, we’re happy to discuss work flexibility and our hybrid working environment. If you need any reasonable accommodations during our recruitment process please get in touch.

Janus Henderson (including its subsidiaries) will not maintain existing or sponsor new industry registrations or licenses where not supported by an employee’s job functions (as determined by Janus Henderson at its sole discretion).

All applicants must be willing to comply with the provisions of Janus Henderson Investment Advisory Code of Ethics related to personal securities activities and other disclosure and certification requirements including past political contributions and political activities. Applicants’ past political contributions or activity may impact applicants’ eligibility for this position.

Janus Henderson is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. All applications are subject to background checks.

Employment Type: Full Time

Experience: years

Vacancy: 1

Key Skills

• Kubernetes
• S3
• Google Cloud Platform
• Cassandra
• System Architecture
• Redshift
• AWS
• Cloud Architecture
• NoSQL
• UML
• Kafka
• Distributed Systems