Senior Engineer- Platform Engineering

Janus Henderson AAA CLO ETF; Greater London; On-site; GBP 80,000 - 100,000; Full time

Benefits offered by this job

Hybrid working and reasonable accommodations

Excellent Health and Wellbeing benefits

Paid volunteer time

Professional development support

Maternal/paternal leave benefits

Lunch allowance

Job summary

Janus Henderson AAA CLO ETF in Greater London is looking for a Senior Engineer to advance our Internal Developer Platform (IDP). This role encompasses DevOps engineering and platform architecture, emphasizing CI/CD transformation and platform tooling integration.

The ideal candidate will have over 6 years of experience in platform engineering and a strong background in Azure cloud services, CI/CD tools, and Infrastructure-as-Code practices. Join us for a hybrid working experience with competitive health benefits.

Qualifications

• 6+ years of experience in platform engineering, DevOps, or infrastructure roles.
• Strong experience with Azure cloud platform.
• Hands-on with CI/CD tools (GitHub, Azure DevOps, GitLab CI).

Responsibilities

• Lead the design and evolution of the Internal Developer Platform.
• Develop and maintain Infrastructure-as-Code solutions.
• Deliver and optimise cloud-native platforms on Azure.

Skills

Platform Engineering

DevOps

Azure

CI/CD

Infrastructure-as-Code

Docker

Kubernetes

Python

Terraform

Automation

Education

Bachelor’s or master’s in computer science, Engineering, or related field

Tools

GitHub

Azure DevOps

Terraform

Snowflake

Databricks

Job description

Your opportunity

As a Senior Engineer within Platform Engineering, you will lead the design, build, and evolution of our Internal Developer Platform (IDP), enabling consistent, secure, and scalable software delivery across the enterprise. This role combines DevOps engineering, platform architecture, and developer experience enablement, with a strong focus on CI/CD transformation (Azure DevOps to GitHub), platform tooling, and data platform integration (Snowflake, Databricks). You will act as a subject matter expert (SME) across DevOps tooling, automation, and platform reliability—driving best practices, standardisation, and self‑service capabilities for engineering teams.

• Design, build, and evolve enterprise platform services to support the Internal Developer Platform (IDP) and enable scalable, secure, and self-service engineering environments.
• Lead DevOps transformation initiatives, including migration from Azure DevOps to GitHub, and implement standardised CI/CD pipelines, reusable workflows, and release automation frameworks.
• Develop and maintain Infrastructure-as-Code (IaC) solutions using Terraform, Bicep, or similar tools to provision and manage cloud infrastructure.
• Deliver and optimise cloud-native platforms on Azure (primary), ensuring scalability, resilience, and cost efficiency.
• Act as SME across DevOps tooling, including GitHub (Actions, Advanced Security), Nexus (artifact management), and Veracode (application security), embedding security controls into pipelines and platform services.
• Enable and support DevOps practices for core data platforms, including Snowflake and Databricks, covering environment provisioning, CI/CD integration, and access control models.
• Implement observability frameworks, including monitoring, logging, and alerting, and contribute to SRE practices such as SLIs/SLOs, reliability engineering, and incident management.
• Embed security and compliance standards into all platform components, ensuring auditability, policy enforcement, and alignment with enterprise governance requirements.
• Drive developer experience improvements through platform standardisation, self-service tooling, templates, and AI‑enabled capabilities (e.g., Copilot, intelligent automation).
• Collaborate with Architecture, Cloud COE, SRE, and engineering teams to deliver consistent and governed platform capabilities across the organisation.
• Mentor junior engineers and contribute to technical leadership, standards definition, and engineering best practices.

What to expect when you join our firm

• Hybrid working and reasonable accommodations
• Excellent Health and Wellbeing benefits including corporate membership to Wellhub
• 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
• All employee events including networking opportunities and social activities
• Lunch allowance for use within our subsidized onsite canteen

Must have skills

• Bachelor’s or master’s in computer science, Engineering, or related field
• 6+ years of experience in platform engineering, DevOps, or infrastructure roles
• Strong experience with cloud platforms (Azure preferred)
• Proficiency in containerization (Docker, Kubernetes)
• Hands‑on with CI/CD tools (GitHub, Azure DevOps, GitLab CI)
• Experience with IaC tools (Terraform, Pulumi, Ansible)
• Strong experience in DevOps, Platform Engineering, or Infrastructure Engineering roles within enterprise environments
• Proven expertise in CI/CD pipeline design, automation, and standardisation using GitHub (Actions, Advanced Security) and Azure DevOps, including migration from ADO to GitHub
• Deep hands‑on experience with Infrastructure-as-Code (Terraform, Bicep or equivalent) and automated cloud provisioning
• Strong knowledge of Azure cloud platform, including compute, networking, identity, and security services
• Experience implementing DevSecOps practices, including integration of SAST/DAST tools (e.g., Veracode), secrets management, and secure pipeline execution
• Expertise in artifact management (e.g., Nexus) and modern DevOps tooling ecosystems
• Experience enabling Internal Developer Platform (IDP) capabilities, including self‑service provisioning, reusable templates, and platform standardisation
• Solid understanding of software development lifecycle (SDLC), release engineering, and environment lifecycle management
• Experience working with data platforms (Snowflake and/or Databricks), including CI/CD integration, environment provisioning, and access control models
• Strong knowledge of containerisation and cloud‑native technologies (Docker, Kubernetes)
• Experience with observability and monitoring frameworks (e.g., Azure Monitor, Prometheus, Grafana) and understanding of SRE practices (SLIs/SLOs, reliability engineering)
• Strong scripting/programming skills (Python, PowerShell, Bash) and automation mindset
• Good understanding of security, networking, RBAC, and Zero Trust principles in cloud and DevOps environments
• Exposure to AI‑enabled developer tooling (e.g., GitHub Copilot, intelligent automation) and improving developer experience
• Experience operating in regulated, enterprise‑scale environments with strong focus on governance, auditability, and compliance
• Strong communication, collaboration, and stakeholder management skills, with ability to act as a hands‑on SME and technical leader

Nice to have skills

• Certifications in cloud technologies or Kubernetes.
• Experience building or contributing to an Internal Developer Platform (IDP)
• Familiarity with service mesh, API gateways, and platform observability tools
• Knowledge of FinOps, cost optimisation, and cloud governance
• Solid programming skills (Python, Go, or Java)
• Strong understanding of networking, security, and system architecture
• Exposure to AI‑enabled development (e.g., GitHub Copilot, automation workflows)
• Relevant cloud or Kubernetes certifications

Supervisory responsibilities

• No

Potential for growth

• Regular training
• Continuing education courses
• Cross functional collaboration

Annual Bonus Opportunity

Position may be eligible to receive an annual discretionary bonus award from the profit pool. The profit pool is funded based on Company profits. Individual bonuses are determined based on Company, department, team and individual performance.

Benefits

Janus Henderson is committed to offering a comprehensive total rewards package to eligible employees that includes competitive compensation, pension/retirement plans, and various health, wellbeing and lifestyle benefits. To learn more about our offerings please visit the Why Join Us section on the career page.

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.

Janus Henderson Investors is an equal opportunity 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.