Senior Engineer- Platform Engineering

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 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.

• Hybrid working and reasonable accommodations
• Generous holiday policies
• Excellent health and wellbeing benefits including corporate membership to Wellhub
• Paid volunteer time
• Professional development support (courses, tuition/qualification reimbursement)
• Maternal/paternal leave benefits and family services
• All employee events including networking opportunities and social activities
• Lunch allowance for use within our subsidised onsite canteen
• Annual bonus opportunity: position may be eligible to receive an annual discretionary bonus award from the profit pool.
• Competitive compensation, pension/retirement plans, and various health, wellbeing, and lifestyle benefits.

• 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 containerisation (Docker, Kubernetes)
• Hands on experience with CI/CD tools (GitHub, Azure DevOps, GitLab CI)
• Experience with IaC tools (Terraform, Pulumi, Ansible)
• Proven expertise in CI/CD pipeline design, automation, and standardisation using GitHub (Actions, Advanced Security) and Azure DevOps, including migration from Azure DevOps 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 (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 scripting/programming skills (Python, PowerShell, Bash) and automation mindset
• Good understanding of security, networking, RBAC, and Zero Trust principles in cloud and DevOps environments
• 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

• 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

• Mentoring
• Leadership development programs Compliance and Policies

  Applicants should be willing to adhere to the provisions of our 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 eligibility for this position.

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

  Equal Opportunity Employer

  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.