Senior Engineer- Platform Engineering in London

Why work for us?

A career at Janus Henderson is more than a job, it’s 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

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 Dev Ops engineering, platform architecture, and developer experience enablement, with a strong focus on CI/CD transformation (Azure Dev Ops to Git Hub), platform tooling, and data platform integration (Snowflake, Databricks).

You will act as a subject matter expert (SME) across Dev Ops 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 Dev Ops transformation initiatives, including migration from Azure Dev Ops to Git Hub, and implement standardised CI/CD pipelines, reusable workflows, and release automation frameworks.
• Develop and maintain Infrastructure-as-Code (Ia C) 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 Dev Ops tooling, including Git Hub (Actions, Advanced Security), Nexus (artifact management), and Veracode (application security), embedding security controls into pipelines and platform services.
• Enable and support Dev Ops 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
• Generous Holiday policies
• 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, Dev Ops, or infrastructure roles
• Strong experience with cloud platforms (Azure preferred)
• Proficiency in containerization (Docker, Kubernetes)
• Hands-on with CI/CD tools (Git Hub, Azure Dev Ops, Git Lab CI)
• Experience with Ia C tools (Terraform, Pulumi, Ansible)
• Strong experience in Dev Ops, Platform Engineering, or Infrastructure Engineering roles within enterprise environments
• Proven expertise in CI/CD pipeline design, automation, and standardisation using Git Hub (Actions, Advanced Security) and Azure Dev Ops, including migration from ADO to Git Hub
• 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 Dev Sec Ops 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 Dev Ops 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, Power Shell, Bash) and automation mindset
• Good understanding of security, networking, RBAC, and Zero Trust principles in cloud and Dev Ops environments
• Exposure to AI-enabled developer tooling (e. g., Git Hub 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 Fin Ops, cost optimization, and cloud governance
• Solid programming skills (Python, Go, or Java)
• Strong understanding of networking, security, and system architecture
• Experience building or contributing to an Internal Developer Platform (IDP)
• Exposure to AI-enabled development (e. g., Git Hub Copilot, automation workflows)
• Knowledge of Fin Ops, cost optimisation, and cloud governance
• Relevant cloud or Kubernetes certifications
• 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’re 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 be asked about work flexibility and our hybrid working environment.

If you need any reasonable accommodations during our recruitment process, please get in touch and let us know at recruiter@janushenderson. com .

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 here .

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.

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).

You 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 applicants’ eligibility for this position.

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.