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

Janus Henderson Investors is seeking a Principal Engineer – Release & Platform Environments to provide hands‑on technical leadership across Release, Environment, and Test Data Management (RED Framework) within the Infrastructure & Cloud Operations team.

This role is accountable for defining, implementing, and operating enterprise‑grade release and environment management capabilities across hybrid platforms, supporting business‑critical systems including Aladdin, and enabling strategic programmes across Business, Infrastructure, and Cloud Operations.

The role combines deep engineering expertise with ownership of standards, policies, patterns, and frameworks, ensuring releases are predictable, environments are production‑ready, and test data is compliant and fit for purpose across the SDLC.

Release Management (RM)

• Own and execute end‑to‑end release management across development, test, UAT, staging, and production.
• Lead hands‑on release execution using Azure DevOps CI/CD pipelines across cloud and on‑prem platforms.
• Coordinate complex, multi‑application and multi‑vendor releases, including Aladdin platform releases and integrations.
• Define and enforce release management standards, policies, calendars, and quality gates.
• Ensure release readiness through technical validation, risk assessment, and go/no‑go governance.
• Design and maintain deployment, rollback, and recovery strategies.
• Produce and maintain release artefacts, including runbooks, deployment procedures, and change records.
• Drive continuous improvement in release reliability, speed, and risk reduction.

Test Environment Management (TEM)

• Design, provision, and manage end‑to‑end platform environments across Azure and on‑prem infrastructure.
• Own environment lifecycle management, including build, refresh, patching, upgrade, and decommissioning.
• Define and enforce environment standards, configuration baselines, and version alignment across the SDLC.
• Lead environment refresh activities to ensure production parity and test reliability.
• Implement environment automation and Infrastructure as Code (Terraform knowledge is an added benefit).
• Troubleshoot and resolve complex environment and deployment issues, acting as senior technical escalation.
• Define environment strategies and roadmaps aligned to platform and cloud transformation initiatives.

Test Data Management (TDM)

• Ensure availability of fit‑for‑purpose, compliant test data aligned to release and environment schedules.
• Define and implement test data management standards and patterns.
• Coordinate test data refresh, masking, anonymisation, and synthetic data strategies.
• Ensure compliance with data protection, privacy, and regulatory requirements.
• Reduce test failures caused by data quality, availability, or compliance issues.

RED Framework – Automation, Reliability & Governance

• Embed the RED Framework (Release, Environment, Data) into engineering and operational practices.
• Define and implement standards, policies, and reusable patterns for release, environment, and data management.
• Drive automation-first approaches across CI/CD, environment provisioning, and data refresh.
• Implement post‑deployment validation, health checks, and release assurance controls.
• Lead root cause analysis of release, environment, or data failures and implement preventative improvements.
• Ensure alignment with security, access control, audit, and regulatory standards.

Strategic Programmes & Collaboration

• Play a key engineering role in Aladdin transition and ongoing platform evolution.
• Support cloud migration, platform modernisation, and infrastructure transformation programmes.
• Partner closely with Engineering, QA, Architecture, Security, and Operations teams.
• Act as a technical authority for release and environment management within Infrastructure & Cloud Ops.
• Provide hands‑on mentoring and technical guidance to engineers across teams.

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

• Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent experience.
• 10+ years’ experience in Release Engineering, Environment Engineering, Platform Engineering, or DevOps roles.
• Strong hands‑on experience with Azure DevOps and CI/CD pipeline implementation.
• Proven experience delivering enterprise‑scale releases and environment management.
• Hands‑on experience supporting Aladdin platform transitions or integrations.
• Strong scripting and automation skills (PowerShell, Bash, Python).
• Deep understanding of SDLC, release management, environment lifecycle management, and deployment strategies.
• Experience defining and enforcing engineering standards, policies, and reusable patterns.
• Strong knowledge of Azure cloud services, RBAC, and secure delivery practices.

Nice to have skills

• Experience with Terraform or other Infrastructure as Code tools.
• Experience with monitoring, observability, and SRE practices.
• Exposure to test data management, data masking, and synthetic data.
• Strong incident management and production support experience.
• Financial services or regulated industry experience.
• Experience operating hybrid (cloud and on‑prem) environments.

Supervisory responsibilities

• No direct line management responsibility
• Provides technical leadership, mentoring, and peer guidance

Potential for growth

• Principal and senior technical leadership pathways
• Mentoring and leadership development programmes
• Continuous technical training and certifications
• Cross‑functional and strategic programme exposure
• Continuing education and professional development

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.