Intermediate Full Stack Developer

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

You will help shape the next generation of our portfolio construction platform, building modern Angular web experiences supported by a robust ASP.NET Core (.NET 10) backend. You will work across the full stack, from cloud-hosted APIs to responsive user interfaces, in a collaborative Agile environment.

• Develop and maintain Angular front-end features supported by ASP.NET Core Web APIs.
• Design REST endpoints, background jobs, caching solutions and real-time features.
• Write and optimize data access for SQL Server using EF Core and Dapper.
• Contribute to CI/CD pipelines and support cloud deployments on Microsoft Azure.
• Use AI-assisted development tools while maintaining quality, security and sound engineering practices.
• Write tests, review code and work directly with stakeholders to understand and deliver requirements.
• Collaborate on new feature development and help migrate existing desktop functionality to the web.
• Carry out other duties as assigned.

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
• Unique employee events and programs including a 14er challenge
• Complimentary beverages, snacks and all employee Happy Hours

Must have skills

• 3-5 years of experience building web applications with C#/.NET and a modern single-page application framework, preferably Angular.
• Strong TypeScript, HTML and CSS/SCSS skills.
• Solid understanding of REST APIs, authentication and asynchronous programming patterns.
• Strong SQL scripting skills, including experience with SQL Server and object-relational mapping tools such as EF Core and/or Dapper.
• Familiarity with Microsoft Azure cloud services and CI/CD practices.
• Proficiency with Git and willingness to adopt AI-assisted development tools in daily work.
• Clear communication skills and the ability to work effectively with technical and non-technical stakeholders.
• Strong problem-solving, sound judgement, collaboration and ownership from design through deployment.

Nice to have skills

• Experience using Visual Studio.
• Experience with ElasticSearch, including search indexing or relevance tuning.
• WPF and MVVM experience supporting an existing desktop client during a web transition.
• Experience with .NET MAUI or mobile application development.
• Experience with Astronomer or similar data and workflow orchestration platforms.
• Experience with Snowflake, Databricks, Redis or Application Insights.
• Experience using Python.

Supervisory responsibilities

• No

Potential for growth

• Mentoring
• Leadership development programs
• Regular training
• Career development services
• Continuing education courses

Compensation information

The base salary range for this position is $120,000 to $127,000. This range is estimated for this role. Actual pay may be different. This position will be open through October 31, 2026.

Colorado law requires an estimated closing date for job postings. Please don't be discouraged from applying if you see this date has passed.

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.