Software Engineer - Alternatives

Janus Henderson Group; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid working

Health & wellbeing benefits

Volunteer time off

Professional development & tuition

Job summary

Janus Henderson Investors in London offers a hybrid workplace with a focus on innovation across the Alternatives technology platform. You will design, build, and operate cloud-native data services, APIs, and analytics capabilities in collaboration with portfolio managers and the broader engineering team.

The role requires expert Python, cloud experience, and a strong background in data engineering. The firm supports development, analytics, and a flexible hybrid environment with extensive

Qualifications

• Strong software engineering background delivering production-grade apps.
• Expert-level Python development with Pandas, NumPy, PySpark, FastAPI.
• Experience building cloud-native solutions on Azure (preferred) or AWS.
• Experience with data platforms, data pipelines, APIs, event-driven architectures.
• Knowledge of CI/CD, DevSecOps, and Infrastructure as Code.
• Strong SQL and database skills across multiple data platforms.
• Excellent collaboration across engineering, operations, and business teams.

Responsibilities

• Develop cloud-native apps, data services, APIs, and platform capabilities.
• Collaborate with Team Lead and engineers to meet priorities.
• Ensure solutions align with architecture standards and platform vision.
• Hands-on development, testing, deployment, and support.
• Engage with investment teams across the full delivery lifecycle.
• Improve automation, scalability, reliability, and user experience.
• Support Alternative Investments applications and processes.
• Undertake additional responsibilities as required.

Skills

Python development

Cloud platforms

Azure / AWS

CI/CD / DevSecOps

SQL databases

Distributed systems

REST/GraphQL APIs

Data pipelines

Automation & IaC

Stakeholder communication

Education

Bachelor's degree in Computer Science or related

Tools

Databricks

Snowflake

Airflow

Terraform

Docker

Kubernetes

Kafka

Job description

This position will be posted for a minimum of five calendar days internally. All internal applicants are required to inform your current supervisor/manager prior to applying. Internal applicants are required to be in \"good standing\" in your current role, which is defined as a performance rating of “met all objectives” or higher. You cannot be on a current performance improvement plan or written warning for any reason and must have been in your current role for a minimum of 6 months, unless otherwise approved for an early transfer by your current leader and the People Department.

Your opportunity

• Work directly with Alternatives Portfolio Managers to build and support cloud-native applications, data services, APIs, and platform capabilities, while enabling the investment team to develop and automate their own workflows using modern engineering tools and frameworks.
• Collaborate closely with the Team Lead, Technical Lead, and wider engineering team to deliver solutions in line with business and project priorities.
• Partner with the Team Lead and Technical Lead to ensure all solutions align with the strategic technology architecture, engineering standards, and long-term platform vision.
• Perform hands-on software development, testing, deployment, and support, adhering to established engineering practices, governance standards, and delivery processes.
• Engage directly with investment teams throughout the full delivery lifecycle, from requirements gathering and solution design through to implementation and ongoing support.
• Contribute to the continuous improvement of the Alternatives technology platform, identifying opportunities to improve automation, scalability, reliability, and user experience.
• Provide support for Alternative Investments-specific applications, platforms, and business processes.
• Undertake additional responsibilities and duties as required.

What to expect when you join our firm

• Hybrid working and reasonable accommodations
• 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
• All-inclusive approach to Diversity, Equity and Inclusion
• 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

• Client-focused, committed to excellence, detail-oriented, and highly collaborative
• Craftsman-like approach to building software; takes pride in engineering excellence and instils these values across engineering teams.
• Strong software engineering background with proven experience delivering production-grade applications and platforms.
• Expert-level Python development skills, including design, development, testing, deployment, and support of business-critical applications and data services.
• Strong experience with Python libraries and frameworks such as Pandas, NumPy, PySpark, FastAPI, or equivalent.
• Proven experience designing, building, and operating cloud-native solutions on Azure (preferred), AWS, or similar cloud platforms.
• Experience building scalable data platforms, data pipelines, APIs, integration services, and event-driven architectures.
• Strong understanding of distributed computing and large-scale data processing.
• Experience implementing software engineering best practices including source control, code reviews, automated testing, CI/CD, DevSecOps, and Infrastructure as Code.
• Strong SQL and database skills, with experience working across operational, analytical, and cloud-based data platforms.
• Demonstrable passion for technology through personal projects, open-source contribution, continuous learning, or technology leadership.
• Inspires cross-functional teams towards common goals and objectives. Uses influence to align stakeholders and drive technology adoption and organisational change.
• Intellectually robust with a keen analytical approach to problem solving and technology decision-making.
• Self-organised with the ability to manage delivery across multiple initiatives and competing business priorities.
• Focused on delivering measurable business value through automation, simplification, modernisation, and process improvement.
• Strong interpersonal skills; able to establish and maintain close working relationships with engineering teams, operations teams, portfolio managers, risk teams, and senior business stakeholders.
• Confident communicator; able to explain complex technical concepts, architectural decisions, and delivery trade-offs to both technical and non-technical audiences.
• Strong ownership mentality; takes responsibility for problems and drives pragmatic solutions through to completion.

Nice to have skills

• Investment Management experience with exposure to front-office, middle-office, risk, data, or investment platform technologies.
• Experience supporting Alternative Investments, Hedge Funds, Private Markets, Multi-Asset, or Derivatives businesses.
• Experience working directly with Portfolio Managers, Traders, Investment Operations, Risk, and Quantitative teams.
• Experience with Databricks, Snowflake, Microsoft Fabric, or comparable modern data platforms.
• Experience with workflow orchestration technologies such as Airflow.
• Experience implementing Infrastructure as Code using Terraform or equivalent tooling.
• Experience with containerisation technologies such as Docker and Kubernetes.
• Understanding of real-time messaging, event streaming, and integration technologies such as Kafka.
• Experience building and consuming REST, GraphQL, or event-driven APIs.
• Experience with Azure data services and cloud architecture patterns.
• Knowledge of C#, Angular, or other modern application development technologies.
• Strong understanding of Agile delivery methodologies and product-oriented operating models.
• Degree educated in Computer Science, Engineering, Mathematics, Physics, or a related scientific discipline.

Supervisory responsibilities

• No

Potential for growth

• Regular training
• Continuing education courses

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 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 [e-mail]

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 .

Hiring Manager: Jack Goss

Janus Henderson Investors is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.

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.