Trading Platforms Software Engineer

LGBT Great; Greater London; Hybrid; GBP 70,000 - 120,000; Full time

Benefits offered by this job

Annual bonus

Pension/retirement plans

Health and wellbeing benefits

Job summary

Janus Henderson Investors is seeking an experienced software engineer in London to deliver features end-to-end across C# services and Angular UI, while building and maintaining integrations with major trading platforms. You will work within an established architecture and participate in a hybrid工作模式, contributing to R&D and DEI initiatives.

The role focuses on writing tests, maintaining pipelines, and collaborating with cross-functional teams in a technology-driven environment with growth

Qualifications

• Around 2–6 years of commercial software engineering experience.
• Strong C# and .NET (6/8 or equivalent recent experience).
• Solid ASP.NET Core: DI, configuration, middleware, auth, async/await.
• Competent SQL—write and tune queries; reason about data models.
• Genuine testing discipline: unit testing and mocking.
• Practical Git and CI/CD experience; branching, PRs, pipelines.
• Working knowledge of a major public cloud, ideally Azure.
• Able to read unfamiliar code and work safely in a large codebase.
• Clear written and verbal communication with non-technical colleagues.

Responsibilities

• Deliver features and fixes end to end: C# service code, Angular UI where relevant, Terraform, pipelines, deployment to production.
• Build and maintain integrations with trading platforms via REST APIs, event subscriptions and batch feeds.
• Keep domain logic free of vendor/infrastructure concerns; confine external dependencies to adapters.
• Write unit and integration tests to meet coverage gates and treat findings as defects.
• Author and maintain Snowflake and SQL Server migration scripts with versioned conventions.
• Support services in production, investigate issues using monitoring tools, participate in on-call rotations.
• Review colleagues' PRs constructively and respond to reviews on your own.
• Maintain change traceability with Jira refs and ServiceNow changes for releases.
• Contribute to modernisation of legacy components as functionality migrates.

Skills

C# / .NET

ASP.NET Core

SQL

Unit testing

Git & CI/CD

Azure

Reading unfamiliar code

Communication

Tools

Charles River

Aladdin

Bloomberg

Terraform

Angular

Snowflake

Job description

Janus Henderson Investors is seeking an experienced software engineer in London to deliver features end-to-end across C# services and Angular UI, while building and maintaining integrations with major trading platforms. You will work within an established architecture and participate in a hybrid工作模式, contributing to R&D and DEI initiatives.

The role focuses on writing tests, maintaining pipelines, and collaborating with cross-functional teams in a technology-driven environment with growth