Application Engineer

In this role you will build and maintain end-to-end software solutions that support traders and portfolio managers. You will work in an agile team, contributing to delivery and production support while aligning with the architectural vision. You’ll write code, tests, and deployment pipelines to turn Jira tickets into live services, and help modernise legacy components. The position offers growth, DEI–driven culture, and opportunities to contribute to R&D and innovation aligned with JHI’s goals.

• Hybrid working
• Generous holiday policies
• Professional development and tuition reimbursement
• Diversity, Equity & Inclusion initiatives
• Mental health and well-being resources
• Leave and family services

• Deliver features and fixes from code to production for C# services and Angular UI where needed, plus Terraform and pipelines
• Build and maintain integrations with vendor trading platforms (Charles River, Aladdin, Bloomberg) via APIs and data feeds
• Work within a ports-and-adapters architecture, keeping domain logic separate from infrastructure concerns
• Write unit and integration tests to meet coverage gates and address analyzer findings
• Author and maintain Snowflake and SQL Server migration scripts following versioned conventions
• Support production services by investigating issues with Application Insights and Dynatrace and contribute to root-cause fixes
• Review peers' pull requests constructively and keep change records (Jira, ServiceNow) for releases
• Contribute to modernization of legacy components as functionality moves to current platform
• Mentor junior staff where appropriate and promote a positive culture
• Participate in ongoing professional development and Innovation initiatives

• Around 2–6 years of commercial software engineering experience
• Strong C# and .NET ((.NET 6/8) or equivalent)
• Solid ASP.NET Core: DI, configuration, middleware, authentication, async/await
• Competent SQL with data modeling considerations
• Genuine testing discipline: unit tests and mocks
• Practical Git and CI/CD experience with PRs and automated pipelines
• Working knowledge of a major public cloud, ideally Azure
• Ability to read unfamiliar code in a large codebase
• Clear written and verbal communication with non-technical colleagues

• communication
• team collaboration
• mentoring
• C#
• .NET
• ASP.NET Core