Back End Developer

Insight Global is looking for a Senior Developer to join the Integration team within an global financial services organisation, enabling faster and more consistent onboarding of new applications and data feeds into business-as-usual platforms. The team builds reusable services, APIs and supporting infrastructure (leveraging AWS native services where appropriate) in a Kanban delivery model. The core stack is SQL Server (~30%), C#.NET (~30%), Terraform (~20%), Angular (~10%) and Python (~10%).

Please note, this is a PAYE contract starting at 12 months with strong possibility for extensions and/or conversion to FTE. This role requires you to be on-site 3 days a week in the office based out of London.

Day-to-Day Responsibilities:

• Build and evolve reusable integration services and APIs for data-feed and application onboarding
• Support Database Migration Services to replicate data from one platform, to another
• Automating ingestion of monthly files produced by one platform to another
• Define communication contracts and processes
• Apply strong data modelling and automated testing across integrations
• Work within architectural governance for cross-account AWS integration
• Take assigned stories end-to-end through to production via BAU release, defect and change processes

• Strong commercial software development
• Strong SQL Server (T-SQL, stored procedures)
• Solid C#.NET development
• Terraform / infrastructure-as-code
• Python and lightweight Angular where beneficial
• Experience building reusable services and APIs for onboarding data feeds/applications
• Comfortable across multiple integrations in a monolithic, database-heavy system

Plusses:

• AWS native services - Lambda, DMS, EC2, SQS, SNS
• Ansible / wider IaC tooling
• Financial Markets (Equity) / Index Services domain knowledge
• Agentic AI tooling (e.g. GitHub Copilot)
• Cross-account AWS integration pattern experience