Software engineer

7/2021 – offen

Unified GraphQL composition using Gateway and GraphQL Federation.

Ongoing migration of CMS legacy functionality to Docker modules. Strong emphasis of making code more maintainable and simplifying using GraphQL interface and Federation using new Gateway module.

Migration of CMS system configuration from SQL to Config Server. Tools for configuration consistency checks on every release.

Technologies/Tools: GraphQL HotChocolate, .NET 6, Docker/WSL2, Spring Config Server, MassTransit, RabbitMQ, Kibana/APM, Kerberos .NET, SNYK

Entity Framework, .Net, ASP.NET, Docker, GraphQL

1/2020 – 3/2021

● Helped integrate existing product in the Workspace/Identity platform.
Identity Server 4 OIDC client. Integrated single tenanted Care & Clinical application using a multitenant proxy service. Product in a tab in Workspace platform (iFrame).
● Designed "templated" apps/widgets in Workspace platform. The “template”
apps created using React and Redux as extensible and API agnostic apps. Used by multiple products in the Health Division for rapid development and similar look and feel. Over 100 resulting apps from 4 templates (of which 74 by our team alone).
● ETL single tenant data in a multitenant reporting database. Created
multitenant Azure SQL database for better reporting of Care & Clinical data.
Designed ETL process for reading/transforming data from single tenant databases (Azure Data Factory and switched to Azure Functions). GraphQL API for Workspace reporting apps hosted as Azure Web Apps using Docker images.

ASP.NET, ETL, Microsoft Azure, Microsoft SQL-Server (MS SQL)

8/2016 – 12/2019

● Refactored HMRC integration service and implemented VAT filing. Separated
proxy service for HMRC integration from existing code base using .NET Core.
Implemented VAT filing using cloud events and Azure Service Bus.
● Designed a new online solution for integrating multiple Online Bookkeeping
systems. Generic OAuth 1.0 and 2.0 client integration with Xero, QuickBooks,
SageOne, Exact, Twinfield.
○ Daily delta synchronisation of clients bookkeeping data and stored in Azure
Blob Storage (.gzip format).
○ Some DDD concepts applied for data projections to canonical format and
search (Azure Search).
○ Accounting data aggregation using HMRC Tax Categories for quarterly
submission (Making Tax Digital)

ASP.NET, DevOps, Docker, Enterprise Service Bus (ESB)