Leonard Surac

Professional full-stack developer

Würth IT GmbH · Künzelsau-Gaisbach

I develop 1Plus, the sales software the Würth Group's field sales force works with, and the sales backend services behind it: customers, orders, tours, routes, basket, recommendations and the SAP integration.

• Development of the 1Plus Windows app (.NET, WinUI) and the sales backend services (ASP.NET Core, SQL Server)
• Interfaces to SAP, Microsoft Graph and a new data platform; service-to-service authorisation with OAuth2
• Built CI/CD with pre-merge checks for 1Plus (GitHub Actions) and migrated its test suite to .NET 10
• Alongside: internal admin portal with Angular and ASP.NET Core, OIDC sign-in, Helm deployment to OpenShift
• Alongside: team-wide API test repository with Bruno and smoke tests across more than 140 operations; OpenTelemetry for a Graph service
• Alongside: shared repository of AI agent skills for Claude Code and Codex in the team

C# · .NET 10 · ASP.NET Core · WinUI · Angular · SQL Server · SAP · OpenShift · GitHub Actions

Software developer

AERA EDV Programm GmbH · Vaihingen an der Enz

AERA-Online is the ordering platform for dental supplies used by about one in three dental practices in Germany. I developed the web application and the programs around it, from design to production deployment.

• Technical design, implementation and optimisation of new and existing components in front end, backend and database
• Analysed synchronisation and processing jobs and made them considerably faster
• Built import, export and interface solutions and file generation
• Mobile warehouse app with Angular and Ionic; maintained and developed desktop and legacy applications
• Code reviews, technical documentation and deployments to the production systems

VB.NET · ASP.NET · Angular · Ionic · MSSQL · WinForms

Software developer, previously apprentice IT specialist

Orga-Soft Backnang GmbH · Backnang

Apprenticeship as IT specialist for application development until 06/2024, then taken on as developer. ERP and e-commerce software for medium-sized businesses.

• Extensions of the INTEGRA ERP system in Delphi and work on its SOAP and REST interface (SQL Server 2019)
• Android apps for the field sales force and a warehouse management app built independently
• In the agile e-commerce team, modules for the shop platform with ASP.NET Core and Angular
• Search algorithms, authentication and authorisation, and performance tuning of internal caches
• CMS modules with Blazor and Razor; IIS, Azure, Git and TFS

C# · ASP.NET Core · Angular · Blazor · SQL Server · Delphi · Android

Team lead quality assurance

Quality Business Solution · Sulzbach

• Lead of quality assurance including scheduling and team coordination
• Organisation and execution of inspection and assembly processes at customer sites

Voluntary social year

Engelberg Schulverein · Winterbach

Educational supervision and organisation of day programmes.

IT specialist for application development (IHK)

Gewerbliche Schule Backnang · Backnang

Grade 1,8

Applied chemistry studies (no degree)

Hochschule Reutlingen · Reutlingen

General university entrance qualification (Abitur)

Heinrich-von-Zügel-Gymnasium · Murrhardt

Grade 2,8