16.10.2026 aktualisiert
Premiumkunde
100 % verfügbarSenior .NET / Azure Developer | Cloud Integration Specialist | Freelancer
Cluj-Napoca, Rumänien
Nur Remote
Bachelor of Science in Computer Science, Babes-Bolyai University, Cluj-Napoca (2011-2014)Über mich
Senior .NET / Azure developer, 10+ years backend and 6+ on Azure. I build cloud integrations, microservices and event-driven architectures: Function Apps, Logic Apps, Service Bus, API Management, with infrastructure as code and CI/CD in Azure DevOps. Remote only, open to contract work globally.
Skills
OAuth 2.0OIDCGitHub CopilotAsp.Net.Net FrameworkAdo.NetAPIsApplication IntegrationMicrosoft AzureC#Cloud-EngineeringDevOpsEntity FrameworkAzure SQLOAuth
C# .NET Development
Over 10 years in C# and .NET building enterprise backend systems, REST APIs, microservices and cloud-native applications, on ASP.NET Core and Entity Framework.
Azure Integration Platforms
6 years hands-on with Azure Functions, Logic Apps, Service Bus, API Management and App Service. My last platform ran around 30 Function Apps and hundreds of Logic Apps over Service Bus, connecting an ERP, a PIM and an external EDI provider with the rest of the company: two-way product data sync with delta and full-load flows, EDI exports of CSV files with millions of rows.
API Management and API Design
API Management as the single gateway for ~20 APIs across per-environment instances: products per consuming system, JWT validation in inbound policies, caching, payload shaping, URL rewrites. OpenAPI specs on every Function App.
Azure Service Bus and Event-Driven Integration
6 years building asynchronous messaging layers: queues, topics and subscriptions, dead-lettering and reprocessing, retry with backoff, idempotent consumers.
Hybrid Cloud and On-Premises Connectivity
Exposed on-premises services through API Management with a routing Function App over Azure Hybrid Connections; On-premises Data Gateway for Logic Apps calling internal services and file shares.
Databases
10 years SQL Server. Azure SQL with Entity Framework, plus Cosmos DB for non-relational workloads, data modelling and query optimization.
Microsoft Entra ID, OAuth 2.0 and API Security
3 years securing enterprise APIs: OAuth 2.0 client credentials with one app registration per consuming system, JWT validated at the gateway, role-based access control with ownership checked on every record, custom middleware for centralized token validation.
Microsoft Graph and SharePoint Online
Production integration with Microsoft Graph, and SharePoint Online through PnP and CSOM as a data source in automated ingestion pipelines.
Azure Key Vault and Managed Identity
Secrets and connection strings in Key Vault, accessed through Managed Identity, so no credentials live in code or configuration.
Azure DevOps, CI/CD and Infrastructure as Code
Replaced manual deployments with Azure DevOps pipelines driven by ARM templates and per-environment parameters on one platform; co-built a Terraform codebase that provisioned nearly every Azure service on another.
Application Insights and Log Analytics
Application Insights on API Management and Function Apps, Log Analytics for Logic Apps, a per-environment dashboard of failed executions, correlation IDs, KQL queries for diagnosis.
Git
7 years of Git: branching strategies, code review, a GitLab to Azure DevOps migration.
AI-Assisted Development Tools
Daily use of Claude Code, GitHub Copilot and ChatGPT for routine implementation, refactoring and documentation
Erfahrung
Berufserfahrungmehr als 10 Jahre
Freelancer seit2021
Sprachen
Englishverhandlungssicher
Projekthistorie
Azure integration platform connecting the company's business systems (ERP, PIM, central data hub) with internal consumers and external partners; the team's decision point on Azure alongside the solution architect. Migrated on-premises enterprise services to a fully event-driven Azure architecture: ~30 Function Apps and hundreds of Logic Apps integrated via Service Bus, with independent per-service deployments. Built the two-way product data integration between the central data hub and the PIM: event-driven delta sync over Service Bus queues orchestrated by Logic Apps, plus a file-based full load, thousands of product updates a day and 50-60k on bulk updates. Built the EDI integration with an external B2B provider end-to-end: scheduled Logic Apps driving a Function App that exports orders, invoices, products and company data as CSV files of up to millions of rows, delivered over REST through API Management. Ran API Management as the single gateway for ~20 APIs: one Entra ID app registration per consuming system, JWT validated in inbound policies; OpenAPI specs on every Function App. Connected the platform to on-premises with Azure Hybrid Connections and the On-premises Data Gateway. Replaced manual deployments with Azure DevOps pipelines driven by ARM templates and per-environment parameter files. Daily use of AI development tools (Claude Code, GitHub Copilot, ChatGPT).
Sole backend owner of a cloud-native B2B product configurator and pricing engine used by international distributors to configure products and stream validated orders into the corporate ERP; owned the full lifecycle, from architecture and implementation to multi-environment deployment. Built and shipped a fully documented REST API from scratch on .NET Azure Functions with Entity Framework Core and Azure SQL, deployed automatically across Dev, Training and Production. Secured access for international sales regions with scoped, role-based JWT tokens: a custom Azure Functions middleware pipeline for token validation and global error handling, with Microsoft Entra ID and Microsoft Graph behind a two-layer RBAC (role at the gateway, ownership checked on every record). Automated the ERP fulfilment pipeline end-to-end: Service Bus queues for order upload and email dispatch, CSV exchange with the ERP over OneDrive and Azure Files, and a runtime dual data-source factory switching between SharePoint master data and the SQL draft copy.
Integration layer between the firm's internal business systems (leads, orders, clients) across departments, replacing a slow, error-prone manual data replication process. Eliminated the manual replication and the human errors that came with it by designing, together with the lead and the architects, an automated event-driven integration layer between every system that needed the data. Built the integrations on Logic Apps and Service Bus, with Function Apps only where transformation logic needed code, and dead-letter handling with reprocessing for every failed message; secrets in Key Vault, Redis caching, observability through Application Insights and Log Analytics. Co-built the Terraform codebase that provisioned nearly every Azure service behind the integration layer, reproducible across environments instead of assembled in the portal.