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mazlum orhan

@mazlumorhan

.NET Backend Engineer at Walr building a multi-tenant SaaS platform with reliable provider integrations and observable services.

Turkey

Message

At Walr, I build a multi-tenant SaaS platform, including accounts, authentication, and plan management. I integrate third-party provider APIs through fault-tolerant event-driven messaging and build C# services and RESTful APIs on .NET 10.

Before Walr, I developed and maintained scalable, multi-tenant .NET microservices for Touchtech’s B2B SaaS product. I improved uptime by 20% through performance tuning and monitoring, and deployed services on Docker and Kubernetes using GKE.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Walr

Dec 2025 - Present (10 months)

Built and integrated third-party provider APIs over event-driven, fault-tolerant messaging on Azure Service Bus, keeping data consistent across systems. Built scalable C# backend services and RESTful APIs on .NET 10 and PostgreSQL, applying Domain-Driven Design and clean architecture.

C#.NET 10 ASP.NET Core REST APIs Azure Service Bus PostgreSQL Domain Driven Design Clean Architecture Application Insights KQL Grafana CI CD Test Driven Development AI assisted Development

Backend & Cloud Engineer

Touchtech

Sep 2023 - Jun 2025 (1 year 9 months)

Developed and maintained multi-tenant, scalable .NET microservices for high-throughput B2B SaaS operations. Designed RESTful APIs and optimized real-time data flows, reducing latency through pub/sub messaging integration.