Description

I’m a backend engineer focused on building scalable and reliable systems, mostly in fintech and real-time applications.

I’ve been working with .NET for several years, designing microservices and event-driven architectures using tools like Kafka, RabbitMQ, and SignalR. I enjoy solving problems around high-load systems, messaging, and distributed workflows.

Recently, I’ve been working on electronic money and payment systems, dealing with things like transaction flows, system reliability, and integrations with external services (Open Banking, ERP, etc.).

I care about building systems that actually work in production, not just in theory. That means handling failures properly, making systems observable, and keeping things maintainable over time.

I’m comfortable taking ownership of backend systems end-to-end, from design to deployment.

Languages

English
Native or bilingual
Dutch
Native or bilingual
French
Native or bilingual
German
Fluent

Workplace preferences

Remote only

Primarily works remotely

Parolapara Electronic Money Institution
Software Engineer
January 2025 - Today (1 year and 5 months)
İstanbul, Türkiye
Designed and developed high-availability backend services for electronic money, wallet, and payment systems using .NET Core and ASP.NET Core Web API
Built distributed microservices using event-driven architecture, applying Saga Pattern, Outbox/Inbox, and idempotent processing for financial transactions
Implemented asynchronous messaging and event streaming with RabbitMQ (MassTransit) and Kafka
Developed real-time communication components using SignalR (WebSockets) for instant transaction processing and system status updates
Applied Event Sourcing with EventStoreDB to ensure full auditability and traceability of financial operations
Developed background and scheduled jobs using Worker Services, Quartz, and Hangfire
Integrated Open Banking APIs, ERP systems (Logo Tiger), and third-party platforms (Next4Biz, Alotech)
Prepared and maintained regulatory reports (Virtual POS, Wallet, B2C, FAST / TCMB)
Designed and maintained scalable multi-tenant architectures
Improved system resilience using Polly (Circuit Breaker, Retry, Timeout, Fallback, Hedging)
Implemented secure authentication and authorization using JWT and IdentityServer
Increased code quality and reliability through unit and integration testing with xUnit and Moq
Established end-to-end observability using Jaeger, Zipkin, Prometheus, and Grafana
Managed containerized deployments with Docker & Docker Compose, integrating NGINX, Ocelot, and YARP
Built and maintained CI/CD pipelines using GitHub Actions and Azure
Frostline Games
Software Engineer
March 2023 - January 2025 (1 year and 10 months)
İstanbul, Türkiye
> Developed scalable backend services for real-time game systems using .NET Core and CQRS architecture. > Implemented asynchronous messaging using RabbitMQ (MassTransit) and Kafka. > Built real-time communication features using SignalR (WebSocket). > Increased code reliability through unit testing with xUnit and Moq. > Improved observability using Jaeger, Zipkin, and Prometheus. > Implemented service health checks to monitor system availability.
NetBT Consulting Services Inc
Software Developer
February 2022 - October 2022 (8 months)
İstanbul, Türkiye
> Developed RESTful APIs using .NET / .NET Core with CQRS-based microservices architecture. > Worked in Agile/Scrum teams. > Used Git, Bitbucket, GitLab, Jira for version control and task management. > Gained basic frontend experience using JavaScript, HTML5, CSS