Senior .NET Backend Engineer

Octet Turkey; Sarıyer; On-site; TRY 420,000 - 700,000; Full time

Job summary

Octet is a financial technology company delivering cash flow management solutions. Octet Türkiye operates under Turkish financial regulations and focuses on scalable, high-performance software systems.

The team emphasizes modern architectures, automated testing, and integration with AI-powered workflows. The role targets senior developers with strong C#/.NET expertise, OOP/SOLID practices, and experience with microservices, queues, and databases.

Qualifications

• Bachelor's degree in Computer Engineering, Software Engineering, or related field.
• 5+ years of professional software development experience.
• Strong hands-on experience with C# and .NET.
• Solid knowledge of OOP, SOLID, clean code, and design patterns.
• Experience with asynchronous programming, RESTful APIs, and SOAP services.
• Experience with message queues and event-driven systems (RabbitMQ or Kafka).
• Experience with Redis, Elasticsearch, EF Core, MS SQL Server, and/or PostgreSQL.
• Experience in modular monolith and microservices architectures.
• Ability to write scalable, maintainable, and high-performance code.
• Familiarity with automated testing and TDD/BDD.

Skills

C# and .NET

OOP / SOLID / design patterns

Async programming / RESTful / SOAP

Message queues (RabbitMQ / Kafka)

Databases (Redis / Elasticsearch / EF 

SQL databases (MS SQL Server / Postgre

Modular monolith & microservices

Testing / TDD & BDD

AI-assisted development tools

Education

Bachelor’s degree in Computer Engineering, Software Engineering, or related field

Tools

RabbitMQ

Kafka

Entity Framework Core

MS SQL Server

PostgreSQL

Redis

Elasticsearch

Job description

Octet is a financial technology company delivering cash flow management solutions. Octet Türkiye operates under Turkish financial regulations and focuses on scalable, high-performance software systems.

The team emphasizes modern architectures, automated testing, and integration with AI-powered workflows. The role targets senior developers with strong C#/.NET expertise, OOP/SOLID practices, and experience with microservices, queues, and databases.