Senior Backend C# Platform Engineer — Performance Gaming

Hacksaw Studios; Stockholms kommun; On-site; SEK 750,000 - 1,100,000; Full time

Benefits offered by this job

Modern office

Gaming industry colleagues

Global audience

Ownership & growth

Wellbeing perks

Job summary

Hacksaw Studios in Stockholm is seeking a capable C# platform developer to join our growing team. You’ll build and maintain high-performance backend systems powering our games and platform infrastructure, solving real technical challenges that impact thousands of active users.

You’ll collaborate with product teams to ensure architectural consistency, scalability, and reliability, and you’ll contribute to tests, documentation, and ongoing performance improvements in a fast-paced gaming

Qualifications

• Proven experience in C# backend development.
• Strong ASP.NET knowledge (or willing to learn on the job).
• Proficiency in SQL and high-performance schemas.
• Experience with caching strategies, e.g., Redis.
• Multithreaded programming and thread-safe design.
• Strong debugging skills in C#.
• Commitment to performance, scalability, and reliability.

Responsibilities

• Design and implement features for the C# / ASP.NET-based platform.
• Optimize performance for high throughput and low latency.
• Write and maintain unit tests for platform stability.
• Participate in code reviews and maintain clean, documented code.
• Maintain thorough technical documentation.
• Collaborate with peers and product teams to ensure architecture consistency.

Skills

C# backend development

ASP.NET

SQL / database design

Caching (Redis)

Multithreading

C# debugging

Performance mindset

Tools

Git

TypeScript

React

Linux

Bash

NPM

Bun

Docker

Cucumber

GitLab CI

AWS

Job description

Hacksaw Studios in Stockholm is seeking a capable C# platform developer to join our growing team. You’ll build and maintain high-performance backend systems powering our games and platform infrastructure, solving real technical challenges that impact thousands of active users.

You’ll collaborate with product teams to ensure architectural consistency, scalability, and reliability, and you’ll contribute to tests, documentation, and ongoing performance improvements in a fast-paced gaming