Senior Backend (C#) Platform Developer

Hacksaw Studios; Stockholms kommun; On-site; SEK 502,200 - 669,600; Full time

Benefits offered by this job

Wellness allowance

In-office massage

Modern office in Stockholm

Job summary

Hacksaw Studios in Stockholm is looking for a backend developer to enhance their high-performance gaming platform. You will be involved in creating and maintaining software systems that support large-scale user interactions.

The ideal candidate has extensive experience in C# and a solid understanding of ASP.NET. You'll work closely with a team to ensure the robustness and reliability of our infrastructure while enjoying a vibrant work atmosphere with great growth opportunities.

Qualifications

• Strong experience in C# backend development.
• Solid understanding of ASP.NET.
• Deep knowledge of SQL with efficient query writing.
• Practical experience with caching strategies.
• Expertise in multithreaded programming.

Responsibilities

• Build robust, scalable features for the backend platform.
• Optimize code for high throughput and low latency.
• Write and maintain unit tests for platform stability.
• Participate in code reviews for clean and maintainable code.
• Maintain clear technical documentation.
• Coordinate with product teams for architectural consistency.

Skills

C# backend development

ASP.NET

SQL

Caching strategies

Multithreaded programming

C# debugger

Performance mindset

Education

University degree in Computer Science or related field

Job description

About Us

Hacksaw Studios is a Stockholm-based game studio focused on creating innovative, high-quality gaming experiences. With a focus on performance and precision, we bring ideas to life through technical expertise and creative collaboration. We have wide distribution, and our games are played by millions of people every month by players all over the world.

The Role

You’ll be the person helping build and maintain the high-performance backend systems that power our games and platform infrastructure. You’ll be solving real technical challenges that impact thousands of active users, collaborating closely with product teams, and helping ensure our platform is robust and ready for future growth.

Your Key Responsibilities

• Design & Implement Features: Build robust, scalable features for our C# / ASP.NET-based platform and supporting systems.
• Optimize Performance: Ensure code and data structures deliver high throughput, low latency, and reliable processing of thousands of transactions per second.
• Testing & Stability: Write and maintain comprehensive unit tests to ensure platform stability.
• Code Collaboration: Participate in code reviews and contribute to clean, maintainable, and well-documented code.
• Technical Documentation: Maintain clear and thorough technical documentation.
• Team Coordination: Work closely with peers and product teams to maintain architectural consistency and meet performance standards.

What We’re Looking For

• Strong experience in C# backend development.
• Solid understanding of ASP.NET (experience preferred but can be developed on the job).
• Deep knowledge of SQL, including writing efficient queries and designing high-performance database schemas.
• Practical experience with caching strategies (e.g., Redis).
• Expertise in multithreaded programming and thread-safe design patterns.
• Proficiency in using the C# debugger for troubleshooting complex issues.
• A mindset focused on performance, scalability, and reliability.

Nice‑to‑have

• Experience with automated unit testing frameworks.
• A university degree in Computer Science or related field.
• Interest in gaming, professionally or recreationally.
• Experience with front‑end development.
• Experience mentoring or coaching other colleagues.

What We Offer

• A modern office in central Stockholm.
• Work with experienced, passionate colleagues in the gaming industry.
• The opportunity to create games with a global audience.
• Real influence, ownership, and personal growth opportunities.
• Wellbeing perks including wellness allowance and regular in‑office massage.

Practical Details

• This is an on‑site position in Stockholm.
• Unfortunately, we cannot assist with relocation or visa sponsorship.