Senior .NET/C# Software Engineer

Beyond Sports is seeking a Senior Software Engineer (.NET/C#) to join their team in Alkmaar, Netherlands. This role involves owning critical logic to transform raw signals into clear sports narratives, architecting complex systems for detecting timing and actions, and leading the development of robust error detection systems. The engineer will define data structures for cross-team information exchange and mentor the team in Domain Driven Design, focusing on algorithmic efficiency and code quality.

Must Have

• Own critical logic for sports narratives
• Architect systems for timing and action detection
• Lead development of robust error detection systems
• Define data structures for cross-team information exchange
• Mentor team in Domain Driven Design and code reviews
• Expert-level proficiency in C# and .NET
• Proven experience with Domain Driven Design (DDD)
• Deep Algorithmic Knowledge
• Solid experience in Cloud Architecture

Good to Have

• AWS experience

Perks & Benefits

• 25 days off per year
• Pension program
• Company Lunch
• Gym card
• Fresh fruit, coffee, and Friday drinks
• Bi-monthly outings
• Office games (FIFA, chess, ping-pong)

Join Our Team as a Senior Software Engineer (.NET/C#) at Beyond Sports

If you are an experienced engineer who thrives on algorithmic complexity, loves applying Domain Driven Design to solve real-world problems, and wants to build the logic that drives the next generation of sports visualisation, we want to talk to you.

What Your Day Will Look Like

As a Senior Software Engineer, you will own the critical logic that transforms raw, noisy signals into clear sports narratives. You will architect the complex systems responsible for detecting timing and actions, distinguishing a pass from a shot, or identifying a foul in real-time.

You will lead the development of robust error detection systems for positional tracking data, ensuring our pipelines are resilient enough to handle live broadcast pressure. You will be responsible for defining the data structures used to exchange information between the Core Data team, Game Developers, and Data Scientists, ensuring seamless integration across the company.

You will also be a mentor. You’ll guide the team in Domain Driven Design, conduct code reviews that focus on algorithmic efficiency, and ensure our libraries for enhancing tracking data are scalable, maintainable, and well-documented.

What We Value

At Beyond Sports, we value raw engineering talent. We are looking for someone who understands the "why" behind the code and can translate abstract business concepts into technical reality.

You’ll fit right in if you:

• Excel at "Problem Solving" Engineering. You love math, algorithms, and solving distinct logical puzzles.
• Are a DDD Expert. You know how to use Domain Driven Design to map the complex rules of sports into clean, maintainable software.
• Build for Scale. You design systems that can handle large streams of data on cloud platforms (AWS preferred).
• Lead by Example. You communicate complex technical ideas clearly to project managers and teammates, and you elevate the code quality of everyone around you.

This role is based on-site at our Alkmaar office (40 hours per week). You’ll need to be living in the Netherlands and eligible to work in the EU.

Tech Stack and Skill Requirements

You don’t need to tick every box, but here’s what we’re looking for:

• BSc or MSc in Software Engineering (or equivalent formal qualification).
• Expert-level proficiency in C# and .NET.
• Proven experience with Domain Driven Design (DDD).
• Deep Algorithmic Knowledge: Experience developing event detection or error correction systems.
• Cross-functional collaboration: Experience designing data structures for use by other teams (e.g., Data Science/Game Dev).
• Cloud Architecture: Solid experience (AWS is a bonus) designing scalable systems.
• Mentorship: Experience reviewing code, giving feedback, and driving technical standards.

Why Level Up Your Career at Beyond Sports

Architect the Unknown. We are solving problems that haven't been solved before. You will have the freedom to design solutions that define the industry.

High Performance, High Reward. Work on systems where efficiency matters. Your optimisations in error detection will be the difference between a glitch and a perfect broadcast.

A Culture of Excellence. Join a team where technical debates are encouraged, and the best idea wins.

We also make sure it’s a great place to grow:

• 25 days off per year – rest is part of performance
• Pension program – future you says thanks
• Company Lunch – no daily food logistics
• Gym card – stay sharp on and off the screen
• Fresh fruit, coffee, and Friday drinks
• Bi-monthly outings – get out, bond, reset
• Office games – FIFA, chess, or ping-pong to unwind

Ready to Make an Impact?

If you’re ready to tackle the most challenging technical problems in the sports industry and lead a team of talented engineers, we’d love to hear from you.

At Beyond Sports, you won’t just be writing code — you’ll be engineering the game.