Senior Backend Developer (.Net)

About the role

FitnessForce runs the daily operations of gyms and fitness clubs globally, from member check-in to point-of-sale retail. As a senior backend developer on our core team, you'll own the services and APIs that keep this multi-tenant platform fast, secure, and reliable at scale.

What you'll do

• Design, build, and maintain scalable, secure REST APIs in .NET Core that support our Angular web app and Flutter mobile app
• Architect data models and optimize query performance in MySQL, keeping data isolated and available across a multi-tenant platform
• Build and maintain event-driven services with Apache Kafka to keep data in sync across our integrated systems in real time
• Lead the technical build-out of core features, including cross-club access, retail workflows, and global integrations
• Use AI coding tools to speed up development, while owning the maintainability, security, and architecture of everything you ship

What you need

• 6–8 years in software engineering
• .NET
• SQL
• Kafka
• C#
• REST APIs
• Angular
• Any graduate

Good to have

• Docker
• CI/CD
• Flutter
• POS