We are looking for a Senior Backend Developer to join our team and help us build a robust, scalable platform from the ground up, leveraging insights gained from our Beta and current product usage.
You will play a key role in designing and implementing the backend architecture that powers our application and integrations with various gym management systems across Europe.
Your Responsibilities
Design and implement the server-side application logic, develop APIs, create libraries, and manage system components.
Integrate with external services, such as different Gym Management Software, to enhance functionality and provide data insights.
Support our customers by implementing their feedback and resolving technical issues.
Collaborate closely with the team to build a consistent, efficient, and responsive application.
Write clean, maintainable, and well-tested code.
Communicate directly with clients for product conception, onboarding, and training purposes.
Occasionally travel within Europe to better understand gym workflows and user needs.
Required Skills & Experience
10+ years of experience building backend systems (including at least 1 year using Node.js with TypeScript)
Proven production experience with SQL databases (ideally PostgreSQL using Prisma ORM)
Passion for mentoring and sharing knowledge with less experienced developers
Strong sense of ownership and commitment to writing high-quality, testable code
Fast learner with a creative mindset and problem-solving attitude
Customer-obsessed mindset you deeply care about user experience
Experience working in agile, fast-paced startup environments
Excellent communication skills; fluent English (C1 level)
What We Offer
Contract type: Freelance / Self-Employed (Autónomo)
Salary range: 50,000 55,000 gross per year
Fully remote work environment
Sport card to support your fitness goals
Private medical care
Exciting opportunity to shape a product from the ground up within a dynamic startup environment
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