Senior Backend Engineer
Engineering
Madrid, ES
€85,000 - €110,000
Full-Time
The Role
At Synapse, our promise of "quiet technology" relies entirely on the speed and reliability of our foundation. We are looking for a Senior Backend Engineer to architect the invisible infrastructure that powers our Knowledge Graph. You will ensure that our AI processes complex data so smoothly and securely that the user never even notices the heavy lifting.
What You Will Do
Architect Silence: Design and scale robust, low-latency backend systems that allow our generative workspace to organize scattered thoughts in milliseconds.
Seamless Synchronization: Maintain and optimize our real-time sync engine, ensuring that a user's state of flow is perfectly preserved and updated across all their devices instantly.
Secure the Sanctuary: Implement uncompromising security and encryption standards. Our users trust us with their rawest ideas; protecting that privacy is our highest priority.
Who You Are
You have deep expertise in building scalable, distributed systems and are obsessed with reducing latency (because latency breaks human focus).
You view code as a craft. You prefer radical simplicity, clean databases, and elegant architecture over trendy, overly complex frameworks.
You believe that the best infrastructure is the kind that users—and even other developers—never have to worry about.