[Hiring] Backend Developer @Muse Group

Role Description

We’re looking for a senior backend engineer to take full ownership of both Hal Leonard Connect and its billing system. You’ll run a live B2B product with real external customers:

• Build and maintain the product.
• Engage with partners who use it.
• Shape the product's future direction.

AI and automation are integral to our workflow. We seek someone who leverages these tools to enhance productivity and builds resources that empower teammates.

What’s in it for you?

• A product that’s truly yours.
• Two business-critical systems with direct partner contact and influence on the roadmap.
• Real-world impact on how millions of musicians access sheet music and audio.
• AI-first engineering with tools, skills, and automation as part of the job.
• Work from anywhere or join us in Cyprus.

Qualifications

• 5+ years of backend development in PHP (Yii2) with MySQL in production.
• Designed and operated a public REST API for external developers.
• Experience with third-party and legacy system integrations.
• Payments experience with Stripe.
• End-to-end service operation experience.
• SQL and analytics skills.
• AI-native engineering experience.
• Written English proficiency (B2+).
• Self-directed and comfortable owning a product with external customers.

Requirements

• Versioning, SDKs, rate limits, documentation, and backward compatibility for public REST APIs.
• Integrations with ERP/PIM, SOAP/XML, file-based imports, and data reconciliation.
• Experience with Docker/Kubernetes, crons, Grafana/Prometheus, and incident ownership.
• Ability to build Metabase dashboards and answer finance/analyst questions with data.
• Daily use of Claude Code, Cursor, or similar for development, tests, and documentation.
• Experience in writing documentation and FAQs for non-technical audiences.

Benefits

• Flexible work environment.
• Opportunity to influence product direction.
• Engagement with a wide range of partners.