Backend Developer (Monetization Team)

We’re growing the Sheet Music Plus team and looking for a Senior Backend Developer to join our Monetization team and help build a dynamic, powerful ecosystem that empowers millions of creators worldwide through the world’s largest sheet music selection.

You will play a key role in maintaining platform stability, supporting ongoing product development, and improving delivery speed and quality across the product ecosystem.

Sheet Music Plus is a physical and digital sheet music store selling over 2.2 million licensed sheet music titles.

What is in for you?

• High load product: build tools used by millions of musicians globally - from hobbyists to professionals.

• Remote-first culture: work from anywhere.

• Radical ownership: you’ll see the direct impact of your work by owning decisions and contributing to product initiatives.

• Creative synergy: collaborate with passionate technologists, musicians, and designers in a mission-driven environment.

Key responsibilities

• Design and develop monetization features and payment processing solutions using PHP

• Integrate and optimize payment systems: Braintree, Stripe, App Store Billing, Google Play Billing

• Build and maintain integrations with internal services (analytics, warehouse, payment service, etc.)

• Generate and implement ideas to drive ARPU, LTV, and Revenue growth

• Optimize database queries, APIs, caching, and background jobs for performance and scalability

• Monitor production systems, resolve incidents, and reduce technical debt

• Collaborate closely with Product, Data, and QA to deliver measurable business impact

Required experience

• 5+ years of experience with modern PHP (8.0+)

• Strong experience with Yii2

• Solid knowledge of MySQL: database design, profiling, indexes, query optimization

• 1+ year of experience integrating payment systems (Stripe, Braintree, App Store / Google Play Billing, or similar PSPs)

• Experience with webhooks, idempotency, refunds, and chargebacks

• Experience working with high-load production systems

• Understanding of PCI / PII compliance basics

• Experience with Git workflows, code reviews, CI/CD

• Ability to independently lead projects from design to production

• Strong prioritization skills: understanding when to deliver fast vs. when to build for long-term scalability

• English level B2+

Nice to have

• Experience with e-com projects

• Experience with Click house

Benefits

Creativity every day: Make inspiring products for musicians, artists and creators – no day is the same.
Impactful work Influence the future of the music industry and change the lives of millions worldwide.
Work set up: We’ll make sure you’re set up for success with the right work equipment, whether that’s company-provided hardware or an equipment allowance.
Growth and development: Receive specialized training, language lessons, conferences and learning materials.
Team well-being: Support for your mental health and wellbeing, including confidential help during life’s tougher moments.