Senior Backend Developer (Sheet Music Plus)

Muse Group empowers music makers. We create the world’s most popular apps for playing, recording, and composing music. Through our innovative learning tools, expansive music catalogs, and free open-source software, we make it easier for millions — from beginners to experienced musicians — to be creative every day. Our talented team of music lovers collaborates all over the globe, from Limassol to Seoul, Boston to Berlin. We’re an ambitious company with the drive and culture of a startup — with many more exciting Muse Group developments to come.

We’re growing the Sheet Music Plus team and looking for a Senior Backend Developer to 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 it 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

• Develop new features for product ecosystem and e-commerce projects.
• Enable revenue-driving product initiatives.
• Write unit and integrational tests.
• Independently own backend work from design through release.
• Adhere consistently to engineering process (code review, QA, estimation).
• Reduce technical debt in core backend systems.
• Debug and resolve technical issues.

Required Experience

• Extensive experience with modern PHP (we use PHP 8.0), with the ability to leverage the strengths of the language.
• Ability to design and optimize relational databases (we use MySQL).
• Experience working with Yii2.
• Experience with high-load projects that have a long development history.
• Experience working with search systems (Elasticsearch).
• Capability to manage projects independently, from design to release and support.
• Skill in estimating deadlines, promptly flagging issues, and focusing on results.
• Understanding of which tasks can be solved "quickly" and which require a more "perfect" solution.
• Experience in optimizing PHP applications under load.
• Proven ownership mindset — taking initiative, solving problems proactively, and driving solutions forward.
• At least B2 level of English.
• Ability to work overlapping hours with US colleagues is required (till 12 pm CDT).

Nice to have

• Experience sending analytical data to services/storage (ClickHouse).
• Music background or passion for music.

Hiring process

• HR Interview.
• 1st Technical Interview.
• 2nd Technical Interview.
• Final Interview with the Hiring Team.
• Reference check.
• Offer.

We offer

Freedom for all

• Work remotely or at a co-working place of your choice in your favorite band t-shirt.

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

• Get a generous allowance for work equipment and co-working spaces (for those not in Cyprus).

Growt and development

• Receive specialized training, language lessons, conferences and learning materials.

Team well-being

• Access to therapy whenever you need it, and assistance in difficult life circumstances.

The way we work

We believe everyone in the Muse Group team is a leader. That's why our core philosophy is based on our leadership principles.

In your cover letter, please answer the following questions

• Do you have experience working with Yii2?
• Do you have experience working with high-load products?