Help us revolutionize the massage industry in Germany.
At New Soul were redefining modern wellness by blending premium in-studio experiences with a strong digital platform that powers booking payments memberships and daily studio operations. As we scale across Germany system stability performance and clean integrations are business-critical what we ship directly affects revenue operational load and customer experience.
We run a lean team with high ownership minimal meetings and a pragmatic engineering culture : ship impact keep things maintainable avoid over-engineering and document just enough so others can move fast with confidence.
Your Role
As a Senior Backend Developer youll build and evolve our backend systems and integrations that support both customer-facing journeys (booking payments memberships) and internal operational tooling. Youll work closely with Product Frontend and Ops stakeholders to deliver scalable features improve reliability and reduce operational friction.
This is a great fit for someone who can operate independently handle ambiguity and drive work end-to-end from understanding the problem to shipping the solution and leaving the system cleaner than before.
Your Responsibilities
- Build and maintain backend services that power core platform capabilities (e.g. booking availability memberships payments logic operational workflows).
- Design implement and evolve internal and external APIs (GraphQL / REST) ensuring consistency performance and long-term maintainability.
- Own technical execution for complex projects with unclear dependencies align early de-risk quickly deliver steadily.
- Proactively identify bottlenecks failure points and technical debt; propose pragmatic fixes and execute them.
- Create proof-of-concepts (POCs) where needed to validate approaches before implementation.
- Collaborate closely with frontend engineers product and operations teams to ensure smooth end-to-end delivery.
Your Tasks
Initiate and maintain lightweight but useful technical documentation :API documentation (e.g. Swagger )Infrastructure and Component Diagrams (at a level less detailed than L4 but more comprehensive than nothing).Improve and operate within a custom / minimal-framework environment focusing on incremental improvements and clarity rather than relying on heavy frameworks as Symfony.Take ownership of delivery for multiple parallel initiatives balancing urgency with quality.Requirements
Must-Have Skills
5 years of professional experience with PHP with continued interest in its application.A self-organized technically skilled individual who avoids over-engineering solutions.Advanced stage of growth in understanding the balance of complexity vs. simplicity (e.g. past the valley of despair on the Dunning-Kruger effect curve).Proficient in integrating and building internal and external APIs.Experienced in starting projects from scratch with strong architectural design skills.Comfortable joining a project as an Individual Contributor (IC) rather than enhancing an existing system gradually.Capable of independently managing and delivering tasks systems and contributions that align with team goals.Strong communication skills with a results-oriented and efficiency-driven mindset.Proficient English speaking German is a plusNice-to-Have Skills
Experience with other languages (especially Golang).Basic DevOps knowledge (Kubernetes Terraform) and comfort working with infra-adjacent topics.Tech-Stack
Core Frameworks and Libraries : In-house FrameworkLanguages and Tools : PHP8 MySQL Redis (Equivalents) RMQ / Kafka KubernetesTesting Frameworks : PHPUnitAPIs and Integrations : GraphQL REST APIs OpenAPIVersion Control and CI / CD : Git Github ActionsWhat Youll Get
Real ownership and impact : Your work directly improves customer experience and studio operations and is used by thousands of customers across Germany.Pragmatic engineering culture : High trust Flexible working hours Minimal mandatory meetings.Engineers get a top-spec laptop using the platform of their choosing.The choice of a range of Company Benefits (50% of all products and services) Urban Sports Club membership and coverage of Deutschland-Ticket.An office centrally located in Berlins beautiful Kollwitzkiez.If you want to build reliable systems that power a real-world product and work with a team that values clarity ownership and smart simplicity wed love to hear from you.
Apply now!
Key Skills
Business Intelligence,Bidding,Accounts Assistant Credit Control,Account Development,Content Development,Lab Testing
Employment Type : Employee
Experience : years
Vacancy : 1