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Senior Backend Developer (mwd)
Senior Backend Developer (mwd)New Soul • Berlin, Berlin, Germany
Senior Backend Developer (mwd)

Senior Backend Developer (mwd)

New Soul • Berlin, Berlin, Germany
Vor einem Tag
Stellenbeschreibung

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 plus
  • Nice-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 Framework
  • Languages and Tools : PHP8 MySQL Redis (Equivalents) RMQ / Kafka Kubernetes
  • Testing Frameworks : PHPUnit
  • APIs and Integrations : GraphQL REST APIs OpenAPI
  • Version Control and CI / CD : Git Github Actions
  • What 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

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    Senior Backend Developer • Berlin, Berlin, Germany

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