JOIN Solutions AG
JOIN Solutions AG

(Mid/Senior) Backend Engineer - Node.js (f/m/d)

Berlin, Germany (hybrid)
65.000 € to 85.000 € / year

We are JOIN, a team of 75 colleagues from various backgrounds, all on a mission to democratize recruiting. JOIN is one of Europe's fastest-growing HR-Tech startups with over 80,000 customers in 6 countries and more than 100,000 job listings.


  • Foster collaboration with frontend, product, and DevOps/Platform teams to deliver customer-centric features.
  • Lead peer code reviews and contribute actively in project retrospectives to foster continuous improvement.
  • Engage in technical retrospectives to shape our testing culture, refine architectural strategies, streamline automation, and uphold coding standards.
  • Beyond coding, you'll champion our product's value proposition and continually seek ways to elevate our customers' experience.

Your Future Team & Engineering Philosophy

At JOIN, our Backend Guild is dedicated to empowering JOIN’s customers and their candidates with robust features, seamless business processes, and utmost security and performance. We prioritize collaborative Backend engineering, working closely with Platform, DevOps, Product, and Frontend teams.

Central to our approach is a robust architecture based on Clean Architecture principles. We maintain high standards through rigorous linters, code generators, and coding conventions, leveraging code snippets and service templates to streamline our workflows. Our commitment to Test-Driven Development (TDD) ensures comprehensive test coverage for all services, guaranteeing reliable and stable releases.


  • Seasoned Backend Developer: You bring over 7 years of solid backend development experience, proficient in any strongly typed language or TypeScript.
  • Node.js Expertise: With over 2 years of hands-on experience in Node.js, you're adept at leveraging its capabilities to build robust solutions.
  • Database Mastery: You have a strong command of any RDBMS, handling queries directly or through ORM frameworks with finesse.
  • Testing Champion: You excel in unit and integration testing, ensuring the reliability and resilience of your code.
  • Messaging Systems Experience: Proficiency in message brokers such as SNS, RabbitMQ, Kafka, or Google PubSub underscores your ability to architect scalable and efficient systems.

Nice to Have:

  • GraphQL: Experience with GraphQL adds depth to your toolkit, enhancing your ability to create flexible APIs.
  • Cloud: Familiarity with GCP or AWS enriches your understanding of cloud-native architectures.
  • gRPC: Your familiarity with gRPC frameworks and protocol buffers showcases your prowess in optimizing service-to-service communication.
  • SOLID Principles Advocate: A strong grasp of SOLID principles forms the foundation of your design philosophy, ensuring scalable and maintainable codebases.


  • An attractive annual salary ranging from EUR 65000 to EUR 85000, tailored to align with your level of experience.
  • Join our dynamic team in a flexible tech environment, with your choice of Macbook Pro or Lenovo, and enjoy ergonomic support with stand-up desks to boost productivity and well-being.
  • Experience an inspiring, diverse, and international work atmosphere
  • Work in our design office located in the famous Kulturbrauerei in Prenzlauer Berg, in the heart of Berlin!
  • Regular team events, company events, breakfast or lunch sponsored by the company
  • Enjoy flexibility with our hybrid work approach: If you work in the office as an employee (3 days a week), you'll receive an annual mobility budget of €600 for either NAVIT or a Deutschland Card.
  • You'll receive an annual benefits budget of €600 and can enjoy the perks from 35 premium partners.


Our recruiting process is designed to help us learn as much as possible about each candidate, provide candidates with insights into our team, and show them what it's like to be a team member at JOIN.

  1. HR Screening call - Google Meet
  2. Skills & Motivation (Engineering Manager) - Google Meet or onsite
  3. Cultural Fit (Product & Engineering Team) - Google Meet or onsite
  4. Technical Interview (Engineering Team) - Google Meet or onsite
  5. Offer from HR - Google Meet

We believe that uniqueness connects us and helps us succeed both as individuals and as a team. That's why we not only welcome diversity but celebrate it. We take equality and inclusion seriously and commit to welcoming everyone in our team with openness, acceptance, and respect. At JOIN, we want all team members to feel seen and supported.

We welcome all applications, regardless of age, physical or mental abilities, gender, religion, sexual orientation, or any other diverse backgrounds. Need assistance or accommodations, either in the workplace or during the hiring process? Please do not hesitate to let us know!

Don't meet all the requirements? That's okay too; we're open to exceptional profiles and celebrate diversity!

Sounds interesting? We look forward to getting to know you!

Updated: 4 minutes ago
Job ID: 11838571
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JOIN Solutions AG

51-200 employees
Technology, Information and Internet

JOIN represents the future of recruiting and is in an exceptional position to conquer the HR Tech world by storm. You are the only missing piece in the puzzle!

  1. (Mid/Senior) Backend Engineer - Node.js (f/m/d)