Senior Backend Developer

15 hours ago


Stockholm, Stockholm, Sweden Kisi Full time

We are Kisi, a pioneering physical security technology company that is revolutionizing the way businesses access and secure their spaces.

Our mission is to ensure seamless, cloud-based access to offices, facilities, and buildings, fostering a future where spaces are securely connected and accessible without boundaries.

At Kisi, you'll join a creative and innovative team with a flat hierarchy, work closely with our co-founders, and enjoy the freedom to work your way with a strong sense of ownership.

If you're passionate about cutting-edge technology and want to be part of a dynamic team that's making the world more secure and accessible, we want to hear from you

About the Role

Kisi is seeking a talented backend developer to join our dynamic team. The ideal candidate will have a robust background in backend development, with experience in programming languages such as Ruby and a passion for building innovative solutions.

  • Develop and maintain scalable backend systems and APIs. Collaborate with frontend developers to ensure seamless integration with user interfaces.
  • Write clean, scalable code in languages like Python, Java, or Ruby. Conduct thorough testing and debugging to ensure backend reliability.
  • Design and optimize SQL and NoSQL database schemas. Ensure data integrity and enhance performance through efficient query optimization.
  • Utilize Git for effective code management. Maintain clear documentation of code changes and system architecture.
  • Work with designers and product managers to deliver features on time. Stay updated on backend technologies and continuously improve technical skills.
Key Qualifications
  • Backend Technologies: Proficiency with frameworks such as Ruby on Rails or Django.
  • Database Management Systems: Experience and knowledge of SQL databases (e.g., MySQL, PostgreSQL) and NoSQL databases (e.g., Redis, MongoDB).
  • Version Control Systems: Strong proficiency with Git.
  • Integrated Development Environments (IDEs): Experience with robust IDEs like VSCode, IntelliJ IDEA, or Eclipse.
  • API Development: Ability to design, develop, and implement APIs using frameworks such as Ruby on Rails or Django.
  • Testing Frameworks: Understanding of testing methodologies and hands-on experience with testing frameworks like Minitest and RSpec.
  • Cloud Platforms: Some knowledge of cloud services such as AWS (Amazon Web Services) or GCP.
  • Project Management and Collaboration: Proficiency in using project management software such as GitHub, Slack, Google Meet.


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