Full-Stack Developer

General Description

The Full-Stack Developer at Lumu Technologies is responsible for participating in the whole cycle of product development, from ideation to deployment and beyond. A FSD understands how to work with several languages, technologies and databases including Ruby, Scala, Python, HTML, CSS, JavaScript, Docker and everything in between.  The ideal person for this role is a problem-solver with an inquisitive and innovative mind, and loves to collaborate with other teams to drive the company forward.


  • Design and implementation of low-latency, high-availability, and performant applications.
  • Collaborate with the rest of the engineering team to design and launch new features.
  • Write and test code to ensure compatibility and stability: refine and rewrite as necessary.
  • Optimizing solutions for performance and scalability.
  • Implementation of security and data protection.
  • Translate designs and wireframes into high quality code.
  • “Pixel-perfect” implementation of our approved user interface.
  • Writing reusable, testable, and efficient code and libraries for future use.
  • Effectively unit test and perform integration testing on software components.
  • Identify bottlenecks and bugs, and devise solutions to these problems.
  • Work with our data team to make our product smarter and more intuitive to use.

Required Skills and Experience

  • 4+ years of proven experience using Ruby on Rails, Play or equivalent. As well as similar experience using Javascript frameworks like React, or Angular.
    Outstanding candidates with less experience will also be considered.
  • Experience building RESTful APIs.
  • Proficiency with APIs / microservices architecture.
  • Advanced knowledge of design patterns, refactoring, and performance.
  • Experience with Ruby on Rails, along with other common Ruby libraries is expected.
  • Experience building microservices using functional programming in scala is a big plus.
  • Proficiency writing Python scripts or services is appreciated.
  • Experience with relational databases like MySQL, PostgreSQL, etc.
  • Proficiency with non-relational databases such as MongoDB or Cassandra.
  • Experience building SPAs/PWAs, using web-centric technologies such as HTML, CSS and JavaScript and frameworks such as React, Angular, Vue or others of the type.
  • Familiarity with CSS preprocessors, bundlers, and associated languages/syntaxes/libraries. E.g., Sass, Less, and webpack.
  • Experience implementing testing platforms and unit tests.
  • Solid understanding of domain driven design, microservices, event sourcing, containerization, and orchestration is a plus.
  • The ideal candidate should have a clear understanding of  cyber-attacks and passion to build software that identifies, stop and prevent those attacks.

Apply by sending your resume to: [email protected].

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