Instana is looking for a polyglott Senior Software Engineer to work on our PHP monitoring ecosystem.

Your day to day work in this role requires solid knowledge of C and Java. Candidates proficient in only one of these languages will be required to pick up the other language. Knowledge about PHP's ecosystem (frameworks and libraries) and ideally PHP internals is highly recommended in order to provide meaningful ideas to the product development. Previous experience about Distributed tracing and APM is a plus, but can be acquired on the job. This is a challenging role with good opportunity for personal growth.

Technical responsibilities in this role include

  • instrument new libraries and frameworks in the PHP Tracer
  • maintain or improve the performance of the PHP tracer and PHP profiler
  • extend the capabilities of our own PHP Trace SDK
  • maintain our PHP Trace sensor to automatically detect and install our PHP Tracer on systems
  • maintain our PHP-FPM and PHP-CGI sensors
  • add newly collected data to the frontend
  • resolve tickets regarding any of the above
  • own the build system
  • research and implement actionable PHP issue detection
  • contribute your own ideas to expand our PHP monitoring capabilities

For an overview of our PHP monitoring ecosystem, see

The position is available remotely or on-site in Solingen (Germany) or Munich (Germany). We do not expect employees to come to the office during the pandemic.


  • Proven solid professional experience in either C and/or Java (must be willing to pick up both)
  • PHP internals knowledge or PHP extension writing (recommended)
  • Up-to-date knowledge about PHP's ecosystem, e.g. libraries and frameworks (recommended)
  • Knowledge about distributed tracing and APM (optional)
  • Good code writing discipline and an eye for code efficiency
  • Strong analytical and problem solving thinking
  • Understanding of Kanban
  • Fluent in written and spoken English
  • permission to work in the US or EU

    What we offer:

    • working on PHP internals (php-src) on company time
    • competitive salary
    • paid wellness & fitness
    • optional company pension scheme
    • optional job bike
    • flexible working hours
    • regular offsite events
    • knowledgeable and friendly colleagues

    About Instana:

    As a leading provider of Application Performance Management solutions for containerized microservice applications, Instana applies automation and artificial intelligence to deliver the visibility needed to effectively manage the performance of today’s dynamic applications across the DevOps lifecycle. Founded by Application Monitoring veterans, Instana provides true AI-powered APM to help organizations deliver high performance applications today and in the future. Visit us at to learn more.