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Senior Software Engineer - Core

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Azul Systems

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Location:
Czechia , Prague

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

We are looking for a Senior Software Engineer to join the development team behind Azul Zulu builds of OpenJDK, one of the most popular OpenJDK builds in the world. Along the OpenJDK builds, we are responsible for Azul Mission Control (ZMC), ZIUpdater,.. and other related projects. We also have a considerable impact on Java development and the whole Java community.

Job Responsibility:

  • Contribute to the functionality, quality, and timely delivery of the builds of OpenJDK
  • Design and implement new product features and enhancements
  • Participate in OpenJDK development
  • Provide technical expertise to field engineering and customer services

Requirements:

  • Strong proficiency in C/C++
  • Core Java understanding (just a plus)
  • Experience with at least one scripting languages: sh/bash/ksh, powershell
  • Good understanding of operating system concepts: file systems, networking protocols, processes, IPC
  • Familarity with tooling: debuggers (gdb, windgb), profilers
  • Solid understanding of basic Computer Science concepts (data structures and algorithms)
  • Experience in low-level and system programming is a big plus: concurrent programming, synchronization, memory management, languages runtimes, memory standard libraries
  • Familarity with programming for Linux/Windows/macOS, Solaris is a plus
  • Experience with assembly for x86/Arm is a plus
  • BS/BA in Computer Science or equivalent
  • Your presence in Czechia and valid working visa is required for this role

Nice to have:

  • Core Java understanding
  • Experience in low-level and system programming
  • Familarity with programming for Linux/Windows/macOS, Solaris
  • Experience with assembly for x86/Arm
What we offer:
  • Equity Program - be part of the company success
  • Annual bonus based on company performance
  • Referral Program - bring your colleague we would all love to work with
  • IT Equipment - MacBook Pro or any other HW according to your preferences
  • Work-life balance - 5 weeks of holidays, 5 sick days, flexible working hours, 100% work from home also possible
  • Offices in Prague City Centre - if you prefer
  • Most importantly you will work with top experts worldwide who contribute to the Java ecosystem

Additional Information:

Job Posted:
December 06, 2025

Work Type:
Hybrid work
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