Software Engineer (backend) (f/m/d)

As a Software Engineer (backend) at ONEKEY, you will play a pivotal role in building and scaling the core backend systems of our SaaS platform for Product Cybersecurity and Compliance. You will develop cloud-native services that power automated IoT firmware analysis and integrate cutting-edge security research into production-ready solutions. Working closely with frontend developers and white-hat hackers, your contributions will directly influence platform reliability, performance and the long-term growth of ONEKEY.

You’ll be part of a small, highly skilled engineering team, working closely with white-hat hackers, frontend developers and other stakeholders. This role offers deep technical challenges, strong exposure to IT security topics and the opportunity to contribute to both product development and open-source initiatives.

• Problem-oriented & Creative
  You enjoy solving complex technical problems and designing clean, maintainable backend systems.
• Security-curious
  You are interested in IT security topics such as vulnerability research, reverse engineering, or penetration testing.

• A World-Class Team
  World class cybersecurity expert team in Belgium, Germany, Hungary.
• European Leader in Product Cybersecurity & Compliance
  Being part of the leading European team and technology for product cybersecurity & compliance.
• Remote or Office Flexibility
  Opportunity to work remotely or from our awesome office in Budapest;
• Start-Up Spirit, Streamlined Processes
  A start-up atmosphere, but with stream-lined processes (not overcontrolled ones).
• Flat Hierarchies and Transparent Culture
  Flat hierarchy and a transparent and open-minded culture;
• Competitive Compensation & Top Equipment
  Highly competitive compensation, state of the art equipment;
• Collaboration Across Borders
  Opportunity to meet your colleagues in person in Belgium/ Germany/ Hungary.
• Modern Communication
  No emails, just Slack for our daily internal communication.

• Backend Development
  Developing backend services for ONEKEY Product Cybersecurity & Compliance Platform
• Security Collaboration
  Cooperating closely with white-hat hackers to integrate research findings into production systems.
• Testing and Quality
  Developing and maintaining automated testing environments and ensuring high software quality through TDD and best practices.
• Agile Collaboration
  Working in close cooperation with others in an agile, cross-functional team.

• Python Development
  Strong experience with Python development and scripting.
• Linux
  Solid experience working with Linux-based systems.
• Data and Messaging
  Experience with SQL databases.
• Continuous Delivery
  Experience with CI/CD environments and cloud-native architectures.
• Language Skills
  High level of written and spoken English.
• Security Interest
  Any experience or strong interest in IT security (penetration testing, reverse engineering, CTFs, etc.) is a strong plus.‍

‍Nice to have:

• Containerization & Development Environments
  Experience working with Docker and containerized environments. Familiarity with Nix/NixOS is considered a strong plus.
• Cloud-native Development
  Experience with containerization, API design and cloud-native architectures.
• Operating System Internals
  Knowledge of low-level operating system architecture and services. Experience with debuggers and system call tracing.