Secure Web Gateway Software Systems Engineer
Open Systems
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About Open Systems

Open Systems delivers cybersecurity beyond expectations. We partner with organizations to boost the security performance of their digital transformations.

Our award-winning Managed Detection and Response (MDR) and Secure Access Service Edge (SASE) services connect and protect customers today, while increasing their security maturity for tomorrow.

Open Systems’ Mission Control SOCs and NOCs are staffed by certified, outcome-obsessed engineers who provide 24x7 global coverage.

They leverage a platform backed by data science and years of finetuning complex processes to better understand and reduce attack surfaces.

Our deep expertise as a 5-time Microsoft Gold Partner accelerates and simplifies the path to security maturity by unlocking the value of existing investments in Microsoft security tools.

Deployed in nearly 10,000 locations across 184 countries, Open Systems has earned an out of this world 97% retention rate.

No wonder our customers call it crazy good cybersecurity.

Discover more at

Currently, we are looking for a Secure Web Gateway Software Systems Engineer

Your Mission

As a Software Systems Engineer for the Secure Web Gateway, you will develop, operate and support highly scalable and globally deployed web security solutions.

You will be part of the core team that develops, shapes and operates web security services for our large customer base, constantly having security, quality, and monitoring in mind.

Specifically, you will work on product integration, the development of tools and management infrastructure as well as operating the service for our customers.

This position will give you the opportunity to be part of product development, right from the concept phase all the way through to production deployment and operations.

Your Qualifications

  • Higher education (MSc - university) with a degree in Computer Science / Engineering
  • Knowledge of network protocols and technologies including TCP / IP, TLS, DNS, and HTTPS
  • Experience in software engineering with Perl, Bash and golang
  • Willingness to take part in our 24 / 7 customer operations / support with direct customer contact
  • Experience with Linux, preferably OSIX
  • Experience with configuration management systems, preferably CBLX / buildall
  • Experience with the Squid open source proxy software
  • Experience in proactive domain analysis and URL reputation systems
  • Knowledge and experience in secure web gateways (e.g. AV scanning, proxy authentication, ...)
  • Knowledge of TLS interception (MITM in corporate context)
  • Knowledge of X509 certificate verification technology (i.e. openssl, CRL, OSCP, crlset, onecrl, ...)
  • Experience in developing customer facing tools
  • Proficiency in English
  • Competence to work in a team, as well as individually
  • Inclusive and clear communication skills
  • Bonus skills

  • Knowledge of network security concepts and practices
  • Knowledge of networking technologies and protocols (e.g. routing, firewalling, ...)
  • Knowledge of container and cloud technologies
  • Knowledge of monitoring principles
  • Knowledge of software and system testing practices
  • Frontend development skill in JavaScript or TypeScript
  • What we offer

    Open Systems will offer you interesting challenges in the dynamic and global environment of SD-WAN and cybersecurity. You will be in a work environment in which innovative solutions, rapid development times, creativity, and open communication are practiced and continuously fostered.

    The pursuit of technical advancement is at the center of our attention. Our employees are known as enthusiastic, humorous, and passionate individuals.

    It’s all about people because it’s them who make us stand out in the marketplace, not our technology.

    Come as you are! We search for amazing people of diverse backgrounds, experiences, abilities, and perspectives. Open Systems welcomes and encourages diversity in the workplace regardless of race, gender, religion, age, sexual orientation, disability, or veteran status.

    Direct applications only will be considered.


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