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(Senior) Software Systems Engineer Web Security

Open Systems AG · Zürich

Zürich · HybridFull-TimePosted Jun 30, 2026

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Job description

Are you a seasoned Senior Software Systems Engineer with a passion for web security?

Senior Software Systems Engineer Web Security

Your Mission:

As a Software Systems Engineer, you will develop and operate highly scalable and globally deployed web security solutions. You will be part of the core team that develops and shapes web security services for our large customer base, constantly having security, quality, and monitoring in mind. Specifically, you will work on product integration as well as the development of tools and management infrastructure.

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.

In addition to your work in a Development team, you will become certified as a Mission Control Engineer, providing you with knowledge in a wide area covering networking and security topics. This will give you the opportunity to visit our Network Operations Centers in Honolulu, Hawaii for 3-month deployments.

Your Qualifications:

  • Higher education (ETH, university, FH) with a degree in Computer Science or a related field
  • Knowledge of network protocols and technologies including TCP/IP, TLS, DNS, and HTTPS
  • Experience with Linux or UNIX-based operating systems
  • Experience in software engineering with scripting languages (e.g. Bash, Perl, Python) and a concurrent compiled language (e.g. golang, C#, C++)
  • 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 container and cloud technologies
  • Knowledge and experience with secure web gateways (e.g. TLS interception, …)
  • knowledge of monitoring principles
  • knowledge of software and system testing practices

What we offer:

Want to join a crazy good cybersecurity team? You’ll be among people who believe in:

Caring PASSIONATELY about keeping our customers safe – We’re dedicated to solving problems. Whatever it takes.

Thinking UNCONVENTIONALLY to stay ahead – The world never fails to surprise us. So let’s surprise it first.

Doing the hard work to make things SIMPLE – Craft and hone something that delights in its simplicity.

Working COLLABORATIVELY to build success – The power of the team will always make us faster and better.

As a testament to this, Open Systems has been recognized as an outstanding place to work. You’ll be surrounded by smart teams who enrich your experience and provide opportunities you will need to develop your skills and advance your career.

We look forward to receiving your online application (please note that you have to compress your application into two attachments).

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.

About Open Systems

Open Systems is a leading provider of native Managed SASE solutions, converging network and security functions on a cloud-native platform. Founded in 1990, the Swiss cybersecurity company, headquartered in Zurich, supports businesses and organizations in more than 180 countries with a holistic, customer-centric service model that guarantees 24x7 expert support. The combination of an innovative platform, integrated solutions, and excellent service ensures secure, reliable, and worry-free network operations – even within the complex IT infrastructures of global manufacturing companies and NGOs.

This solution delivers reliable connectivity across cloud, on-premises, and hybrid environments, while offering an exceptional user experience through an intuitive customer portal

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