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C Developer - DNS cybersecurity

Brno, Jihomoravský kraj, CzechiaDevelopment

Job description

Join Whalebone, a Brno-based cybersecurity company, and be part of a significant and exciting mission. We're dedicated to safeguarding one billion people from cyber threats without any hassle.

In the role of C Developer, you'll be part of an ambitious project with a crucial role in society. As our CTO Robert Šefr states, "cybersecurity is a human right, not a privilege."

This is not just another job opportunity; this is your chance to make a real impact. 

Seize the moment – apply now!

🔍 What your job will look like

  • You’ll work on our DNS resolver and that’s the reason we need you to really understand the C language.

  • Working on new features on our security layer in Knot Resolver modules.

  • Working closely with another senior developer you will be making sure the resolver runs smoothly.

  • Focusing on a rather small codebase, but a crucial one with a focus on performance and stability.

  • Focus on Code cleaness.

  • Following best practices of software development, quality assurance and maintainability.

  • Other than resolver, you’ll work on microservices around mainly in Golang (don’t worry if you have no Golang experience yet.)

  • You’ll cooperate with other teams working on different parts of our systems with technologies like Golang, Python, Java, Vue.JS

Job requirements

  • We require an in-depth C language experience

  • Knowledge of testing principles and frameworks (we use gMock)

  • In case you don't shine with Golang now, you will have a unique opportunity to learn it in our team

🌟 Nice to have

  • A big plus would be computer networking knowledge especially related to DNS

  • Docker and related technologies.

  • Experience with different operating systems

  • Desire to learn Golang

🚀 Why will you like to work with us:

  • Meaningful job - protecting everyday people against malware and hackers all around the globe.

  • Rewarding financial package, including the possibility to choose ESOP as a benefit and a motivating flexible part of the remuneration reflecting long term results.

  • Flexible working hours and possibility of HO

  • Equipment of choice - use the budget and chose what is best for you

  • Terrace - beautiful view and available for private parties

  • Regular events & teambuildings - grill, enjoy pub quiz or have a breakfast with us

  • You will be supported to learn, grow and gain new experiences with us!

  • Your opinion will matter to us - discuss your ideas and feedback directly with the CEO or CTO if you feel like they should hear them.

🐋 About us

We create zero disruption cybersecurity products for telcos, ISPs, and corporations, protecting millions of internet users from malware, phishing, ransomware, and more. Whalebone already serves 300+ customers worldwide, including A1 Austria, O2 Czechia, and Telekom Slovenia. Our diverse team of 80 members is committed to this vital cause.

🌍 Wanna know more?

Contact our HR Eva who will connect you directly to the hiring manager at or via LinkedIn.

  • Read about us:

📖 Čistíme internet jako velryba vodu od planktonu, říká ředitel brněnské firmy

📖 Lídr z Česka. Projekt DNS4EU, který rozjíždí Evropská komise, vede brněnská firma Whalebone

📖 Investoři věří, že v Brně roste firma na úrovni Avastu. Whalebone na internetu chrání miliony lidí

Brno, Czechia


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Brno, Czechia