Golang Software Engineer (Security Lab)

Location: Hanover

Hornetsecurity is a leading global provider of next-generation cloud-based security, compliance, backup, and security awareness solutions that help companies and organizations of all sizes around the world. Its flagship product, 365 Total Protection, is the most comprehensive cloud security solution for Microsoft 365 on the market. Driven by innovation and cybersecurity excellence, Hornetsecurity is building a safer digital future and sustainable security cultures with its award-winning portfolio.

Hornetsecurity operates in more than 120 countries through its international distribution network of 12,000+ channel partners and MSPs. Its premium services are used by more than 75,000 customers.


As a Golang Software Engineer at Hornetsecurity, you will play a crucial role in designing, implementing, and maintaining our messaging platform that incorporates cutting-edge features for secure and efficient message processing. Our messaging platform that is widely used by large ISPs across Europe, the US, and Japan. You will work with a team of skilled Golang engineers in the messaging services team within our Security Lab department. This department is dedicated to leveraging modern approaches and technologies to ensure the highest levels of email security.

We are searching for someone to join us as soon as possible for 40 hours peer week in our office in Hanover.

Job description details

Your job

  • You develop and maintain our messaging services using Golang.
  • You build and enhance tools for writing and managing email filtering policies.
  • You optimize the messaging platform for performance and scalability to handle high message traffic volumes.
  • You collaborate with cross-functional teams to design and implement new modern messaging features.
  • You troubleshoot and resolve issues related to the messaging platform and email delivery.
  • You write comprehensive unit and integration tests to ensure software quality.
  • You participate in code reviews and contribute to continuous improvement initiatives.

Your profile

  • You have a Bachelor’s degree in Computer Science, Engineering, or a related field.
  • You posess 3+ years of experience in software development with a focus on Golang.
  • You have a strong understanding of email protocols (SMTP, IMAP, POP3) and email security concepts.
  • You have got experience with developing and maintaining messaging services, like an MTA, or similar network-based applications.
  • You are proficient with version control systems, particularly Git.
  • You are familiar with Linux/Unix operating systems and command-line tools.
  • You have knowledge of containerization technologies (Docker, Kubernetes) is a plus.
  • You have excellent problem-solving skills and attention to detail.
  • You posess strong communication skills and the ability to work effectively in a team environment.
  • Your desire is to learn and continuously improve skills and knowledge.
  • Your English speaking and writing skills are excellent.

Your benefits

  • Free space for innovation and independent action in a fast-growing international company.
  • Short decision paths and flat hierarchies in an open work atmosphere.
  • Extensive Onboarding – we equip you with a welcome kit, 2 days Onboarding Bootcamp, Mentoring Program and regular feedback meetings.
  • Temporary Employee Exchange Program – we provide the ability for you to work at our global office locations and explore the world (e.g. Berlin, Madrid, Malta, Montréal, Washington D.C.).
  • Home-office-option and flexible working time.
  • Unlimited contracts: we’re looking for hornets to grow long-term with us.
  • Be-Active Bonus: we’ll keep you healthy with an allowance for your membership in fitness and sports clubs.
  • Referral Bonus: we pay 1500€ for each referral who is successfully hired by us!
  • Office Dogs are welcome – you don’t have to leave your dog alone at home!
  • Team events like Laser Tag, Office Movie Nights, Foodie Fridays and much more – let yourself be surprised!

Your application form

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    Viktoria Wagner | Jobs Hornetsecurity

    Any questions?

    Our Recruiter, Julia Klein, is at your disposal. You can reach her by email job@hornetsecurity.com or via WhatsApp +49 511 515 464-99.