C++ Software Developer

About Us:

At Halon, our mission is straightforward, yet powerful and complex: empower businesses through dynamic email operations. In an era where email is still the most important communications channel for business success, we provide fully-secure solutions that power innovation with flexibility, scalability and control.

Our Core Values

Clients first - We want our clients to succeed and we exceed their expectations.

Passion & commitment - We are ambitious, motivated by joy, innovative and we love to win.

Move fast, together - We put words into action and clearly communicate goals and expectations.

Trust created by transparency - We are honest and foster a culture of mutual respect and kindness.

To actively shape this next chapter, we are looking for an experienced C++ Software Engineer to join our R&D team as a full-time team member, working on technologies that protect our customers from spam and malware.

Your Responsibilities:

• Develop and maintain high-performance, multi-threaded, data-intensive applications in the area of email security.
• Work on a large, production-critical codebase, including maintenance and further development.
• Design and implement new features and functionality.
• Apply established engineering best practices such as clean code, peer reviews, test-driven development, and continuous integration.

Your Profile:

Technical Requirements

• 5+ years of professional experience in C++ software development.
• Strong expertise in multi-threaded programming.
• Solid understanding of distributed systems and networking concepts.
• Experience developing high-performance systems, including profiling and performance optimization.
• Hands-on experience developing on Linux-based systems.
• Confident use of version control systems, especially Git.

Nice to Have

• Knowledge of relational databases and SQL.
• Experience with additional programming languages such as Python, Lua, or Go.
• Familiarity with email-related technologies and security concepts.

Your Mindset

• Strong passion for software engineering, technology, and clean, maintainable code.
• Enjoyment of solving complex problems with attention to detail.
• Willingness and ability to continuously learn and adapt.
• Good communication and interpersonal skills (German would be a plus).
• Structured, delivery-oriented way of working.
• Comfort working in a dynamic, evolving, startup-like environment.

Our Offer:

• An exciting role with a high level of responsibility in an innovative email security company
• A positive working atmosphere and a strong, collaborative team spirit
• Flexible working with the option to regularly work from home
• Edenred card, public transport subsidy, and attractive employee discounts
• Monthly update meetings with shared meals and regular team events
• 30 days of vacation plus additional time off on Christmas Eve and New Year’s Eve

We welcome applications from people of all genders, backgrounds, and identities.