Senior Software Engineer (Content Delivery & Security)

About bunny.net

Some people accept the internet as it is. We see what it could be.

At bunny.net, we don’t wait for change. We make it happen. You won’t find layers of red tape or play-it-safe thinking here. You’ll find people who move quickly, take ownership, and push ideas all the way to the edge. Literally.

You’ll build things that solve actual problems, not add to them.

We’re not perfect, and we don’t pretend to be. But we’re always improving. We’re looking for people who want to do the same, who take pride in their work, and aren’t afraid to challenge what’s possible.

Because everyone deserves a better internet. And we’re here to help it hop faster.

Senior Software Engineer (Content Delivery & Security)

Our stack handles millions of requests per second across 119+ PoPs on six continents. Your job? Making it faster, safer, and more efficient.

As a Senior Software Engineer on our Content Delivery & Security team, you’ll work on core CDN and DNS systems while helping build out our greenfield Shield product, focused on WAF, DDoS mitigation, and bot protection at a global scale.

You’ll design and optimize low-level systems that accelerate clean traffic and stop attacks in real time, fine-tuning for latency, resilience, and performance at the edge.

If you like digging deep into protocols, tuning performance at the edge, and building robust systems that hold up under real-world high-volume traffic, this role is for you.

What will you do?

• Design and build core features for our CDN, DNS, and Shield products with a focus on performance, scalability, and security
• Collaborate across teams to evolve distributed systems for content delivery and edge security
• Write and maintain code that processes millions of requests per second with low latency and high availability
• Implement and evolve our WAF, DDoS mitigation, and bot detection capabilities in real time at the edge
• Work closely with network and security engineers to refine our TLS/SSL, HTTPS, TCP, and reverse proxy configurations
• Diagnose and solve complex problems in large-scale distributed systems and networking stacks

What will you bring?

• Proven experience working on CDN, edge computing, or other distributed systems products
• Strong programming skills in one or more backend languages such as .NET (C#), Java, or similar
• Deep understanding of HTTPS, TCP, DNS, TLS/SSL protocols, and reverse proxy technologies like Nginx
• Prior experience in a cybersecurity-related field and working knowledge of WAF/DDoS techniques
• Track record of delivering reliable, scalable, and secure systems under real-world traffic conditions
• Willingness to learn, adapt, and contribute to a fast-evolving technical stack

What will make us extra happy?

• Hands-on experience or knowledge of WAF, DDoS mitigation, and bot detection technologies
• In-depth knowledge of DNS standards and scalability challenges
• Strong communication skills to clearly share complex technical ideas within and across teams
• Passion for optimizing performance and security at the edge
• Familiarity with content delivery architectures and reverse proxy tuning

Where should you be located?

All roles at bunny.net are fully remote. Work from wherever you hop best.

What's in it for you?

At bunny.net, we invest in you. We want to provide meaningful benefits while helping you maintain a healthy work & personal life.

• 100% flexible working hours - Work from anywhere, on your own schedule.
• Medical, dental, and vision insurance - Coverage worldwide.
• Paid time off - Love visiting the seaside? No problem. We do too. We offer 25 days of paid vacation (plus your local public holidays).
• Parental leave - Bonding with the little ones is super important, so we offer parental leave and flexible scheduling to ease into parenthood.
• Home office budget - We believe everyone is more efficient working in a comfortable office, and we're happy to help you set it up with an annual budget of €500.
• Paid sick leave - Feeling ill? Take time off to fully recover without having to worry about your finances.
• Mental health support - Feeling down? We've got your back. bunny.net provides mental health resources and help via BetterHelp.com.
• Wellness budget - An annual well-being budget of €480 is here to help you stay fresh and focused.
• Educational budget - A dedicated yearly learning and educational budget of €500 for books, seminars, and online courses to keep your learning on track.

We're ready if you are!