Senior Software Engineer (Content Delivery & Security)

Bunny; City Of London; Remote; GBP 60,000 - 80,000; Full time

Job summary

A remote technology company seeks a Senior Software Engineer focused on Content Delivery & Security. You'll work on optimizing CDN and DNS systems and building robust security products. The ideal candidate has strong programming skills and is experienced with distributed systems. Enjoy remote work and flexible hours with various benefits including performance bonuses and wellness support.

Benefits

100% flexible hours

Performance-based bonuses

Medical, dental, and vision insurance

Paid time off

Home office budget

Parental leave

Annual team gathering

Employee Stock Option Plan

Mental health support

Educational budget

Qualifications

• Proven experience working on CDN, edge computing, or distributed systems products.
• Strong programming skills in C#, Java, or similar.
• Deep understanding of HTTPS, TCP, DNS, TLS/SSL protocols.

Responsibilities

• Design and build core features for CDN, DNS, and Shield products.
• Collaborate to evolve distributed systems for content delivery.
• Write and maintain code for millions of requests per second.

Skills

CDN experience

Backend programming skills

Understanding of HTTPS/TCP/DNS

Cybersecurity knowledge

Scalable systems delivery

Adaptability

Tools

Nginx

Job description

Overview

Senior Software Engineer (Content Delivery & Security)

Our stack handles millions of requests per second across 119+ PoPs on six continents. Your job is 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.

About bunny.net: We’re looking for people who move quickly, take ownership, and push ideas to the edge. We build things that solve actual problems and continuously improve. All roles at bunny.net are fully remote.

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 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

Location

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

What’s in it for you?

Life at bunny.net comes with benefits that make work (and life) better.

• 100% flexible hours - Your work, your rhythm. Whether you thrive at 3 am or on a beach at noon, we’ve got you.
• Remote-first by design - No offices, no commute, just the freedom to work anywhere. If you miss the office, you’ll be able to visit our headquarters occasionally.
• Performance-based bonuses - Great work pays off, and we reward impact annually.
• Medical, dental, and vision insurance - Coverage worldwide.
• Paid time off - 25 vacation days, plus an extra loyalty day each year (up to 30 days), plus local public holidays.
• Meeting-free Thursdays - Focus on deep work without interruptions.
• Home office budget - €500 annual budget to set up a comfortable workspace.
• Paid sick leave - Time off to recover without financial worry.
• Parental leave - Paid 16 weeks for birthing parents, 8 weeks for non-birthing parents. If your country offers more, that is your baseline. If it offers less, we top it up. Leave can be taken all at once or split across the first year.
• Annual team gathering - Once a year we meet in a sunny location for in-person connection.
• Employee Stock Option Plan (ESOP) - Starting equity with the company.
• Mental health support - Access resources through BetterHelp.
• Wellness budget - €480 annually for well-being.
• Educational budget - €500 yearly for books, seminars, or online courses.
• Music on us - Yearly subscriptions to Apple, Spotify, or YouTube Premium.