Senior AI Security Engineer

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 AI Security Engineer

AI agents are changing how software gets built and operated, and they’re opening a whole new attack surface. Security is racing to catch up.

We’re building a security layer for that traffic at the edge. It will inspect requests going into LLMs and the responses coming back, detect threats in real time, and block them without adding noticeable latency.

This is a new area for us, and there’s still a lot to figure out. You’ll work with a small AI team to define what we detect, which techniques work in production, how we keep false positives under control, and how we do all of that across bunny.net’s global edge network.

What will you do?

• Shape AI security at the edge, turning new threats into protections customers can actually use

• Think like an attacker, finding new ways AI systems can be exploited, and ways to stop them

• Build for real time, catching threats without slowing down the applications we’re protecting

• Own problems end-to-end, from early experiments and architecture to production

• Make the hard trade-offs between detection accuracy, false positives, latency, cost, and customer experience

• Take what works globally across bunny.net’s edge network

What will you bring?

• 7+ years building and architecting production software, with hands-on experience in Python

• Deep hands-on LLM and agent experience, including model APIs, tool/function calling, context management, guardrails, and evaluation

• Strong LLM security experience, including detecting threats such as prompt injection, jailbreaks, data leakage, tool abuse, or agent security

• Hands-on machine learning experience, building or integrating models for classification, anomaly detection, or threat detection

• Strong HTTP and API knowledge, ideally from building gateways, proxies, middleware, or systems that operate in the request/response path

• You use AI tools to move faster, and you know how to test, challenge, and safely use what they generate in production

What will make us extra happy?

• Real-time detection or enforcement experience, working with rules, heuristics, classifiers, anomaly detection, ML models, or a combination of them

• Production experience with LangChain, LangGraph, Hugging Face, PyTorch, TensorFlow, scikit-learn, or similar

• Experience with model evaluation, embeddings, fine-tuning, or specialized detection models

• Experience with streaming or low-latency systems

• Experience with CDNs, edge computing, or globally distributed infrastructure

Where should you be located?

Europe, ideally within CET ±3 hours so collaboration with the team feels natural rather than scheduled.

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. Miss the office? We’ll give you a 3-night voucher for visiting our headquarters.

• Medical, dental, and vision insurance - Coverage worldwide.

• Paid time off - Love the slopes or the sea? Enjoy them with 25 vacation days, plus an extra loyalty day each year, capped at 5 years (30 days total), on top of your local public holidays.

• Meeting-free Thursdays - We keep Thursdays meeting free internally so you can focus on deep work without interruptions.

• 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.

• Parental leave - Paid 16 weeks for birthing parents, 8 weeks for non-birthing parents. If your country gives more, that’s your baseline. If it gives less, we top it up. Take your leave all at once or split it across the first year for maximum flexibility. After paid leave, your local statutory rules apply.

• Annual fluffle building - We're remote, but not distant! Once a year, we meet in a sunny location where virtual high-fives turn into real ones.

• Employee Stock Option Plan (ESOP) - Everyone at bunny.net gets a piece of the pie, starting with 0.01% equity.

• 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 - €500 yearly for books, seminars, or online courses to keep your learning on track, work-related or not.

• Music on us: Work is better with music. Enjoy a yearly Apple, Spotify, or YouTube Premium subscription on us.