Staff Software Engineer in London

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

We're here to build better internet infrastructure, and Bunny Storage is a core part of that mission. As a Staff Software Engineer, you'll spend your time working on the heart of Bunny Storage: designing, building, and improving the systems that power it. You'll stay close to the code while helping guide the platform's growth and evolution. This role is about building reliable systems and rethinking how storage works at a global scale to make it faster and simpler for developers. If your first instinct is "How can this be better?" and your second is to start building, you'll fit right in.

What will you do?

• Take ownership of designing and evolving the platform behind Bunny Storage to support long-term growth and performance
• Set and raise the bar for what low-latency, high-resilience storage means in practice, and ensure the system lives up to it
• Deliver critical components in Java or C#, and tune Linux systems for real-world workloads
• Take ownership of architectural decisions and keep the system improving, even when the path isn't obvious
• Set clear technical direction and align the team around shared standards
• Find and fix I/O and networking issues before they impact users

What will you bring?

• You'll bring a deep experience building storage and distributed systems, and a strong sense of ownership over the systems you work on, meaning:
• Deep technical expertise in Java or C#, and the Linux internals that matter
• Strong understanding of storage systems: filesystems, caching, file I/O, and the edge cases in between
• Real-world experience with distributed systems and a calm head when they act up
• A builder's mindset: you shape roadmaps, connect customer needs to technical reality, and move through ambiguity with clarity
• A bias for action: you prototype, ship, and lead by doing
• Experience using AI tools to move faster, without relying on them to do the thinking for you
• A steady, pragmatic demeanor overall, when things break, or priorities shift

What will make us extra happy?

• Deep knowledge of S3 (or having worked with MinIO, CEPH, etc.)
• Fluency in async systems and concurrency patterns (CompletableFutures, reactive streams)
• A performance mindset and knowing how to get the most from bare metal
• A track record of navigating complexity at scale and making the hard calls that keep systems moving

Where should you be located?

This job is fully remote from Europe (ideally CET or a close time zone). You're still free to hop around the world and switch up your scenery whenever you want.

What's in it for you?

• 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.
• Performance-based bonuses - Great work pays off, and we reward impact annually.
• 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 gets a piece of the pie, starting with 0.01% equity.
• Mental health support - Feeling down? We've got your back. provides mental health resources and help via 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.