Senior Software Engineer (Storage)

We are on a mission to help build and accelerate the internet of tomorrow. We obsess about customer experience and strive towards constant innovation, with the goal of helping companies and developers build a faster, safer, and more reliable internet.

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.

We’re looking for a Senior Software Engineer to help build the next-generation storage platform powering bunny.net’s CDN and data services. Think multi-petabyte scale, low-latency by design, and engineered from the ground up for performance. This isn’t about wrapping cloud APIs. You’ll be working close to the metal, designing distributed storage systems, optimizing Linux I/O paths, and solving tough problems in real time. Think durability, scale, and speed, all packed into a globally distributed platform. We’re a small team, which means you won’t just be a number. You’ll own your work end-to-end, shape the future of our products, and help build the very backbone of the internet. If you want to build storage that actually moves the internet, this could be your next big adventure.

What will you do?

• Hop into a lean, high-ownership team building a greenfield storage platform from scratch, shaping the future of bunny.net’s storage services.
• Design and build scalable, reliable backend systems that deliver both high performance and long-term resilience.
• Evolve and fine-tune our bare-metal Linux storage service, already running at multi-petabyte scale (and growing fast).
• Write clear, durable code with thoughtful documentation that helps everyone move faster.
• Partner closely with Infrastructure, Platform, and Support teams to debug real-world issues in a global, distributed environment.
• Solve complex backend challenges across storage, networking, and system internals, including syscalls and I/O bottlenecks.
• Champion great engineering habits. Think clean design, strong tests, and rock-solid observability.

What will you add?

• You know your way around Java, Linux, and microservices architectures.
• You know how to build distributed databases, implement replication, and design event-driven systems using Kafka or RabbitMQ.
• You’re comfortable with low-level storage concepts such as filesystems, system calls, deduplication, file I/O, and caching.
• You have a good grasp of backend fundamentals: load balancers, reverse proxies, HTTP/TLS, REST APIs, JWT, and secure communication.
• You’ve built and run large-scale distributed platforms that don’t just work, they perform and scale.
• Clean, maintainable, testable code is your jam, with a solid grip on object-oriented design (think SOLID).
• You’re a team player above all. You thrive in collaboration and help keep the vibes high with a positive, no-blame attitude.
• Experience shipping production systems that handle tons of data at lightning speed and low latency.
• You’re a self-starter who loves a challenge but never forgets the power of teamwork.

What will make us extra happy?

• You’re comfortable with asynchronous programming paradigms in C#/Java (CompletableFutures, reactive streams, etc.).
• Familiarity with S3 interface, CLI, and API would be a huge plus when building a compatible storage platform.
• Experience with Linux container technologies such as Docker and Kubernetes.
• Experience with distributed file systems, distributed database systems, reliability, or cloud services is a plus.
• Experience scaling databases horizontally and handling partitioning/sharding.
• Understanding of the internals of MinIO, Ceph, or S3 storage architectures would be a big plus.
• Great at breaking down complex tech ideas and working smoothly with teams across the board.

Where should you be located?

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

What's in it for you?

• 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.