Senior Backend Software Engineer(Python)

Are you passionate about cybersecurity and ready to join a fast-growing company? Look no further—Surfshark is the place for you!

At Surfshark, you'll work with a suite of cybersecurity products, reaching a global audience. Whether you're developing new features, researching the latest threats, filming videos, or making cybersecurity topics interesting for all, you'll be a crucial part of our mission to humanize digital security and make it accessible to everyone.

Ready to make a difference in the cybersecurity world? Apply now to join the Surfshark team!

IF YOU WANT TO

• Design, architect, and implement high-performance systems to detect and prevent service abuse, automated threats, and malicious activities across Surfshark services;
• Collaborate with cross-functional teams to identify risks, model emerging threat vectors, and engineer scalable defenses;
• Build, deploy, and maintain robust rule-based systems and edge-layer defenses to mitigate large-scale attacks;
• Drive architectural decisions for backend services and data pipelines that integrate diverse telemetry sources for real-time threat detection;
• Ensure the long-term reliability, scalability, security, and cost efficiency of the infrastructure supporting anti-abuse efforts.

AND YOU CAN CHECK OFF

• Strong proficiency in Python, including experience building and optimizing scalable microservices and data processing frameworks;
• Proven ability to take end-to-end ownership of complex systems, driving features from initial concept and design through deployment and maintenance;
• Experience with cloud platforms (e.g., AWS, GCP), containerization (Docker/Kubernetes), and core networking protocols (TCP/IP, DNS, HTTPS) for debugging complex connectivity and security issues;
• Experience designing data collection pipelines and working efficiently with large-scale databases and data processing tools;
• A strong commitment to engineering excellence: writing clean, well-tested code, managing technical debt, and mentoring others through rigorous code reviews;
• An analytical, threat-hunting mindset with the ability to research evolving attack vectors and proactively propose systemic improvements.

BONUS POINTS IF YOU

• Have experience with API security, bot prevention techniques, credential stuffing countermeasures, and DDoS mitigation strategies;
• Are familiar with other backend languages used in our stack (e.g., Rust) and have the architectural judgment to know when to use them.

HERE’S THE DEAL

• Growth and learning opportunities: time dedicated to learning, conferences, online learning platforms, and books for your professional development;
• Health and wellness: we want you to feel and be your best. That's why we offer various benefits, from online workouts and a physical coach to health insurance and regular mental health checks;
• Tools of your choice: choose the technical equipment and tools you need to do your best work;
• Community and celebrations: get ready for long-lasting traditions such as yearly workation, Friday get-togethers, various team buildings and company celebrations;
• Work-life balance: as a general rule, we work based on a 3+2 hybrid model. And let’s not forget the WFA policy – an opportunity to work from anywhere in the world;
• More days off: additional vacation days depending on your tenure;
• Premium Surfshark accounts: for you, your family, and friends;
• Gross salary: 4400-7000 Eur/month. Although it may vary depending on your skills and experience.