Senior Backend Developer

Join us in shaping the future of online protection.

Guardio protects millions of people from the threats they never see coming, like phishing scams, financial fraud, and the small cracks in online security that cause big problems. As a B2C company, we build smart, intuitive tools that help individuals and small businesses stay safe, effortlessly. We’re a fast-growing team of over 90, united by a shared goal: to make digital life safer for everyone. Our culture moves quickly but stays human, rooted in transparency, feedback, and collaboration. And yes, we have a good time while we’re at it, with team dinners and traditional karaoke nights.

If you’re ready to work on meaningful challenges, grow fast, and help shape what online safety looks like for the next million users, you’re in the right place.

So, what's the job?



We are looking for a Senior Backend Developer to join our R&D team!

You will:

• Join a core team of experienced engineers to design, develop, and maintain scalable backend services using Python and Golang.
• Collaborate with amazing people across multiple departments—DevOps, product management, cybersecurity, and more—to build robust solutions.
• Build production-grade systems that tackle high-scale, low-latency challenges, processing petabytes of data and handling 30K+ requests per second.
• Define architecture, quality standards, and best practices while delivering simple, high-quality, and well-tested code.
• Continuously explore new technologies—from cloud platforms and containerization tools like Kubernetes to big data systems like BigQuery—to drive innovation.
  
  

• 5+ years as a backend developer, building production-grade systems from initial commit to launch using Python and Go.
• Proven track record in designing scalable systems with RESTful APIs, microservices, and distributed architectures using relational and NoSQL databases.
• Skilled in leveraging cloud platforms to create high-performance, low-latency solutions.
• A strong team player with excellent communication, thriving in agile, cross-functional environments.
• Bonus: Experience with BigQuery, open source contributions, and a solid understanding of web cybersecurity vulnerabilities and attack surfaces.
  
  

• Python
• Go
• GoogleCloud using K8S
• MySQL + Redis + BigQuery
• Thinking of a great addition? Let's do it.