Senior Software Engineer – Backend (Go / Distributed Systems)

Senior Software Engineer – Backend (Go / Distributed Systems)

Remote (Europe preferred) | Full-Time

We are recruiting on behalf of a fast-growing European cybersecurity startup building an open-source zero-trust network security platform used by thousands of companies worldwide to securely connect infrastructure and remote teams.

This company is redefining secure private networking by replacing traditional VPN architectures with a modern, scalable platform trusted by organizations globally.

About the Role

We are seeking a Senior Backend Engineer to design and build scalable backend systems powering a high-performance network security platform.

This is a hands-on engineering role working on core services, distributed systems, and infrastructure components that directly impact scalability, reliability, and security. You will work in a collaborative, fast-moving environment with strong ownership and autonomy.

Responsibilities

• Design and develop backend services and core platform components
• Contribute to distributed systems architecture and platform services
• Collaborate with engineering teams to design, test, and document software components
• Participate in the full development lifecycle: design, implementation, deployment, and monitoring
• Improve scalability, reliability, and performance of backend systems
• Implement observability and monitoring solutions
• Troubleshoot incidents and support production stability
• Optimize systems for performance, efficiency, and security

Requirements

• 5+ years of professional software engineering experience
• Strong experience designing distributed systems
• Proficiency in Go (preferred) or another backend language
• Solid understanding of networking fundamentals (IP, routing, protocols)
• Experience with authentication/authorization standards (OAuth2, OIDC, SSO)
• Experience with relational databases and performance tuning
• Experience with unit and integration testing
• Strong communication skills and ability to work effectively in a remote environment
• Fluent English

Nice to Have

• Experience with VPN or network security products
• Experience with gRPC or REST APIs
• Experience working in cloud environments
• Open-source contributions
• Experience building large-scale production systems

What’s Offered

• Competitive salary and equity package
• Fully remote work environment
• High ownership and autonomy
• Collaborative engineering culture
• Opportunity to work on cutting-edge zero-trust and network security technology