Senior Rust Engineer

About the Role
We are hiring Rust Engineer to join a small, focused team. You will work across the full stack of our VPN technology, from protocol integration and custom server tooling through to building the technical capabilities that directly drive the business forward.

This is not a maintenance role. You will be building new things: custom VPN tooling, integrating emerging protocols, and developing the technology that enables Super Unlimited to differentiate its product and grow its subscriber base. You will ship code that matters to the business.

Responsibilities:
• Build custom VPN tooling and services that power our server infrastructure
• Integrate new and emerging VPN protocols into our platform
• Develop internal tools and technology stacks that the business uses to create new product features and drive subscriber growth
• Write production-quality code in Rust
• Work on server builds, provisioning pipelines, and deployment automation for a globally distributed network
• Harden and secure server infrastructure. Security is not an afterthought here
• Tune Linux systems and networking for performance and reliability
• Lead technical research and prototyping for new capabilities
• Help shape engineering culture and practices as the team grows
• Use and evaluate AI tooling as part of the development workflow - we use it across coding, code review, and research

Requirements:
• Proficiency in Rust. You write code daily, not occasionally
• Strong Linux knowledge (you are comfortable navigating the kernel, networking stack, and systemd without hand-holding)
• Solid understanding of networking fundamentals (TCP/IP, DNS, TLS, routing)
• Experience building tools, services, or automation, not just consuming them
• A security-conscious approach to everything you build
• Ability to work independently in a small team with minimal process, you identify what needs doing and do it
• Track record of shipping software that solved real problems

Highly Valued
• Familiarity with VPN technologies or tunnelling protocols (WireGuard, OpenVPN, IPsec, or similar)

• Experience with cryptography or TLS (key management, certificate infrastructure, protocol internals)
• Experience building or customising Linux distributions or server images
• Familiarity with infrastructure-as-code (Ansible, Terraform, or similar)
• Monitoring and observability experience (Prometheus, Grafana, time series databases)
• Experience shipping tools or features that directly impacted a product or business metric
• Contributions to open-source projects in the networking, security, or systems space