Senior Backend Engineer – Go / EKS / WebSockets & Reverse Proxy (IoT at Scale)

Your responsibilities

• Design, implement, and operate backend services in Go that manage millions of persistent WebSocket connections

• Own and evolve the reverse proxy layer that routes traffic from devices across our global infrastructure

• Optimize connection lifecycle handling (open/idle/close), routing logic, and failover for long-lived connections

• Manage workloads on Amazon EKS, focusing on resiliency, scalability, and automation

• Collaborate with platform, security, and architecture teams to ensure robust and secure communication flows

• Define and monitor key technical metrics: connection stability, message latency, throughput, and availability

• Build tooling for connection tracing, diagnostics, and recovery in a distributed system

• Drive continuous improvements to system observability, maintainability, and operational efficiency

Your profile

• Proven ability to handle real-time messaging systems and millions of concurrent connections

• Familiarity with telemetry and observability tools (e.g., DataDog, Prometheus)

• Fluent in English and comfortable working in international, distributed teams

• Self-motivated, pragmatic, and able to take full ownership of technical domains

Nice to Have

• Experience with IoT communication patterns, device provisioning, and cloud-to-device messaging

• Background in real-time systems, edge architecture, or message brokers

• Experience contributing to or maintaining open-source Go libraries

• Understanding of DoS protection, rate limiting, and scalable security mechanisms in WebSocket-heavy systems

Your benefits

• Dynamic International Environment: Collaborate with diverse teams globally, enriching your experience and expanding your professional network.

• Collaborative Team Culture: Join a supportive team that values your contributions and encourages your growth.

• Professional Development Opportunities: Expand your skills through engaging projects and responsibilities that challenge and inspire you.

• Flexible hybrid work arrangements: Enjoy a mix of remote work and office collaboration, with a minimum of one day per week in our modern offices.

• Comprehensive Benefits Package: Enjoy private health care, a Lunchpass card, a sports card, group insurance options and employee discounts.