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

• 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

• 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

Optional

• 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

• 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.

This is how we organize our work

This is how we work

in house - you focus on a single project at a time - you have influence on the technological solutions applied - you focus on product development - kanban

Team members

backend developer

This is how we work on a project

• Continuous Deployment
• Continuous Integration
• DevOps

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of foreign language classes
• life insurance
• remote work opportunities
• flexible working time
• corporate products and services at discounted prices
• extra social benefits
• pre-paid cards
• extra leave