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

BSH SPRZĘT GOSPODARSTWA DOMOWEGO sp. z o.o.Wrocław, dolnośląskie, Polska

2 days ago

Job description

Miejsce pracy : Wrocław

Technologies we use

Expected

Kubernetes

Optional

DataDog

Operating system

macOS

Linux

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

Our requirements

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

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

What we offer

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.

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

Wszystkie informacje o przetwarzaniu danych osobowych w tej rekrutacji znajdziesz w formularzu aplikacyjnym, po kliknięciu w przycisk "Aplikuj Teraz".

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Senior Backend Engineer • Wrocław, dolnośląskie, Polska

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