200K+ connected devices. 60+ hardware platforms. 99.99% availability. One cloud platform.signageOS powers digital signage for companies like McDonald’s, Starbucks, and 7-Eleven, as well as airports, retail stores, and offices around the world.Most software companies build applications. We build the infrastructure connecting cloud services with hardware across dozens of platforms and operating systems.Unreliable networks, inconsistent firmware, devices going offline unexpectedly?These aren't edge cases. They're the product.Build once. Deploy anywhere.We're looking for an experienced, hands-on Backend Engineer who knows their way around complex systems, thinks independently, and gets things done.You'll help build and evolve the platform behind 200,000+ connected devices worldwide, with real ownership of your work and a say in technical decisions.Our stackTypeScript · Node.js · MongoDB · GraphQL · Kubernetes · AWS · GCP · React / Next.jsWe use Claude Code, GitHub Copilot, and other AI tools to speed up development and cut down on repetitive work.Who would thrive hereStrong backend background - experience building and running production services, ideally with TypeScript / Node.js.Independent problem-solving - comfortable tackling complex problems and turning ideas into working solutions.Sound engineering judgment - a solid understanding of system design, reliability, and maintainability.Curiosity & initiative - someone who asks questions, challenges assumptions, and looks for better ways to do things.Fluent in Czech or Slovak, with communicative English.Digital signage experience isn't strictly required. We're after strong engineering skills and people who know how to put them to work.What you'll work onCore backend services, primarily in TypeScript and Node.jsDistributed systems and asynchronous communication between cloud services and HWPlatform architecture and hardware abstraction across 60+ platformsReliability, scalability, monitoring, and failure recoveryImproving existing systems and helping shape technical decisionsWhy signageOSInfrastructure, not CRUD. Build technology other software companies rely on.Real engineering challenges. Distributed systems, hardware fragmentation, and keeping 200,000+ devices running reliably.Ownership & impact. Have a real say in how things are built and where the platform goes next.Engineering over process. Small, experienced team. Minimal bureaucracy. Room to do things right.Practical detailsPrague 6 - Evropská 11 (Blox Offices)Hybrid - minimum 3 days per week in the office, ideally moreReserved parking in the building garageA well-equipped office where everything’s taken care of - quiet work zones, meeting rooms, a chill-out area, fully stocked fridges, Friday team lunches, and moreFull-time employment or freelanceStart date by agreementInterested?Send us whatever best represents your work - CV, LinkedIn, GitHub, personal projects, open-source contributions, or technical writing.We'd love to hear about the technical challenges you've tackled, what you've built, and how you're using AI in your engineering workflow.Let's build what’s next.

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Senior Back-end Engineer (Node.js, Typescript)