Node.js Developer

At THNDR, we’re building the first PvP skill gaming platform with perfected player liquidity. We partner with iGaming operators to boost retention and expand market reach with our customizable, competitive game content.We’re looking for a Backend Developer to help us build scalable integrations and backend services that make onboarding operators smooth, secure, and reliable.The RoleAs our Backend Developer focused on Integrations, you'll be responsible for designing and maintaining the systems that enable hundreds of operators to deliver exceptional gaming experiences to their users. Your work will directly impact platform reliability, operator satisfaction, and our ability to scale rapidly across global markets.ResponsibilitiesBuild APIs and backend services for operator integrations (embed flow, sessions, authentication)Implement operator-specific configurations, security checks, and webhooks/callbacksImprove scalability, monitoring, and reliability of integration servicesWrite clean technical docs for operators and internal teamsTech StackNode.js + TypeScript (Express, Nestjs)Google Cloud Platform (Cloud Run, Spanner, Firebase)DockerRequirements3+ years building production backend systems and APIsStrong understanding of authentication/security (JWT, OAuth, API keys)Experience building SaaS integrations or third-party APIsComfortable with cloud infrastructure (GCP preferred) and microservicesAble to own features end-to-end from design to productionNice to HaveGaming, real-time systems, or high-concurrency experienceWebSocket/real-time communication protocolsMonitoring tools (Datadog, Prometheus, New Relic)Fluent in English and Polish