Senior Backend Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Backend Engineer based in India. This is a systems-focused backend engineering opportunity within a WebRTC and real-time communications environment. You’ll design, build, operate, and evolve production services that power voice and communication experiences. The role offers end-to-end ownership, from architecture and implementation through deployment, monitoring, scaling, and support. You’ll work on distributed, low-latency systems involving authentication, routing, push notifications, DNS, and diagnostics. A strong emphasis is placed on reliability, observability, operational excellence, and resilient service architecture. You’ll collaborate closely with mobile, JavaScript, infrastructure, and other engineering teams across the technology stack. This is an ideal opportunity for an experienced backend engineer who enjoys solving complex production and connectivity challenges. Accountabilities Design, develop, maintain, and operate backend services supporting WebRTC and Voice SDK products, with ownership spanning the full service lifecycle.Take responsibility for services covering authentication and token management, proxying, push notifications, RTC DNS, and diagnostic logging.Improve the reliability, scalability, maintainability, and overall architecture of customer-facing distributed services.Enhance connection establishment, authentication flows, routing, session behavior, and service performance for real-time communication workloads.Build robust observability through logs, metrics, dashboards, alerts, and operational tooling, including improved visibility into push notification delivery and integrations with APNs and FCM.Diagnose and resolve production issues across application services, networking layers, client connectivity, and infrastructure boundaries.Strengthen deployment processes, rollout safety, monitoring, and production readiness for distributed systems.Identify recurring customer and operational issues and translate them into durable engineering improvements.Collaborate with mobile, JavaScript, infrastructure, and other engineering teams to improve end-to-end system reliability.Contribute to architecture decisions, technical direction, and the continued evolution of backend systems supporting real-time communication products. Requirements Strong professional experience building and operating backend services in production, particularly within distributed or service-oriented architectures.Hands-on experience with Elixir or Erlang, or strong backend engineering expertise combined with the ability and willingness to learn Elixir quickly.Experience building or operating real-time, low-latency, or connection-oriented systems.Strong understanding of backend fundamentals, including authentication, service communication, session lifecycles, reliability, fault tolerance, and failure recovery.Demonstrated ownership of services across design, development, deployment, monitoring, troubleshooting, scaling, and ongoing improvement.Practical experience with Kubernetes, containers, CI/CD, and modern production infrastructure.Strong observability mindset, with experience using logging, metrics, dashboards, alerting, and root-cause analysis to improve service reliability.Good understanding of networking fundamentals and the ability to troubleshoot issues spanning software, networks, and infrastructure.Strong communication and collaboration skills, with the ability to work effectively across engineering disciplines and distributed teams.Experience with WebRTC, VoIP, voice/video communications, WebSockets, or other real-time communication technologies is highly valued.Familiarity with push notification infrastructure such as APNs or FCM, as well as DNS, edge routing, service discovery, or globally distributed systems, is advantageous.Experience developing diagnostic, observability, or troubleshoo