Principal Engineer

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Full job description

Kevel is seeking a mid-level full-time remote engineer to join the Delivery team responsible for maintaining and enhancing the core ad serving platform. The role involves modernizing high-throughput, latency-sensitive distributed systems, improving platform scalability, reliability, security, and performance, and developing new features in collaboration with product management. Candidates must have experience with distributed systems in cloud environments, backend programming (preferably Clojure, Rust, Node.js, Java, Kotlin, Scala, or JVM languages), latency-sensitive system design, HTTP APIs, databases, and be comfortable with on-call rotations. Preferred skills include AWS/GCP, infrastructure as code tools, event streaming, observability, and testing improvements. Nice to have are ad serving and real-time decisioning experience, functional programming, legacy system modernization, and multi-region service support. Benefits include 100% remote work, flexible hours, comprehensive health coverage, retirement plans, unlimited PTO, paid holidays, annual retreats, home office stipend, parental leave support, and a news subscription allowance. Applicants must be legally eligible to work in Hungary, Portugal, or Spain.