We are seeking an experienced Senior JavaScript Full-Stack Developer to build and evolve production web systems. You will deliver accessible, high-performance UIs and reliable JVM- and TypeScript-based services on cloud infrastructure. Apply to help shape and ship key platform capabilitiesResponsibilitiesDesign full-stack solutions that meet product needs with clear trade-offs and scalable patternsBuild TypeScript and React features with accessible UI patterns and strong client performanceDevelop backend services and shared libraries using Java or Kotlin on the JVM and TypeScript where appropriateImplement service-to-service communication using gRPC/protobuf and integrate APIsModel and evolve data in DynamoDB and PostgreSQL to support product features and reliabilityOperate effectively within AWS environments, containers, and CI/CD pipelines to ship safelyWrite and maintain unit, integration,
and end-to-end tests to protect quality and delivery speedCoordinate cross-team technical decisions and drive design reviews to align implementationsImprove observability and debuggability through structured logging and tracing practicesDocument architecture, interfaces, and operational guidance to support long-term ownershipRequirements3+ years of full-stack web engineering experience shipping production systemsProficiency in TypeScript and React, including state managementDeep knowledge of UI accessibility patterns and browser performance optimizationSolid backend skills in Java or Kotlin on the JVM, or TypeScript for shared librariesExtensive experience with gRPC + protobuf, and RESTHands-on data modeling experience with DynamoDB and PostgreSQLPractical cloud platform experience using AWS, containers, and CI/CD as a consumerRigorous testing discipline across unit, integration, and end-to-end testsExcellent collaboration and communication skills across teamsClear technical writing skills for designs and operational runbooksUpper-Intermediate English proficiency (B2)Nice to ha