Senior Fullstack Engineer (BE focused/Java)

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AdaptiqEndpoint Security
PolandFull-TimeSenior
Salary not disclosed
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Job Details

Experience
10+ years
Required Skills
PostgreSQLJavaKafkaKubernetesTypeScriptClickhousegRPCReact

Requirements

  • 10+ years of experience building production-grade backend systems.
  • Strong expertise in Java, distributed architectures, and scalable data-processing systems.
  • Hands-on experience with Kafka and event-driven streaming architectures.
  • Practical experience with Apache Flink or another stream-processing framework.
  • Strong experience with PostgreSQL and ClickHouse, including query optimization and indexing.
  • Experience with gRPC, Protobuf, and high-volume, low-latency data processing.
  • Experience implementing RBAC, permission models, and multi-tenant architectures.
  • Experience developing frontend applications with TypeScript and React.
  • Strong hands-on experience with AI coding agents.
  • Familiarity with CI/CD, Docker, Kubernetes, and observability in production environments.

Responsibilities

  • Develop scalable backend services and APIs using Java, TypeScript, gRPC, and Protobuf.
  • Develop and maintain event-driven pipelines using Kafka, stream-processing technologies, PostgreSQL, ClickHouse, and Redis.
  • Write, analyze, and tune complex SQL queries to improve database performance.
  • Develop and enhance frontend features using TypeScript and React.
  • Build and maintain features related to employees, devices, and role-based access control (RBAC).
  • Improve the platform's scalability, reliability, performance, observability, and cost efficiency.
  • Investigate and resolve production issues to eliminate bottlenecks.
  • Own features end-to-end, from technical design and implementation to production delivery.
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