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Senior Full-Stack Engineer

Fullstack Developer • Senior • Remote • Vollzeit Polen Polen

The company is hiring a strongly backend-leaning (approx. 80-85% backend) Senior Full-Stack Engineer to work on high-scale backend pipelines and data-heavy systems.

Responsibilities

  • Work on high-scale backend pipelines and data-heavy systems
  • Build production-grade ingestion and processing systems
  • Make architecture decisions based on real data volumes
  • Operate reliably in Kubernetes/AWS environments
  • Occasional frontend work (small UI tasks/new pages)
  • Core focus on backend systems design and implementation

Requirements

  • TypeScript + Node.js production experience
  • NestJS (strong preference, used as the main backend framework)
  • Strong experience designing backend systems at high scale: autoscaling, HA, performance, resilience, failure modes
  • Strong knowledge of event-driven systems: Kafka-based ingestion/streaming, producers/consumers, pipelines, batching concepts
  • PostgreSQL / SQL proficiency (schema modeling, query optimization)
  • Kafka hands-on experience (preferred)
  • Redis working knowledge
  • Experience working in AWS + Kubernetes environments in production
  • Practical experience with logs, metrics, tracing to monitor and debug production systems

Nice to have

  • Security domain familiarity (application security / runtime protection / vulnerability management) - advantage, not mandatory
  • Prior work in data-intensive security platforms or similar high-scale systems

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