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Principal Full Stack Developer with React

Fullstack Developer • Senior • Remote • Full-time Croatia Croatia

Principal, full-ownership full-stack engineering role leading complex projects end to end - from problem definition through architecture, delivery, and post-release monitoring - at a behavioral analytics and insider risk platform.

Responsibilities

  • Lead complex projects from problem definition through architecture, delivery, and post-release monitoring
  • Set technical standards: API contracts, data models, multi-tenant boundaries, performance targets, migration plans
  • Shape how the team plans, reviews, tests, releases, and responds to incidents
  • Grow engineers through code review, pairing, design feedback, and 1:1s
  • Build full-stack features across React frontends, NestJS/GraphQL backend, and PostgreSQL/ClickHouse data layers
  • Build fast UIs and dashboards that stay responsive under real-time data load
  • Build secure integrations (BI engine, ML prediction engine, LLMs, billing, SSO, third-party APIs) with strict auth and tenant isolation
  • Investigate production issues and lead incident response across NextGen and legacy systems

Requirements

  • 10+ years full-stack experience, including 4+ years with React
  • Strong backend skills: NestJS/Express, GraphQL, PostgreSQL, Docker, Node
  • System design judgment: CQRS, event sourcing, distributed systems, multi-tenancy
  • Track record leading both projects and people: owning delivery, running reviews, setting standards, growing engineers
  • Real ownership of quality, security, and reliability
  • Clear written and spoken English
  • Ability to work well fully remote with little supervision

Nice to have

  • Real-time visualizations or analytics dashboards (d3, AG Grid, Plotly)
  • Experience with behavioral data, event streams, or time-series analysis
  • Production experience with ML- or LLM-powered features
  • Shipped on-prem/self-hosted to enterprise, not just SaaS
  • DevOps/CI-CD depth (Docker, Ansible, release pipelines)
  • Tech lead or engineering management experience

Soft skills

Real ownership mindsetMentoring attitudeSelf-directed with little supervision

About the company

Teramind is building a predictive, AI-driven approach to protecting organizations' people, data, and operations - a global leader in user behavior analytics, insider risk management, and workforce intelligence, remote since 2014.

Languages: Angol: Felsőfok

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