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Observability and security for teams that love open source.
Senior Full Stack Developer
Location
Poland
Posted
126 days ago
Salary
0
Seniority
Senior
Job Description
Senior Full Stack Developer
Logz.io
• Own and deliver complex features end-to-end across frontend and backend, from design through production • Drive architectural decisions in a large-scale TypeScript monorepo with 20+ services, shared packages, and a custom UI component library • Build rich, interactive interfaces with React, TanStack ecosystem (Router, Query, Table), and a design system built on modern CSS-in-JS • Design and implement backend services and BFF APIs using Node.js and Express • Work with real-time data systems: OpenSearch queries, WebSocket streams, Server-Sent Events, and large-scale log/metric pipelines • Optimize performance across the stack: bundle sizes, render cycles, query efficiency, and service response times • Leverage AI-powered development tools to accelerate your workflow and help shape how the team adopts them • Collaborate cross-functionally with product managers, designers, platform engineers, and data teams to shape the product direction • Participate in code reviews and uphold engineering quality standards across the codebase
Job Requirements
- 5+ years of professional full-stack development experience
- Deep proficiency in React and TypeScript in production environments—not tutorial-level, production-level
- Strong backend experience with Node.js and Express
- Experience working in large-scale monorepos (Nx, Yarn/npm Workspaces, Lerna, or similar).
- Solid understanding of RESTful API design, BFF patterns, and service-oriented architectures
- Experience with modern build tooling—Vite, esbuild, SWC, or equivalent
- Strong testing discipline: unit testing with Jest and Testing Library, and familiarity with E2E testing (Puppeteer, Playwright, or Cypress)
- Experience with Docker and containerized development/deployment workflows
- Active use of AI/LLM tools in your development workflow—code generation, debugging, code review, documentation, or architecture exploration. This isn't a nice-to-have; it's how we work
- Comfort with the terminal, shell scripting, and developer tooling—you don't need a GUI to be productive
- Proven ability to own features end-to-end: scoping, building, testing, deploying, and monitoring
- Strong communication skills in English—written and verbal.
Benefits
- Health insurance
- Professional development opportunities
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