Senior Full Stack Engineer

7 dni temu

Warszawa, Mazovia, Polska Complexio Pełny etat 60 000 zł - 120 000 zł rocznie

At Complexio, we're building the intelligence layer for enterprise AI—automatically creating a

connected understanding of an organisation's people, processes and systems, and turning

that into real-time automation and insight. Our platform ingests structured and unstructured

data, constructs a living Event Knowledge Graph, and orchestrates multiple AI models to

uncover hidden workflow opportunities and drive autonomous action.

As a Senior Frontend Full Stack Engineer, you will join us at an exciting inflection point: you'll

help shape the way thousands of enterprise-users engage with our platform. You'll work with

a team of software engineers, data scientists, product experts and business analysts to craft

next-generation web applications and user experiences that bring our powerful automation

engine to life. Your role will be foundational in translating data-rich insights into intuitive,

performant, and scalable interfaces - bridging the gap between advanced AI infrastructure

and real-world business impact.

If you are passionate about working at the intersection of rich front-end engineering,

full-stack product delivery and enterprise AI innovation, and you thrive in a fast-moving,

deeply technical team, then we'd love to hear from you.

Requirements

Must-Haves

  • React + TypeScript (advanced)

  • Strong JavaScript fundamentals (async, modules, performance)

  • Experience with Vite, ESLint, modern tooling
  • Building scalable UI with components, hooks, and context
  • Integrating with REST APIs, async flows, error handling
  • Writing maintainable code + strong code review skills
  • Familiar with LLM-based features (streaming, prompts, AI-driven UI)
  • Testing with Vitest/Jest + React Testing Library
  • Good UX instincts & ability to work independently
  • Must-Haves if we consider full-stack, nice to have for frontend
  • Python backend familiarity (FastAPI/async I/O, API contracts)

Nice-to-Haves
- Experience with Electron apps (main/renderer, preload, IPC)
- React Query / Zustand or other state libraries
- Advanced TypeScript patterns (generics, mapped types)
- Performance debugging (React Profiler, bundle optimization)
- Knowledge of Radix/shadcn/ui or similar component libraries
- fundamentals
- Event- driven systems familiarity

Benefits
  • Join a pioneering joint venture at the intersection of AI and industry transformation.
  • Work with a diverse and collaborative team of experts from various disciplines.
  • Opportunity for professional growth and continuous learning in a dynamic field.

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