Complexio
9 months ago
Senior Full Stack Engineer
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Company information
- Company
- Complexio
- Location
- Polska Poland
- Posted
- 9 months ago
Job description
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
- Node.js 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.
Required skills
- react
- javascript
- typescript
- jest
- react testing library
- node.js
- ipc
- rest apis
- zustand
- components
- streaming
- hooks
- error handling
- eslint
- vite
- performance debugging
- event-driven systems
- component libraries
- vitest
- react query
- context
- preload
- ux instincts
- prompts
- modern tooling
- async flows
- llm-based features
- ai-driven ui
- electron apps
- main/renderer
- state libraries
- advanced typescript patterns
- generics
- mapped types
- react profiler
- bundle optimization
- radix/shadcn/ui
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