Complexio

Senior Full Stack Engineer

Complexio  •  Warsaw, PL (Onsite)  •  5 months ago
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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.
Complexio

About Complexio

Complexio is the intelligence layer for enterprise AI.

Our platform builds a connected understanding of your business so AI can act intelligently across people, processes and systems.

Enterprises have invested heavily in AI platforms, copilots and data lakes, yet daily work still depends on manual hand-offs and thousands of unseen tasks buried in emails, chats and spreadsheets. Complexio closes that automation gap, turning disconnected activity into actionable intelligence.

The Event Knowledge Graph continuously ingests structured and unstructured data to create a living, contextual map of how the enterprise truly works, revealing every task, interaction and dependency with full provenance and audit trails.

Built on this foundation, the Automated Automations Engine discovers, designs and executes workflows automatically. It unifies copilots, RPA and process-mining tools into a single closed-loop automation system where discovery, orchestration and execution happen continuously and autonomously.

Complexio is model-agnostic and deployed securely within your infrastructure. It can integrate with SAP, Microsoft, Oracle, IBM and OpenAI, transforming data lakes into action and organisational knowledge into measurable business outcomes.

Our mission is to redefine enterprise automation by enabling true collaboration between humans and machines, creating organisations that learn, adapt and execute as one intelligent system.

Industry
IT & Software
Company Size
51-200 employees
Headquarters
London, GB
Year Founded
Unknown
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