Senior Front-End Engineer (Xora Portfolio Company)

We are an early-stage deep-tech company operating in stealth. Our mission is to build a next-generation platform that unifies AI, computational modeling, and advanced R&D workflows for some of the most demanding scientific and industrial environments. The stakes are high. The problems are real. The impact is global.

We are looking for a senior front-end engineer who can operate at the founding-team level. Someone who understands that great engineering is a force multiplier and that clarity in design is essential when users depend on precision and trust.

What You Will Lead

Interface Architecture for a Complex Technical Platform

You will define and implement the core user experience for a platform that orchestrates sophisticated workflows across AI, simulation, and data systems.

End-to-End Ownership of the Front-End Stack

This includes:

• Modern component architecture using strict TypeScript
• State management for dynamic, interactive graphs and real-time data
• High-performance rendering of large and complex datasets
• Clean integration with backend APIs and workflow runtimes

Experience for Technical and Scientific Users

You will turn intricate processes into intuitive interfaces that help users design, launch, and track multi-step workflows with complete transparency and reproducibility.

Cross-Functional Collaboration

You will work closely with engineering, AI, and scientific teams to convert domain knowledge into clean abstractions and robust product surfaces.

What Exceptional Looks Like

• You think several layers above UI
• You design systems that stay coherent as complexity scales
• You bring discipline to architecture and velocity to execution
• You write code that others can safely build on
• You are comfortable in ambiguous early-stage environments where initiative is expected, not requested

Responsibilities

• Lead development of our front-end framework using React or Svelte with a focus on strict TypeScript implementation
• Architect and build graph-based workflow editors that handle complex interactivity (panning, zooming, node connection)
• Implement high-performance data visualizations using d3.js, maintaining 60fps performance even with streaming data
• Design secure authentication and session management flows using JWT and modern security best practices
• Optimize client-side performance for scientific calculations, utilizing Web Workers to offload heavy computation from the main thread
• Establish front-end standards, automated testing practices, and long-term architectural guidelines
• Partner with backend engineers to define clean, stable API contracts and real-time data synchronisation strategies

Required Experience

• 5+ years of experience building and shipping production-grade front-ends for data-intensive applications
• Deep mastery of TypeScript and modern UI frameworks (React or Svelte)
• Proven experience building complex, interactive visualizations using d3.js or similar libraries (Canvas/WebGL experience is a strong plus)
• Demonstrated ability to handle complex state management outside of standard framework hooks (e.g., experience with Zustand, MobX, XState, or similar)
• Experience handling real-time data streams (WebSockets, SSE) and optimizing UI updates for high-frequency data
• Strong understanding of client-side security, specifically regarding JWT handling and storage
• Strong architectural thinking and comfort working in early-stage environments

Good to Have

• Experience with Canvas API or WebGL for rendering large-scale scientific datasets
• Background in building node-based editors or visual programming tools (using libraries like ReactFlow or building custom solutions)
• Exposure to scientific computing, distributed systems, or workflow engines
• Familiarity with Rust or WASM for high-performance client-side modules
• Strong product sensibility and the ability to influence UX direction for expert users

Why Join?

You will join a small, mission-driven team working on a platform that demands both technical excellence and creative thinking. Your work will shape the foundations of a product category that has not existed before. You will have broad ownership, real influence, and the ability to define front-end architecture from day one.

If you want to build something fundamental, and you want your engineering to have truth, rigor, and lasting impact, this is the right place.