Senior Frontend Engineer (React, TypeScript)

Foxtek Netherlands
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AI Summary

Join a small team in Amsterdam building high-performance real-time trading platforms with React and TypeScript. This is a performance-critical frontend role requiring ownership, autonomy, and trust. The ideal candidate has strong React fundamentals, TypeScript fluency, and a focus on pragmatism, simplicity, and speed.

Key Highlights
Performance-critical frontend engineering for a globally scaled crypto platform
Building high-performance real-time UIs with React and TypeScript
Managing complex state and streaming data cleanly
Key Responsibilities
Building high-performance real-time React UIs
Working deeply with React and TypeScript
Managing complex state and streaming data cleanly
Technical Skills Required
React TypeScript Node.js React Native
Benefits & Perks
Competitive salary
Long-term security
Flexible working
Work abroad options
30% ruling
Visa and relocation support
Nice to Have
Node.js exposure
React Native
Interest in trading/finance/crypto

Job Description


Real-Time Trading | React + TypeScript | Amsterdam (Hybrid)


Build performance-critical, real-time frontend systems used daily by professional traders worldwide.


This is not a design-led UI role.

This is milliseconds, data, state, and correctness under pressure.


You’ll join a small, senior engineering team working on the trading platform of a globally scaled crypto platform - recently acquired by a major US exchange, bringing long-term stability and serious ambition.


🚀 Why this role

  • Frontend where performance actually matters
  • Real-time data, high-frequency updates, real consequences
  • Senior team: ownership, autonomy, trust
  • Strong engineering culture (AI tools encouraged)
  • Flexible working + work abroad options
  • Competitive salary + long-term security


🧠 What you’ll be doing

  • Building high-performance, real-time React UIs
  • Working deeply with React + TypeScript (types matter here)
  • Managing complex state and streaming data cleanly
  • Making pragmatic decisions — clarity over over-engineering
  • Collaborating closely with backend & product
  • Continuously improving performance, reliability, and DX


✅ What we’re looking for (important)

  • Strong React fundamentals (architecture, state, rendering)
  • TypeScript fluency — you care about correctness and intent
  • Comfortable reasoning about performance and trade-offs
  • Able to structure solutions quickly without over-engineering
  • Experience owning problems end-to-end in small teams


This role rewards engineers who think before they code, validate assumptions, and keep solutions simple and fast.


➕ Nice to have

  • Node.js exposure
  • React Native
  • Interest in trading / finance / crypto
  • Experience with complex, data-heavy UIs


🧩 Mindset fit

  • Pragmatic, calm under pressure
  • Cares about types, state, and data semantics
  • Ships, iterates, improves
  • Comfortable saying “let’s pause and reassess”
  • Positive about AI-assisted development


📦 Package

  • Contract → Permanent (12 months initial)
  • €80,000 – €100,000 + benefits
  • Hybrid: 3 days Amsterdam / 2 remote
  • Work abroad: up to 60 days per 6 months
  • Visa & relocation supported
  • 30% ruling supported


🧪 Interview process (transparent)

  • 3 stages total
  • Mix of practical and conversational
  • Focus on real-world engineering, not trivia
  • Live coding includes:
  • Setting up a React project from scratch
  • Reasoning about types, state, and performance


#FrontendEngineering #SeniorFrontend #ReactJobs #TypeScript #WebEngineering


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