Lead Frontend Engineer

🕒 July 28

🇬🇧 United Kingdom – Remote

⏰ Full Time

🟠 Senior

💻 Frontend Engineer / Web Developer

👻 Ghost score 27%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Reactive Markets

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2019

💳 Fintech

🤝 B2B

💸 Finance

Fintech • B2B • Finance

Reactive Markets is a financial infrastructure company that provides ultra-low-latency connectivity and execution for institutional trading across FX, equities and other asset classes. Its network connects clients to 35+ liquidity providers with deterministic sub-50 microsecond end-to-end latency, accessible via a single API, UI, or integrations with EMS/OMS/pricing engines. The platform is engineered for bilateral trading, systematic and manual strategies, and offers real-time latency reporting, analytics, global deployment (New York, London, Singapore), and FCA-regulated services for professional market participants.

📋 Description

• Driving the technical direction of the frontend application stack — architecture, standards, and the trade-offs that keep the platform fast and maintainable • Hands-on TypeScript and Rust — building and reviewing the most critical or complex work yourself • Real-time, data-dense trading interfaces across FX, Equities, and Cryptocurrency, and the application services behind them • Owning code quality across the team through review, design sessions, and the standards you set and enforce • Developing the engineers on the team — technical craft and the non-coding skills that let people scale • Shaping the roadmap with the CTO, CDO, Technical Delivery, and Client facing teams, and turning priorities into delivered software • Ensuring the team owns its Level 3 support, observability, and operational readiness — reliability is not optional

🎯 Requirements

• Strong full-stack engineering background with deep TypeScript / JavaScript (ES6+) (5+ years, including time leading or setting technical direction for a team) • Familiarity with React and reactive state management (RX, MobX, or similar) • Working knowledge of Rust, or the clear appetite and ability to get there — it's part of our stack • Solid grasp of distributed systems, API design, and real-time data (REST, WebSockets, network protocols) — you understand what it takes to build software that's fast and reliable under load • Able to make and defend architectural decisions, and explain the trade-offs to engineers and non-technical stakeholders alike • Experience in financial services or trading technology.

🏖️ Benefits

• up to 30 days leave + bank holidays • private health insurance • pension • life insurance • dental/optical cashback • cycle to work • socials and offsites