Reactive Markets
Senior Frontend Engineer
Remote role where the employee must remain based in a particular country.
United Kingdom only
Employer listed it 2 weeks ago · Added yesterday
Been open since 2 weeks ago, still being checked, but it has been live a while.
Salary
Not stated
Location
United Kingdom only
Timezone
GMT
Contract
Full-time
Experience
Senior
Category
Software
This employer didn't state pay. Jobs like this usually pay around $170k–$225k a year, a typical range taken from 597 senior-level software roles on Nomaders that do state pay. It's a guide, not an offer.
Remote flexibility
Work from home
This is a remote role, but the employee must be based in United Kingdom. It is work from home rather than work from anywhere.
What the employer says
- Source listing states candidate location: "Remote, UK, Remote"
- Job description states: "UK-based"
What Nomaders makes of it
- Payroll and tax are likely handled in that country only
The quotes above are the employer's own words; the reading is ours. Always check the original listing and employment terms before working from another country.
About the role
Senior Frontend Engineer
Remote (UK-based) | Full-Time
About Us
Reactive Markets is the 2026 OTC Trading Platform of the Year ( Risk.net ). Our network handles over $50 billion in daily trading volumes across FX, Equities, and Cryptocurrency, connecting 40+ of the world's leading liquidity providers.
We build trading systems that operate at the edge of what's technically possible — where nanoseconds matter and a dropped message costs real money. Our engineering team is small, senior, and deeply invested in the craft of building cutting edge, reliable, high-performance systems.
The Role
We're looking for a senior full-stack engineer to build the trading platform our clients use every day. Despite the "frontend" name, this is not a UI-only role — our Frontend team works across the whole application stack in TypeScript and Rust, from the trader-facing interfaces down to the services behind them. It's distinct from our Backend team, who own the low-latency C++/Go trading engine.
This is a senior individual contributor role for someone who takes on the hardest problems and delivers them under their own steam. You'll own complex, ambiguous, performance-critical work end-to-end — designed, built, tested, deployed, and supported in production. You lead through code, craft, and mentoring, setting the technical example the rest of the team calibrates to. This is not a role where you write code and throw it over a wall: our engineers own the full lifecycle, and when something breaks, you're part of the team that investigates and fixes it.
Occasional hours outside the normal working day are required for production releases, scheduled maintenance windows, and Level 3 support during critical incidents. We keep this to a minimum and recognise the commitment — but owning a production trading platform means being there when it matters.
What You'll Work On
Complex full-stack features in TypeScript and Rust — from trader-facing interfaces to the application services behind them
Real-time market-data presentation and high-throughput, low-latency application code across FX, Equities, and Cryptocurrency
React and reactive state management (RX, MobX, or similar) for demanding, data-dense trading interfaces
Distributed systems and real-time data over REST, WebSockets, and network protocols
Architecture and solution design for the hardest technical problems the team faces
Observability and monitoring — dashboards, alerting, and metrics that make frontend behaviour visible
Production systems that handle real money — reliability is not optional
What We Need
Technical:
Strong full-stack engineering ability with deep TypeScript / JavaScript (ES6+) (5+ years)
Solid experience 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
Strong grasp of distributed systems, API design, and real-time data (REST, WebSockets, network protocols such as TCP/UDP and binary protocols)
Comfortable reasoning about architecture and making defensible technical trade-offs
Requirements
The employer hasn't listed requirements separately, they're described in the role summary above and on the original listing.
Benefits
No benefits package published with this listing. Ask about it at first interview.
How to apply
- 1Check the flexibility label above, work from home, matches where you plan to live and work.
- 2Tailor your CV to the role at Reactive Markets, mentioning your remote working experience and working hours (GMT).
- 3Apply directly on the employer's careers page using the button below. Nomaders never handles your application.
Found 2d ago. Last checked today. Always confirm the details on the original posting, salary and location can change after publication.
Listing sourced from Company boards.
Similar roles
Other open software roles with comparable remote rules.
Free to apply, no account needed.
Typically $170k to $225k per year · You'll be taken to the employer's careers page.