Frontend Engineer
TESTSupplier
London, United Kingdom
Duration
3
MONTHS
£500
-
£550
Per Day
(GBR)
Ref
testsupplier-68565
Starts
ASAP
Opened On
26/03/2025
Required Skills
typescript
javascript
node.js
user experience
web infrastructure
backend
trading
digital assets
innovation
xss
Job Description

Frontend Engineer – Trading Platforms & User Portals

Location: London (Hybrid with flexibility)

Type: Full-time | Sponsorship and relocation support available

My client is a high-growth algorithmic trading firm at the forefront of the digital assets market. Founded in 2017, they have successfully navigated multiple industry cycles by combining the engineering precision of high-frequency trading firms with the agility and innovation of tech startups.

To my client, digital assets are more than just another asset class — they represent a transformational shift in financial infrastructure. With a long-term vision and a commitment to regulatory compliance, they’re building the future of trading through cutting-edge technology.

The Role

My client is seeking a Frontend Engineer with a passion for crafting high-quality, intuitive applications that users genuinely enjoy. In this role, you’ll play a key part in developing both internal trading tools and external-facing portals, while working closely with experienced developers and traders. This is a unique opportunity to contribute to systems that directly impact trading operations while helping shape the overall product experience from the ground up.

You’ll gain early responsibility, creative autonomy, and rapid learning opportunities — perfect for someone who enjoys fast-paced, high-impact environments.

What You’ll Work On

Build and enhance frontend applications for new trading products, client-facing portals, and internal trading tools

Oversee frontend development for the corporate website and associated project management

Collaborate across teams including product, marketing, trading, and engineering to ensure consistency and performance

Play a key role in defining the user experience across multiple stages of the customer lifecycle

Get exposure to algorithmic crypto trading and broader system architecture

Experience with both personal and professional projects is welcome — an interest in algorithmic trading is a plus.

Required Skills & Experience

5+ years of frontend development experience

Experience working on client-facing financial or professional services products is a plus (please share examples of products and their target users)

Proficient with modern frontend tech stack:

JavaScript, TypeScript, Node.js, npm

Frameworks such as React (portfolio/examples encouraged)

Solid understanding of web infrastructure: CDN, Cloudflare, and web server architecture

Knowledge of frontend security best practices, including common vulnerabilities (XSS, CSRF, OWASP risks) and how to mitigate them

Familiarity with frontend-backend integration (e.g., AJAX, asynchronous data handling)

Ability to develop responsive and user-friendly layouts across devices

What You’ll Get

Join one of the most innovative trading firms in the world

Projects with accelerated ownership and responsibility compared to traditional finance roles

A dynamic team culture with regular meals, gaming nights, holiday celebrations, and annual company retreats

A fully equipped central London office with amenities like table tennis, foosball, free snacks, and custom desk setups

Informal, ambitious, and collaborative company culture with a professional startup vibe

Performance-based compensation with strong earning potential, plus private health insurance and pension benefits

Additional Details

Not fully remote: While full remote work isn’t supported, my client offers significant flexibility in working from home and hours

UK work permits and relocation support are available for qualified candidates