Frontend Developer (React)

iO Associates; Bristol; On-site; GBP 45,000 - 55,000; Full time

Job summary

A leading energy trading firm in Bristol is seeking a Frontend Developer with expertise in React to design and maintain trading interfaces. The successful candidate will work alongside Traders and Data Scientists in a collaborative environment. This role offers a competitive salary of up to £55,000, generous benefits, and significant learning opportunities.

Benefits

Private Medical

Dental

Life Assurance

Cycle to Work

30 days holiday

Qualifications

• Strong JavaScript skills and modern front-end development experience.
• Proven experience building UI with React.
• Solid HTML/CSS and familiarity with frameworks like Tailwind.

Responsibilities

• Design, build, and maintain powerful trading interfaces.
• Work closely with Traders and Data Scientists.
• Modernise the tech stack away from legacy architecture.

Skills

JavaScript

React

HTML/CSS

Git

Collaboration with Traders

Tools

Remix

SQL

AWS

Job description

Overview

Title: Frontend Developer (React)

Salary: Up to £55,000

Location: Bristol (On-site)

Are you a talented Front-End Developer looking to build innovative tools that have a real impact on the UK's transition to renewable energy?

I'm working with a market-leading energy trading firm that's playing a key role in helping balance the Grid and support decarbonisation. With a strong presence in the UK and European power markets, they operate in a fast-moving environment where technology and real-time insight drive trading decisions.

Responsibilities

The Opportunity

You'll join their front-end engineering team to design, build, and maintain powerful trading interfaces used directly by Traders and Data Scientists. These tools provide real-time visibility of market movements, enabling the business to act quickly and effectively.

The company is also modernising its stack, moving away from legacy architecture and adopting Remix, keeping their front-end clean, efficient, and future-ready!

👩💻 Tech Stack & Skills We're Looking For

• Strong JavaScript skills and modern front-end development experience

• Proven experience building UI with Reactjs

• Solid HTML/CSS and familiarity with frameworks like Tailwind

• Experience with Git and collaborative workflows

• Confident working closely with Traders, Data Scientists and other Engineers

• Based in or able to commute to Bristol (5 days a week, on-site)

Nice to Have

• Experience with Remix or other modern JS frameworks

• SQL knowledge

• Exposure to UX design, AWS or working alongside data teams (Python/R)

Why Join?

• Highly competitive salary + generous benefits (Private Medical, Dental, Life Assurance, Cycle to Work, etc.)

• 30 days holiday + bank holidays

• Huge learning opportunities with direct access to senior leadership

• Work with one of the most successful energy trading teams in the UK & EU

• Regular company socials and a collaborative, high-performing culture

Our client has a 2 stage interview process and for the right candidate they will interview early next week!

If this role sounds of interest to you or someone you know, then please apply to this advert and contact a. methula@io associates.co. uk