Senior Frontend Engineer Engineering · London ·

Sparta Commodities SA.; United Kingdom; Remote; GBP 50,000 - 90,000; Full time

Job description

Hi, we’re Sparta Commodities!

Sparta is the next generation platform of financial data, information and insight for trading. Our mission is to digitise the commodity trading market and become the leading platform for traders and analysts in all commodities verticals. Built for traders by traders, our technology pulls together real time market data and adds insight and advanced analysis to enable traders to make better decisions, faster and with more conviction.

Following impressive market traction and financial backing from Venture Investors, we’re on a path to scale globally. It’s a great time to join us, and we have a fantastic opportunity available for a driven Lead Front End Engineer to join our Engineering organisation.

This is a great career opportunity for an experienced, delivery-focused leader to play a key role in shaping the company culture as it moves from start-up to scale-up.

We are looking for someone who has had ownership of projects from inception until after release, and who is familiar with observability, product metrics, and maintainability.

Day-to-day, you will work hands-on within a product team mentoring other engineers, reviewing code and documentation, and promoting initiatives to improve our code quality, maintainability, and development experience.

We have a Front End guild with members from all product teams to lead the architectural evolution of the website. You will be one of the guild leaders, responsible for reviewing proposals from other guild members.

About You

• 4+ years of experience in a hands-on Technical Leadership role (Tech Lead, Engineering Manager, Staff or equivalent)
• Extensive experience with React building complex enterprise applications
• A body of work in design systems
• High ownership and accountability for projects
• Experience with Jest, Mocha or other common testing libs
• High communication skills in a remote-first company with a diverse workforce

Bonus Points

• NextJS or similar
• Knowledge of server-side rendering techniques and architectures
• Experience with cypress for e2e tests
• Prior work on real-time systems such as WebSockets, stock tickers, or videogames
• Experience and prior work with Redux
• Having developed or extended a dashboarding platform

What’s the culture like at Sparta?

At Sparta, our culture is not just a set of values written on a wall—it's a way of life. We embrace a dynamic environment where initiative is celebrated, challenges are met head-on, and innovation thrives.

We're building an environment where our employees thrive and excel in their work. Our aim is for every member of our team to take pride in their contributions. You'll collaborate with like-minded individuals who are passionate about our mission and deeply committed to crafting outstanding products and achieving success for our customers.

We operate flexibly, understanding that a thriving, profitable company isn't just about being in the same location. We build our relationships through effective remote work methods and carefully planned in-person meet-ups.

Our values:

• Just own it: At Sparta, accountability is not just a buzzword- it’s a way of life. We believe in taking ownership of our work, challenges, and successes. When you join us, you’re not just an employee- you’re a stakeholder, driving our collective success through a mindset of ownership.
• Don’t get too comfortable: Innovation thrives in discomfort. Embrace change, seek new challenges, push your boundaries. Growth and success lie beyond the comfort zone.
• Ask for forgiveness, not permission: we value initiative and boldness. Take calculated risks, be proactive, don’t be afraid to make decisions. Learning from mistakes is as important as celebrating achievements.
• Put the customer at the heart of every action: customer satisfaction isn’t just a goal- it’s our guiding principle. We go the extra mile to understand and meet customer needs.
• Stay hungry, yet humble: ambition fuels progress, and humility keeps us grounded. Stay hungry for knowledge, achievements, and growth, but never lose sight of the importance of empathy and gratitude.
• Collaborate and challenge: great ideas emerge when diverse groups of minds come together. Collaboration is more than just teamwork- it’s the fusion of different perspectives, challenging norms and collectively achieving greatness.

Sparta Commodities is proud to be an equal opportunity employer and promotes diversity within its workforce. We are determined that suitably qualified persons will never receive less favourable treatment on the grounds of gender, age, disability, religion, belief, sexual orientation, marital status, race, veteran status or any other basis covered by appropriate law.