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Senior Frontend Engineer

Sparta Commodities logo

Spain only
Sparta Commodities

Job Description

Hey, we're Sparta Commodities!

We are a Swiss, VC-backed scaleup with a global reach. Our mission is to digitize the commodity trading market and become the leading platform for traders in all commodities verticals. We've already gained significant market traction and are financially backed by Venture Investors.

We have a fantastic opportunity available for a driven and passionate Senior Frontend Engineer to join our growing Engineering team, based remotely in Spain or the UK. This is a great career opportunity for an experienced and delivery-focused Senior Frontend Engineer to play a key role in the development and maintenance of various front-end systems, including an Excel plug in, for a leading and highly regarded business.

About The Team

Our naturally diverse teams are divided into verticals, with a mix of multidisciplinary members. Each team has at least 3 Backend Engineers, 3 Frontend Engineers, a Designer, a QA Engineer, a Product Owner, and a Team Manager. We work on bi-weekly sprints with quarterly goals. Each project is kicked off by a product request, from which we build a technical proposal that is refined within the team. Once the project has been greenlit one team member becomes its owner. An owner follows the project through development and deployment, making the other team member accountable for their responsibilities.

About The Tech

We have a modern React website built using the latest Vite, using libraries such as Redux and SWR. Our Components are designed around Material UI and styled with SASS. We have plenty of financial data to graph in charts, for which we have extended chartjs. Our designers share Figma wireframes with beautiful adaptive designs.

But our use of web technologies isn’t limited to frontend. We share parts of our code with a Node backend. And we've also ventured into using TypeScript to develop Excel Add-Ins.

In 2023 we doubled our website's screen count, with intentions to sextuple it by late 2024. We will also start serving dynamic content, migrating from the client-only experience we have today.

About You

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. They will be involved in the design of technical solutions as owner and implementor, on top of reviewing designs from other team members.

On your day-to-day, you will work within the team reviewing code, and promoting initiatives to improve our code quality, maintainability, and development experience. As part of the development sprints, you will release new features and products using quality practices such as automated testing, QA validation, and monitorization.


  • Ownership and accountability for projects and their product metrics
  • Extensive experience with React
  • Knowledge of server-side rendering techniques and architectures
  • A body of work in design systems
  • 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
  • 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

Benefits and Perks

  • Remote working, with occasional travel to a central hub for collaborative meetings and coordination.
  • Attractive company stock option plan.
  • Yearly companywide meet ups in sunny locations.
  • Training and education budget.
  • Private Medical Insurance.
  • Access to the optimal gear suited for your position.

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 remotely, 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.

Sparta Commodities is proud to be an equal opportunity employer and promotes diversity within its workforce. As an international business, 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.

*Note for agencies- Please do not call or email any member of the Sparta team. All correspondence regarding interest in future partnerships should be directed to [email protected]. Thank you for your understanding*

Advice from our career coach

Sparta Commodities, a Swiss scaleup revolutionizing the commodity trading market, is seeking a Senior Frontend Engineer to join their dynamic team. As the owner of projects, you'll work with a diverse team using modern technologies like React, Vite, and TypeScript to develop cutting-edge solutions. With remote work, stock options, yearly meetups, and a focus on innovation, Sparta offers a culture where your contributions are valued and celebrated. If you're ready to thrive in a collaborative, forward-thinking environment, Sparta Commodities welcomes you with open arms.

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About the job

Feb 21, 2024


Spain only

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