Senior Software Engineer (London)

Direct message the job poster from Harrington Starr

Senior Front-End Developer – Energy Trading

Central London (3 days on-site)

You'll be working on a cutting-edge post-trade platform within the energy trading space – think live intraday PnL, position management, and digitised workflows for one of the most dynamic trading businesses in Europe. It’s a hybrid environment with React or Svelte at the core and AWS powering the infrastructure. You'll work alongside high-calibre devs and tech leads pushing scalable, secure, real-time trading systems.

What you’ll be doing:

• Building UI features for a real-time energy trading platform
• Developing clean, scalable code in React or Svelte (daily hands-on coding)
• Collaborating across dev, cloud, infra and trading desks to shape architecture
• Contributing to the CI/CD pipeline and DevOps best practices
• Delivering secure, high-performing apps that support front office workflows
• Influencing technical design and tooling strategy

What you’ll need:

• 7+ years hands-on front-end experience (React or Svelte essential)
• Recent experience in commodities or financial services trading (essential)
• Strong exposure to AWS (S3, ECS, AppSync preferred)
• Familiarity with REST/GraphQL, Kafka, PostgreSQL or similar
• Comfortable working in Agile squads with a DevOps-first mindset
• Bonus if you can work in Python, but not essential

If you’re a front-end expert who wants to build performant, business-critical platforms in a fast-paced trading floor environment, this contract will be right for you!.

Everyone matters here:

• We promote an inclusive, supportive environment for all genders
• We’re committed to creating a workplace where everyone feels welcome and valued
• We actively support gender diversity and inclusion at every level
• We foster a culture of work-life balance and equal opportunity

To apply – click the link or for a faster response, email Barry.Ansell@HarringtonStarr.com

• Seniority level
  Mid-Senior level

• Employment type
  Contract

• Job function
  Finance, Information Technology, and Consulting
• Industries
  Financial Services, Investment Banking, and IT Services and IT Consulting

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