Senior Software Engineer

Senior Software Engineer | £800/day Inside IR35 | Contract | London – 3 Days Onsite

Industry: Commodity Trading

Location: London – 3 Days Onsite

Job Type: Contract

Our client is a global commodity trading organisation undergoing a major technology transformation focused on AI-driven engineering, operational automation and modernisation of legacy trading platforms. They are seeking a strong hands-on technologist to join a high-profile AI and agent-driven programme focused on automating support and engineering workflows across the trading technology estate, including EOS-related workflows.

This role is suited to engineers who enjoy solving complex technical problems, rebuilding legacy workflows using modern technologies and working across software engineering, cloud infrastructure and AI tooling.

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• Design and build scalable cloud-native applications and operational tooling.
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• Develop AI and agent-driven solutions to automate engineering and support workflows.
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• Build backend services, APIs and distributed systems.
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• Modernise legacy platforms using contemporary engineering practices.
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• Work across software engineering, infrastructure and platform initiatives.
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• Contribute to architecture, engineering standards and platform transformation projects.
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• Hands-on software engineering experience.
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• Strong experience with Python, C#/.NET, TypeScript or C++.
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• Strong AWS and cloud-native engineering experience.
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• Experience with Docker, Kubernetes and event-driven architectures.
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• Strong backend engineering and API development experience.
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• Experience building scalable distributed systems.
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• Strong engineering mindset with a passion for modern technologies and AI tooling.
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• Commodity trading, energy trading or ETRM exposure.
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• Experience with AI/LLM tooling including LangChain, Langfuse or Claude Code.
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• Experience modernising legacy systems and workflows.
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• Experience with React, Next.js, PostgreSQL, MongoDB or Kafka.
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