Senior Front Office Software Engineer

Castleton Commodities International; Johnstone; On-site; GBP 45,000 - 65,000; Full time

Job summary

A global energy trading company in Scotland is seeking a talented individual to optimize trading processes and build Python-based services. The ideal candidate will have strong expertise in Python, SQL, and familiarity with DevOps practices. Join a team dedicated to innovating technology solutions in a high-performance trading environment. Competitive benefits and a commitment to employee wellness are provided.

Benefits

Competitive medical and dental benefits

Tuition assistance & reimbursement

Employee wellness programs

Volunteering days

Quarterly awards

Qualifications

• Strong professional experience with Python and deep understanding of object-oriented programming.
• Advanced knowledge of SQL and relational database technologies.
• Familiarity with DevOps practices, including Docker and cloud-native deployments.
• Experience in Linux and Windows environments.
• Ability to communicate effectively across technical and non-technical audiences.

Responsibilities

• Partner directly with commercial trading teams to engineer and optimize trading processes.
• Build and maintain Python-based services and APIs using modern frameworks.
• Design cloud-native tools that integrate into our Front Office platform.

Skills

Python

SQL

DevOps practices

Linux

Windows

AWS

Snowflake technologies

Problem-solving skills

Communication skills

Tools

Docker

Job description

Castleton Commodities International (www.cci.com) is redefining how data and technology drive the future of global energy trading. Our Data Science & Technology team designs powerful systems and innovative tools that help front-office teams understand market behavior, forecast price movements, and manage risk more effectively. With a commitment to excellence and a modern, open-source technology stack, we solve complex, high-impact challenges at scale using cloud-native infrastructure, machine learning platforms, real-time analytics, custom APIs, and internal libraries.

If you’re looking to build cutting-edge solutions in a high-performance trading environment, we’d love to hear from you. Apply today and take the next step in your technology career at CCI!

What You Build

• Partner directly with commercial trading teams to engineer and optimize trading processes and analytical models.
• Build and maintain Python-based services and APIs using modern frameworks and best-in-class design patterns.
• Design and develop solutions to support supply and demand models, market data analysis, and position management.
• Design cloud-native tools that integrate seamlessly into our Front Office platform, including visualization and analytics interfaces.

What You Bring

• Strong professional experience with Python and deep understanding of object-oriented programming.
• Advanced knowledge of SQL and relational database technologies.
• Familiarity with DevOps practices, including Docker and cloud-native deployments.
• Experience in Linux and Windows environments.
• Exposure to AWS and Snowflake technologies is highly desirable.
• Prior experience in energy or commodities trading is a major plus.
• Ability to communicate effectively across technical and non-technical audiences.
• Strong attention to detail, problem-solving skills, and a passion for technology innovation.

Employee Programs & Benefits

• Competitive comprehensive medical, dental, retirement and life insurance benefits
• Employee assistance & wellness programs
• Parental and family leave policies
• CCI in the Community: Each office has a Charity Committee and employees are allocated 2 days annually to volunteer at selected charities
• Charitable contribution match program
• Tuition assistance & reimbursement
• Quarterly Innovation & Collaboration Awards
• Employee discount program, including access to fitness facilities
• Competitive paid time off
• Continued learning opportunities

Visit https://www.cci.com/careers/life-at-cci/ to learn more!

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