Senior / Principal Systems Engineer

Salary £40 - £65k depending on experience

About One Big Circle

Be part of an award-winning workplace: The Sunday Times Best Medium-sized Technology Company 2025

Formed in 2017, One Big Circle is a fast-growing Bristol technology company that provides “Intelligent Video” solutions. We focus entirely on solving real-world industry problems by fusing new technology in the field of Video, IOT, Cloud and AI providing end to end solutions which allow our customers to dramatically improve their operational efficiency and safety. Our culture is one of high-quality technical delivery and we work at a speed that many industries are unaccustomed to; we have done this by building a team dynamic that challenges and empowers our people and creating an environment where everyone contributes and learns. We are growing, profitable and have ambitious plans to continue expansion in and beyond our existing markets.

We are looking for a proactive and motivated individual to join our team to support the business in further growing our flagship award-winning product: AIVR. AIVR (Automated Intelligent Video Review) is a state-of-the-art video technology system used by thousands of people in the rail industry. AIVR has won dozens of awards and is recognised as the market leading solution, but we are building many more opportunities both in existing and new markets which will further accelerate our growth.

We have built a culture where people feel supported, included, and empowered to do their best work. Our team is growing, and we’d love for you to be part of the journey.

Role Summary

We are looking for an experienced Senior or Principal Systems Engineer to be involved in the projects we complete from specification, design, test & build and commissioning.

You will be working on projects primarily destined for the railway environment, as well as other national infrastructure. These systems might typically consist of technology such as line scanning and machine vision cameras, lighting, laser measurement systems, thermal sensors, industrial embedded Linux, IP networking, GPS/4G/5G. The ideal candidate will hold a broad fundamental understanding of integrating and fault finding this type of equipment.

Responsibilities

• Deliver solutions on new and existing projects, ensuring compliance to project requirements, budget and timelines.
• Identify and mitigate technical project risks.
• Take ownership of complex technical problems.
• Carry out research in order to make well informed technical decisions.
• Communicate proactively with other team members to provide encouragement, identify problems, create solutions and unblock technical issues.
• Build relationships with key external stakeholders.
• Testing and fault finding.
• Create and maintain technical and test documentation.

Personal Qualities

• Self-motivated with strong communication and organisational skills.
• Effective working under pressure.
• Strong delivery-focused work ethic, with the ability to multitask and ensure priority work is completed on time.
• Flexible and adaptable style of approach but with meticulous and systematic attention to detail when it matters.

Experience

• 5+ years experience delivering projects in an industrial environment.
• Ideally a background/experience in the rail Industry including certification.
• Ideally hold a UK Driving license and willingness to drive to various UK site locations.

Company Benefits Include

• Work related training courses as required
• Complimentary snacks and refreshments including fresh fruit
• Access to Bike to Work Scheme
• Secure bike storage and shower facilities

How to Apply

Join an award-winning team, named ‘The Sunday Times Best Medium-sized Technology Company 2025’. At One Big Circle, you’ll be part of a fast-growing team where your ideas and contributions are truly valued.

Please send your CV and covering letter to jobs@onebigcircle.co.uk. Find out more about us at www.onebigcircle.co.uk.

Successful applicants will be required to pass a BPSS (Baseline Personnel Security Standard) check.

By applying for this role, you understand that we will process your personal information in accordance with our privacy policy, accessible at https://onebigcircle.co.uk/privacy-policy/

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