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<h2>Systems&nbsp;&amp; Site Engineer</h2><ul><li>One Big Circle – Derby</li><li>Full-Time 37.5 hours over 5 Days</li><li>Up to £55k dependent on experience&nbsp;</li></ul>About One Big CircleBe part of an award-winning workplace: The Sunday Times Best Medium-sized Technology Company 2025Formed 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 SummaryThis is a hands-on, site-based engineering role working physically on trains and in rail environments. The role requires regular travel to live rail sites across the UK and physical installation and maintenance work on rolling stock.We are looking for an Engineer to join our Site Team, carrying out hands-on installation, commissioning, and maintenance work directly on trains predominantly out of our Derby production facility with occasional nationwide visits.This is a practical, physically active role involving regular work on rolling stock, in depots, sidings, and other rail environments. You will be installing, commissioning, and maintaining advanced onboard systems including machine-vision cameras, laser measurement systems, thermal sensors, embedded Linux devices, IP networking, and GPS/4G/5G equipment.The role requires confidence working in operational rail environments, secure or restricted sites, and following strict safety procedures. Previous rail industry experience is strongly preferred.Responsibilities:<ul><li>Liaise with clients to understand and help plan timings for site-based activities.</li><li>Plan work, risk assessments, and method statements.</li><li>Contribute to design, building, configuring, and testing systems.</li><li>Install and commission systems that have been tested in our production facilities.</li><li>Independently carry out work on-site in a safety-conscious and professional manner.</li><li>Build relationships with key on-site personnel.</li><li>Communicate proactively with other team members to troubleshoot problems and create solutions.</li><li>Create and maintain technical and test documentation.</li><li>Work with our Business Development team to carry out unit/location surveys for potential new projects and installs.</li><li>Ensure tools, materials, and work areas are kept organised and safe.</li><li>Follow health &amp; safety procedures and contribute to a safe working environment.</li><li>Report faults, hazards, and incidents to the supervisor/manager.</li><li>Support other site operations as required.</li></ul>Personal Qualities and Experience<ul><li>Self-motivated, reliable, and hands-on with a positive, proactive approach</li><li>Strong communication, organisational, and problem-solving skills</li><li>Effective under pressure with the ability to multitask and prioritise work</li><li>Flexible and adaptable, with meticulous attention to detail when required</li><li>Team player with strong written and verbal communication skills, including documentation/specification writing</li><li>Safety-conscious, responsible, and punctual</li><li>Able to carry out the physical aspects of the role, including manual handling, working on and around rolling stock, and spending extended periods on site, with reasonable adjustments where applicable.</li><li>Experience delivering projects in an industrial environment; rail industry experience and certification desirable</li><li>A UK driving licence, along with flexibility to travel to sites across the UK, is essential for this role.</li></ul>Company Benefits Include:<ul><li>Auto enrolment Pension Scheme</li><li>25 Days Holiday plus bank holidays</li><li>Life Assurance</li><li>Private Healthcare Cover</li><li>Work related training courses as required</li><li>Communal working area plus dedicated desk space</li><li>Significant investments made to create an engaging and enjoyable work environment for this primarily office-based role</li><li>Access to Bike to Work Scheme</li><li>Secure bike storage and shower facilities</li><li>Social events</li></ul>You would be a valued part of a fast growing team where your ideas and opinions are valued as we continue the exciting journey of One Big Circle.Successful candidates will need to pass a BPSS (Baseline Personnel Security Standard) check as part of the onboarding process.How to applyInterested candidates should submit their CV and a covering letter via email by clicking the 'Apply' button.

One Big Circle

Site & Systems Engineer

Your role, and what you’ll be doing:The Senior Design Engineer will own deliverables through specification development, development and deployment of SCADA and control system solutions, setting technical direction and continually refining engineering best practice.You will play a key role in shaping system architectures, functionality design and first-in-type solutions, driving reuse and where appropriate while also leading the creation of new, modular components where the solution demands it. The role spans the full engineering lifecycle - from early concept and bid support through detailed design, development, integration and delivery.This position suits an engineer who is technically credible, systems-minded, comfortable leading others, and being hands-on.What will be my Responsibilities?<ul><li>Deliver engineering activities for complex multi‑discipline systems, owning technical outcomes and ensuring solutions meet customer, safety and compliance requirements.</li><li>Deliver system designs, interfaces and integration strategies that are robust, scalable and aligned to project and operational needs.</li><li>Drive core systems engineering activities including the principles of reuse, requirements definition, decomposition, traceability, verification and validation.</li><li>Provide technical leadership across the engineering lifecycle - guiding engineers, assuring deliverables and shaping safe, secure and compliant solutions.</li><li>Apply the right standards, processes and governance to maintain engineering quality, configuration control, and design assurance.</li><li>Collaborate closely with internal teams, suppliers, SMEs and customers to resolve issues, manage risks and deliver successful project outcomes.</li></ul>&nbsp;What Skills, Qualifications and Experience do I need for this role?<ul><li>Proven experience delivering complex control and monitoring systems across domains such as Power SCADA, Station Information/M&amp;E supervisory systems, Tunnel Ventilation Control, or Route‑Wide Engineering Management Systems.&nbsp;</li><li>Strong technical competency in industrial control platforms, including hands‑on experience with A8000 RTUs, Siemens S7 PLCs, TIA Portal, and the integration of PLC/RTU‑based systems with field devices and networks.&nbsp;</li><li>Practical expertise with modern SCADA platforms, ideally WinCC OA, covering data modelling, architecture, system configuration, and multi‑system interface design.&nbsp;</li><li>Robust systems engineering capability—requirements capture and decomposition, architecture definition, interface control, integration planning, and full V‑lifecycle verification &amp; validation.&nbsp;</li><li>Demonstrable technical leadership at a senior/CRE‑equivalent level, providing design assurance, making engineering decisions, managing change and configuration, and delivering solutions in safety‑critical or mission‑critical environments.&nbsp;</li><li>Experience developing novel or first‑of‑type solutions, applying sound engineering judgement, risk management, and adherence to standards, processes and engineering governance.&nbsp;</li><li>Degree in a relevant engineering discipline (Electrical, Electronic, Control, Systems, or similar), with Chartered Engineer status (or working toward it), and excellent communication, problem‑solving and stakeholder engagement skills.</li></ul>&nbsp;

MPI Limited - Rail

Senior Design Engineer (SCADA)

We have an exciting opportunity to join our client as a Lead Project Engineer in CIS within their Rail Infrastructure business.As a Lead Project Engineer, you will take ownership of the engineering delivery for defined work packages across one or more projects.&nbsp;You will ensure engineering requirements, standards, safety obligations, and customer expectations are fully met throughout the delivery lifecycle.You will often act as the Project Engineering Manager (PEM) on medium‑scale projects or lead engineering packages on larger programmes, coordinating multi‑disciplinary inputs, managing technical risk and ensuring robust integration, testing and assurance.&nbsp;This role is pivotal in the successful delivery of our CIS (Communications &amp; Information Systems) solutions.Daily Tasks will include:&nbsp; Leading the engineering delivery of work packages or serving as PEM on medium projects, ensuring scope, schedule, quality, cost, and safety objectives are achieved. Developing, maintaining, and executing the Project Engineering Management Plan (PEMP), tailoring engineering governance to project complexity.Driving engineering lifecycle activities: requirements capture, system design, integration, testing, V&amp;V, and commissioning readiness. Ensuring all engineering work complies with relevant standards, processes, technical specifications, and safety obligations (CDM/CSM). Coordinating technical interfaces across disciplines, suppliers, and subcontractors, ensuring “right first time” integration. Acting as the engineering representative to the PM, client, suppliers, and internal teams, ensuring consistent communication of requirements, changes, and engineering status.Requirements:&nbsp; Degree in Electrical, Electronic, Systems, or related Engineering discipline (or equivalent experience). Strong engineering delivery experience in SCADA, SISS, Control Systems, or large-scale integration projects. Proven capability delivering across the full engineering lifecycle; requirements, design, integration, test, V&amp;V, and commissioning. Experience acting as Work Package Manager, technical lead, or PEM on scoped project elements. Strong understanding of rail infrastructure environments, construction/installation constraints, and operational railway practices and the ability to demonstrate managing requirements, configuration, change, and engineering assurance processes effectively Background in multi-discipline environments such as SCADA, SISS, control systems, telecoms, M&amp;E, or line-wide system integration and software-intensive systems (desirable)&nbsp;

Lead Project Engineer (Communications & Information Systems)

Job Title 
 
 Contractor's Engineering Manager (CEM) - Telecoms / Software-Focused Systems 
 
 Contract Details 
 
 Contract Length: Minimum 9 months 
 
 IR35 Status: Outside IR35 
 
 Start Date: ASAP 
 
 Location: Predominantly remote with occasional travel to Cheadle, Stockport 
 
 Overview 
 
 An experienced Contractor's Engineering Manager (CEM) is required to take over an existing role due to retirement. The role supports a rail-based programme currently at GRIP 6, entering SIT/SAT testing, and centres on an Online Key Management System (OKMS). 
 
 The OKMS is a software-based, cyber-secure telecoms system used by train drivers to log into operational systems. While the solution has strong software and cyber-security elements, this is not a pure software role. A telecoms engineering background is essential. Civils or signalling-only backgrounds are unlikely to be suitable. 
 
 The OKMS scope represents approximately 40-50% of the workload; however, candidates with a strong telecoms background will be able to support the role full time. 
 
 Key Responsibilities 
 CEM Role &amp; Engineering Management 
 
 Act as Contractor's Engineering Manager, coordinating all engineering activities in line with the project programme and GRIP lifecycle 
 
 Coordinate design and documentation deliverables to Network Rail 
 
 Review and sign off all documentation submitted to Network Rail from delivery partners 
 
 Manage and coordinate responses to Design Review Notes (DRNs), ensuring timely closure or document updates formally accepted by Network Rail 
 
 Coordinate As-Built documentation where required 
 
 Provide all required documentation for the Network Rail Health &amp; Safety File, agreeing formats with Network Rail 
 
 Provide IDC/IDR Certificates for GRIP stages 5, 6 and 7 (and 8 if required) 
 
 Provide Engineering Completion Certificates (ECC) 
 
 Documentation &amp; Authoring 
 
 Update and maintain the System Definition 
 
 Update the Service Interface Register (SIR) with input from DDaT stakeholders 
 
 Produce HSM performance reports to support NRAP Product Approval (templates provided) 
 
 Maintain document control via JIRA, SharePoint and OneDrive 
 
 Assurance, Safety &amp; Compliance 
 
 Coordinate with TÜV (Independent Auditor) regarding Subset compliance reports 
 
 Respond to auditor queries and provide supporting evidence as required 
 
 Ensure progress towards compliance with applicable subsets, supporting independent assurance for handover 
 
 Support completion and acceptance of SIT/SAT Safety Letter 
 
 Run checks on outstanding LDO actions prior to certification sign-off 
 
 Governance, Reporting &amp; Meetings 
 
 Attend: 
 
 Monthly Network Rail Contract Review meetings 
 
 Monthly Human Factors Working Group meetings 
 
 Chair: 
 
 Twice-weekly Engineering Delivery meetings 
 
 Monthly Security Working Group meetings, reviewing security documentation, residual risks and emerging issues 
 
 Reporting: 
 
 Provide a monthly metrics pack 
 
 Provide a monthly technical debt report 
 
 Security &amp; PSO Awareness 
 
 Maintain awareness of project security classifications, procedures and controls 
 
 Identify, manage and escalate any security breaches promptly 
 
 Support updates to security briefings and alignment with current organisational security marking systems 
 
 Consult and adhere to Network Rail security correspondence and requirements 
 
 Tools &amp; Systems 
 
 Obtain and use access to the following systems: 
 
 Network Rail eB (document control and DRN status) 
 
 Network Rail Standards Portal 
 
 Network Rail Teams 
 
 JIRA (document control and WPM) 
 
 SharePoint / OneDrive (OKMS documentation) 
 
 Project Environment 
 
 The CEM will work closely with a multi-organisation delivery team including project management, service delivery, safety assurance, systems engineering, architecture, and security specialists. 
 
 Essential Requirements 
 
 CEM Certification (mandatory) 
 
 Strong telecoms engineering background 
 
 Experience delivering software-based, cyber-secure systems within regulated environments 
 
 Proven experience working through GRIP stages, particularly GRIP 5-7 
 
 Experience with IDC/IDR, ECC, DRNs, and Network Rail governance processes 
 
 Ability to manage multiple stakeholders and suppliers 
 
 Comforta

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