InSite Technical Services
Principal Control & Instrumentation Engineer
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About Insite
InSite Technical Services Limited (InSite), part of Vulcain Engineering Group, is a UK-based engineering consultancy with an international footprint, delivering expert engineering design, project management, and technical support across a range of energy and industrial sectors.
With a strong track record in the oil refining, terminals, LNG, and renewables industries, InSite combines its specialist expertise with the scale, capability and global reach of the Vulcain group to help clients meet the challenges of the energy transition and deliver projects that support a more sustainable future.
Our team of experienced engineers and designers bring technical expertise and industry insight to every project, offering value, assurance, and innovative thinking from concept to execution. InSite specialises in conceptualising, designing, and supporting projects that have a lasting, positive impact on the world of tomorrow.
The Position: Principal Control & Instrumentation (C&I) Engineer
We are seeking a Principal Control & Instrumentation Engineer to join our expanding engineering and design consultancy. This role is central to delivering high-quality C&I design and functional safety scope across a diverse portfolio of industrial and energy projects.
This role is ideal for an experienced engineer who can lead projects, work seamlessly within a multidisciplinary environment, and engage confidently with clients, vendors, and internal teams.
Main Responsibilities
- Lead and oversee the development of C&I deliverables including philosophies, specifications, datasheets, instrument schedules, I/O lists, control narratives and related engineering documentation.
- Take responsibility for the functional safety scope across projects (IEC 61511), including HAZID/HAZOP participation, LOPA studies, SIL determination and verification, SRS development, and functional safety assessments and lifecycle documentation.
- Lead or oversee control system design including PLC, DCS and SCADA system architectures, and provide expert input on cybersecurity considerations (IEC 62443 awareness desirable).
- Review and approve engineering documents and deliverables for accuracy, integrity, and compliance with relevant standards, ensuring high-quality C&I output.
- Develop technical solutions to complex C&I challenges, interfacing effectively with electrical, mechanical, and process teams and supporting discipline contributions to design reviews and technical checkpoints.
- Define scope, deliverables and resource requirements for C&I work packages, providing accurate input to schedules, estimating, risk identification and change management.
- Act as the primary C&I technical interface for clients, vendors and integrators, leading technical discussions, clarifying requirements, resolving queries, and supporting project decision-making.
- Provide mentoring, guidance and technical coaching to junior and mid-level engineers, promoting strong engineering quality, safety, compliance and competency development within the C&I team.
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Preferred Profile
- Degree in Control & Instrumentation Engineering, Electrical Engineering or similar (HNC/HND or relevant experience also considered).
- Extensive experience in C&I detailed design within energy, industrial or process sectors - ideally oil & gas (downstream/refining).
- Working knowledge of PLC, DCS and SCADA architectures, including specification, industrial instrumentation, control loop design and system design.
- Proven ability to lead technically, communicate clearly and represent the consultancy confidently to clients, vendors and integrators.
- Experience with system integration, commissioning, FAT/SAT or site support, with an understanding of industrial networks and cybersecurity principles.
- Functional safety experience (IEC 61511) - e.g. HAZOP/LOPA, SIL determination/verification, SRS or lifecycle deliverables - highly desirable but not essential.
- TUV Functional Safety Engineer (or similar certification) and/or machinery safety experience considered advantageous.
- Chartered Engineer status desirable (or working toward), with experience in a consultancy environment beneficial.
- Reside locally to Pembroke or be prepared to relocate, as this permanent role does not include travel expense coverage.
Please note many of our UK projects require high-level security clearance meaning that visa sponsorship is not guaranteed and is assessed on a case-by-case basis, depending on role criticality and project needs.
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Remuneration & Benefits
We offer a competitive salary tailored to your experience and background. Whether you're earlier in your career or bring more senior-level expertise, we encourage you to apply if this role aligns with your skills, or if you're open to discussing other opportunities within our business and wider Vulcain Engineering Group.
We also offer a benefits package, both standard and enhanced, which is designed to support your wellbeing, development, and financial future, including:
- Annual Leave + Bank Holidays
- Pension Scheme (10% employer contribution)
- Life Insurance and long-term sickness cover
- Medical cover and Employee Assistance Programme (EAP)
- Maternity, Paternity Leave
- Cycle to Work Scheme
- Training & Development, including additional qualifications and accreditations relevant to your role
Why Join Us?
At InSite, we offer exciting career opportunities for people at every stage - from apprentices and graduates to seasoned professionals.
We’re proud to provide a competitive reward package, flexible working options and generous holiday allowance - because your work/life balance matters.
Join our friendly team in beautiful Pembrokeshire, West Wales, and build a fulfilling career with real responsibility, growth and impact.
If you enjoy tackling challenges and solving problems, you’ll find opportunities to grow your career, stay motivated, and thrive in a dynamic, collaborative environment.
Equal Opportunities
Insite Technical Services is an equal opportunities employer. We are committed to creating a diverse and inclusive workplace where everyone is valued and respected. We welcome applications from all individuals, regardless of background, and do not discriminate based on age, gender, disability, ethnicity, religion, sexual orientation, or any other protected characteristic.
If you require any reasonable adjustments during the recruitment process, please let us know, and we will be happy to accommodate your needs.
We appreciate every application. However, due to the volume we receive, we’re only able to contact candidates who are shortlisted for this role or who may be a strong fit for future opportunities.
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