Our Values

Our values give you an insight into aur identity and culture. They are part of who we are, what we stand for and how we act. Everyone at InSite is encouraged to carry out their work with us according to our values:

Own The Outcome

At InSite, true success stems from every member of our team taking ownership of their responsibilities and driving outcomes.

Every participant is a leader in their own right. We create an environment where challenges are overcome, innovation thrives, and excellence becomes a habit.

With, Not For

We work with, not for, our clients.

Our approach goes beyond traditional client-vendor relationships fostering collaboration and mutual growth.

We align our expertise with our clients’ vision to achieve shared objectives, in a partnership built on trust and open communication.

Never Stop Learning

Our dedication to continuous improvement strengthens our ability to deliver high quality solutions.

InSite believe in the power of growth and development. ‘Never Stop Learning’ is our commitment to nurturing the talents and skills of our staff.

Benefits

InSite Technical Services are always on the lookout for experienced, knowledgeable and enthusiastic, designers, engineers and business support personnel to join our team. If you feel you would like to join a rapidly growing team; we welcome all CVs due to business growth.

Career Growth & Opportunity

Progressive career paths, exposure to varying projects, and development opportunities for all experience levels.

Learning & Professional Development

Ongoing investment in training, mentorship and chartership support from industry- experts so you’re always growing.

Competitive Rewards

A strong salary and benefits package that recognises your contribution and grows with your career.

Flexibility & Wellbeing

A culture that supports wellbeing and balance, with flexibility when needed and a strong focus on working together.

Work Environment & Location

A welcoming team culture and the opportunity to live and work in stunning Pembrokeshire.

Vacancies

Are you looking for a challenging and rewarding career in the energy sector? Look no further than InSite Technical Services! We are a company that values innovation, collaboration, and personal growth. Join our team of skilled professionals and help us provide excellent technical solutions to our clients.

With competitive salaries, opportunities for advancement, and a supportive work environment, InSite Technical Services is the perfect place to take your career to the next level. Apply now and become a part of our dynamic and dedicated team!

Principal Control & Instrumentation 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.

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.

Closing Date 4th October 2026

Key Responsibilities

Some of the main responsibilities of the Principal C&I Engineer will include:

  • 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.

This role offers the chance to work on varied, technically challenging projects across the energy and industrial sectors, with real responsibility and autonomy from an early stage. You’ll join a dynamic, growing consultancy where your voice is heard, your ideas matter, and your impact directly shapes both project outcomes and the wider team. It’s a collaborative, multidisciplinary environment that values technical expertise, supports professional development and Chartership, and provides clear opportunities to progress into discipline leadership. With flexible, non–clock-watching working practices, you’ll have the freedom to deliver your best work while maintaining a healthy balance.

About Us

InSite are a leading multi-discipline design engineering and consultancy company based in Pembroke Dock, West Wales. We deliver multi-discipline projects for major clients across the UK and Europe – from concept through to completion.

Recognised among Wales’s 50 fastest-growing businesses and as SME of the Year at the ECITB Awards, we are proud of our collaborative culture and commitment to technical excellence. Our success is driven by talented people who take pride in doing things well.

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.

Read more

Skills Required

  • 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.

Employee Benefits

  • Competitive Salary
  • Flexible Working
  • Free On-Site Parking
  • Excellent Employee Benefits package:
    • Enhanced Annual Leave, Sick Pay, Parental Leave
    • Medical Insurance (optional)
    • Life Insurance
    • Income Protection Insurance
    • Fantastic Pension
    • + more

Principal Mechanical & Piping Engineer

We are seeking a Principal Mechanical and Piping Engineer to join our expanding engineering and design consultancy. This role is central to delivering high-quality Mechanical and Piping design scope across a diverse portfolio of both single and multi-discipline 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.

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.

Closing Date 4th October 2026

Key Responsibilities

  • Lead and oversee the development, review and approval of mechanical and piping engineering deliverables, including design philosophies, specifications, datasheets, material requisitions, piping class specifications, line lists, equipment layouts, piping layouts, isometrics and associated engineering documentation.
  • Take technical authority for the mechanical and piping scope across projects, ensuring compliance with applicable industry codes, standards and client requirements, including ASME, API, BS EN and relevant pressure systems legislation.
  • Lead the design and specification of static and rotating equipment, piping systems, pressure vessels, storage tanks and associated mechanical infrastructure, ensuring safe, reliable, maintainable and cost-effective engineering solutions.
  • Review, verify and approve mechanical and piping engineering documentation to ensure technical accuracy, quality, consistency and compliance with project requirements, company procedures and relevant industry standards.
  • Develop and implement solutions to complex mechanical and piping engineering challenges, working collaboratively with process, electrical, control and structural disciplines, and leading discipline input to design reviews, constructability assessments and technical assurance activities.
  • Perform or oversee mechanical integrity assessments, piping stress evaluations, equipment selection, material specification and constructability reviews to ensure long-term asset reliability and operational performance.
  • Act as the principal mechanical and piping technical interface with clients, vendors, fabricators, contractors and other stakeholders, leading technical discussions, resolving complex engineering issues, clarifying requirements and supporting key project decisions.
  • Lead technical evaluations of vendor proposals, equipment packages and contractor deliverables, ensuring alignment with project specifications, operational requirements and lifecycle performance objectives.
  • Provide mentoring, guidance and technical coaching to junior and senior mechanical engineers and designers, fostering a culture of engineering excellence, safety, quality, compliance and continuous professional development within the Mechanical & Piping team.

About Us

InSite are a leading multi-discipline design engineering and consultancy company based in Pembroke Dock, West Wales. We deliver multi-discipline projects for major clients across the UK and Europe – from concept through to completion.

Recognised among Wales’s 50 fastest-growing businesses and as SME of the Year at the ECITB Awards, we are proud of our collaborative culture and commitment to technical excellence. Our success is driven by talented people who take pride in doing things well.

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.

Read more

Skills Required

We are looking for individuals who can bring the following skills and experience:

  • Experience of leading mechanical and/or piping deliverables in an EPC project environment, ideally from an engineering and design consultancy setting.
  • Have previously delivered design packages across Concept, FEED and Detailed Design for Oil & Gas, Energy, COMAH, Industrial, or similar projects.
  • Strong understanding of piping layout, routing and modelling with knowledge of relevant codes, standards and industry practices.
  • Comfortable coordinating with multidisciplinary design teams, and confident engaging with EPC contractors & owners / operators.
  • Brownfield or modification project exposure is an advantage.
  • Ideally, a Chartered Engineer working towards (IMechE ideal).
  • Reside locally to Pembrokeshire or be prepared to relocate, as this permanent role does not include travel expense coverage.

Employee Benefits

  • Competitive Salary
  • Flexible Working
  • Free On-Site Parking
  • Excellent Employee Benefits package:
    • Enhanced Annual Leave, Sick Pay, Parental Leave
    • Medical Insurance (optional)
    • Life Insurance
    • Income Protection Insurance
    • Fantastic Pension
    • + more

Application Form

Application Form

Please add your contact details, CV and any supporting documents below and we will be in touch.

Early Careers at InSite

Are you ready to embark on a career in Engineering, Project Management or Business Support?  Our Apprenticeship and Graduate schemes aim to lead you on a successful and fulfilling professional journey.

We embrace apprenticeships, mentorships, and encourage personal development.  Our graduate scheme is ECITB approved and is designed to meet the Engineering Council UL-Spec ensuring that your training supports you becoming chartered.

Work hard, learn on the job and grow professionally, but have fun along the way.  We are a pretty social bunch, so your time at InSite will be supportive, enriching and enjoyable.

At InSite every employee is allocated a Buddy and Mentor to support them as soon as they come aboard.  We are dedicated to nurturing talent and providing you with the support and professional development you need on your journey all the way up to becoming chartered.

Don’t miss out on this valuable opportunity to kickstart your career in engineering.

Our 2026 application process is now closed.