5,835 Vessel Engineer jobs in the United Kingdom

NES Fircroft are looking for a Graduate Engineer who will join our clients offshore engineering team aboard a vessel that operates stimulation activities for the Energy industry. This is an exciting opportunity for a recent graduate to kickstart their career in offshore stimulation operations, working alongside experienced professionals in a hands-on environment.

Open to UK or EU Passport Holders.

Rotation: You will work 28 days offshore, then receive 28 days off work. 

Responsibilities:

• Conduct fluid testing and material QA/QC in vessel laboratories
• Support stimulation operations and reporting
• Assist with R&D, fluid development, and vessel improvement projects
• Maintain HSEQ standards and comply with Ecotoc regulations
• Operate and maintain lab equipment and software (e.g., STIMPLAN – desirable but not essential)
• Cover duties of Vessel Stimulation Engineer when required

Experience Required:

1. Time spent in a lab environment would be desirable
2. Aware of the concepts of fracture design
3. Relevant Engineering Degree
4. UK or EU passport required

With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.

NES Fircroft are looking for a Graduate Engineer who will join our clients offshore engineering team aboard a vessel that operates stimulation activities for the Energy industry. This is an exciting opportunity for a recent graduate to kickstart their career in offshore stimulation operations, working alongside experienced professionals in a hands-on environment.

Open to UK or EU Passport Holders.

Rotation: You will work 28 days offshore, then receive 28 days off work. 

Responsibilities:

• Conduct fluid testing and material QA/QC in vessel laboratories
• Support stimulation operations and reporting
• Assist with R&D, fluid development, and vessel improvement projects
• Maintain HSEQ standards and comply with Ecotoc regulations
• Operate and maintain lab equipment and software (e.g., STIMPLAN – desirable but not essential)
• Cover duties of Vessel Stimulation Engineer when required

Experience Required:

1. Time spent in a lab environment would be desirable
2. Aware of the concepts of fracture design
3. Relevant Engineering Degree
4. UK or EU passport required

With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.

Job Title: Mechanical Engineer / Senior Mechanical Engineer (MEP Team)

Location: Plymouth, England, United Kingdom

Hours: Full-Time, 37.5 hours per week

Salary: Competitive + Benefits

Industry: Engineering – Building Services

Job Level: Mid to Senior-level

Job Status / Category: Engineering – Mechanical / MEP

We are seeking an experienced Mechanical / Senior Mechanical Engineer to join our growing MEP (Building Services) team in Plymouth.

This is an exciting opportunity to work on large-scale, sustainable building projects across multiple sectors including commercial, residential, heritage, and industrial. You will lead the day-to-day technical delivery of mechanical design services, oversee high-quality design outputs, and mentor junior team members, contributing to their professional development.

You will work in a collaborative environment, delivering intelligent, sustainable designs that support our clients’ net-zero ambitions and enhance the built environment.

Key Responsibilities:

·    Lead mechanical design services on multi-disciplinary building projects.

·    Produce and review design deliverables including specifications, drawings, and schedules.

·    Oversee technical quality and ensure compliance with project requirements.

·    Support commercial success through invoicing, WIP management, and resource planning.

·    Mentor junior engineers, graduates, and apprentices, fostering career development.

·    Collaborate with architects, multidisciplinary teams, and clients to deliver innovative solutions.

·    Apply BIM processes and Revit software for design production and coordination.

Required Skills:

·    Proven experience as a Mechanical or Senior Mechanical Engineer in the UK.

·    Strong understanding of mechanical systems and MEP solutions across varied building sectors.

·    Experience with BIM processes and tools, including Revit.

·    Collaborative mindset with excellent communication and teamwork skills.

·    Ability to mentor and guide junior engineers.

·    Strong problem-solving and project management capabilities.

Educational Qualification:

·    HNC, HND, Bachelor’s, or Master’s degree in Mechanical Engineering or Building Services Engineering .

·    Chartered status (or working towards it) preferred.

·    Relevant professional certifications advantageous.

What’s In It For You:

·    Competitive salary

·    Professional development and support for career progression

·    Flexible working and work-life balance

·    Private medical insurance and benefits package

·    Collaborative, supportive office environment with global consultancy resources

How to Apply:

Please send your updated CV to at your earliest convenience.

Note: This position is open only to candidates currently residing in the UK.

If you are a skilled Mechanical Engineer or Senior Mechanical Engineer looking to deliver innovative, sustainable MEP solutions in a collaborative environment, we’d love to hear from you.

Job title: Senior/Principal Platform Systems Mechanical Engineer

Location: Barrow-in-Furness. This position will require a full-time presence on-site

Salary: Competitive

What you’ll be doing:

• Developing the package of design evidence required to justify a safe, effective design and generate customer confidence in the design solution

• Specifying and assisting in the build of prototypes, products and systems suitable for testing

• Providing timely corrective actions on all assigned defects and issues

• Ensuring that commitments are agreed, reviewed and met

• Mentoring junior engineers regarding technical matters

• Making presentations effectively to technical and management audiences and within this, be able to identify and keep abreast of novel technical concepts and markets

• Author/co-author technical reports, papers, articles, patents and presentations as required

Your skills and experiences:

• Educated to degree level in Engineering, Mechanical or Science subjects

• Be able to design documentation with the ability to present these to customers and wider groups

• Have the ability to solve complex engineering calculations

• Be proficient in CAD, MS Office and be comfortable with other IT applications

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The Mechanical Platform Systems team:

Being part of a team, you will have a great opportunity to be involved in the planning and reactive support to ensure that the engineering aspects of testing and commissioning activities are undertaken in a safe and appropriate way whilst ensuring design intent are maintained. It’s a fantastic opportunity to be a part of some of our most complex projects to date and to have great opportunity career development. We offer relocation support across all Submarine roles, subject to meeting eligibility criteria

Why BAE Systems?

This is a place where you will be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically leave 5 to 10 years of continuous residency in the UK depending in the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 10^th October 2025

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

#LI-MS1

#LI-Onsite

Job Title: Lead Mechanical Engineer – Air Purification Systems

Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role.

Salary: Competitive

What you’ll be doing:

• Design of Air Purification and Atmosphere Monitoring systems, sub-systems and equipment for the next generation Royal Navy submarines

• Undertake functional design activities, modelling and analysis

• Produce design documentation, Verification & Validation evidence and safety justifications

• Support specification qualification and procurement of components, working collaboratively with suppliers

• Engaging with stakeholders across the cross-functional project team

• Driving engineering governance through peer reviews and design reviews

Your skills and experiences:

Essential:

• Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO₂ removal, O₂ generation, trace contaminant management, radiological hazards) – ideally in complex, safety-critical environments (e.g. maritime, aerospace, defence, nuclear, oil & gas and sub-sea)

• Proven capability in system lifecycle delivery – from concept through to commissioning

• Demonstrated leadership – either through technical direction, mentoring, or project ownership

• Chartered engineer or working towards professional accreditation

Desirable:

• Knowledge of platform-level constraints such as noise, shock, or survivability

• Previous experience integrating purification systems with submarine life-support, HVAC, and emergency protocols

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The team:

As a Lead Mechanical Engineer – Air Purification Systems, you will play a pivotal role in the design and development of submarine Air Purification and Atmosphere Monitoring systems. This includes system-level design, technical leadership, supplier engagement, and the opportunity to steer design architecture across a major submarine programme. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria.

Why BAE Systems?

This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 31^st October 2025

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

#LI-MS1

#LI-Hybrid

Job Title: Lead Mechanical Engineer – Air Purification Systems

Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role.

Salary: Competitive

What you’ll be doing:

• Design of Air Purification and Atmosphere Monitoring systems, sub-systems and equipment for the next generation Royal Navy submarines

• Undertake functional design activities, modelling and analysis

• Produce design documentation, Verification & Validation evidence and safety justifications

• Support specification qualification and procurement of components, working collaboratively with suppliers

• Engaging with stakeholders across the cross-functional project team

• Driving engineering governance through peer reviews and design reviews

Your skills and experiences:

Essential:

• Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO₂ removal, O₂ generation, trace contaminant management, radiological hazards) – ideally in complex, safety-critical environments (e.g. maritime, aerospace, defence, nuclear, oil & gas and sub-sea)

• Proven capability in system lifecycle delivery – from concept through to commissioning

• Demonstrated leadership – either through technical direction, mentoring, or project ownership

• Chartered engineer or working towards professional accreditation

Desirable:

• Knowledge of platform-level constraints such as noise, shock, or survivability

• Previous experience integrating purification systems with submarine life-support, HVAC, and emergency protocols

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The team:

As a Lead Mechanical Engineer – Air Purification Systems, you will play a pivotal role in the design and development of submarine Air Purification and Atmosphere Monitoring systems. This includes system-level design, technical leadership, supplier engagement, and the opportunity to steer design architecture across a major submarine programme. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria.

Why BAE Systems?

This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 31^st October 2025

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

#LI-MS1

#LI-Hybrid

Job title: Senior/Principal Platform Systems Mechanical Engineer

Location: Barrow-in-Furness. This position will require a full-time presence on-site

Salary: Competitive

What you’ll be doing:

• Developing the package of design evidence required to justify a safe, effective design and generate customer confidence in the design solution

• Specifying and assisting in the build of prototypes, products and systems suitable for testing

• Providing timely corrective actions on all assigned defects and issues

• Ensuring that commitments are agreed, reviewed and met

• Mentoring junior engineers regarding technical matters

• Making presentations effectively to technical and management audiences and within this, be able to identify and keep abreast of novel technical concepts and markets

• Author/co-author technical reports, papers, articles, patents and presentations as required

Your skills and experiences:

• Educated to degree level in Engineering, Mechanical or Science subjects

• Be able to design documentation with the ability to present these to customers and wider groups

• Have the ability to solve complex engineering calculations

• Be proficient in CAD, MS Office and be comfortable with other IT applications

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The Mechanical Platform Systems team:

Being part of a team, you will have a great opportunity to be involved in the planning and reactive support to ensure that the engineering aspects of testing and commissioning activities are undertaken in a safe and appropriate way whilst ensuring design intent are maintained. It’s a fantastic opportunity to be a part of some of our most complex projects to date and to have great opportunity career development. We offer relocation support across all Submarine roles, subject to meeting eligibility criteria

Why BAE Systems?

This is a place where you will be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically leave 5 to 10 years of continuous residency in the UK depending in the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 10^th October 2025

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

#LI-MS1

#LI-Onsite

Job title: Senior/Principal Platform Systems Mechanical Engineer

Location: Barrow-in-Furness. This position will require a full-time presence on-site

Salary: Competitive

What you’ll be doing:

• Developing the package of design evidence required to justify a safe, effective design and generate customer confidence in the design solution

• Specifying and assisting in the build of prototypes, products and systems suitable for testing

• Providing timely corrective actions on all assigned defects and issues

• Ensuring that commitments are agreed, reviewed and met

• Mentoring junior engineers regarding technical matters

• Making presentations effectively to technical and management audiences and within this, be able to identify and keep abreast of novel technical concepts and markets

• Author/co-author technical reports, papers, articles, patents and presentations as required

Your skills and experiences:

• Educated to degree level in Engineering, Mechanical or Science subjects

• Be able to design documentation with the ability to present these to customers and wider groups

• Have the ability to solve complex engineering calculations

• Be proficient in CAD, MS Office and be comfortable with other IT applications

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The Mechanical Platform Systems team:

Being part of a team, you will have a great opportunity to be involved in the planning and reactive support to ensure that the engineering aspects of testing and commissioning activities are undertaken in a safe and appropriate way whilst ensuring design intent are maintained. It’s a fantastic opportunity to be a part of some of our most complex projects to date and to have great opportunity career development. We offer relocation support across all Submarine roles, subject to meeting eligibility criteria

Why BAE Systems?

This is a place where you will be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically leave 5 to 10 years of continuous residency in the UK depending in the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 10^th October 2025

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

#LI-MS1

#LI-Onsite

Are you ready to make a difference? We’re on the lookout for a Mechanical Engineer to join our dynamic Natural Resources team at Thames Water, based on-site at East Hyde WWT, Luton .

Location: East Hyde WWT, Luton, Bedfordshire (with travel to various sites and some home working options)

Hours: 45 hours per week – we offer flexibility, so just let us know what works for you!

As a Mechanical Engineer in our NRNN business unit, you will play a crucial role in delivering essential infrastructure projects within the Thames Water Framework. Your day-to-day responsibilities will include:

• Leading and managing mechanical engineering aspects of projects from concept through to commissioning.
• Supporting the design development of mechanical systems, including pumps, valves, pipework, HVAC, and process equipment.
• Collaborating with multi-disciplinary teams, including civil, electrical, process, and CAD Engineers.
• Interpreting and developing mechanical specifications in line with Thames Water standards.
• Conducting site surveys and assisting in producing construction and as-built documentation.

This role is perfect for you if you have:

• A degree or HNC/HND in Mechanical Engineering or a related field.
• Experience in delivering mechanical engineering projects within the water/wastewater sector.
• Proficiency in reviewing technical drawings and specifications (AutoCAD, BIM knowledge).
• The ability to manage multiple projects and deadlines in a dynamic environment.
• Strong communication, reporting, and coordination skills.
• A full driving licence.

At Kier, we value potential and welcome transferable skills! Even if you don’t meet every requirement, we encourage you to apply and have a conversation with us.

Explore the incredible growth and scale of our water business, dive into our diverse project portfolios, and uncover both current and future career opportunities. There’s never been a better time to get involved!

We’re proud to offer a wide variety of benefits that you can tailor to your needs. Discover more about our benefits package and how we support our brilliant people.

At Kier, making our workplace diverse and inclusive is a top priority. We’re committed to continuous improvement and value the contributions of our employees in shaping our diversity and inclusion initiatives.

As a Disability Confident employer , we ensure that a fair and proportionate number of disabled applicants who meet the minimum criteria for this role will be offered an interview.

We look forward to seeing your application! Join us and take the first step toward a rewarding career with Kier!