235 Chemical Engineering jobs in the United Kingdom

Job Description:

Unit Operations Manager

Based - Waltham Petcare Science Institute

Salary - £42,000 - £52,000 pa + 12% Bonus

What are we looking for?  

• Educated to Degree level in a scientific discipline - this is an essential requirement.

• R&D or Operations background.

• Line manager and people leadership experience with proven ability to build and lead high performing teams.

• A proven ability to build strong collaborative partnerships.

• Confidence in handling and analysing performance data.

What will be your key responsibilities?  

• Provide great line management, for a team of up to 25 people, across 1 or 2 units.

• Accountability for Quality, Health, Safety and Environmental standards on the units.

• Ensure the highest standards of animal welfare and care on all animal units.

• Support the delivery of the research plan, and optimise the quality of data generated in research studies.

• Actively monitor delivery and effectiveness of Waltham standards and operational KPIs.

• Own and manage continuous improvement projects on the areas of unit Quality, Safety, Environment & Animal Welfare.

What can you expect from Mars?  

• Work with over 130,000 diverse and talented Associates, all guided by The Five Principles.  

• Join a purpose driven company, where we’re striving to build the world we want tomorrow, today. 

• Best-in-class learning and development support from day one, including access to our in-house Mars University. 

• An industry competitive salary and benefits package, including company bonus. 

Find out more about what Mars can offer you by visiting our Global Careers site.

#LI-SS1

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid

Job title: Principal Process Safety Engineer

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:

• Completing DSEAR risk assessments and compliance activities
• Mentoring and developing junior engineers
• Reviewing and producing explosion safety strategies
• Peer reviewing work
• Risk Analysis
• Developing and producing processes and policy documentation for the site

Your skills and experiences:

Essential:

• Experience of working in an explosion safety engineering environment and applying various methods of hazard analysis
• DSEAR risk assessment production including hazard identification and analysis (preferably from a high hazard industry)
• A thorough understanding of Hazardous Area Classification (HAC) and Proven track record in implementing business processes to achieve strategic objectives

Desirable:

• Degree qualified in a STEM discipline
• COMAH – Control of Major Accident Hazards (Safety Case support) experience
• Site Asset Protection experience & Fire Safety Engineering experience

Benefits:

You’ll receive benefits including a competitive pension scheme, enhanced annual leave allowance and a Company contributed Share Incentive Plan. You’ll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts – you may also be eligible for an annual incentive.

The Safety and Environmental Team:

This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. 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: 28th August 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-AB1

#LI-Hybrid