DI Jobs
  • Home
  • Search Jobs
  • Job Board Advertising Packages
  • Post a Job
  • Sign in
  • Sign up
  • Home
  • Search Jobs
  • Job Board Advertising Packages
  • Post a Job

Refine Search
Current Search
Onsite senior mechanical design engineer
Refine by Categories
Engineering  (558) Information Technology  (47) Executive & Management  (35) Consulting & Corporate Strategy  (12) Transport & Logistics  (11) Other  (8)
Manufacturing  (5) Finance  (4) Sales  (4) Construction & Trades  (3) Accounting  (2) Banking  (2) Media-Journalism  (2) QA-Quality Control  (2) Research  (2) Property  (2) Admin-Clerical  (1) Automotive  (1) Customer Service  (1)
More
Refine by Job Type
Permanent  (543) Contract  (55) Full Time  (52) Temporary  (7)
Refine by Salary Range
£18,000 - £25,000  (1) £25,000 - £35,000  (1) £35,000 - £45,000  (1) £45,000 - £60,000  (3) £75,000 - £100,000  (8) £100,000 - £150,000  (28)
£150,000 - £200,000  (14) £200,000 and up  (5)
More
Refine by County
Greater London  (126) West Yorkshire  (36) Greater Manchester  (35) England  (34) West Midlands  (30) Hampshire  (25)
Glasgow City  (21) Bristol City  (20) Lancashire  (16) West Sussex  (16) Westmorland and Furness  (16) Hertfordshire  (15) Portsmouth  (14) Staffordshire  (13) Warrington  (12) Warwickshire  (12) Aberdeen City  (10) Berkshire  (10) Somerset  (10) Cheshire West and Chester  (8)
More
TT
05 Oct, 2026
Permanent
Senior Mechanical Design Engineer - Water Industry
Tetra Tech Birchwood, Warrington, UK
Take the next step in your career by helping deliver major AMP8 and AMP9 wastewater programmes across the UK. Join Tetra Tech's growing Water Consultancy team and play a key role in shaping engineering solutions that address pollution, flooding and long-term water industry challenges. Purpose and scope of the role: As Senior Mechanical Design Engineer, you will lead and contribute to multidisciplinary wastewater and water treatment projects from feasibility through to detailed design. Working closely with clients, senior engineers and project teams, you will develop mechanical solutions, review existing site infrastructure, and produce technical outputs including specifications, calculations, drawings, reports and design risk assessments. You will support delivery across major frameworks and help guide the work of less experienced engineers. Your impact in this position: You will help deliver high-quality engineering solutions that improve water services and...
Search Consultancy Ltd
02 Oct, 2026
Permanent
Senior Mechanical Design Engineer
Search Consultancy Ltd London, UK
An established Building Services Consultancy is looking to appoint a Senior Mechanical Design Engineer to support the delivery of a growing portfolio of projects across the commercial, residential, and education sectors. This is an excellent opportunity for a skilled mechanical engineer who enjoys taking ownership of projects, developing client relationships, and mentoring junior engineers. You will lead schemes from concept through to completion, working as part of a collaborative multidisciplinary team delivering innovative and sustainable building services solutions. Responsibilities Lead the mechanical design of building services projects across all RIBA stages. Design and specify HVAC, public health, heating, cooling, and ventilation systems. Produce design calculations, technical specifications, reports, and feasibility studies. Coordinate with electrical engineers, architects, contractors, and other consultants. Attend client, design team, and site meetings as the...
Browne Construction
25 Sep, 2026
Permanent
Senior Mechanical Design Engineer
Browne Construction Hertfordshire, UK
We are seeking a Senior Mechanical Design Engineer to play a leading role within our Design Team, taking technical ownership of mechanical engineering solutions across a wide range of water and wastewater treatment projects. In this role, you will guide the full design process from concept through to completion, ensuring every mechanical system meets regulatory, safety, and client requirements while maintaining high standards of efficiency and sustainability. You will collaborate closely with multidisciplinary teams to deliver fully integrated designs, oversee technical reviews and risk assessments, and provide expert support during procurement, installation, and commissioning. Acting as a mentor to junior engineers, you will help shape the future capability of the team while championing innovation, quality, and best practice across the business. Please note that this role requires you to be in the office or on site at least 3 times a week. About Browne (Non -...
Browne Construction
25 Sep, 2026
Permanent
Senior Mechanical Design Engineer
Browne Construction Derbyshire, UK
We are seeking a Senior Mechanical Design Engineer to play a leading role within our Design Team, taking technical ownership of mechanical engineering solutions across a wide range of water and wastewater treatment projects. In this role, you will guide the full design process from concept through to completion, ensuring every mechanical system meets regulatory, safety, and client requirements while maintaining high standards of efficiency and sustainability. You will collaborate closely with multidisciplinary teams to deliver fully integrated designs, oversee technical reviews and risk assessments, and provide expert support during procurement, installation, and commissioning. Acting as a mentor to junior engineers, you will help shape the future capability of the team while championing innovation, quality, and best practice across the business. Please note that this role requires you to be in the office or on site at least 3 times a week. About Browne (Non -...
South East Water
29 Sep, 2026
Permanent
Senior Mechanical Design Engineer
South East Water Snodland, UK
Summary: Are you a skilled mechanical engineer looking for a role that offers both technical challenge and a genuine work-life balance? Do you want to use your expertise to lead meaningful projects that provide a vital service to our community? As one of our Senior Mechanical Engineers, you'll provide the technical leadership needed to keep our MEICA team moving forward. This is a varied role where you'll oversee resource allocation, solve complex mechanical queries, and help deliver capital engineering schemes from the initial design through to commissioning. Whether you're an experienced professional looking for a more stable, value-driven environment or a rising talent ready to step into a senior position, you'll find plenty of opportunity here to make a tangible impact. Main Responsibilities: Develop Technical Solutions: Coordinate with multi-disciplinary teams-including Process and Civil-to create integrated, practical solutions for water infrastructure. Lead...
Eden Brown
16 Sep, 2026
Permanent
Senior Mechanical Design Engineer
Eden Brown United Kingdom
Senior Mechanical Engineer Manchester Hybrid Working Up to 60k A chance to work on projects that genuinely make an impact Are you a Senior Mechanical Engineer looking for a role where you can work on exciting projects, collaborate with a genuinely multidisciplinary team and continue developing your career? This is an opportunity to join a leading multidisciplinary design practice in its Manchester studio, working alongside architects, engineers, designers and sustainability specialists on projects that shape the built environment. The Role You'll take a leading role in the delivery of mechanical building services projects, from early-stage concept through to detailed design and delivery. You'll be involved in developing mechanical strategies, carrying out design calculations, producing specifications and technical information, and coordinating designs with the wider project team. You'll also have regular opportunities to work directly with clients and design teams,...
Rullion Ltd
06 Oct, 2026
Permanent
Senior/Principal/Head of Mechanical Design Engineers - Water
Rullion Ltd Trafford Park, Stretford, Manchester, UK
Senior Mechanical Design Engineer Principal Mechanical Design Engineer Mechanical Discipline Lead - Water Location: Manchester (Hybrid Working Available) Contract: Permanent or Contract (Outside IR35) The Opportunity Our client is a growing engineering design consultancy delivering multidisciplinary projects across the UK water, rail and utilities sectors. Due to continued growth, they are looking to recruit experienced Senior Mechanical Design Engineers, Principal Mechanical Design Engineers and Mechanical Discipline Leads to join their Manchester-based team. This is an excellent opportunity for experienced Mechanical Engineers with a background in the UK water industry to play a key role in delivering major clean water and wastewater projects. Depending on your level, you'll combine hands-on engineering design with technical leadership, mentoring and discipline governance, helping to shape engineering excellence across multiple water industry frameworks. Working...
Eden Brown
29 Sep, 2026
Permanent
Intermediate or Senior Mechanical Engineer
Eden Brown Kent, UK
Intermediate or Senior Mechanical Design Engineer Kent Hybrid Working Up to 60k Multidisciplinary Engineering Consultancy Complex & Technical Projects Are you an Intermediate or Senior Mechanical Engineer looking for a role where you can take genuine ownership of projects, work across technically challenging buildings, and have direct involvement with clients and the wider design team? This is an opportunity to join an established multidisciplinary engineering consultancy with over 30 years of experience, bringing together mechanical, electrical, public health, fire engineering, sustainability, project management and building validation expertise. The business works across the UK and internationally, delivering coordinated engineering solutions across sectors including commercial, residential, healthcare, education, data centres, industrial, defence and aviation. The Opportunity As a Mechanical Design Engineer, you'll become an important part of the MEP team, taking...
Rullion Ltd
06 Oct, 2026
Permanent
Senior/Principal/Mechanical Design Engineers - Water Design
Rullion Ltd London Colney, St Albans, UK
Senior/Principal/Mechanical Engineer My client is an engineering design consultancy working closely with a wide range of clients, across a number of disciplines within the UK rail and utilities industries. Full time role from the St Albans Office with occasional site visits for which travel expenses will be paid. Hybrid working possible when required provided agreed in advance. Can be contract (outside IR35) or permanent role. Responsibilities: Provide design deliverables that satisfy safety and quality requirements. Produce design calculations and drawings for the water industry Direct and develop CAD technicians. Prepare scopes for and check output of subcontract M&E design teams Liaise with, prepare specifications for and review tender responses from equipment suppliers and manufacturers Prepare design investigations, reports and specifications. Design in compliance with relevant technical, professional and group standards. Ensure project change for...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Gosport, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Portsmouth, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Bosham, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Waterlooville, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Petersfield, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Southampton, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
BAE Systems
06 Oct, 2026
Permanent
Senior Mechanical Engineer
BAE Systems Southsea, Portsmouth, UK
Job Title: Senior Mechanical Engineer Location: Portsmouth Naval Base - working a hybrid pattern We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £50,000 dependent on experience Who we are: Join BAE Systems and you'll be part of something bigger. As a valued member of our global colleague network, you'll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You'll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, there's no limit to where a career at BAE Systems could take you. Role description: As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including...
Office Angels
06 Oct, 2026
Permanent
Design Engineer
Office Angels Aberdeenshire, UK
The role - Design Engineer Location - Aberdeen City Centre Hours - Full-time - 8.30-17.00 (Monday to Friday) Salary - 33-35k depending on experience Office Angels are delighted to be recruiting on behalf of our client for a Design Engineer to join their growing team in Aberdeen. This is an exciting opportunity for an experienced Design Engineer with a background in fire alarm and smoke ventilation systems to take ownership of multiple projects and play a key role in delivering high-quality design solutions. Working within a collaborative and supportive environment, you'll be responsible for developing designs from concept through to completion while liaising with customers and key project stakeholders. If you're looking to progress your career within a specialist engineering sector and work on a variety of technically challenging projects, we'd love to hear from you. The Role As a Design Engineer, you will be responsible for managing your own workload...
Rullion Managed Services
06 Oct, 2026
Contract
Welding NDT) Field Engineer
£350 - £475 daily
Rullion Managed Services Nether Stowey, Bridgwater, UK
Role: Field Engineer - NDT & Welding Inspector Position: Contract Location: Hinkley Point C, Somerset Duration: Ongoing Contract Day Rate: Up to 350 p/d PAYE + 36 days annual leave Up to 475.72 p/d Umbrella Play Your Part in Building the Future of UK Energy Are you a CSWIP 3.2-qualified inspector with practical welding knowledge and experience of NDT under UK PCN requirements? Bring your expertise to Hinkley Point C and help ensure critical construction work meets the standards demanded by a major nuclear project. Rullion is recruiting a Field Engineer - Welding & NDT Inspector to join the site's construction surveillance team. This is a field-based opportunity for someone who enjoys being close to the work: inspecting installations, engaging with contractors and identifying quality issues before they become bigger problems. We welcome applications from candidates across nuclear, pharmaceutical, petrochemical, chemical and water...
MM
06 Oct, 2026
Permanent
Senior Product Development Engineer
Mackie Myers Saffron Walden, UK
Summary Our client is an innovative healthcare technology company developing next-generation diagnostic platforms designed to improve accessibility, speed and reliability of testing solutions. They are seeking a Senior Product Development Engineer to take ownership of electronic and embedded product development, leading projects from concept through to manufacture within a highly collaborative, multidisciplinary R&D environment. Our Client Our client is a rapidly growing diagnostics and healthcare technology business focused on developing advanced products that combine engineering, scientific and manufacturing excellence. Operating at the forefront of product innovation, they are building technologies that have the potential to transform how diagnostic testing is delivered and accessed globally. The company offers an entrepreneurial environment where engineers are encouraged to take ownership, influence product direction and work across the full development...
Search Consultancy Ltd
06 Oct, 2026
Permanent
Senior Electrical Design Engineer
Search Consultancy Ltd Cambridge, UK
Role Purpose We're recruiting on behalf of a leading Building Services Consultancy for an experienced Senior Electrical Design Engineer to join their growing team. With a strong pipeline of projects across the Healthcare, Education, Commercial, Residential, Heritage and Mixed-Use sectors, this is an excellent opportunity to work on diverse, high-profile developments while progressing your career. Responsibilities Lead the electrical design of building services projects from feasibility and concept design through to detailed design, construction and project completion. Produce and review electrical designs including power distribution, lighting, emergency lighting, fire alarms, security systems, small power, standby power and renewable technologies. Prepare design calculations, specifications, technical reports and drawings in line with industry standards and client requirements. Coordinate electrical designs with mechanical, structural and architectural disciplines to...
  • Home
  • About Us
  • Recruitment Blog
  • Terms & Conditions
  • Privacy & Cookies Policy
  • Employer
  • Post a Job
  • Job Board Advertising Packages
  • Diversity, Inclusion & Equality (ED&I) Articles
  • Sign in
  • Contact Us | Recruiters
  • Job Seeker
  • Find Jobs
  • Upload CV
  • Job Seeker Help & Advice
  • Equal Opportunities Monitoring Form
  • Sign in
  • Contact Us | Jobseeker
  • Facebook
  • X / Twitter
  • LinkedIn
© 2026 DIjobs Limited  |  3rd Floor, 86-90 Paul Street, London EC2A 4NE  |  Company Registration: 13316146  |  VAT No: GB 377358650
Diversity Job Board | Inclusion | Equality | ED&I | DEI | EDI | D&I | DEIB | IDEA | BDI | Jobboard | Vacancies | Diversity Jobs | Careers | Jobsite | Diversity and Inclusion Job Boards | Find a New Job | Job Search with DIjobs