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61 senior mechanical design engineer jobs found in Cardiff

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Pertemps TM
Feb 22, 2026
Senior Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior Mechanical Design Engineer – Building Services Location: Cardiff Salary: Competitive (dependent on experience) Benefits: 25 days holiday + bank holidays, pension, flexible & hybrid working Role Overview We are seeking a Senior Mechanical Design Engineer to join a busy and growing building services consultancy in Cardiff. This is an excellent opportunity to lead mechanical engineering design projects across commercial, residential, healthcare, education, and industrial sectors. As a Senior Mechanical Design Engineer , you’ll have autonomy over your work, manage multi-disciplinary projects, mentor junior engineers, and help shape the technical direction of the business. Key Responsibilities Lead mechanical design and engineering on projects from concept through to completion Prepare and review detailed calculations, specifications, and design documentation Produce high-quality drawings and BIM/Revit models Manage project deliverables including...
Pertemps TM
Feb 22, 2026
Senior Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior Mechanical Design Engineer – Building Services Location: Cardiff Salary: Competitive (dependent on experience) Benefits: 25 days holiday + bank holidays, pension, flexible & hybrid working Role Overview We are seeking a Senior Mechanical Design Engineer to join a busy and growing building services consultancy in Cardiff. This is an excellent opportunity to lead mechanical engineering design projects across commercial, residential, healthcare, education, and industrial sectors. As a Senior Mechanical Design Engineer , you’ll have autonomy over your work, manage multi-disciplinary projects, mentor junior engineers, and help shape the technical direction of the business. Key Responsibilities Lead mechanical design and engineering on projects from concept through to completion Prepare and review detailed calculations, specifications, and design documentation Produce high-quality drawings and BIM/Revit models Manage project deliverables including...
Pertemps TM
Feb 22, 2026
Senior Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior Mechanical Design Engineer – Building Services Location: Cardiff Salary: Competitive (dependent on experience) Benefits: 25 days holiday + bank holidays, pension, flexible & hybrid working Role Overview We are seeking a Senior Mechanical Design Engineer to join a busy and growing building services consultancy in Cardiff. This is an excellent opportunity to lead mechanical engineering design projects across commercial, residential, healthcare, education, and industrial sectors. As a Senior Mechanical Design Engineer , you’ll have autonomy over your work, manage multi-disciplinary projects, mentor junior engineers, and help shape the technical direction of the business. Key Responsibilities Lead mechanical design and engineering on projects from concept through to completion Prepare and review detailed calculations, specifications, and design documentation Produce high-quality drawings and BIM/Revit models Manage project deliverables including...
IntaPeople
Feb 22, 2026
Senior Mechanical Design Engineer
IntaPeople Newport, UK
A leading research and technology organisation in Newport is looking for a  Senior Mechanical Design Engineer  to join their growing R&D team. This is an exciting opportunity to work on cutting‑edge technologies within a hands‑on, innovative environment. You’ll take designs from concept through to prototype, working hands‑on with complex designs or innovative solutions. What You’ll Be Doing 3D/2D design and drafting of components and assemblies Concept development and design documentation Supplier liaison and component sourcing Prototype assembly, testing and validation Essential Skills & Experience BEng/MEng in Mechanical Engineering (or equivalent) Recent experience as a Mechanical Design Engineer Strong SolidWorks skills (modelling, drawings, simulation) Experience with high‑speed rotating assemblies Strong understanding of engineering principles, tolerances and manufacturing processes Ability to take designs from...
Pertemps TM
Feb 22, 2026
Senior/Principal Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior / Principal Mechanical Design Engineer – Building Services 📍 Location: South Wales | 💰 Salary: Competitive + Package 📅 Job Type: Full-time, Permanent Lead Mechanical Design, Mentor Talent, and Deliver High-Quality Projects A well-established and highly respected Building Services Contractor in South Wales is seeking a Senior / Principal Mechanical Design Engineer to strengthen their in-house mechanical design team. With a strong pipeline of projects across commercial, education, healthcare, residential, hospitality, and retail sectors, this is an exciting opportunity to take a leadership role with real responsibility. You’ll join a supportive team delivering technically challenging and rewarding projects, from multimillion-pound new builds to complex refurbishments, while having the chance to mentor junior engineers and shape the future of the department. Key Responsibilities Lead mechanical design on projects from concept through to completion Attend...
Pertemps TM
Feb 22, 2026
Senior/Principal Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior / Principal Mechanical Design Engineer – Building Services 📍 Location: South Wales | 💰 Salary: Competitive + Package 📅 Job Type: Full-time, Permanent Lead Mechanical Design, Mentor Talent, and Deliver High-Quality Projects A well-established and highly respected Building Services Contractor in South Wales is seeking a Senior / Principal Mechanical Design Engineer to strengthen their in-house mechanical design team. With a strong pipeline of projects across commercial, education, healthcare, residential, hospitality, and retail sectors, this is an exciting opportunity to take a leadership role with real responsibility. You’ll join a supportive team delivering technically challenging and rewarding projects, from multimillion-pound new builds to complex refurbishments, while having the chance to mentor junior engineers and shape the future of the department. Key Responsibilities Lead mechanical design on projects from concept through to completion Attend...
Pertemps TM
Feb 22, 2026
Senior/Principal Mechanical Design Engineer
Pertemps TM Cardiff, UK
Senior / Principal Mechanical Design Engineer – Building Services 📍 Location: South Wales | 💰 Salary: Competitive + Package 📅 Job Type: Full-time, Permanent Lead Mechanical Design, Mentor Talent, and Deliver High-Quality Projects A well-established and highly respected Building Services Contractor in South Wales is seeking a Senior / Principal Mechanical Design Engineer to strengthen their in-house mechanical design team. With a strong pipeline of projects across commercial, education, healthcare, residential, hospitality, and retail sectors, this is an exciting opportunity to take a leadership role with real responsibility. You’ll join a supportive team delivering technically challenging and rewarding projects, from multimillion-pound new builds to complex refurbishments, while having the chance to mentor junior engineers and shape the future of the department. Key Responsibilities Lead mechanical design on projects from concept through to completion Attend...
AtkinsRéalis
Feb 22, 2026
Senior / Principal Mechanical Design Engineer
AtkinsRéalis Bristol, UK
Job Description Are you a Mechanical Design Engineer who thrives on leading the way on solving difficult engineering problems? Are you drawn to complex projects and excited by the opportunity to rapidly progress your technical leadership skills to the next level, heading up multi-disciplinary projects? If so, you might enjoy solving the energy industry’s most important mechanical engineering conundrums for a multitude of energy systems across a variety of clients. You could be Managing exciting projects designing test rigs in support of the development of the UKs nuclear fusion capabilities, carrying out structural integrity assessment of primary plant (for both civil and defence applications) to keep existing fleet generating, designing high integrity structures for new nuclear establishments, or leading one of many renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying...
AtkinsRéalis
Feb 22, 2026
Mechanical Design Engineer – Nuclear
AtkinsRéalis Bristol, UK
Job Description Are you a Mechanical Design Engineer who thrives on solving difficult engineering problems? Are you drawn to complex projects and excited by the opportunity to rapidly progress into leadership positions, heading up projects and guiding junior engineers? If so, you might enjoy solving the energy industry’s most important mechanical engineering conundrums for a multitude of energy systems across a variety of clients. You could be designing test rigs in support of the development of the UKs nuclear fusion capabilities, carrying out structural integrity assessment of primary plant (for both civil and defence applications) to keep existing fleet generating, designing high integrity structures for new nuclear establishments, or leading one of many renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying being adaptable is a must! The constant in this role is the...
Stantec
Feb 22, 2026
Electrical Design Engineer (Experienced, Senior, Principal or Senior Principal) - Energy
Stantec Bristol, UK
The UK&I energy sector is undergoing a seismic shift. Surging demand, stricter regulations, and ambitious net-zero goals are driving groundbreaking innovation. Here's your chance to be at the heart of it all. Are you a passionate experienced Electrical Engineer with experience of working with HV and EHV voltages with experience of working with UK requirements/regulations? We are looking to recruit experienced Electrical Design Engineers at varying level of seniority from Experienced (ideally Chartered), to Senior, Principal and Senior Principal levels) to join the team across the UK. You will have the opportunity to get involved in wide range of projects including energy from waste, solar, interconnectors, windfarms, substations, OHL, energy building design, protection systems, LVAC, pump stations, etc. For more info on our projects, hear what our team have to say here . As a Principal/Senior Electrical Engineer, you will play a key role in all aspects of projects, from...
Galliford Try
Feb 22, 2026
Electrical Senior Design Engineer
Galliford Try Bristol, UK
Note for Recruitment Agencies: We prefer to hire directly and we will be in touch with our PSL Agencies if this role is eligible for release. We do not accept speculative CVs from agencies. If speculative CVs are sent, no fee will be applicable – please direct all queries to the relevant Resourcing Partner. Electrical Senior Design Engineer What you will be doing: As Electrical Senior Design Engineer you will be responsible for all activities associated with the production of Electrical Design in compliance with the Business Management Systems (BMS) and CDM regulations, assisting with the wider general Process, Mechanical, Electrical, Instrumentation, Control and Automation (PMEICA) and Civils design production activities, providing technical support to the supply chain procurement activities and supporting site activities as required. You will also assist with the management of Consultants and Sub-contractors design production.  About You: Have the necessary...
Stirling Dynamics
Feb 22, 2026
Electronics Hardware Design Engineer
Stirling Dynamics Bristol, UK
Overview Stirling Dynamics is recruiting Principal and Senior Electronics Hardware Design Engineer to join the Software & Electronic Hardware team. Due to recent contract wins and supporting continued growth, Stirling Dynamics are looking for a talented and experienced electronics design engineer to join our team to work with us delivering complex electronic based solution for electro-mechanical products, projects, and services to the world's leading Aerospace & Defence companies. This role is to fill a position in the dynamic multi discipline team developing electro-mechanical based systems for Electric Vertical Take Off and Landing Aircraft (EVTOL). This role will be based in our Bristol office with occasional travel to our clients’ sites as required however as part of our commitment to flexible working, employees are able to work a hybrid working model. Responsibilities The successful candidate will be responsible for producing...
Aecom
Feb 22, 2026
Principal Cable System Design Engineer
Aecom Bristol, UK
Company Description Work with Us. Change the World. At AECOM, we’re delivering a better world.Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world’s trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations. There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of nearly 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. We’re one global team driven by our common purpose to deliver a better world. Join us. Job Description...
Bridges Electrical Engineers
Feb 22, 2026
Mechanical Design Engineer
Bridges Electrical Engineers Midsomer Norton BA3, UK
Role purpose Are you a Mechanical Design Engineer with a background in the water and wastewater sector? Due to continued success building on our existing framework agreements and a confident growth plan in AMP 8 and AMP 9, across all 10 major water and wastewater companies in England and Wales, we’re seeking a confident, innovative professional to lead the design and delivery of complex infrastructure projects. Join our dynamic and growing team as a Mechanical Design Engineer with a passion for engineering sustainable assets which our valued customers are proud to own and operate. Role is available in our Midsomer Norton Office (Head Office), or Newport office or our Swansea office. In this role, you’ll have the opportunity to work on a diverse range of challenging projects, from innovative treatment systems to infrastructure upgrades, all while collaborating with a supportive, forward-thinking team of 40+ engineers.  Your expertise will shape sustainable engineering...
Bridges Electrical Engineers
Feb 22, 2026
Mechanical Design Engineer
Bridges Electrical Engineers Swansea, UK
Role purpose Are you a Mechanical Design Engineer with a background in the water and wastewater sector? Due to continued success building on our existing framework agreements and a confident growth plan in AMP 8 and AMP 9, across all 10 major water and wastewater companies in England and Wales, we’re seeking a confident, innovative professional to lead the design and delivery of complex infrastructure projects. Join our dynamic and growing team as a Mechanical Design Engineer with a passion for engineering sustainable assets which our valued customers are proud to own and operate. Role is available in our Midsomer Norton Office (Head Office), or Newport office or our Swansea office. In this role, you’ll have the opportunity to work on a diverse range of challenging projects, from innovative treatment systems to infrastructure upgrades, all while collaborating with a supportive, forward-thinking team of 40+ engineers.  Your expertise will shape sustainable engineering...
Renishaw
Feb 22, 2026
Senior Electronics Design Engineer
Renishaw Wotton-under-Edge GL12, UK
Job Description Wotton under Edge up to £50,000 depending on experience Renishaw’s CMM & Gauging products leads the market in delivering innovative, high accuracy measurement solutions to precision manufacturing processes around the world. Our patented touch trigger probe technology was first employed to measure intricate components for Concorde engines; today (and many iterations later) our products are the benchmark in high precision engineering for manufacturing hundreds of everyday items like mobile phones and laptops through to car and aircraft parts. There’s even a good chance our probes were involved in the production of the device you are reading this on. A senior electronics design engineer is required to join the CGPD electronics group. The successful candidate will join a multi-disciplined team developing ground-breaking new metrology solutions. An in-depth knowledge of electronics is an essential requirement along with a background of successfully...
Pertemps TM
Feb 22, 2026
Mechanical Design Engineer
Pertemps TM Cardiff, UK
Mechanical Design Enigneer - Cardiff Building Services  Your Opportunity A skilled Mechanical Engineer is needed to join a growing design team in Cardiff. This role gives you the chance to broaden your technical expertise across a wide range of projects, play an active part in the development of the business, and collaborate closely with a supportive group of engineering professionals. The Cardiff team has a strong and expanding presence throughout South Wales, contributing to projects reaching values of up to £200 million. Work spans tall buildings, student accommodation, colleges, schools, universities and blue-light facilities. You’ll have the opportunity to lead and support high-profile regional projects while also contributing to nationally significant schemes. Role and Responsibilities You’ll be involved in the full lifecycle of mechanical building services design, including: Producing calculations, reports, performance assessments and detailed design solutions as...
Arup
Feb 22, 2026
Associate OHL Design Engineer
Arup Cardiff, UK
Joining Arup   Arup undertakes transmission and distribution design projects across the globe. In the UK we deliver concept through to detail design for a wide range of clients including established asset owners and new market entrants (interconnectors, private wire schemes etc).  As an example, Arup recently formed a joint venture with Aecom to serve as the design and consenting service partner for the UK National Grid’s Great Grid Partnership. Over a period of 8–12 years, Arup will help deliver key aspects of the transmission grid transformation, ensuring a resilient, low-carbon energy network for the future. This is the UK’s major grid modernisation programme, set to deliver five times more electricity infrastructure than has been built in the past three decades. These projects, part of the Accelerated Strategic Transmission Investment (ASTI) framework, will enhance the country’s energy backbone, supporting planned renewable developments such as wind farms in the North Sea...
Pertemps TM
Feb 22, 2026
Mechanical Design Engineer
Pertemps TM Cardiff, UK
Mechanical Design Enigneer - Cardiff Building Services  Your Opportunity A skilled Mechanical Engineer is needed to join a growing design team in Cardiff. This role gives you the chance to broaden your technical expertise across a wide range of projects, play an active part in the development of the business, and collaborate closely with a supportive group of engineering professionals. The Cardiff team has a strong and expanding presence throughout South Wales, contributing to projects reaching values of up to £200 million. Work spans tall buildings, student accommodation, colleges, schools, universities and blue-light facilities. You’ll have the opportunity to lead and support high-profile regional projects while also contributing to nationally significant schemes. Role and Responsibilities You’ll be involved in the full lifecycle of mechanical building services design, including: Producing calculations, reports, performance assessments and detailed design solutions as...
Hoare Lea
Feb 22, 2026
2026 Electrical Design Engineer - Degree Apprentice - Cardiff
Hoare Lea Cardiff, UK
Are you an aspiring engineer looking to make a difference to the world around you? Do you want the chance to grow, learn, and be supported by industry leaders? This ever-changing world will be shaped by the buildings put into it; and we know it’s often the newest minds who have the brightest ideas. These days, engineering is a lot more than pipes and wires; we look at the building as a whole and are involved in every stage, from initial client discussions right through to construction and even the building’s ongoing performance. We collaborate with colleagues, architects, and other construction professionals, playing a critical role in every building’s design. What might you be doing? As an Electrical Design Engineer Apprentice, your day-to-day tasks will vary, as we’ll expose you to all aspects of our work so you can discover what suits you. You’ll learn to... Work on live projects – click to view our exciting projects Produce detailed designs and drawings Use the...
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