612 Mechanical jobs in London

• Produce and review mechanical design documentation including:
• Pumping systems
• Pipework layouts
• Filtration units
• Water and wastewater treatment systems
• Work closely with civil and electrical engineering teams to develop integrated solutions.
• Attend regular client meetings (e.g., weekly progress updates, hazard reviews).
• Support stakeholder communication and ensure design solutions align with client expectations.
• Engage with the supply chain for the specification and procurement of mechanical equipment.
• Conduct site visits for surveys and inspections.
• Provide technical support during construction and commissioning phases as needed.

• Degree in Mechanical Engineering or a related discipline.
• Experience in the design of mechanical systems within the water or wastewater sectors.
• Knowledge of UK water industry standards and practices (e.g., WIMES).
• Ability to interpret and produce P&IDs, layout drawings, and technical specifications.
• Strong communication skills for effective collaboration and client engagement.
• Full UK driving license (for site travel).
• Familiarity with 3D design tools (e.g., AutoCAD Plant 3D, Revit).

Mechanical Design Engineer – London

We’re working exclusively with a highly regarded building services consultancy who are looking to appoint a Mechanical Design Engineer to their London office. This is a fantastic opportunity to join a respected firm with a diverse project portfolio and an excellent track record of staff development and retention.

About the Client

Our client delivers high-quality building services solutions across a range of sectors including Commercial, Residential, Hotels, Hospitality, and Mixed-Use Developments . With a collaborative and forward-thinking culture, they offer the chance to work on medium to large-scale, complex projects from concept design through to construction.

The Role

As a Mechanical Design Engineer, you’ll take a key role in the delivery of mechanical and multi-disciplinary building services projects. Working closely with architects, structural engineers, and other disciplines, you’ll ensure all designs meet the highest technical, safety, and compliance standards.

Key Responsibilities

• p>Lead the mechanical design elements of multi-disciplinary project teams.

• Coordinate designs with other building services disciplines and external consultants.

• Take projects from concept through to detailed design (RIBA Stages 1–4).

  /li>

• Carry out design reviews and validation at key project stages.

• Ensure all deliverables are technically accurate and compliant.

• Work independently to achieve objectives while upholding Health & Safety and CDM regulations.

Candidate Profile

Qualifications & Experience:

• Degree in Mechanical or Building Services Engineering (or equivalent).

• Minimum 3 years’ experience in mechanical building services design.

  /li>

• Chartered Engineer (CIBSE or IMechE) – highly desirable, or actively working towards.

  /li>

• Familiarity with RIBA design stages.

• Strong technical knowledge of MEPH systems.

Skills & Attributes:

• Ability to work independently and take ownership of deliverables.

• Excellent communication skills to liaise across multi-disciplinary teams.

• Strong attention to detail with a proactive, problem-solving approach.

• Produce and review mechanical design documentation including:
• Pumping systems
• Pipework layouts
• Filtration units
• Water and wastewater treatment systems
• Work closely with civil and electrical engineering teams to develop integrated solutions.
• Attend regular client meetings (e.g., weekly progress updates, hazard reviews).
• Support stakeholder communication and ensure design solutions align with client expectations.
• Engage with the supply chain for the specification and procurement of mechanical equipment.
• Conduct site visits for surveys and inspections.
• Provide technical support during construction and commissioning phases as needed.

• Degree in Mechanical Engineering or a related discipline.
• Experience in the design of mechanical systems within the water or wastewater sectors.
• Knowledge of UK water industry standards and practices (e.g., WIMES).
• Ability to interpret and produce P&IDs, layout drawings, and technical specifications.
• Strong communication skills for effective collaboration and client engagement.
• Full UK driving license (for site travel).
• Familiarity with 3D design tools (e.g., AutoCAD Plant 3D, Revit).

Mechanical Design Engineer

Industry: Scientific Instrumentation

Location: North London

Salary: £45,000 – £55,000

A growing technology company at the forefront of scientific research and instrumentation is seeking an experienced Mechanical Design Engineer to join their R&D team. The company develops complex, high-precision systems used across a wide range of industries.

This is an exciting opportunity to work on the design and development of next-generation systems, tackling issues associated with precision instrumentation. You’ll play a key role in taking products from concept through to manufacture, working in a multi-disciplinary team where innovation and problem-solving are highly valued.

Key Responsibilities:

+ Design and develop precision components and mechanisms

+ Take products from early stage concepts to production

+ Specify and integrate motorised chamber mechanisms and actuators

+ Develop fabricated, machined, and formed parts, from specification to testing

+ Produce detailed CAD models and engineering drawings

+ Support prototyping, assembly, and testing of new systems

Key Requirements:

+ Degree in Mechanical Engineering, Product Design, or a related field

+ 5+ years’ experience in mechanical design and product development

+ Strong 3D CAD skills - SolidWorks

+ Experience in electro-mechanical products, scientific instrumentation or control systems

+ Knowledge of manufacturing processes - fabrication, machining, and 3D printing

+ Familiarity with ISO9001 and/or ISO13485 quality systems

If you’re an innovative Mechanical Design Engineer looking to apply your skills in the development of cutting-edge precision instrumentation, we’d love to hear from you. Apply today with your updated CV.

Mechanical (HVAC) Design Engineer – Where Decarbonisation meets machine learning.

Interested in using machine learning and AI to accelerate decarbonisation within the built environment?

Want to work for a firm that rewards you when you do well, and isn’t afraid to try new things? As a recognised leader in decarbonisation projects for blue-chip clients, this Mechanical Contractor continues to set new standards.

With around 140 employees across the UK, they provide a true turn-key solution. Everything is delivered in-house, including design, installation, project management, commissioning, and maintenance, ensuring they have full control of quality and certainty of cost in every project.

The result?

A team that consistently delivers projects on scope, budget, and time, and rewards its employees with three separate bonus payments every year. You'll join a motivated, supportive, and forward-thinking team that's setting new standards in energy efficiency and sustainable design.

Due to planned growth, they are now looking for a client-facing Mechanical (HVAC) Design Engineer for their London office. Someone with at least three years of experience in HVAC design and a keen interest in decarbonisation, automation, and AI.

Someone with experience in energy efficiency within existing buildings , and a good understanding of controls, heat pumps, and heat recovery systems. You’ll design innovative heating and cooling solutions for major tech, media, leisure, and industrial clients across London and the Southeast.

Benefits

• Tax-free annual bonus (£3,600)
• Ongoing training and development
• 25 days leave
• Hybrid working, two days a week from home
• Option of working from abroad for up to one week at a time.
• Uncapped profit share
• Individual bonus (in addition to the profit share described above)
• Direct access to the company founder, directors, and other key stakeholders.
• Matched pension to 4%
• Payment of 1 x Professional Membership.

This is a rare opportunity to combine your HVAC design experience with a passion for AI and machine learning, to help accelerate decarbonization across the built environment.

Perfect for someone who thrives on delivering practical solutions and wants to help shape the future of building services through innovation and impact.

For more information, please call/email: /

(3659)

About Arondite

Arondite is building the next generation of autonomous systems, software and AI to solve the world's most important frontier problems across defence, critical industries and the humanitarian sector. We are looking for mission-driven engineers who want to be part of a highly motivated team and build things that make a positive difference.

The Role

We are looking for talented and flexible mechanical design engineers to own cutting-edge mechanical projects from concept through to mass production, working with electronics and systems engineers to build fully integrated products. The designs will prioritise ease of use and high-reliability, without compromising aesthetics. Some products may centre around seamlessly integrating off-the-shelf parts, whilst others will be totally custom designs, or some combination of the two.

You will liaise with suppliers to build prototypes and set up manufacturing, as well as support customers to analyse any failures and continuously identify areas for improvement.

As an early hire within a start-up, you will have the opportunity to set up and drive the mechanical design within the company and potentially lead the function as we continue to expand and build a broader range of products. Regardless of experience level, you will review the output of other engineers and provide feedback - everyone’s input is valued.

Requirements

You should apply if you have:

• BSc/BEng or MSc/MEng in a technical or engineering subject
• Practical experience using a major 3D CAD/CAM tool, ideally Solidworks, to create parts for 3D printing, injection moulding, machining and sheet metal fabrication
• Solid grasp of the physics behind mechanical design principles
• Experience of integrating electromechanical and electronic components within mechanical designs
• Hands-on workshop skills to create, integrate and adapt parts for prototyping and testing
• An appreciation of aesthetic elements of product design

Note: The above describes the perfect candidate. We encourage you to apply even if you only partially fulfil this list!

Nice to have:

• Experience with Ingress Protection design and certification
• Knowledge of military robustness standards such as MIL-STD-810
• Exposure to European CE Marking and/or US NRTL marks
• Understanding of design for electromagnetic compatibility

All engineers at Arondite are expected to:

• Communicate effectively within a multi-disciplinary team of hardware, software and AI engineers
• Be resourceful and open-minded in seeking solutions to engineering challenges
• Teach themselves to be the expert, if we don’t already have one in a particular area

Please note: This is an in-person position based in London. The successful candidate must by the start of their employment have permission to work in the UK.

Benefits

We offer:

• The opportunity to work with world-class engineers on a wide range of technologies
• Free training and education to quickly fill knowledge gaps
• The best resources and equipment required to do your job
• Exposure to working closely with customers on real problems
• Free meals and snacks in the office
• 7% employer pension contribution
• Employee Stock Options for everyone, so we all have a stake in the company’s growth
• Relocation support

Mechanical Design Engineer - Water

• Leading contractor working on long-term Thames Water & Southern Water projects
• Excellent opportunityfor further progression & career development

SSA are currently recruiting for a leading Civil Engineering & Utilities contractor who are looking to add a Mechanical Design Engineer to their successful MEICA team, workingas part of their AMP8 frameworks for Thames Water & Southern Water.

The role will involve:

• Production of mechanical detailed design submissions
• Working with design teams in the production of design & construction drawings and documentation
• Liasing with civil, electrical, process and operations teams
• Producing design deliverables including, but not limited to, P&IDs, hydraulic calculations, pipework layouts, pipework schedules, P&E schedules, Pipe supports/thrust design, Mechanical GAs and layouts
• Reviewing technical submissions
• Maintaining design input throughout project lifecycle, from initial feasbility thorugh to outline and detailed design, and construction/handover.
• Attending site meetings

They can offer a strong salary & package, further professional development (MEng/Chartership etc), opportunities for progression within the business, & long-term projects (5 years+) in the region.

Essential:

• Degree / HNC / HND in Mechanical Engineering
• Clean/Wastewater experience (beneficial)