At a Glance
- Tasks: Maintain and improve essential heating systems in a dynamic field-based role.
- Company: Join a respected engineering team supporting critical healthcare infrastructure.
- Benefits: Enjoy competitive pay, overtime, training, and career progression opportunities.
- Other info: Field-based role with varied tasks and strong support from the engineering team.
- Why this job: Make a real difference in healthcare while developing your technical skills.
- Qualifications: Experience in mechanical heating systems and a relevant qualification required.
Location: Field Based – London & Greater London
Job Type: Full-time, Permanent
Hours: 07:30 – 16:30 (excluding 30-minute lunch break)
Why Join Us
Join a highly respected engineering team working within one of the most technically challenging and rewarding environments. Your work will directly support critical healthcare infrastructure, ensuring safe and reliable services for patients and staff. We offer excellent earning potential through regular overtime, structured training programmes to expand your technical expertise, and genuine opportunities for career progression.
Role Overview
We are seeking a skilled and motivated Mechanical Heating & HIU Engineer to join our engineering team. The works are primarily based across sites in South & West London. This role is ideally suited to an engineer with experience working on commercial heating and HIU systems who is confident carrying out planned maintenance, reactive repairs, fault diagnosis, component replacements, and system upgrade works.
You will play a key role in maintaining, repairing, and improving essential heating and HIU infrastructure. The position offers a varied workload across multiple sites, plant rooms, and communal heating systems, including planned maintenance, reactive breakdown response, remedial works, and infrastructure improvement projects, with strong operational support from our wider engineering and management team.
We are committed to investing in our engineers through ongoing accredited training, overtime opportunities, and clear career progression pathways, including the potential to progress into Lead Engineer or Supervisory roles.
Working Pattern & Coverage
- Field-based role covering Northwest, West and South London.
- Travel between sites will be required depending on operational priorities and workload.
- Core working hours: 07:30 – 16:30 (excluding a 30-minute lunch break).
- Regular overtime opportunities available, including evenings and weekends.
- Participation in a 24-hour call-out rota is required. Call-outs are typically low volume, with a competitive standby allowance and enhanced rates for attended callouts.
Key Responsibilities
- Carry out planned preventative maintenance (PPM), servicing, fault finding, and reactive repairs on commercial heating, domestic hot water, and HIU systems.
- Respond to emergency breakdowns and service interruptions, restoring heating and hot water services through effective diagnosis and repair of HIU, plant room, and distribution system faults.
- Maintain, repair, install, and modify LTHW, MTHW, domestic hot water, and steam systems.
- Service and maintain plant equipment including plate heat exchangers, pumps, motorised valves, safety valves, gauges, controls, and associated mechanical equipment.
- Remove, inspect, clean, descale, and refit calorifier bundles, plate heat exchangers, and associated components.
- Carry out replacement and upgrade works on HIUs, pumps, valves, actuators, controls, plate packs, gauges, pipework, and other mechanical system components.
- Locate, diagnose, and repair leaks on heating, hot water, and associated pipework systems, implementing both temporary and permanent repairs as required.
- Undertake mechanical installation, modification, and re-pipe works using steel, stainless steel, galvanised steel, copper, and ABS pipework systems, including threaded, crimped, and welded fittings where applicable.
- Diagnose system faults and performance issues, identifying remedial works and providing recommendations for repairs, upgrades, and lifecycle replacement projects.
- Support planned refurbishment, upgrade, and infrastructure improvement projects.
- Attend occupied residential, commercial, and healthcare premises to investigate and resolve heating and hot water issues whilst maintaining high standards of customer service and professionalism.
- Ensure all work is completed safely and in accordance with health & safety legislation, RAMS, permits to work, site procedures, and client compliance requirements.
- Maintain accurate service reports, maintenance records, and documentation using company digital systems.
- Communicate effectively with supervisors, management, clients, and end users regarding system status, risks, recommendations, and completed works.
- Work independently or as part of a wider engineering team to deliver maintenance, reactive, and project works efficiently and to a high standard.
Skills, Knowledge & Experience
Essential
- Proven experience servicing, fault finding, repairing, and replacing Heat Interface Units (HIUs), including controls, actuators, plate heat exchangers, strainers, heat meters, and associated components.
- Proven experience as a Mechanical Heating Engineer within commercial, industrial, or communal heating environments.
- Strong experience working within commercial plant rooms and heating systems.
- Knowledge and practical experience of LTHW, MTHW, and domestic hot water systems, including operation, maintenance, and fault diagnosis.
- Experience maintaining and repairing pumps, valves, calorifiers, plate heat exchangers, and associated mechanical plant.
- Ability to diagnose faults, undertake reactive repairs, and carry out mechanical installations and system modifications.
- Experience diagnosing and repairing heating and hot water system leaks and associated distribution pipework.
- Strong understanding of health & safety legislation, safe systems of work, permits to work, and RAMS.
- Good communication, customer service, and reporting skills.
- Relevant mechanical qualification (NVQ Level 2/3 in Mechanical Engineering, Plumbing & Heating, or equivalent).
- Full UK driving licence.
Desirable
- Experience working on communal heating networks serving residential developments.
- Steam system maintenance and fault-finding experience.
- PSSR Competent Person (CP) or Authorised Person (AP) certification.
- Experience delivering plant room refurbishments, system upgrades, and infrastructure improvement projects.
- Experience producing remedial recommendations and supporting quotation or lifecycle replacement activities.
Benefits
- Overtime paid at enhanced rates.
- Training & Development opportunities.
- Standby allowance and additional overtime opportunities.
- Phone, tablet, fuel card and parking apps.
- Full induction and mentoring programme.
- Ongoing accredited training and development opportunities.
- Company pension scheme.
Mechanical Engineer in London employer: Mectrical Jobs
Join a leading engineering team dedicated to supporting critical healthcare infrastructure in London and Greater London. We pride ourselves on our collaborative work culture, offering excellent earning potential through overtime, structured training programmes, and clear pathways for career progression. With a commitment to employee development and a supportive environment, we ensure that our engineers are equipped to thrive in their roles while making a meaningful impact on the community.
StudySmarter Expert Advice🤫
We think this is how you could land Mechanical Engineer in London
✨Get Your Hands Dirty at Engineering Events
Join local engineering meetups or industry conferences related to mechanical engineering. Whether it's a workshop or a career fair, these events are goldmines for networking and getting a foot in the door. Plus, you can showcase your passion and enthusiasm directly to potential employers like Mectrical Jobs.
✨Connect with Professors & Peers
Tap into your university’s resources—professors often have connections in the industry. Don’t be shy to ask about potential openings or recommendations. Your classmates might also know of companies hiring. Often, it’s who you know that gets you in front of the right people!
✨Highlight Your Projects and Practical Experience
When you land those interviews, make sure to talk about your hands-on projects or internships. Whether it's a design project or hands-on experience with CAD software, specific examples will make you stand out. Companies like Mectrical Jobs love to hear about practical applications of your skills.
✨Apply Directly on Company Websites
Check out the careers page of Mectrical Jobs and apply directly through there. It shows initiative and interest in their specific values. Plus, you'll often find openings that aren't advertised on job boards, giving you a better chance to land that full-time gig!
We think you need these skills to ace Mechanical Engineer in London
Some tips for your application 🫡
Show Off Your Technical Expertise:In mechanical engineering, it’s vital to highlight your technical skills and projects. Make sure to include relevant software proficiency (like CAD tools) in your CV. If you've worked on specific engineering projects, detail your key contributions — we want to see how you’ve applied your skills in a practical setting!
Focus on Problem-Solving Examples:Employers in mechanical engineering love to see how you handle challenges. Use your cover letter to share specific instances where you’ve solved a complex problem or improved a design. This will show us you're not just knowledgeable but also capable of applying that knowledge effectively.
Highlight Relevant Certifications:Include any relevant certifications or training that can set you apart from the competition. Whether it's coursework from your degree, a recognised certification, or extra training in new technologies, we love to see candidates who continuously improve their skill set. This tells us you're serious about your career in engineering!
Tailor Your CV for the Role:Don’t forget to customise your CV for Mectrical Jobs and the Mechanical Engineer role specifically. Pull examples from your experience that align with the job description — it shows us you've done your research and are genuinely interested in becoming part of the team. We recommend applying through our website to ensure your application gets to the right people!
How to prepare for a job interview at Mectrical Jobs
✨Brush Up on Your CAD Skills
Since mechanical engineering often involves design processes, be ready to showcase your proficiency in CAD software like SolidWorks or AutoCAD. Bring along a digital portfolio or even some sketches that demonstrate your design capabilities — it’s a great way to show what you can bring to the table at Mectrical Jobs.
✨Prepare for Technical Questions
Expect technical questions that test your understanding of engineering principles and problem-solving skills. You might get hypothetical scenarios where you need to design a component or troubleshoot a mechanical system. Practising these types of questions will give you the confidence to tackle whatever comes your way!
✨Show Your Team Spirit
As a full-time mechanical engineer, collaboration is key! Be ready to share examples of past team projects or any experiences where you contributed to solving a complex problem with others. Demonstrating your ability to work in a team will resonate well with the interviewers at Mectrical Jobs.
✨Discuss Your Future Goals
Since this is a full-time position, your long-term vision is important. Be open about your career aspirations, whether it’s mastering a specific tool or leading projects. This shows that you're committed not just to learning but also to growing with Mectrical Jobs, making you a more appealing candidate.
