Senior Mechanical Estimator Location: London Sector: Mechanical Engineering, M&E Building Services & Critical Infrastructure Employment Type: Full-Time, Permanent Salary: £80,000 - £90,000 per annum Working Hours: 07:00 - 16:00 About the Company Our client is an established mechanical and electrical engineering contractor delivering complex building services projects across the UK. Their work includes plant relocations, infrastructure upgrades and installations within data centres and live operational environments, where service continuity, careful planning and technically sound project delivery are essential. Role Overview We are recruiting for an experienced and commercially astute Senior Mechanical Estimator to join a growing Commercial team based in London. The role involves managing the full mechanical estimating process, from initial tender enquiry through to final pricing and submission, ensuring estimates are accurate, competitive, technically compliant and commercially viable. Working closely with clients, suppliers, subcontractors, Project Managers and commercial colleagues, you will contribute to securing new business and supporting successful project delivery. You will also provide technical guidance and mentoring to an existing Junior Mechanical Estimator, reporting directly to the Estimating Manager and Commercial Director. Key Responsibilities Manage the full mechanical tendering process, from initial enquiry and document review through to final pricing and submission. Prepare detailed cost estimates, quantity take-offs, bills of quantities, labour assessments, material schedules and tender submissions. Review mechanical drawings, specifications, schematics and tender documentation to establish project scope and technical requirements. Assess mechanical installation methods, construction sequencing, programme requirements and labour resources, particularly for live operational environments. Identify design discrepancies, scope gaps and commercial risks, raising RFIs and evaluating value engineering opportunities. Obtain, analyse and negotiate subcontractor and supplier quotations to ensure technical compliance and competitive pricing. Attend site surveys, tender walkthroughs, client meetings, commercial tender reviews and bid approval meetings. Support tender negotiations, post-tender clarifications and project handovers, ensuring commercial assumptions, exclusions and risks are clearly communicated. Work closely with Project Managers, Contracts Managers and Commercial teams to ensure estimates reflect practical installation requirements. Mentor and support the Junior Mechanical Estimator, reviewing estimates and contributing to improvements in estimating procedures, templates and cost databases.Requirements Proven experience as a Senior Mechanical Estimator or experienced Mechanical Estimator within construction, mechanical engineering or M&E building services. Strong technical understanding of HVAC, heating, cooling, chilled water systems, pipework, plantroom installations and associated mechanical infrastructure. Demonstrable experience estimating complex mechanical projects, ideally involving plant relocations, infrastructure upgrades, data centres or other critical environments. Ability to independently manage mechanical tenders from initial enquiry through to final submission. Experience producing quantity take-offs, detailed cost estimates, labour calculations, material schedules and pricing breakdowns. Strong understanding of mechanical installation methods, construction sequencing, labour productivity and commercial tendering principles. Experience sourcing, evaluating and negotiating subcontractor and supplier quotations. Ability to interpret mechanical drawings, schematics, specifications and technical documentation. Strong proficiency in Microsoft Office, particularly Excel, alongside experience using mechanical estimating software and digital take-off tools. Completion of a recognised mechanical apprenticeship or possession of a relevant qualification in Mechanical Engineering, Building Services Engineering or a related discipline. Excellent numerical, analytical, organisational, communication and negotiation skills. Ability to manage multiple tenders, meet demanding deadlines and provide technical support to junior colleagues. Full UK driving licence and willingness to travel to client sites and project locations as required.Desirable Experience Previous practical experience working on mechanical installations or within a site-based mechanical engineering role. Experience estimating plant replacement, plant relocation and mechanical infrastructure upgrade projects. Experience working within live operational sites, data centres or other critical environments where service continuity and careful project planning are essential.What's on Offer Salary: £80,000 - £90,000 per annum. Employment: Permanent position within a growing Commercial team. Employee-Owned Trust (EOT): Eligibility to become a beneficiary following 12 months of continuous employment. Private Healthcare: Vitality healthcare cover for you and your dependants. Private Dental Insurance: Dental cover as part of the employee benefits package. Life Assurance: Financial protection for you and your loved ones. Company Pension: 7% employer contributions alongside 5% employee contributions. Annual Leave: 24 days' holiday plus UK Bank Holidays. Length of Service Rewards: Recognition and rewards for continued service. Private Financial Advice: Access to professional financial guidance. TradePoint Discount Scheme: Access to exclusive discounts. Professional Development: Ongoing training, skills development and career progression opportunities.Who Should Apply This position is suited to experienced Mechanical Estimators with strong technical knowledge of building services installations, proven commercial estimating capability and the confidence to independently manage complex tenders. Candidates with experience in plantroom installations, mechanical infrastructure upgrades, live operational environments or data centre projects will be particularly well suited to the role. #INDPERM
Senior Mechanical Estimator in London employer: Optima Site Solutions Ltd
Optima Site Solutions is an excellent employer for Labourers, offering a supportive work culture that prioritises the well-being and development of its team members. With over 20 years in the industry, employees benefit from diverse project opportunities in Minster on Sea, along with access to ongoing training and career advancement. Join us to be part of a company that values your skills and fosters a rewarding work environment.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Mechanical Estimator in London
✨Join Construction Networks
Get yourself involved in local construction networks or industry events. They often have job boards, and networking can lead to unadvertised positions. Plus, it’s a great way to meet potential future colleagues!
✨Show Off Your Skills on Site
If you’ve done any hands-on work, whether it's through internships or personal projects, make sure you can showcase it. Consider volunteering for local construction projects or getting involved in community build days; it’s a solid way to demonstrate your skills and build connections.
✨Utilise Construction Job Sites
Don't just rely on the big job boards. Look at niche construction job sites—many companies prioritise these for full-time roles. Apply through these sites, but don’t forget to reach out directly to companies you admire, like Optima Site Solutions Ltd, to express your interest!
✨Tailor Your Application for Full-Time Roles
Make your application stand out by tailoring it specifically for full-time positions. Highlight how your previous projects align with the company's work. At StudySmarter, we encourage you to demonstrate your commitment and long-term interest in the industry when applying for roles like Senior Mechanical Estimator at Optima Site Solutions Ltd.
Some tips for your application 🫡
Showcase Your Relevant Experience:In the construction industry, it's essential to highlight any hands-on experience you have. Whether it’s past projects you've worked on or specific roles you've held, make sure your CV emphasises your practical skills and contributions to construction sites.
Include Certifications and Qualifications:Don’t forget to list any certifications relevant to construction, like CSCS cards or other safety qualifications. These can really set you apart from other candidates and show that you’re serious about health and safety on-site.
Tailor Your Cover Letter to Construction:When writing your cover letter for a construction role, focus on your problem-solving capabilities and teamwork. Construction relies heavily on collaboration, so mention how you’ve worked successfully with others to complete projects on time and within budget.
Adapt Your CV Format to the Field:Ensure your CV is clear and easy to read, with sections dedicated to skills such as project management, technical abilities, and site supervision. Construction roles often require a blend of technical know-how and soft skills, so make sure both are highlighted effectively.
How to prepare for a job interview at Optima Site Solutions Ltd
✨Brush Up on Technical Knowledge
For a construction role, it's crucial we have a solid grasp of industry standards, safety protocols, and specific tools used on-site. Make sure you're familiar with relevant regulations and can talk confidently about them, as these often come up in interviews.
✨Showcase Your Projects
Since this is a full-time position, be ready to discuss any previous construction projects you've worked on. Bring a portfolio or have detailed descriptions that highlight your role, the challenges you faced, and how you overcame them—this’ll show you’re not just book-smart but also practically savvy.
✨Understand the Team Dynamics
Construction is all about teamwork, so prepare to discuss how you interact with different stakeholders like architects, engineers, and contractors. Maybe think of examples from past experiences to illustrate your ability to communicate and collaborate effectively.
✨Prepare for On-the-Spot Problem Solving
Be ready for some practical questions or scenarios where you'll need to demonstrate your problem-solving skills. Interviewers might present you with a hypothetical construction issue to solve, so practice articulating your thought process clearly and logically—this could really set you apart!
