Role: Sales Engineering Manager (Mechanical Bias) Location: Central London Employment Type: Full-time, permanent, on-site Salary: £95,000 - £100,000 We’re working with a specialist contractor operating within critical environments, delivering full-scope design, build and infrastructure solutions across complex projects. They’re now looking to bring in a Sales Engineering Manager to lead the front-end engineering function - someone who can take ownership of technical solutioning, pre-construction, and commercial input across bids and client engagements. This role leans heavily toward mechanical systems, so a strong background in cooling and associated infrastructure is key. That said, you’ll still need to understand how everything ties together across the wider M&E and data centre ecosystem. What you’ll be doing: \* Leading the technical and engineering input across bids, tenders, and early-stage opportunities \* Translating client requirements into robust, deliverable technical solutions \* Owning the pre-construction phase - including design input, estimation, and bid strategy \* Producing and reviewing proposals, technical submissions, and supporting documentation \* Carrying out take-offs, BOQs, and labour build-ups to support accurate pricing \* Driving value engineering and alternative solutions to improve both cost and deliverability \* Acting as the technical lead in client meetings, design reviews, and bid presentations \* Managing supplier and subcontractor engagement during tender stages \* Supporting handover into delivery teams, ensuring scope and design intent are clear Technical focus: This role is mechanically led, with a strong emphasis on: \* Cooling systems (CRAC/CRAH, chilled water, DX, free cooling) \* HVAC and thermal management within critical environments \* Integration with electrical systems (LV distribution, UPS, generators) \* Coordination with wider infrastructure including containment, cabling, and white space fit-out What they’re looking for: \* Strong background in mechanical engineering, ideally within critical or complex environments \* Proven experience across design, estimation, and pre-construction \* Experience in a sales engineering, bid, or solutions role \* Ability to take ownership of technical proposals from concept through to submission \* Solid commercial awareness - understanding pricing, risk, and margins \* Experience engaging with clients, consultants, and internal delivery teams \* Comfortable reviewing drawings and producing technical documentation Ideal background: \* Mechanical bias within M&E contracting or building services \* Experience working on large-scale commercial, industrial, or mission-critical projects \* Data centre experience is beneficial, but not essential \* Candidates from sectors such as pharma, industrial, manufacturing, or other complex environments will also be considered