Senior Mechanical Design Engineer

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Senior Mechanical Design Engineer – Building Services Consultancy
Location: Winchester (Hybrid)
Employment Type: Full-Time
Overview
We are seeking a Senior Mechanical Design Engineer to join a respected building services consultancy with 45 years’ experience delivering sustainable, value-driven engineering solutions. Based in Winchester, this role offers the opportunity to lead mechanical systems design on projects ranging from residential and commercial to healthcare, education, and industrial developments, including schemes valued up to £100m.
The Senior Mechanical Design Engineer will take ownership of mechanical design delivery, mentor junior engineers, and ensure integrated, low-carbon, energy-efficient solutions across a diverse portfolio of projects.

Key Responsibilities

Lead the design of mechanical systems, including HVAC, ventilation, heating, cooling, and domestic water systems from feasibility to construction
Produce 2D and 3D coordinated outputs using AutoCAD and Revit; perform dynamic thermal modelling using TAS
Collaborate with multi-disciplinary teams to deliver sustainable, low-carbon, and energy-efficient solutions
Mentor junior engineers and contribute to internal QA processes and design reviews
Prepare energy and sustainability reports, Part L/F compliance assessments, and technical documentation
Conduct site visits to verify installation accuracy and support project coordination
Engage with clients and contractors, overseeing value-engineering and technical decision-making
Candidate Profile

Degree in Mechanical or Building Services Engineering (BEng/MEng or equivalent)
Chartered Engineer (CEng) or working toward chartership (IMechE, CIBSE)
Minimum 6+ years’ consultancy experience in mechanical building services design
Proficiency in TAS, AutoCAD, Revit, IES, and Hevacomp
Strong knowledge of UK regulations (Part L & Part F, CIBSE guidelines) and sustainable design practices
Excellent leadership, communication, and project management skills
Proactive, structured approach with the ability to deliver complex projects on time and budget
Why Join Us

Work with a consultancy recognised for delivering sustainable, user-focused environments
Exposure to a wide variety of high-profile projects, including healthcare, urban extensions, corporate, and residential developments
Collaborative and structured team environment encouraging innovation and open communication
Benefits include hybrid working, healthcare plans, CPD-led training, and social events
Support for chartership and professional development, with access to advanced thermal modelling and sustainability tools
This is an exciting opportunity for a Senior Mechanical Design Engineer ready to lead complex projects, shape mechanical design solutions, and contribute to a sustainability-first consultancy. Take the next step in your career as a Senior Mechanical Design Engineer and join a forward-thinking, innovative team
Apply
Location:
Kings Worthy
Salary:
£45,000 - £60,000 /annum
Job Type:
FullTime
Category:
Engineering

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