Principal Mechanical Design Engineer

Ada Meher; Greater London; Hybrid; GBP 63,000 - 77,000; Full time

Benefits offered by this job

9-Day Fortnight

Hybrid Working

L&D Support

Travel Allowance

Job summary

Ada Meher Limited in London is seeking a Principal Mechanical Design Engineer to join their hybrid office. This role focuses on large-scale data centre projects, delivering design-led MEP solutions across RIBA Stages 2-4, in collaboration with electrical and sustainability specialists.

The position offers a supportive L&D culture and a clear progression path. The role operates in a hybrid model (2 days in the office) with a £70k base salary plus a £4,560 annual travel allowance.

Qualifications

• Strong experience in Mechanical Design Engineering in the Building Services sector.
• Data Centre design experience is essential.
• Experience designing HVAC systems, cooling solutions, ventilation and related plant.
• Background delivering MEP designs across RIBA Stages 2-4.
• CIBSE accreditation or charterships would be a bonus.
• Ability to lead projects, coordinate with multidisciplinary teams and mentor junior engineers.
• Strong communication skills and confidence engaging with clients and internal stakeholders.

Skills

Mechanical design engineering

Data centre design experience

HVAC systems design

RIBA Stages 2-4

Mentoring junior engineers

Client & stakeholder communication

CIBSE accreditation

Job description

Principal Mechanical Design Engineer - London (Hybrid) - £70k + £4.5k Travel Allowance

9‑Day Fortnight | Hybrid Working | L&D Support | Mission Critical Projects (Data Centres)

Ada Meher is partnered with a leading MEP Consultancy as they look to appoint a Principal Mechanical Engineer into their London office. This team delivers design‑led MEP solutions across RIBA Stages 2-4, working on some of the most technically demanding environments in the UK — from Data Centres and Science facilities to Airports, Stadiums, Retail, Commercial and Residential developments. This role is focused on large-scale Data Centre builds internationally.

You’ll be joining a business known for its structured progression pathways, strong L&D culture and collaborative engineering environment. The role is fully design‑focused, working closely with Mechanical, Electrical and Sustainability specialists to deliver high‑quality building services designs across a diverse project portfolio.

The consultancy operates a hybrid model, typically 2 days per week in the office though this depends on team requirements. You will also receive a £4,560 annual travel allowance on top of salary. As part of their commitment to work/life balance employees have the option to condense their hours into a 9‑day fortnight and making every other week 4 days long.

To Be Considered:

• Strong experience in Mechanical Design Engineering in the Building Services sector
• Data Centre design experience is essential
• Experience designing HVAC systems, cooling solutions, ventilation, air distribution and associated mechanical plant
• Background delivering MEP designs across RIBA Stages 2-4
• CIBSE accreditation or industry specific charterships would be a bonus
• Ability to lead projects, coordinate with multidisciplinary teams and mentor junior engineers
• Strong communication skills and confidence engaging with clients and internal stakeholders