Mantis Ltd
Senior Electrical Engineer

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At Mantis
We are looking for someone highly driven, ambitious and technically sharp who is ready to play a key role in delivering low energy building solutions.
As a company, we have grown to an exciting point since being established in 2018 and are continuing on an ambitious high-growth journey. As our Senior Electrical Engineer, you will play a key role in supporting the delivery of projects while helping drive our shared vision of meeting the UK’s 2050 Net Zero Carbon Targets for Buildings.
As Senior Electrical Engineer, you will become an integral part of a friendly and dynamic consultancy based in the heart of Wilmslow town centre and will play an important role in supporting the continued growth of the business.
The Role
The role will primarily focus on delivering electrical building services design within our Building Services Team.
This role is about ownership: leading electrical building services design, providing technical oversight, working closely with clients and project teams, and supporting the successful delivery of projects across domestic, commercial and public sector buildings.
Typically, your projects will cover:
- Heating Systems Design
- Hot & Cold Water Design
- Ventilation and Heat Recovery Systems Design
- Above Ground Drainage Systems Design
- HVAC Systems Design
- HVAC Control Systems
- Air Conditioning & Cooling Systems Design
- Mechanical Plant Room Design
- Air Source and Ground Source Systems Design
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
We anticipate that you will take great pride in the quality of your work and all associated deliverables.
What We Offer
- Total Compensation Package up to £67,500
- Base Salary up to £60,000
- 36 days Holiday (Including Public Holidays)
- 10% Overall Pension Contribution
- Comprehensive Training and Personal Development Plan
- Hybrid Working (2 days WFH / 3 days office-based)
- Monday to Friday (Flexi Start / Finish Time)
Additional Company Benefits
- Private Medical Insurance
- Holiday Buy and Sell Scheme
- Electrical Vehicle Salary Sacrifice Scheme
- Cycle to Work Scheme
- Sustainable Volunteering Day
- Regular Company Funded Social Events
- We are an equal opportunities employer
The Role
- Providing Electrical Services Design to Low Energy Buildings (Domestic, Commercial and Public Building Sectors)
- Leading Electrical Building Services Design projects through all RIBA stages 1-6
- Supporting the Building Services Design process (RIBA 1-4) and services team
- Supporting the construction process (RIBA 5-6) and project management teams
- Supporting Low Energy Building Design (RIBA 1-4) and technical teams
- Produce, review, and approve calculations, analyses, drawings, models, and technical reports.
- Providing subject matter expert knowledge on Electrical Engineering Design
- Acting as a mentor for Junior Electrical Engineers
- Developing and improving technical systems in the business
- Developing and maintaining relationships with clients, suppliers, and experts


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We Are Looking for Skills in Some of the Following Areas
- Internal, External and Emergency Lighting Design
- Small Power and Data System Design
- Fire & Security Systems Design
- Cable Containment Design
- LV Electrical Distribution
- HV Electrical Distribution
- Cable Sizing and Amtech Calculations
- Lightning Protection Systems
- Electrical Plant Room Design
- Solar Photovoltaic Systems Design
- Battery Storage Systems Design
- Dialux
- Revit
To Be Successful, the Following Experience Will Be Required
- Chartered Electrical Engineer
- Member of a recognised professional body e.g. IET, CIBSE
- Minimum 5 years’ experience in the Building Services Sector
- Minimum 3 years’ experience in a senior position
- Minimum Bachelor’s Degree in Electrical Engineering or Building Services Related Degree / Apprenticeship
If you would like to start your career here at Mantis Energy, please apply with your CV and cover letter or feel free to contact us at ADMIN@MANTISENERGY.CO.UK
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