Costain Group PLC
Mechanical Package Manager

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Job Description
Costain is working closely with Severn Trent Water on their Capital Delivery Framework, as part of it's capital programme for AMP8. As part of the Design and Build Framework lot, Costain brings together its design, construction, and consultancy expertise to undertake renewal and refurbishment projects and will assist Severn Trent in its target to make continuous improvements to its safety performance, whilst ensuring continuity of supply and consequently lowering costs for its customers.
Following and during the design phase you will be the key point of contact for the Mechanical subcontract packages, Reporting to the designated Project Manager whilst feeding into the Head of Engineering and Design to maintain the continuity through the delivery process.
The Mechanical Engineer will be the conduit from Design through the delivery phase for one or multiple projects across the Framework dependant on project size.
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.
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No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
This role will be hybrid, with 3 to 4 days in region (Warwickshire and Worcestershire area).
At Costain, we believe diverse perspectives drive innovation. If you’re passionate about making a positive impact and think you can bring value to our team, we’d love to hear from you even if you don’t tick every box. Your unique skills and experiences could be exactly what we need.
Responsibilities
Key Responsibilities
- Design of wastewater M&E assets e.g., Pumping Stations, CSO`s & associated civil structures etc.
- Equipment sizing & selection (pumps, mixers, pipework etc).
- TMA, NRSWA coordination.
- Early site investigation works coordination.
- Early procurement of materials.
- Attendance and input into internal and client design reviews.
- Involvement with cost to complete / budget reviews with the contract delivery teams.
- Negotiating with suppliers and subcontractors.
- Preparation & management of project programmes.
- Managing Sub-contractors’ programmes
- Developing and reviewing inspection Test Plans
- Coordinating site actives with client


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Essential Knowledge, Skills, and Experience
- 5 years of Water Sector Experience
- DfMA Experience
Desirable
- NEC 4 Contracts Suit
Qualifications
Essential
- HNC or higher within Mechanical Engineering discipline
Desirable
- Membership of a relevant professional Body
- CEng
- CSCS
- APM or Equivalent qualification
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