Costain Group
Senior Commercial Manager

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Senior Commercial Manager
Costain’s aim is to shape, create, and deliver solutions which transform the infrastructure ecosystem, achieving sustainable growth in our four essential markets in the UK: Transport, Water, Energy, and Defence.
Our Energy business helps customers transition to clean energy, while providing practical solutions to improve the efficiency, sustainability, and resilience of existing infrastructure. We focus on delivering engineering, construction, and digital solutions to support the UK’s transition to a low-carbon economy.
The Senior Commercial Manager will be providing support to the Energy Sector Commercial Director in the management of resources and succession planning. Proficient in the commercial role, gained through deep and broad experience built on concepts and principles within energy and process or complex infrastructure delivery sectors.
Disciplined and commercially astute with the ability to identify, analyse and develop responses to commercial risks, taking ownership and responsibility. In addition, the Senior Commercial Manager shall always be responsible for the management of the implementation and ongoing assurance that the Company’s governance and any contract specific requirements are adhered to.
Costain is committed to the values and behaviours that we stand for as an organisation and guide the way we work. The Senior Commercial Manager is expected to exhibit these behaviours in their conduct and interaction with colleagues, internal and external stakeholders and our customers.
We have four core values which underpin four core behaviours. Our values are Integrity, which is about doing the right things in the right way. Customer focus, which is about striving for excellence through really understanding, anticipating and meeting our customer needs. Safety and Wellbeing, which is about making sure that personal safety and wellbeing is at the heart of everything we do and Environmental and social responsibility, which is about helping our environment and communities thrive. Our behaviours are Be collaborative is about being connective, being inclusive and teamwork. Be curious is about being innovative, agile and constantly learning. Be caring is being empathetic and considerate in what we do and Be courageous is about being bold and committed to being better.
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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?
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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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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.
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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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This is a project role, with travel to our London, Manchester, and Aberdeen offices as required..
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.
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Costain helps to improve people’s lives with integrated, leading edge, smart infrastructure solutions across the UK’s energy, water, transportation and defence markets. We help our clients improve their business performance by increasing capacity, improving customer service, safeguarding security, enhancing resilience, decarbonising and delivering increased efficiency. Our vision is to be the UK’s leading smart infrastructure solutions company. We will achieve this by focusing on blue chip clients whose major spending plans are underpinned by strategic national needs, regulatory commitments, legislation or essential performance requirements. We offer our clients leading edge solutions that are digitally optimised through the following five services which cover the whole lifecycle of their assets: future-shaping strategic consultancy; consultancy and advisory; digital technology solutions; asset optimisation and complex programme delivery. Our culture and values underpin everything we do.


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Costain appreciate the time and effort taken when applying for one of our positions but, due to the high volume of responses, we are unable to provide individual feedback on candidates at application phase.
We do share individual feedback following an interview.
A Disability Confident employer will generally offer an interview to any applicant that disclose they have a disability and meets the minimum criteria for the job as defined by the employer.
It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people.
For more details please go to the Disability Confident website: https://www.gov.uk/government/collections/disability-confident-campaign [https://www.gov.uk/government/collections/disability-confident-campaign]
Costain are working with Thames Water on a variety of water and wastewater projects and have fantastic opportunities for individuals to join our growing AMP7 delivery team, working predominantly across the Thames Valley and Thames South regions. There is a mix of projects ranging from smaller capital maintenance to large civil new build schemes.
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