Commercial Assistant - Power

Help keep the projects powering the UK commercially on track. At Morson Praxis, we’re the technical consultancy that actually delivers what it designs and strong commercial management is essential to ensuring our projects are delivered efficiently, sustainably and successfully.
Our Power team supports a growing portfolio of projects across the UK’s energy and electrical infrastructure. We’re looking for an organised and commercially minded Commercial Assistant to join the team, supporting the financial and commercial management of projects from initial setup through to delivery.
If you’re confident with numbers, have a great eye for detail and want to develop your career within commercial management in the power and engineering sector, we’d love to hear from you.
We’re looking for a Commercial Assistant to support the commercial management of projects across our growing Power portfolio.
Reporting to the Commercial Manager / Senior Quantity Surveyor, you’ll work closely with our Project Managers, Site Managers and wider project teams to support cost control, procurement, subcontract administration, valuations and financial reporting.
This is a varied role offering excellent exposure to the commercial lifecycle of engineering projects and the opportunity to build your knowledge and experience alongside an established team.
Who We Are
At Morson Praxis, we combine engineering expertise with digital innovation to deliver complex technical solutions across energy, infrastructure, aerospace, defence and industrial sectors.
As part of the wider Morson Group, we offer the agility of a specialist engineering consultancy with the strength and stability of one of the UK’s leading technical organisations. Our Power teams support the development and delivery of critical electrical infrastructure, helping our clients strengthen and transform the networks that keep the UK connected.
You’ll join a collaborative environment where commercial thinking, technical excellence and continuous improvement come together to deliver successful projects.
What You’ll Do
As a Commercial Assistant, you’ll provide day-to-day commercial and administrative support across our Power projects, including:
* Supporting the preparation of cost reports, valuations, forecasts and other financial reporting
* Maintaining accurate commercial records, including contracts, purchase orders, variations and payment applications
* Supporting the preparation and submission of client applications and subcontractor payment assessments
* Recording and tracking variations, compensation events and other project changes
* Working with Project Managers to raise purchase orders for suppliers and subcontractors
* Supporting the Commercial Manager with appropriate terms and conditions for suppliers and subcontractors
* Coordinating documentation to onboard new suppliers onto the Approved Suppliers List
* Maintaining procurement trackers, subcontract registers and other commercial records
* Liaising with suppliers and subcontractors to resolve documentation and payment queries
* Reviewing timesheets ahead of manager approval, identifying errors or anomalies and resolving queries with relevant stakeholders
* Allocating project booking codes to employee and contractor timesheets
* Raising contracts for Limited Company contractors in line with IR35 requirements
* Creating new projects within the Project Information Management System (PIMS) and maintaining associated commercial information
* Supporting month-end reporting, budget updates and project cost allocations
* Assisting with cash-flow forecasting and expenditure tracking
* Ensuring commercial records are accurate, complete and maintained in line with company procedures and audit requirements
* Attending project meetings where required and tracking commercial actions
* Working collaboratively with Project Managers, Site Managers and the wider Commercial team throughout project delivery
What We’re Looking For
Essential
Experience within an administrative, project support or commercial support role
Good understanding of commercial processes within an engineering or construction environment
Strong numerical skills with excellent attention to detail
Proficiency in Microsoft Office, particularly Excel
Strong organisational and document management skills
Ability to prioritise competing tasks and work effectively to deadlines
Excellent written and verbal communication skills
Proactive approach to identifying and resolving issues
Professional and discreet when handling commercially sensitive information
GCSEs or equivalent in Mathematics and English
Desirable
Previous experience supporting Quantity Surveyors or Commercial Managers
Knowledge of construction contracts such as NEC or JCT
Experience using commercial systems such as CEMAR or FastDraft
HNC/HND or Degree in Quantity Surveying, Construction Management, Commercial Management or a related discipline
Experience within the power, utilities, construction or engineering sectors
Why Praxis?
💡 Build your commercial career: Develop hands-on experience across cost control, procurement, contracts and project financial management.
🚀 Learn and grow: Work alongside experienced Commercial Managers and Quantity Surveyors with opportunities to take on greater responsibility as your skills develop.
🤝 Collaborate: Work closely with commercial, engineering and project delivery teams across the business.
⚡ Make an impact: Support projects that are helping develop and strengthen the UK’s critical power infrastructure.
🏢 Belong: Be part of a supportive consultancy backed by the wider Morson Group, with opportunities to develop your career.
What's in it for you
26 days annual leave plus bank holidays
Full support and guidance towards chartership
Company funded professional memberships
Family-friendly policies including enhanced maternity, paternity and adoption leave
Life assurance scheme
24/7 GP Access
Funded team socials and events
Mega-projects throughout the UK and internationally
Employee Assistance Plan
High street discount scheme
Enhanced company sick pay scheme
Mental Health Wellbeing app
Specsavers discount scheme
Morson Praxis is proud to be an equal opportunities employer
We value diversity and are committed to fostering an inclusive, respectful and supportive working environment where everyone can thrive. We welcome applications from all individuals and make our employment decisions based on merit, qualifications and business needs, regardless of age, gender, disability, ethnicity, religion or belief, sexual orientation, or any other protected characteristic