Business Development / Account Manager

Assystem is an international company with one mission: accelerate the energy transition around the world.



Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.

We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.



To ensure a viable, efficient, and reliable energy future for all.



Assystem is a leading Global Engineering Consultancy tasked with shaping the future of the energy landscape and helping to deliver net-zero solutions.

Whether through our New Build, Decommissioning, Defence or Infrastructure business areas and partnerships, we need your talent to meet our demanding growth plans in the UK.



Join us and develop your career in a world class, inspiring & supportive environment.

⚡️💡 About Assystem

At Assystem, we are dedicated to accelerating the global energy transition. Our 7,500 Switchers combine their deep engineering expertise and cutting-edge digital technologies to drive projects that shape the future. With over 50 years of experience, we are among the world’s top engineering firms. Be part of a global community that’s focused on delivering innovative solutions that power the world forward.

🤝 Why Join the Community of Switchers?

Join one of the three largest nuclear engineering companies globally. At Assystem, you’ll be at the forefront of engineering innovation, helping to shape the future of energy and infrastructure. We provide you with the opportunity to work with prestigious clients such as National Grid, Network Rail, and National Highways, offering you the chance to make a meaningful impact across various sectors.

🚀 The Job Mission

You’ll be part of Assystem's Sales team, focusing on driving business growth within the Energy, Transport & Infrastructure sectors. Working closely with senior leadership, you’ll forge new client relationships and convert opportunities into successful contracts.

• ⚡️ Expand service lines across National Grid, Network Rail, and Tier 1 contractors.
• ⚡️ Build and maintain strong relationships with key clients and partners.
• ⚡️ Lead market analysis and develop account plans for existing and potential clients.
• ⚡️ Represent Assystem at key industry events and showcase leadership in the marketplace.
• ⚡️ Drive bid processes and create winning strategies for project tenders.
• ⚡️ Collaborate with operations to align business growth strategies with Assystem’s capabilities.
• ⚡️ Support in generating market intelligence reports and CRM updates.
• ⚡️ Lead bids and proposals when necessary, ensuring successful business growth.

Required Skills and Qualifications

🛠 Strong business development or sales experience within Energy, Transport, or Infrastructure.

🛠 Proven ability to lead bids and develop strategic client relationships.

🛠 Experience managing accounts and sales pipelines effectively.

🛠 Market analysis skills and the ability to develop and execute account plans.

🛠 Excellent communication and negotiation skills.

Desired Skills and Qualifications

✔️ Prior experience with National Grid, Network Rail, or similar industry clients.

✔️ Experience in project management or consulting services.

✔️ Knowledge of the energy transition and infrastructure development sectors.

✔️ Strong network within relevant industry sectors.

✔️ Familiarity with CRM systems and sales reporting tools.

🌟 Why Apply?

Be part of a company that drives innovation in energy, transport, and infrastructure. Join a team that empowers you to expand your career horizons and shape the future of key industries across the UK.

Security clearance:

Due to the nature of work to be undertaken applicants will be required to meet certain criteria in order to attain a minimum level of UK BPSS security clearance if not already security cleared to a minimum BPSS level.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.