Hartree Partners
Business Development Manager – Power & Gas

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Hartree Partners is a global energy and commodities firm, founded in 1997. The firm is headquartered in New York and maintains offices in many financial centres around the world including London, Singapore, and Dubai. Hartree Partners LP is owned by the company’s Managing Partners, senior staff, and Oaktree Capital.
Hartree Solutions UK Limited is the customer facing portal for our wider trading businesses, specialising in Power & Gas supply to I&C companies, deal origination, involving the shaping and balancing of variable renewable generation, asset ownership, Hartree Solutions own, operate & optimise a fleet of 175MW of gas peak power assets across the UK plus additional third-party assets, this business group is rapidly growing and we are excited to expand our supply business alongside this overall growth.
Find out more about us by visiting our website at: http://www.hartreepartners.com/
Duties & Responsibilities
- Identify, develop and secure new B2B customers within the I&C and SME space for Hartree's power and gas supply offering.
- Build and manage a pipeline of prospective commercial and industrial customers across the UK.
- Sell fixed-price electricity and gas supply contracts with agreed contract durations.
- Engage with medium-sized enterprises, including sectors such as hotels, data centres and other energy-intensive businesses.
- Develop strong relationships with key decision-makers, including procurement, finance and operations stakeholders.
- Clearly communicate Hartree's competitive market offering and value proposition.
- Work closely with internal commercial and operations teams to onboard new customers efficiently.
- Monitor market developments and customer requirements to identify new commercial opportunities.
- Contribute to the ongoing development of this new business function and help shape future growth strategies.
- Maintain a database of contacts, actions and prospect status within our HubSpot CRM system.
- Contribute to the development of our marketing strategy and support the team at exhibitions, conferences and trade shows.
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.
What Success Looks Like
- Consistently generate new business opportunities and convert prospects into long-term customers.
- Build a strong pipeline of qualified commercial clients.
- Establish Hartree as a trusted supplier within the UK commercial energy market.
- Develop lasting customer relationships that lead to repeat business and referrals.
- Play a key role in growing this new commercial function from its early stages.


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Education / Experience
- Experience selling energy supply contracts to commercial or industrial customers.
- Proven track record of developing new business and winning commercial customers.
- Experience managing the full sales cycle from prospecting through to contract execution.
- Strong understanding of the UK commercial energy market.
- Excellent relationship-building, negotiation and communication skills.
- Experience leveraging a CRM system to improve customer experience and retention.
- Self-motivated with the ability to work autonomously in a fast-paced commercial environment.
- Comfortable working within a growing business where processes and strategies continue to evolve.
- Knowledge of licence-exempt supply or behind-the-meter energy solutions would be advantageous.
- Commercial mindset with a strong focus on delivering customer value and driving business growth.
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