Client Partner

Groundswell Sustainability; Greater London; On-site; GBP 70,000 - 120,000; Full time

Job summary

Groundswell Sustainability is seeking a Client Partner to lead relationships and deliver sustainability strategies for a portfolio of private market clients. You will work closely with clients to co-create value and drive impact across the business.

The role requires 5+ years in sustainability, strong financial literacy, and proven senior-stakeholder management. You will work in a small, ambitious team where commerciality and relationship-building are key, in a London-based setting.

Qualifications

• 5+ years in sustainability or related field.
• Solid financial knowledge.
• Experience managing senior stakeholders and directing client work.

Responsibilities

• Lead relationships with a portfolio of private market clients.
• Develop and deliver sustainability strategies for clients.
• Collaborate across Groundswell to grow the network and business.

Skills

Sustainability strategy

Stakeholder management

Client relationship management

Job description

Groundswell is unlocking value and efficiency through sustainability – we call it the third wave.

• The first wave: Sustainability was seen as separate from business. A few companies embedded it because they understood its value.
• The second wave: Regulators, consumers, and investors forced it onto the agenda. This created a whole new industry, but sustainability became siloed from the wider business.
• The third wave: Companies are now realising that sustainability is simply part of doing good business – moving it from a siloed function to a firm-wide capability.

We spun out of Octopus Group in 2025, where our founding team built and led the Impact and Sustainability function. Octopus is known for disrupting broken industries and solving real-world problems, and Groundswell applies that same mindset to sustainability. Our mission is to make sustainability an embedded, valued capability within businesses.

To learn more about our story, founders, and the work we do, please have a look at our website.

Our Culture:

Our secret sauce is the Groundswell culture. It’s how we attract great people, how we keep them, and how we deliver the work that we are known for. Our culture combines an exceptional community, with a platform for opportunity, and sustainable performance.

You can read more about what makes our culture unique here.

The Role:

We are looking for a Client Partner to join our growing team, leading relationships and delivering sustainability strategies across a portfolio of private market clients.

We’re hiring for two language profiles:

• Continental Europe: professional working proficiency in at least one of Spanish, Italian, French or Portuguese.
• Nordics: professional working proficiency in Norwegian or Swedish.

The role suits people with 5+ years in sustainability, solid financial knowledge and experience managing senior stakeholders. You’ll work directly with clients (in person 5 days a week) to develop and deliver sustainability strategies, drawing on expertise and support from across the business. You’ll also play an active role in growing Groundswell, building relationships and our network.

We are looking for someone who is commercially minded, and genuinely excited by what it means to build something in a small, ambitious business.

Please note we cannot sponsor visas.