Sustainability Strategy Consultant (12 Month FTC)

We see a world where we all contribute to a thriving planet and together, we are a collective force for good. The Planet Mark is a sustainability certification which recognises outstanding achievements, encourages action, and builds an empowered community of like-minded individuals. We work with businesses to rigorously measure their carbon footprint and social value, engage their staff and supply chain to unlock their knowledge and drive passion for change, and communicate their progress to build a positive brand. We help businesses put a purpose at the heart of their organisation that brings social, environmental, and economic considerations together.

As a Sustainability Strategy Consultant at Planet Mark, you will work at the heart of the net zero transition, partnering directly with our members to shape and deliver meaningful sustainability strategies. Your work will help organisations move beyond ambition to action, embedding net zero thinking into business strategy, decision‑making, and operations. By translating complex sustainability challenges into clear, practical roadmaps, you will play a key role in driving measurable carbon reduction, long‑term business value, and positive environmental impact across a wide range of sectors.

What that means day to day:

• Lead the delivery of the net zero strategy phase of the Planet Mark Net Zero Certification Programme for member organisations.
• Work closely with senior stakeholders and executives to define sustainability visions, motivations, and credible net zero roadmaps supported by robust business cases.
• Analyse organisational sustainability priorities, assessing how strategies are tracked, governed, and executed across the business.
• Collaborate with Planet Mark’s internal teams to incorporate the latest thinking, tools, technologies, and policy developments into strategic recommendations.
• Contribute to workshops, thought leadership, and research by sharing insights on industry trends, frameworks, standards, and best practice.

What you’ll need to be successful:

• To succeed in this role, you will need to combine strong strategic thinking with the ability to build trusted relationships and communicate complex ideas clearly.
• You will be comfortable working independently while also collaborating across multidisciplinary teams, and you will bring a genuine passion for sustainability and driving positive environmental change.

Essential qualifications and experience:

• A degree in Environmental Science, Sustainability, Business, or a related field.
• Demonstrable experience in sustainability consulting or sustainability strategy development.
• A proven track record of developing and delivering sustainability or net zero strategies that create tangible impact.
• Strong verbal communication skills, with confidence engaging stakeholders at all levels in both in‑person and virtual settings.
• Excellent written communication skills, with a clear, concise, and detail‑oriented approach.

What you'll get in return:

• We operate a hybrid workplace policy, where you will work from the office 3 days per week.
• Enhanced Parental Leave
• Generous annual leave
• Healthcare Plan
• Annual Giving Day – an extra day to give back to yourself or your community
• Cycle‑to‑work Scheme
• Pension scheme with employer contributions
• Life Assurance
• Rewards Program – access to discounts and cashback
• LinkedIn Learning License for upskilling & development

Interested but don’t feel you meet all the requirements? Our recruitment team assesses and reviews all applications against the role and business needs. We believe in people having transferable and soft skills and want you to know that we do consider where an individual might not meet all the criteria, but have the aptitude and capability, nonetheless. Our priority is to ensure we set people up for success.

Bring Your Whole Self to Work. Alcumus is proudly an equal‑opportunity employer. We are committed to ensuring that no candidate is discriminated against because of gender identity and expression, race, disability, ethnicity, sexual orientation, age, colour, region, creed, national origin, or sex. We are dedicated to growing a diverse team while continuing to create an inclusive environment where everyone feels safe and empowered to be themselves.

What you can expect if you apply:

• A response to your application within 15 working days
• An interview process consisting of:
• An initial discovery call with the recruiter
• A first stage interview via Microsoft Teams
• Additional interview (likely face‑to‑face) with the stakeholders you’ll be working with closely in the role

We’re keen to ensure our hiring process allows you to be at your best, so if you need us to make any adjustments, please just let us know.