Strategy and Sustainability Senior Consultant

About Weastem – Finance x Strategies for the New Climate Era

Weastem is a finance and strategy firm for the New Climate Era. We support financial institutions, asset managers, private equity firms, and corporates across Europe to navigate systemic risks, climate disruption, and emerging sustainability mandates. Founded in 2025 in Paris, we are a growing ecosystem of 20+ professionals located at the intersection of strategy, finance, and sustainability. We hold one conviction: finance must shift from being a lever of extraction to a force of transformation rooted in long-term value, resilience, and responsibility. 

Our ambition is clear

• Acting as a lab for regenerative finance innovation
• Developing strategies and frameworks that move beyond compliance into transformation
• Cultivating systemic thinking and cross-sector collaboration
• Training the next generation of finance professionals to work with purpose and vision

Weastem is expanding — and we are currently seeking Senior Consultants ready to play a key role in delivering and shaping missions that matter.

Your mission :

As a Senior Consultant, you will lead core components of our strategy projects and act as a trusted interlocutor to both clients and team members. Your responsibilities will include :

• Leading client engagements end-to-end: from scoping, methodology design, to delivery of recommendations that are practical and actionable
• Driving strategic framing of ESG and sustainability-related challenges: root causes, system-level disruptions, material impacts
• Guiding teams in crafting workstreams that combine analytical rigor, stakeholder insight, and scenario thinking
• Serving as a trusted advisor to senior stakeholders, ensuring clarity in communication, strong storylines and credibility in every deliverable
• Contributing to building our intellectual capital: research, methodology development, knowledge sharing
• Supporting internal growth: mentor junior colleagues, help shape Weastem’s strategy, refine firm processes
• Helping with firm development: proposal writing, corporate strategy inputs, thought leadership

Core types of missions you might lead:

• Strategic ESG / sustainability due diligence
• Portfolio risk & resilience analysis for climate, biodiversity, social dynamics
• Design of adaptation, climate, and regenerative finance strategies
• Transformation roadmaps for both financial and non-financial institutions
• Development of investment methodologies / theses that embed value creation and protection in the transition

What we look for

You are someone who:

• Has 5+ years of experience in strategy consulting, sustainable finance, ESG advisory, private equity, asset management or related fields
• Has led teams or workstreams, structured complex projects, and has delivered practical outcomes for senior clients
• Thinks systemically: you consider not just what is visible today, but what’s shifting beneath the surface (megatrends, regulatory tipping points, social expectations)
• Are skilled in stakeholder listening, discerning trade-offs, balancing ambitions with what is feasible and credible
• Bring curiosity, humility, and integrity — a willingness to question assumptions and collaborate
• Communicate clearly in English and ideally French; multilingual capacity is a plus
• Strong analytical ability, ability to navigate complexity, and a moral compass that aligns with our mission

What you'll find at Weastem

• A collective working environment where every voice matters — combining a core team and independent partners into a living ecosystem
• High autonomy: you’ll shape the missions you lead, influence methodology, and contribute to our evolving identity
• Exposure to intellectually rich, cross-sector challenges that require both thoughtful rigor and courage to act
• Support for learning, growth, and inquiry — regular internal reflections, training, mentorship
• A values-driven culture anchored in collaboration, integrity, courage, and systems thinking
• Flexible Paris offices, hybrid work policy, compensation that reflects your experience + impact

Recruitment process

• Two interview rounds with senior consultants/managers (including case-study on sustainable finance / strategic thinking)
• Final discussion with Partners
• Office visit in Paris (meet the team, experience our culture)