Assistant General Counsel – Commercial

About Commonwealth Fusion Systems:

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

Join the power movement as Assistant General Counsel – Commercial

CFS is seeking an experienced, pragmatic, and highly strategic Assistant General Counsel – Commercial
to serve as a foundational leader on our legal team. This is a rare opportunity to shape how legal operates at a company building an entirely new industry from the ground up.

This role is a true n of 1: you will be the company's dedicated commercial legal lead, operating as both a hands-on individual contributor on CFS's most complex, mission-critical transactions and the architect of the legal infrastructure that will support the company's next phase of commercial growth. As CFS scales, you will be expected to build and lead a team in commercial and corporate legal, making this as much a leadership opportunity as a technical legal one.

Reporting directly to the Chief Legal Officer, you will partner with executive leaders across commercial and business development, corporate development, strategic partnerships, supply chain, finance, and engineering — giving you direct visibility into, and influence over, the company's most consequential strategic decisions

CFS is at an inflection point, moving from R&D to commercial execution. The deals, structures, and legal foundation this person builds now will directly shape how CFS contracts, partners, and scales for years to come. This is not a maintenance role — it is a builder role, for someone who wants outsized ownership over both the substance of high-stakes deals and the systems that make the whole commercial legal function work.

Build & Scale the Commercial Legal Function Serve as the architect of CFS's commercial legal capability — building on and improving existing processes to create scalable contract workflows, tools, standard templates, negotiation playbooks, and training that empower business teams and accelerate deal velocity. Lay the groundwork for, and ultimately recruit and lead, a team as the function grows

Lead High-Stakes Commercial and Partnership Negotiations Structure, draft, and negotiate complex, high-value commercial and partnership agreements, including key customer, supplier, and vendor deals, long-term procurement contracts, joint developments, strategic alliances, and partnerships

Drive Corporate Development & Strategic Partnerships Serve as a core legal partner on corporate development initiatives — strategic partnerships, joint ventures, strategic investments, technology transfers, licensing, and other complex transactions central to scaling commercial fusion. Partner closely with corporate development and open innovation teams to structure and close deals that advance CFS's strategic position

Support Core Corporate Legal Matters Provide legal support on corporate, subsidiary and entity management, and corporate transactions as they relate to commercial, corporate development, or strategic partnership transactions and agreements, serving as a trusted resource to the CLO, CFO, and…