Financial Controller

Mantel is developing the first molten-salt-based carbon capture technology which is designed to operate at the high temperatures found inside boilers, kilns, and furnaces – enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across industries to reduce emissions and achieve net‑negative emissions. By solving for efficiency Mantel can cut costs substantially, unlocking carbon capture’s role in reaching net zero emissions by 2050.

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As Mantel’s Financial Controller, you will be responsible for all accounting and corporate financial functions. You will work with the COO on the development of financial strategy, and you will oversee the development and implementation of critical financial controls, reporting systems and tools, policies and procedures. This role is ideal for a self‑starter, problem‑solver and doer with a blend of strategy, execution and people management experience.

Key Responsibilities:

• Lead all accounting and corporate financial functions including monthly close, accounts payable, accounts receivable, payroll, budgeting, financial planning and reporting
• Lead cross‑border (US and Canada) accounting between Mantel and its Canadian subsidiary
• Develop policies, procedures and tools to improve the accuracy and efficiency of close and reporting processes (including for government / grant reporting purposes)
• Evaluate existing and create new internal controls, risk management frameworks, and financial policies and procedures
• Participate in the development of corporate finance strategy and communicate strategy to senior leadership
• Support/own the budget and forecasting process
• Support other departments with financial analysis and reporting
• Ensure delivery of monthly, quarterly and annual financial statements
• Coordinate tax prep with external tax accountants
• Oversee annual business audits

The ideal candidate will have most, if not all, of these qualifications:

• 7-10 years of professional experience in corporate financial management, ideally in a variety of financial roles within an organization and with leadership experience. Previous experience in a venture‑backed early‑stage company is strongly preferred.
• Bachelor’s degree in accounting, finance or a related field, or a CPA certification
• Experience or knowledge in cross‑border accounting between the US and Canada
• Expert knowledge of GAAP accounting principles, financial regulations and reporting standards
• Deep experience in deploying financial technology tools and automating financial processes
• Strong analytic skills with a strategic mindset and strong attention to detail
• Ability to execute effectively with limited guidance and in potentially ambiguous situations

Requires US or Canadian Work Authorization

Location:

In Person (Cambridge, MA) or remote

Compensation & Benefits – we provide competitive and holistic compensation to all our full‑time team members, including:

• Highly competitive pay based on experience, including equity
• 90% subsidized medical and dental healthcare coverage (50% for dependents)
• Unlimited vacation policy, mental health personal days, generous sick leave, plus a week‑long winter break at the end of December
• Health/Fitness and cell phone stipend
• Company matched 401k (Canadian equivalent available)
• Generous parental leave
• Access to FSA/HSA and commuter benefits accounts (Canadian alternates available)

This is an exciting opportunity to be an early hire in a new, well‑funded company, with significant opportunity for advancement.

At Mantel, we value and prioritize diversity of thought, access and experiences and are an equal opportunity employer by choice. We consider all qualified applicants equally for employment. We do not discriminate on the basis of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age or any other basis protected by law, ordinance or regulation.

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