Chief of staff to the CEO - Finance Focus - Gif-sur-Yvette

SPARK Cleantech

CDI
Localisation Gif-sur-Yvette, France
Energie
Télétravail ponctuel autorisé
40000 - 60000€ brut (Annuel)
De 1 à 5 année(s) d'exp.
Publiée le 06/04/2026

Description de la mission

  • Who We Are

Spark Cleantech is a climate tech startup building a breakthrough process that converts methane (CH4) into clean hydrogen (H2) and solid carbon (C), with no CO₂ emissions. By creating value from both products, we enable heavy industries to decarbonize without sacrificing competitiveness.

Following the successful deployment of an industrial pilot on a client site in 2024 and a major funding round in 2025, we are now building our first industrial standard.

To support this growth, we aim to hire around 20 talented individuals to join our team who share our vision, contributing to a more sustainable world, and our values: positivity, passion, and high standards. We are looking to bring together top experts in their fields to industrialize a technology that comes with exciting challenges.

Our team is passionate, positive, and committed to building a cleaner future. If you’re looking to join a high-impact, ambitious, and innovative project, we’d love to hear from you!

  • Your Role

As the Chief of staff to the CEO, with a strong focus on finance, you will play a central role in ensuring the financial process, operational efficiency, and administrative excellence of our organization. You will work closely with the executive team in ensuring the reliability of financial processes, the quality of reporting to the Board, and the coordination of key cross-functional initiatives.

This role requires strong financial expertise combined with analytical, interpersonal, and organizational skills, with a focus on delivering results and supporting our company’s strategic goals in a fast-growing, evolving environment, close to decision-making.

Your main responsibilities will include:

1. Finance & Accounting

  • Manage day-to-day accounting operations in coordination with our external accountant.
  • Prepare and manage all financial elements from budget, forecast to statements and monthly reporting for the board of directors.
  • Implement and maintain financial controls, processes and procedures.
  • Participate in ensuring compliance with French accounting standards, tax regulations and corporate governance and regulatory requirements.

2. Strategic & Corporate Projects

  • Coordinate financing activities (loans, grants, fundraising-related documentation etc.).
  • Support the CEO and leadership team in strategic decision-making through financial analysis, and preparation of key materials
  • Coordinate and prepare executive and Board meetings (agenda, documentation, follow-up).
  • Lead or contribute to transversal projects linked to company structuring and growth.

3. Human Resources & Office Management

  • Manage the administrative aspects of HR: contracts, payroll management (with our external accountant), training administration, employee records, etc.
  • Implement and maintain HR policies and procedures.
  • Oversee office management and ensure smooth day-to-day operations.
  • Coordinate external service providers (e.g., IT, legal, insurance).

Profil recherché

  • Master's degree in Finance, Accounting, Business Administration, or a related field. DECF is a strong plus.
  • 5 years of experience in a similar role (chief of staff, finance Manager or equivalent), with a strong financial focus, ideally in a startup or SME in a scaling phase.
  • Solid knowledge of French accounting standards, tax regulations.
  • Proficiency in accounting software, experience with Pennylane is a plus.
  • Full professional bilingual proficiency in French and English, both written and spoken.
  • Strong organizational, analytical, and problem-solving skills.
  • Ability to manage multiple priorities in a fast-changing environment.
  • Hands-on, proactive and results-oriented
  • Strong interpersonal skills and ability to work closely with top management.
  • High level of autonomy and reliability.
  • You deeply want to contribute to the decarbonation of our industry

SPARK Cleantech

Développer une technologie innovante afin de produire de l'hydrogène décarboné pour la transition énergétique

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