Location: Vacaville, CA

This is a fully site‑based role. Working together in person supports close, real‑time collaboration and the technical precision needed to manufacture medicines to the highest quality and safety standards.

Sr. Environmental Sustainability Engineer will provide strategic and technical leadership for sustainability initiatives at our site. This role will develop and execute the site sustainability roadmap, identify and implement projects that reduce greenhouse gas emissions, energy use, water consumption, and waste generation, and serve as a trusted advisor to site leadership on sustainability strategy, performance, and long-term decarbonization planning.

This role is a unique opportunity to lead a portfolio of sustainability projects across energy efficiency, water stewardship, circular economy, resource conservation, and low-carbon technologies. The role will partner closely with Engineering, Facilities, Operations, EHS, Corporate Sustainability, and site leadership to translate corporate sustainability commitments into measurable site-level action.

What you will get

The full-time base annual salary for this position is expected to range between $142,500 to $237,500.  In addition, below you will find a comprehensive summary of the benefits package we offer:

• Performance-related bonus

• Medical, dental and vision insurance

• 401(k) matching plan

• Life insurance, as well as short-term and long-term disability insurance

• Employee assistance programs

• Paid Time Off

What you will do

• Responsible for sustainability reporting and metrics, including oversight of the collection, analysis, and communication of sustainability data. Establishes performance metrics and dashboards, supporting internal and external reporting, and ensuring alignment with Global Reporting Initiative (GRI) standards and other relevant frameworks such as as SDGs and SBTi.

• Represent the site in a global ESG (Environmental, Social & Governance) network, helping connect site-level sustainability priorities with broader company initiatives.

• Collaborate with global and functional partners to align ESG strategies, share best practices, identify designated contacts for corporate responsibility, sustainability, compliance, and related ESG initiatives, and support coordinated action on key environmental, social, and governance challenges.

• Ideal candidates will bring strong technical depth, demonstrated leadership of complex sustainability programs, experience influencing cross-functional stakeholders, and a track record of delivering measurable environmental performance improvements.

• Drive decarbonization initiatives by creating greenhouse gas (GHG) reduction strategies and business cases.

• Identify and implement energy optimization projects including utilities efficiency, electrification, renewable energy, and low-carbon technologies.

• Manage the sustainability project portfolio through technical evaluations, prioritization, capital planning, and investment recommendations.

What we are looking for

• Bachelor of Science degree in Chemical Engineering, Environmental Engineering, Mechanical Engineering, Energy Engineering, or Environmental Science with significant engineering experience.

• Strategic sustainability planning, roadmap development, and project portfolio management.

• Experience in corporate ESG reporting and/or sustainability, preferably with a range of experience across different functions and/or businesses.

• Technical understanding of energy systems, utilities, water stewardship, waste reduction, emissions reduction, and decarbonization solutions.

• Ability to quantify environmental impact, business value, and return on investment for sustainability opportunities.

• Strong business acumen and ability to influence senior leaders and cross-functional stakeholders.

• Collaboration and communication skills to align engineering, operations, EHS, finance, facilities, utilities, and employee engagement teams.

• Analytical capability to establish metrics, dashboards, reporting routines, and performance improvement plans.

About Lonza

At Lonza, our people are our greatest strength. With 30+ sites across five continents, our globally connected teams work together every day to manufacture the medicines of tomorrow. Our core values of Collaboration, Accountability, Excellence, Passion and Integrity reflect who we are and how we work together. Everyone’s ideas, big or small, have the potential to improve millions of lives, and that’s the kind of work we want you to be part of.

Innovation thrives when people from all backgrounds bring their unique perspectives to the table. At Lonza, we offer equal employment opportunities to all qualified applicants regardless of race, religion, color, national origin, sex, sexual orientation, gender identity, age, disability, veteran status, or any other characteristic protected by law.

Ready to shape the future of life sciences? Apply now.