Proterra Leadership

Meet Heather Johnas

Heather Johnas is a senior operations and manufacturing leader who drives operational excellence, supply chain efficiency, and continuous improvement across complex, multi-site organizations. At Proterra, she leads end-to-end manufacturing strategy with a focus on quality, safety, and scalable growth in the electric vehicle industry.

Heather has led materials management, overseeing $140 million in inventory across four manufacturing sites, and operational excellence work, partnering with cross-functional teams to build automotive-grade operational systems. She is known for building high-performing teams and developing internal talent.

Before Proterra, Heather spent time in operations leadership at Gexpro Services, overseeing multi-site P&L, ERP implementations, and Lean/5S initiatives across a national footprint. Her career began in finance, giving her an analytical edge she brings to every operations challenge.

Heather holds a Bachelor of Science in Finance from Siena University and is a certified CrossFit trainer, bringing the same discipline and drive to her personal pursuits that she brings to her work.

Dan George leads Purchasing and Supplier Quality at Proterra, bringing rigor and discipline to cost optimization, supply chain resilience, and strategic supplier partnerships. He directs Proterra's global sourcing initiatives and supplier quality strategy in support of the company's mission.

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Marissa Keisler leads Marketing, Communications and Business Development at Proterra, driving brand strategy, partner engagement, and market expansion in the EV space. Her cross-functional leadership spans product marketing, competitive intelligence, and executive communications in high-growth technology markets.

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Yogesh Pawar leads Proterra's full engineering ecosystem spanning design, manufacturing, quality, program management, controls, and operational technology. His versatility shows in the range of what he has led: IT and program management, a transformation of customer and field service operations, and new product development that consistently brings structure and momentum to complex, cross-functional teams.

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Mabel Feng leads Product and Policy at Proterra, covering product, policy, and government affairs with a focus on driving product and market innovation across a battery portfolio that powers commercial and industrial segments. She is also an active member of the professional community, serving as a speaker, mentor, and board advisor.

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Anton Wintzell leads Finance and Corporate Strategy at Proterra, with responsibility for financial management, reporting, planning, and corporate strategy. In this role, he works to keep Proterra's financial strategy, planning, and reporting aligned with the company's long-term growth.

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PJ Goodwin leads Information Technology at Proterra, with responsibility for IT infrastructure, operations, cybersecurity, and technology strategy. He directs the technology organization supporting Proterra's operating divisions and U.S. sites, setting IT strategy, managing budget and vendor relationships, and owning the policies and controls that keep the environment secure and audit-ready.

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Heather Johnas is a senior operations and manufacturing leader who drives operational excellence, supply chain efficiency, and continuous improvement across complex, multi-site organizations. At Proterra, she leads end-to-end manufacturing strategy with a focus on quality, safety, and scalable growth in the electric vehicle industry.

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Jen Miller leads Legal and Corporate Secretary responsibilities at Proterra, covering commercial contracts, supply chain and procurement, intellectual property, product safety and regulatory compliance, corporate governance, and employment matters. She has played a central role in building Proterra's legal infrastructure as a standalone commercial within the Volvo group.

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Heidi DuJardin leads Human Resources at Proterra, bringing 3 decades of HR leadership across aerospace, manufacturing, financial services, and consumer packaged goods, with deep expertise in total rewards, talent development, employment law, and HR operations, and partners directly with executive leadership to build the people infrastructure behind Proterra's mission and growth.

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Chris Bailey leads Proterra as Chief Executive Officer, drawing on vast experience in industrial product and electronics manufacturing to guide the company's technology and market strategy. He previously served as Proterra's Chief Business Officer, directing every commercial function, including business development, sales and marketing, customer program management, and customer success and service.

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Greg Iwahashi leads Business Development and Customer Success at Proterra, managing the end-to-end customer experience from business development and customer engineering through the prototype phase, and on through partnerships, service, and aftermarket support as customers move into production. He has guided more than 40 different vehicle and equipment programs through this process.

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