About Us

At Onterris, we build careers grounded in purpose, responsibility and real-world impact.

“For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive.

When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact.

Together, we will advance our way of life and protect the integrity of our environment every step of the way.

A Day in the Life

Onterris is seeking a Key Client Leader to lead one or more of our most significant client relationships. This role is for driving long-term account growth, deepening client partnerships, and deploying Onterris full environmental platform to help clients solve complex operational, regulatory, and sustainability challenges. This position requires a proven strategic commercial leader who understands the realities of the chemical sector including regulatory pressure, emissions reduction, operational risk, and capital discipline, and can translate those needs into practical, defensible, and commercially sound environmental solutions.

• Own the enterprise-level relationship for major client(s), serving as the primary executive point of contact and trusted advisor.

• Develop and execute a multi-year strategic account plan, including revenue growth targets, service expansion, and client retention strategies.

• Lead and coordinate a cross-functional Client Solutions Team, ensuring consistent delivery, clear communication, and accountability across service lines.

• Partner with the relevant Market Sector Leader and fellow sector Account Managers to support sector initiatives, while mentoring and providing guidance to staff responsible for leading and managing key accounts across the sector portfolio.

• Align the Onterris monitoring, measurement, permitting, remediation, engineering, and advisory services across geographies to the client’s priorities.

• Identify, qualify, and advance new opportunities by proactively understanding the client’s assets, regulatory environment, and long-term business objectives.

• Ensure disciplined use of CRM tools (e.g., Salesforce), accurate forecasting, and clear reporting to executive leadership.

• Provide account-level oversight and accountability by monitoring overall portfolio health (schedule, budget, quality, and risk), intervening when performance or relationships begin to drift, elevating and resolving client issues at the executive level, and ensuring lessons learned are consistently applied to improve outcomes across the account.

• Partner with marketing and pursuit teams on major opportunities.

• Serve as the internal advocate for the client, translating client needs into actionable direction for technical teams and leadership.  Acts as the voice of the client internally, communicating feedback, priorities, and expectations to influence decisions and ensure service delivery aligns with contractual, operational, and relationship objectives.

• Uses client insight to drive continuous improvement, shaping internal practices and capabilities to better meet evolving client and market needs while reinforcing a client‑centric culture.  Ensures consistent messaging, pricing, and delivery approach across all projects, geographies, and service lines

Your Expertise and Skills

These requirements reflect the knowledge, skills and abilities that help you do your best work here.

• 10+ years in sales, account management, or business development (technical or environmental services preferred)

• Demonstrated success managing and growing large, complex accounts ($5M–$20M+)

• Strong ability to translate technical solutions into commercial value

• Deep experience with CRM systems (Salesforce) and data-driven sales management

• Proven capability in Strategic thinking, Executive communication and influence and Cross-functional leadership

• Analytical mindset with ability to turn data into actionable insight

• Comfortable operating in a fast-paced, high-accountability environment

Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com.

We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more.