Applications Engineer

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

We're looking for an Applications Engineer who will be responsible for developing water treatment solutions that align with the customer's needs and the defined sales strategy to create a winning technical proposal. The successful candidate will have proven capabilities managing and leading projects by owning the technical sizing and proposal development. The candidate should also have strong time management skills to complete multiple tasks within the customer's deadline. An Applications Engineer should be technically proficient and be able to efficiently navigate customer communications and understand how the commercial strategy drives the technical solution.

We're looking for candidates based in: Portland, ME , Fuquay-Varina, NC , and Oconomowoc, WI .

The compensation range for this role is $85,000-$120,000, in addition to an annual bonus, commensurate with experience, skills, and geographic location.

This role will be responsible for a full range of activities including:

• Be an integral part of our safety culture, approaching all aspects of work with a safety-first attitude.
• Learn and understand the highly technical product that Onterris is delivering to our customers and demonstrate customer-focus with creative problem-solving skills
• Work collaboratively with the Business Development team to evaluate the customer request and align the technical basis of design with the commercial strategy.
• Utilize process engineering principals and Onterris tools to design the treatment solution that meets or exceeds the customers effluent targets.
• Select equipment and controls necessary for the selected treatment process to allow it to function as intended.
• Consult with key functional teams and subject matter experts to confirm the process design and build the required content for customer proposals.
• Develop capital and operating cost estimates for proposals using internal tools and interacting with 3rd party suppliers.
• Provide process engineering support and lead the technical handover to the project delivery team.
• Create proposal level technical drawings - Block Flow Diagrams (BFDs), Process Flow Diagrams (PFDs), and layouts.
• Perform literature and web-based technical research.
• Assist with writing technical reports including, but not limited to, the following: technical proposals, project summaries and pilot test summaries.
• Travels as needed, primarily domestically, to support either the business development or project team in customer discussions or the delivery of products.
• Perform other duties as assigned

Your Expertise and Skills

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

• Bachelor's degree in Chemical, Mechanical, Environmental, Process engineering or related field
• 5+ years of related work experience
• FE/EIT desired but not required
• Must be proficient in MS Office products
• Effective verbal and written communication skills
• Self-starter and effective time management/prioritization skills
• Ability to work effectively both in a team and independently
• Must possess a valid driver's license
• Must have a reliable form of transportation to travel to job sites and the office

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

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.