Administrative & Project Support Specialist

About Us At Onterris, we build careers grounded in purpose, responsibility and real-world impact. 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 As a Business Support Specialist, you will provide essential support to managers and employees at our Houston office, assisting with daily operational needs and contributing to the company’s broader administrative and project‑related activities. This is a dynamic, fast‑paced role that blends technical project support, executive support, and office operations. The ideal candidate brings strong customer service experience, thrives in a collaborative environment, demonstrates exceptional attention to detail, communicates proactively, stays organized, and consistently meets deadlines. The hourly range for this role is $29/hr. to $36/hr. commensurate with experience, skills, and geographic location. To thrive in this role, you’ll be comfortable taking ownership of the following responsibilities: Technical Administrative Support – 50% Prepare and manipulate complex Microsoft Excel spreadsheets and databases as necessary to support the Air Practice leadership Prepare and revise presentations, documents, reports, and correspondence to support Air leadership, including Microsoft Word and PowerPoint Support and manage internal projects and tasks, track deadlines, and follow up on action items Handle sensitive and confidential information with discretion Project Technical support – 25% Provide technical support to project managers as required, including emission calculations and the preparation of regulatory forms and tables, etc. Assist project managers with permit public notice activities such as coordination of newspaper postings and ordering signage Provide support to project managers with cost estimating tools, contract acquisition, Salesforce administration, and other financial-related components required for project execution General Office Operations – 25% Manage visitor logistics and office suite access, greet visitors and maintain a welcoming, professional office environment Serve as the primary liaison between the office and building management Manage office supply/break room snack inventory and place orders as required Coordinate office-wide and group meetings and lunches Assist with planning company events, team activities, and office‑wide communications Manage complex calendars, schedule meetings, and coordinate appointments, executive travel, conference arrangements, itineraries, logistics, and company-wide meetings and conference room bookings Handle incoming and outgoing mail, packages, and deliveries Your Expertise And Skills These qualifications reflect the knowledge, skills, and abilities that will help you succeed in this role. College degree is preferred, or high school diploma with equivalent work experience Strong Proficiency in Microsoft Office, particularly Excel and PowerPoint Strong verbal and written communication skills Excellent customer service and interpersonal abilities Accuracy and attention to detail Proven capacity to manage multiple priorities, maintain organization, and meet deadlines in a fast‑paced setting Professional appearance and demeanor We are an Equal Opportunity Employer. We are committed to providing access and reasonable accommodation in our employment for individuals with disabilities.

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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. #J-18808-Ljbffr Onterris