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. The Human Resources Generalist provides general support for our employees and oversees the work responsibilities of the HR Administrative Assistant. The position is responsible for managing and overseeing Onterris hiring processes and managing, maintaining, and filing required HR reports and records. The successful HR Generalist will thrive in a fast-paced environment, effectively manage competing priorities, meet deadlines, and maintain accuracy and confidentiality while demonstrating strong attention to detail, professionalism, and communication skills at all organizational levels. This position will be in one of our office locations at either North Little Rock, Kemah, Denver, or Valley Forge and reports to the Human Resources Generalist Supervisor. The compensation range for this role is $60,000 to $70,000, in addition to an annual bonus (5%), commensurate with experience, skills, and geographic location. To thrive in this role, you’ll be comfortable taking ownership of the following responsibilities: NEW HIRE EMPLOYMENT & ONBOARDING PROCESS Oversee and audit HR Administrative Assistant’s hiring process duties Partner with the Human Resources Business Partners and Talent Acquisition teams to ensure smooth employment process Own and conduct the onboarding process for all regular and temporary employees: new hire orientation, I-9 processing, new hire paperwork and system setup, facilities tour, and staff introductions Oversee and audit hiring process for variable staffing HUMAN RESOURCE OPERATIONS, COMPLIANCE & REPORTING Manage offboarding and termination process, including system updates, offboarding and state separation documents Ensure adherence to HR policies, legal requirements, and company standards Develop and enhance SOPs and policies for HR operational processes Process employee status changes including promotions, transfers, FTE conversions, and compensation changes Conduct I-9 verifications and audit completion Conduct employment verifications and providing documentation Prepare and distribute routine operational HR reports and audits Support HR data analysis and reporting efforts to identify trends and opportunities for improvement Support state agency filings and reporting Maintain accurate employee records and personnel files in compliance with applicable federal and state-specific laws and internal policies Maintain legal compliance requirements and oversight of FMLA, USERRA, ADA, FLSA, ERISA programs PERFORMANCE MANAGEMENT & EMPLOYEE ENGAGEMENT Provide support with annual performance review cycle inclusive of employee goal submittal, performance review completion, and compensation plan details Provide support in the implementation of employee engagement programs and initiatives Develop and deliver HR training programs related to company policies, compliance, and management tools Support HR Business Partners with identifying training needs and developmental opportunities for employees and managers PROJECTS & INITIATIVES Support the execution of HR programs and initiatives Participate in HR process improvements and continuous enhancement of HR systems and services 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 human resources, business administration, or a related field Minimum of 3-7 years of experience in Human Resources, preferably experience working with multiple states and countries Strong understanding of HR practices, policies, and laws Professional HR certification such as PHR or SHRM-CP is preferred Previous Workday HRIS platform experience is preferred Prior experience in payroll and benefit administration is preferred Proficiency in Microsoft office suite (Excel, PowerPoint, Word, SharePoint) Proven ability to work independently and collaborate effectively with cross-functional teams within a matrix reporting structure Ability to work effectively under pressure in a fast-paced HR environment while maintaining professionalism, accuracy, and confidentiality Adapt quickly to changing business needs, priorities, and urgent requests Possess excellent problem-solving and analytical skills with careful attention to detail being critical Possess a high degree of personal initiative and responsibility for work assigned Demonstrate excellent verbal and written communication skills in the English language Travel: <10% 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. At Onterris, we take on complex challenges with purpose and momentum, alongside teams that lead with integrity, deliver together, and invest in your growth. "Working with inspiring coworkers and clients across the globe over the past five years has been incredibly rewarding. Their passion motivates me to improve our client experience and work that I deliver." - Erin Peck, Emissions Services “There are not many places where a toxicologist can be boots-on-the-ground at an environmental emergency one day and deep in a human health risk assessment or litigation the next, but this company is one of them, and honestly, that breadth is what makes me love the work. We are a team of scientists with a broad range of talents and experiences who genuinely take the mission to heart, because protecting people and communities from chemical hazards is not abstract here; it is exactly why we show up every day. The culture reflects that shared commitment in the best way: collaborative, rigorous, and truly motivated by the impact we make together.” - Andre Richardson, Consulting “I knew my position here would be more than just a job. Every day is a new, exciting challenge to solve, and I get to go home knowing that the work I am doing is having a positive impact on the world.” - J Esteves, R&D

more at Onterris.

2 Nov, 2026

Onterris

Environmental Field Technician

Engineering

USA-PA-Pittsburgh, United States of America

Salary not listed

more at Onterris.

Environmental Field Technician

Laboratory Technician I - Sample Receiving (Wednesday - Saturday, 10-hour Shift)

Environmental Field Technician

similar roles.

Staffing Specialist (Bilingual)

Production Coordinator

Event Manager - Tech

HR Generalist II

Assistant Manager

Redemption Center Associate

more at Onterris.

Environmental Field Technician

Laboratory Technician I - Sample Receiving (Wednesday - Saturday, 10-hour Shift)

Environmental Field Technician

similar roles.

Staffing Specialist (Bilingual)

Production Coordinator

Event Manager - Tech

HR Generalist II

Assistant Manager

Redemption Center Associate