| Temporary | Engineering Internship - Ambient Air Monitoring Team | 02/17/2026 | Williamsport | Pennsylvania |
| Full time | Engineering Internship - Advanced Monitoring Team | 02/17/2026 | Pittsburgh | Pennsylvania |
| Full time | Environmental Engineer - Industrial Monitoring Services | 02/17/2026 | Palatine | Illinois |
| Full time | Environmental Engineer - Industrial Monitoring Services | 02/17/2026 | PIttsburgh | Pennsylvania |
| Full time | Performance and Efficiency Engineer - Mechanical, Electrical, Chemical, and Thermal | 02/13/2026 | Powell | Tennessee |
| Full time | Administrative Assistant | 12/30/2025 | Pittsburgh | Pennsylvania |
| Full time | FIELD SCIENTIST / AIR EMISSIONS STACK TEST FIELD TEAM LEADER | 08/14/2025 | Pittsburgh | Pennsylvania |
| Full time | FIELD SCIENTIST | 07/25/2025 | Palatine | Illinois |
| Full time | CNC Machinist | 01/24/2025 | Palatine | Illinois |
| Full time | Interested in working at CleanAir? | 06/15/2022 | Palatine | Illinois |
| Full time | Engineering Intern/Co-op | 03/02/2022 | Powell | Tennessee |