Gas & Chemical Commissioning Engineer

Lotus Works is an Engineering Services provider specializing in managing Commissioning, Construction Services, Calibration, Operations & Maintenance scopes of work within global manufacturing facilities. Lotus Works operates globally across EMEA and North America partnering with the world’s leading manufacturers across the Semiconductor, Pharmaceutical & Biologics, Medical Device and Data Centre sectors. Our team of Engineering and Technical professionals is immersed in cutting-edge technologies and innovations.

Lotus Works is committed to a diverse and inclusive workplace, integral to our people-first approach.

The Gas & Chemical Commissioning Engineer plays a critical role in ensuring safe, reliable, and compliant startup of gas and chemical systems within a semiconductor manufacturing environment. This position is responsible for planning, executing, and documenting mechanical commissioning activities across all ASHRAE commissioning phases. The ideal candidate thrives in a fast-paced, technically complex environment and has strong experience commissioning high-purity gas and chemical distribution systems.

• Develop and implement mechanical commissioning plans aligned with ASHRAE guidelines.
• Review design documents, specifications, and IFC drawings while serving as Task Leader (TL).
• Create system verification checklists and detailed functional test procedures.
• Review, update, and enhance mechanical Sequences of Operation (SOO).
• Coordinate with Test and Balance (TAB) contractors to establish complete testing protocols.

Technical Execution (Commissioning Phases 2–6)

Phase 2 – Factory Witness Testing (ASHRAE Level
1)

• Lead factory acceptance tests (FAT) for mechanical, gas, and chemical equipment.
• Document test results and verify compliance with project specifications.
• Conduct visual inspections of gas and chemical installations, structural supports, and field routing.
• Verify compliance with mechanical codes and oversee pressure/hydrostatic and duct leakage testing.
• Confirm equipment access, service clearances, and installation of sensors and control systems.

Phases 4–5 – Operational & Functional Testing (ASHRAE Levels 3–4)

• Coordinate and oversee airflow and hydronic TAB activities.
• Test and verify chemical system controls, including chemical boxes, manifolds, and distribution systems.
• Perform Functional Acceptance Testing (FAT) in alignment with approved SOOs.
• Validate installation of gas systems including piping, tanks, controls, supports/hangers, labeling, and reporting documentation.
• Test and verify Life Safety Systems and ensure proper interaction with gas and chemical equipment.
• Any other duties or responsibilities that may be assigned to you in your role.

• 3+ years of experience commissioning gas and chemical equipment in semiconductor or other mission-critical facilities.
• Strong understanding of ASHRAE commissioning principles (Levels 1–4).
• Hands-on experience with high-purity gas systems, chemical distribution systems, and related controls.
• Ability to interpret engineering drawings, P&IDs, specifications, and SOOs.
• Working knowledge of TAB activities, pressure testing, and Life Safety Systems.

• Bachelor’s degree in Chemical or Mechanical Engineering (highly desirable, not required).
• Proof of education, licenses, and certifications will be required where applicable
• Medical, Dental and Vision Insurance
• Life, Short-Term, Long-Term Disability Insurance
• Training and Education Assistance
  401k Retirement Plan
• Extra Annual Leave with Years of Service
• Maternity/Paternity Leave
• Recognition Rewards

The pay range shown reflects the minimum and maximum hourly rates the company may offer for this position. The final rate will depend on factors such as skills, experience, and qualifications.

Hourly Rate

$50 — $55 USD

Eligibility for per diem is determined by company policy and is applicable only under specific circumstances, based on job location and travel requirements.

$1,400 — $1,400 USD

Lotus Works is an equal opportunity employer and prohibits discrimination and harassment of any kind. We are committed to creating a diverse and inclusive workplace where all employees feel valued, respected, and empowered.