Senior Process Engineer

AD Energy Recruitment; Bakersfield (CA); Sur place; USD 120 000 - 180 000; Plein temps

Résumé du poste

AD Energy Recruitment is seeking a Senior Process Engineer for RNG projects in Bakersfield, CA. You will lead process design and deliverables, mentor junior engineers and ensure safety, regulatory and commercial compliance across the project lifecycle.

The role requires 8–12 years in RNG/biogas or related fields, strong expertise in PFDs, P&IDs and heat/mass balances, and PE licensure. On-site work in Bakersfield, with cross-functional collaboration across teams.

Qualifications

• Degree in Chemical or Mechanical Engineering or related field.
• 8–12 years of process engineering in RNG/biogas or gas processing.
• Strong experience with PFDs, P&IDs, BFDs and heat/mass balances.

Responsabilités

• Lead design and review of process deliverables (PFDs, P&IDs, equipment specs, calculations).
• Provide technical expertise across anaerobic digestion, biogas upgrading, gas conditioning, compression and interconnections.

Connaissances

Process engineering

PFDs & P&IDs

Heat & material balances

Leadership

Gas processing knowledge

PE licence

Mentoring

Formation

Bachelor's degree in Chemical or Mechanical Engineering

Outils

Aspen HYSYS

Aspen Plus

PRO II

Description du poste

Senior Process Engineer – Renewable Natural Gas (RNG)

Location: Bakersfield, California

Employment Type: Full-Time

The Opportunity

AD Energy is working with an established and growing Renewable Natural Gas (RNG) developer to recruit an experienced Senior Process Engineer in Bakersfield, California.

This is an opportunity to take a leading technical role in the design, development and delivery of RNG and biogas projects, working across the full project lifecycle from concept and detailed engineering through to commissioning and operational optimisation.

We're looking for someone with a strong process engineering background who enjoys solving complex technical challenges, driving engineering standards and supporting the development of junior engineers.

Key Responsibilities

• Lead the design, development and review of process engineering deliverables, including PFDs, P&IDs, equipment specifications and technical calculations.
• Provide technical expertise across anaerobic digestion, biogas upgrading, gas conditioning, compression and pipeline interconnections.
• Develop and review process simulations, heat and material balances and equipment sizing calculations.
• Provide engineering leadership throughout project design, construction, commissioning and start-up.
• Lead technical design reviews, HAZOPs, safety assessments and constructability reviews.
• Work closely with project teams, contractors, vendors and operations personnel to ensure successful project delivery.
• Support troubleshooting, process optimisation and continuous improvement across operating RNG facilities.
• Mentor junior engineers and provide technical guidance across multidisciplinary teams.
• Ensure designs meet safety, regulatory, operational and commercial requirements.

What We're Looking For

• Degree in Chemical Engineering, Mechanical Engineering or a related discipline.
• 8–12 years of process engineering experience within RNG, biogas, gas processing or a similar industrial environment.
• Strong experience developing and reviewing PFDs, P&IDs, BFDs and heat and material balances.
• Proficiency with process simulation software such as Aspen HYSYS, Aspen Plus, PRO II or similar.
• Knowledge of gas processing equipment, process systems and relevant engineering standards.
• Experience supporting projects from initial design through construction and commissioning.
• Strong technical leadership, communication and problem-solving skills.
• Professional Engineer (PE) licence.
• Experience with anaerobic digestion systems, membrane separation, PSA, H₂S removal and gas compression.
• Previous experience mentoring engineers or leading technical engineering activities.